Update ChangeLog and configure.ac for 1.95

Fixes #2496.

.clang-tidy

@@ -1,33 +1,84 @@
+WarningsAsErrors: '*'
 Checks: '
-    -*,
-    bugprone-*,
+    *,
+    -abseil-*,
+    -altera-*,
+    -android-*,
+    -boost-*,
+    -bugprone-assignment-in-if-condition,
     -bugprone-branch-clone,
+    -bugprone-easily-swappable-parameters,
+    -bugprone-implicit-widening-of-multiplication-result,
     -bugprone-macro-parentheses,
-    google-*,
+    -bugprone-narrowing-conversions,
+    -bugprone-unhandled-self-assignment,
+    -cert-dcl50-cpp,
+    -cert-env33-c,
+    -cert-err33-c,
+    -cert-err58-cpp,
+    -clang-analyzer-*,
+    -concurrency-mt-unsafe,
+    -cppcoreguidelines-avoid-c-arrays,
+    -cppcoreguidelines-avoid-do-while,
+    -cppcoreguidelines-avoid-magic-numbers,
+    -cppcoreguidelines-avoid-non-const-global-variables,
+    -cppcoreguidelines-init-variables,
+    -cppcoreguidelines-macro-usage,
+    -cppcoreguidelines-no-malloc,
+    -cppcoreguidelines-owning-memory,
+    -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
+    -cppcoreguidelines-pro-bounds-constant-array-index,
+    -cppcoreguidelines-pro-bounds-pointer-arithmetic,
+    -cppcoreguidelines-pro-type-member-init,
+    -cppcoreguidelines-pro-type-reinterpret-cast,
+    -cppcoreguidelines-pro-type-union-access,
+    -cppcoreguidelines-pro-type-vararg,
+    -cppcoreguidelines-special-member-functions,
+    -fuchsia-*,
     -google-build-using-namespace,
     -google-readability-casting,
     -google-readability-function-size,
     -google-readability-todo,
     -google-runtime-int,
     -google-runtime-references,
-    misc-*,
+    -hicpp-*,
+    -llvm-*,
+    -llvmlibc-*,
+    -misc-const-correctness,
+    -misc-include-cleaner,
+    -misc-no-recursion,
+    -misc-non-private-member-variables-in-classes,
     -misc-redundant-expression,
     -misc-unused-parameters,
-    modernize-*,
+    -misc-use-anonymous-namespace,
+    -misc-use-internal-linkage,
     -modernize-avoid-c-arrays,
-    -modernize-deprecated-headers,
     -modernize-loop-convert,
-    -modernize-use-auto,
-    -modernize-use-nullptr,
+    -modernize-make-unique,
+    -modernize-use-nodiscard,
+    -modernize-raw-string-literal,
+    -modernize-return-braced-init-list,
+    -modernize-use-default-member-init,
     -modernize-use-trailing-return-type,
     -modernize-use-using,
-    performance-*,
-    portability-*,
-    readability-*,
+    -performance-avoid-endl,
+    -performance-no-int-to-ptr,
+    -readability-avoid-nested-conditional-operator,
+    -readability-braces-around-statements,
     -readability-else-after-return,
+    -readability-function-cognitive-complexity,
     -readability-function-size,
-    -readability-implicit-bool-conversion,
+    -readability-identifier-length,
+    -readability-inconsistent-declaration-parameter-name,
     -readability-isolate-declaration,
     -readability-magic-numbers,
+    -readability-math-missing-parentheses,
     -readability-named-parameter,
-    -readability-simplify-boolean-expr'
+    -readability-redundant-access-specifiers,
+    -readability-redundant-declaration,
+    -readability-simplify-boolean-expr,
+    -readability-suspicious-call-argument'
+CheckOptions:
+    cppcoreguidelines-narrowing-conversions.WarnOnEquivalentBitWidth: 'false'
+    readability-implicit-bool-conversion.AllowIntegerConditions: 'true'
+    readability-implicit-bool-conversion.AllowPointerConditions: 'true'

.github/ISSUE_TEMPLATE.md

@@ -1,28 +1,40 @@
+<!-- --------------------------------------------------------------------------
+ The following information is very important in order to help us to help you.
+ Omission of the following details may delay your support request or receive no
+ attention at all.
+ Keep in mind that the commands we provide to retrieve information are oriented
+ to GNU/Linux Distributions, so you could need to use others if you use s3fs on
+ macOS or BSD.
+--------------------------------------------------------------------------- -->
+
 ### Additional Information
-_The following information is very important in order to help us to help you. Omission of the following details may delay your support request or receive no attention at all._
-_Keep in mind that the commands we provide to retrieve information are oriented to GNU/Linux Distributions, so you could need to use others if you use s3fs on macOS or BSD_
 
-#### Version of s3fs being used (s3fs --version)
-_example: 1.00_
+#### Version of s3fs being used (`s3fs --version`)
+<!-- example: V1.91 (commit:b19262a) -->
 
-#### Version of fuse being used (pkg-config --modversion fuse, rpm -qi fuse, dpkg -s fuse)
-_example: 2.9.4_
+#### Version of fuse being used (`pkg-config --modversion fuse`, `rpm -qi fuse` or `dpkg -s fuse`)
+<!-- example: 2.9.2 -->
 
-#### Kernel information (uname -r)
-_command result: uname -r_
+#### Kernel information (`uname -r`)
+<!-- example: 5.10.96-90.460.amzn2.x86_64 -->
 
-#### GNU/Linux Distribution, if applicable (cat /etc/os-release)
-_command result: cat /etc/os-release_
+#### GNU/Linux Distribution, if applicable (`cat /etc/os-release`)
+<!-- command result -->
 
-#### s3fs command line used, if applicable
+#### How to run s3fs, if applicable
+<!-- Describe the s3fs "command line" or "/etc/fstab" entry used. -->
+[] command line  
+[] /etc/fstab  
+
+<!-- Executed command line or /etc/fastab entry -->
 ```
 ```
-#### /etc/fstab entry, if applicable
-```
-```
-#### s3fs syslog messages (grep s3fs /var/log/syslog, journalctl | grep s3fs, or s3fs outputs)
-_if you execute s3fs with dbglevel, curldbg option, you can get detail debug messages_
+
+#### s3fs syslog messages (`grep s3fs /var/log/syslog`, `journalctl | grep s3fs`, or `s3fs outputs`)
+<!-- if you execute s3fs with dbglevel, curldbg option, you can get detail debug messages. -->
 ```
 ```
+
 ### Details about issue
+<!-- Please describe the content of the issue in detail. -->
 

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,11 @@
+<!-- --------------------------------------------------------------------------
+ Please describe the purpose of the pull request(such as resolving the issue)
+ and what the fix/update is.
+--------------------------------------------------------------------------- -->
+
 ### Relevant Issue (if applicable)
-_If there are Issues related to this PullRequest, please list it._
+<!-- If there are Issues related to this PullRequest, please list it. -->
 
 ### Details
-_Please describe the details of PullRequest._
+<!-- Please describe the details of PullRequest. -->
+

.github/workflows/ci.yml

@@ -0,0 +1,326 @@
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+name: s3fs-fuse CI
+
+on:
+  push:
+  pull_request:
+  #
+  # CRON event is fired on every sunday (UTC).
+  #
+  schedule:
+    - cron: '0 0 * * 0'
+
+#
+# Jobs
+#
+jobs:
+  Linux:
+    runs-on: ubuntu-latest
+    #
+    # build matrix for containers
+    #
+    strategy:
+      #
+      # do not stop jobs automatically if any of the jobs fail
+      #
+      fail-fast: false
+
+      #
+      # matrix for containers
+      #
+      matrix:
+        container:
+          - ubuntu:24.04
+          - ubuntu:22.04
+          - ubuntu:20.04
+          - debian:bookworm
+          - debian:bullseye
+          - rockylinux:9
+          - rockylinux:8
+          - fedora:40
+          - fedora:39
+          - opensuse/leap:15
+          - alpine:3.20
+          - centos:centos7
+
+    container:
+      image: ${{ matrix.container }}
+      options: "--privileged --cap-add SYS_ADMIN --device /dev/fuse"
+
+    env:
+      # [NOTE]
+      # Installation special environment variables for debian and ubuntu.
+      #
+      DEBIAN_FRONTEND:  noninteractive
+      # [NOTE]
+      # actions/checkout uses node20, but can only run up to node16 on centos7.
+      # (glibc 2.27 or later is required to use node20)
+      # This is a temporary solution and will be removed when centos7 support is discontinued.
+      #
+      ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: ${{ matrix.container == 'centos:centos7' && true || false }}
+
+    steps:
+      # [NOTE]
+      # On openSUSE, tar and gzip must be installed before action/checkout.
+      #
+      - name: Install packages before checkout
+        if: matrix.container == 'opensuse/leap:15'
+        run: |
+          zypper install -y tar gzip
+
+      # [NOTE]
+      # Use actions/checkout@v4 except for centos7.
+      # On centos7, we need to run actions/checkout@v3 and configure it to use node16.
+      #
+      - name: Checkout source code(other than centos7)
+        if: matrix.container != 'centos:centos7'
+        uses: actions/checkout@v4
+
+      - name: Checkout source code(only centos7)
+        if: matrix.container == 'centos:centos7'
+        uses: actions/checkout@v3
+
+      # [NOTE]
+      # Matters that depend on OS:VERSION are determined and executed in the following script.
+      # Please note that the option to configure (CONFIGURE_OPTIONS) is set in the environment variable.
+      #
+      - name: Install packages
+        run: |
+          .github/workflows/linux-ci-helper.sh ${{ matrix.container }}
+
+      - name: Build
+        run: |
+          ./autogen.sh
+          /bin/sh -c "./configure ${CONFIGURE_OPTIONS}"
+          make --jobs=$(nproc)
+
+      - name: Cppcheck
+        run: |
+          # specify the version range to run cppcheck (cppcheck version number is x.y or x.y.z)
+          if cppcheck --version | sed -e 's/\./ /g' | awk '{if (($2 * 1000 + $3) <= 2004) { exit(1) } }'; then
+            make cppcheck
+          fi
+
+      - name: Shellcheck
+        run: |
+          if shellcheck --version | awk -F '[ .]' '/version:/ && ($2 * 1000 + $3 <= 7) { exit(1) }'; then
+            make shellcheck
+          fi
+
+      - name: Test suite
+        run: |
+          make check -C src
+          make ALL_TESTS=1 check -C test || (test/filter-suite-log.sh test/test-suite.log; exit 1)
+
+  # [NOTE]
+  # Using macos-fuse-t
+  #   This product(package) is a workaround for osxfuse which required an OS reboot(macos 11 and later).
+  #   see. https://github.com/macos-fuse-t/fuse-t
+  # About osxfuse
+  #   This job doesn't work with GitHub Actions using macOS 11+ because "load_osxfuse" returns
+  #   "exit code = 1".(requires OS reboot)
+  #
+  macos12:
+    runs-on: macos-12
+
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Brew tap
+        run: |
+          TAPS="$(brew --repository)/Library/Taps";
+          if [ -e "$TAPS/caskroom/homebrew-cask" ]; then rm -rf "$TAPS/caskroom/homebrew-cask"; fi;
+          HOMEBREW_NO_AUTO_UPDATE=1 brew tap homebrew/homebrew-cask
+          HOMEBREW_NO_AUTO_UPDATE=1 brew tap macos-fuse-t/homebrew-cask
+
+      - name: Install fuse-t
+        run: |
+          HOMEBREW_NO_AUTO_UPDATE=1 brew install fuse-t
+
+      - name: Install brew other packages
+        run: |
+          S3FS_BREW_PACKAGES='automake cppcheck python3 coreutils gnu-sed shellcheck jq';
+          for s3fs_brew_pkg in ${S3FS_BREW_PACKAGES}; do
+            if brew list | grep -q ${s3fs_brew_pkg}; then if brew outdated | grep -q ${s3fs_brew_pkg}; then HOMEBREW_NO_AUTO_UPDATE=1 brew upgrade ${s3fs_brew_pkg}; fi; else HOMEBREW_NO_AUTO_UPDATE=1 brew install ${s3fs_brew_pkg}; fi
+          done
+
+      - name: Install awscli2
+        run: |
+          cd /tmp
+          curl "https://awscli.amazonaws.com/AWSCLIV2.pkg" -o "AWSCLIV2.pkg"
+          sudo installer -pkg AWSCLIV2.pkg -target /
+
+      - name: Build
+        run: |
+          ./autogen.sh
+          PKG_CONFIG_PATH=/usr/local/opt/curl/lib/pkgconfig:/usr/local/opt/openssl/lib/pkgconfig ./configure CXXFLAGS='-std=c++11 -DS3FS_PTHREAD_ERRORCHECK=1'
+          make --jobs=$(sysctl -n hw.ncpu)
+
+      - name: Cppcheck
+        run: |
+          # specify the version range to run cppcheck (cppcheck version number is x.y or x.y.z)
+          if cppcheck --version | sed -e 's/\./ /g' | awk '{if (($2 * 1000 + $3) <= 2004) { exit(1) } }'; then
+            make cppcheck
+          fi
+
+      - name: Shellcheck
+        run: |
+          if shellcheck --version | awk -F '[ .]' '/version:/ && ($2 * 1000 + $3 <= 7) { exit(1) }'; then
+            make shellcheck
+          fi
+
+      - name: Test suite
+        run: |
+          make check -C src
+          make ALL_TESTS=1 check -C test || (test/filter-suite-log.sh test/test-suite.log; exit 1)
+
+  MemoryTest:
+    runs-on: ubuntu-latest
+
+    #
+    # build matrix for containers
+    #
+    strategy:
+      #
+      # do not stop jobs automatically if any of the jobs fail
+      #
+      fail-fast: false
+
+      #
+      # matrix for type of checking
+      #
+      # [NOTE]
+      # Currently following test is not supported:
+      #    - sanitize_memory   : Future support planned
+      #
+      matrix:
+        checktype:
+          - glibc_debug
+          - sanitize_address
+          - sanitize_others
+          - sanitize_thread
+          - thread_safety
+          - valgrind
+
+    container:
+      image: fedora:40
+
+      options: "--privileged --cap-add SYS_ADMIN --device /dev/fuse"
+
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Install packages
+        run: |
+          .github/workflows/linux-ci-helper.sh fedora:40
+
+      - name: Install clang
+        run: |
+          dnf install -y clang
+          if [ "${{ matrix.checktype }}" = "valgrind" ]; then
+              dnf install -y valgrind
+          fi
+
+      #
+      # Set CXX/CXXFLAGS and Variables for test
+      #
+      - name: Set variables
+        run: |
+          COMMON_CXXFLAGS='-g -Wno-cpp -DS3FS_PTHREAD_ERRORCHECK=1'
+          {
+            if [ "${{ matrix.checktype }}" = "glibc_debug" ]; then
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O0 -D_GLIBCXX_DEBUG"
+            elif [ "${{ matrix.checktype }}" = "sanitize_address" ]; then
+                echo 'CXX=clang++'
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O0 -fsanitize=address -fsanitize-address-use-after-scope"
+                echo 'ASAN_OPTIONS=detect_leaks=1,detect_stack_use_after_return=1'
+            elif [ "${{ matrix.checktype }}" = "sanitize_memory" ]; then
+                echo 'CXX=clang++'
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O0 -fsanitize=memory"
+            elif [ "${{ matrix.checktype }}" = "sanitize_thread" ]; then
+                echo 'CXX=clang++'
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O0 -fsanitize=thread"
+                echo 'TSAN_OPTIONS=halt_on_error=1,suppressions=threadsanitizer_suppressions.txt'
+                # [NOTE]
+                # Set this to avoid following error when running configure.
+                # "FATAL: ThreadSanitizer: unexpected memory mapping"
+                sysctl vm.mmap_rnd_bits=28
+            elif [ "${{ matrix.checktype }}" = "sanitize_others" ]; then
+                echo 'CXX=clang++'
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O1 -fsanitize=undefined,implicit-conversion,local-bounds,unsigned-integer-overflow"
+            elif [ "${{ matrix.checktype }}" = "thread_safety" ]; then
+                echo 'CXX=clang++'
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O1 -Wthread-safety -stdlib=libc++ -D_LIBCPP_ENABLE_THREAD_SAFETY_ANNOTATIONS -Werror"
+                echo 'LDFLAGS=-DCLANG_DEFAULT_LINKER=lld'
+            elif [ "${{ matrix.checktype }}" = "valgrind" ]; then
+                echo "CXXFLAGS=${COMMON_CXXFLAGS} -O1"
+                echo 'VALGRIND="--leak-check=full --error-exitcode=1"'
+                echo 'RETRIES=100'
+                echo 'S3_URL=http://127.0.0.1:8081'
+            fi
+          } >> "$GITHUB_ENV"
+
+      - name: Build
+        run: |
+          ./autogen.sh
+          /bin/sh -c "CXX=${CXX} CXXFLAGS=\"${CXXFLAGS}\" LDFLAGS=\"${LDFLAGS}\" TSAN_OPTIONS=\"\" ./configure --prefix=/usr --with-openssl"
+          make
+
+      - name: Test suite
+        run: |
+          /bin/sh -c "ALL_TESTS=1 ASAN_OPTIONS=${ASAN_OPTIONS} TSAN_OPTIONS=${TSAN_OPTIONS} VALGRIND=${VALGRIND} RETRIES=${RETRIES} make check -C test || (test/filter-suite-log.sh test/test-suite.log; exit 1)"
+
+  clang-tidy:
+    runs-on: ubuntu-latest
+    container:
+      image: fedora:40
+
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v4
+
+      - name: Install packages
+        run: |
+          .github/workflows/linux-ci-helper.sh fedora:40
+
+      - name: Build
+        run: |
+          ./autogen.sh
+          /bin/sh -c "./configure ${CONFIGURE_OPTIONS}"
+          make --jobs=$(nproc)
+
+      - name: clang-tidy
+        run: |
+          make -C src/ clang-tidy
+          make -C test/ clang-tidy
+
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

.github/workflows/linux-ci-helper.sh

@@ -0,0 +1,361 @@
+#!/bin/sh
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+# [NOTE]
+# Since bash is not present in some Runner containers, this script
+# runs in sh.
+# pipefail etc. are not native variables of sh. It exists in bash's
+# sh compatibility mode, but doesn't work in sh compatibility mode
+# of ash such as alpine.
+# However, it's not fatal that pipefail doesn't work for this script.
+#
+set -o errexit
+set -o nounset
+#set -o pipefail
+
+#-----------------------------------------------------------
+# Common variables
+#-----------------------------------------------------------
+PRGNAME=$(basename "$0")
+
+echo "${PRGNAME} [INFO] Start Linux helper for installing packages."
+
+#-----------------------------------------------------------
+# Parameter check
+#-----------------------------------------------------------
+#
+# Usage: ${PRGNAME} "OS:VERSION"
+#
+if [ $# -ne 1 ]; then
+    echo "${PRGNAME} [ERROR] No container name options specified."
+fi
+
+#-----------------------------------------------------------
+# Container OS variables
+#-----------------------------------------------------------
+CONTAINER_FULLNAME=$1
+# shellcheck disable=SC2034
+CONTAINER_OSNAME=$(echo "${CONTAINER_FULLNAME}" | sed 's/:/ /g' | awk '{print $1}')
+# shellcheck disable=SC2034
+CONTAINER_OSVERSION=$(echo "${CONTAINER_FULLNAME}" | sed 's/:/ /g' | awk '{print $2}')
+
+#-----------------------------------------------------------
+# Common variables for awscli2
+#-----------------------------------------------------------
+AWSCLI_URI="https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip"
+AWSCLI_ZIP_FILE="awscliv2.zip"
+
+#-----------------------------------------------------------
+# Parameters for configure(set environments)
+#-----------------------------------------------------------
+CXX="g++"
+CXXFLAGS="-O -DS3FS_PTHREAD_ERRORCHECK=1"
+LDFLAGS=""
+CONFIGURE_OPTIONS="--prefix=/usr --with-openssl"
+
+#-----------------------------------------------------------
+# OS dependent variables
+#-----------------------------------------------------------
+#
+# Default values
+#
+PACKAGE_ENABLE_REPO_OPTIONS=""
+PACKAGE_INSTALL_ADDITIONAL_OPTIONS=""
+SHELLCHECK_DIRECT_INSTALL=0
+AWSCLI_DIRECT_INSTALL=1
+
+if [ "${CONTAINER_FULLNAME}" = "ubuntu:24.04" ]; then
+    PACKAGE_MANAGER_BIN="apt-get"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="autoconf autotools-dev clang-tidy openjdk-21-jre-headless fuse jq libfuse-dev libcurl4-openssl-dev libxml2-dev locales-all mailcap libtool pkg-config libssl-dev attr curl python3-pip unzip"
+    INSTALL_CHECKER_PKGS="cppcheck shellcheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "ubuntu:22.04" ]; then
+    PACKAGE_MANAGER_BIN="apt-get"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="autoconf autotools-dev clang-tidy openjdk-17-jre-headless fuse jq libfuse-dev libcurl4-openssl-dev libxml2-dev locales-all mime-support libtool pkg-config libssl-dev attr curl python3-pip unzip"
+    INSTALL_CHECKER_PKGS="cppcheck shellcheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "ubuntu:20.04" ]; then
+    PACKAGE_MANAGER_BIN="apt-get"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="autoconf autotools-dev openjdk-17-jre-headless fuse jq libfuse-dev libcurl4-openssl-dev libxml2-dev locales-all mime-support libtool pkg-config libssl-dev attr curl python3-pip unzip"
+    INSTALL_CHECKER_PKGS="cppcheck shellcheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "debian:bookworm" ]; then
+    PACKAGE_MANAGER_BIN="apt-get"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="autoconf autotools-dev clang-tidy openjdk-17-jre-headless fuse jq libfuse-dev libcurl4-openssl-dev libxml2-dev locales-all mime-support libtool pkg-config libssl-dev attr curl procps python3-pip unzip"
+    INSTALL_CHECKER_PKGS="cppcheck shellcheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "debian:bullseye" ]; then
+    PACKAGE_MANAGER_BIN="apt-get"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="autoconf autotools-dev openjdk-17-jre-headless fuse jq libfuse-dev libcurl4-openssl-dev libxml2-dev locales-all mime-support libtool pkg-config libssl-dev attr curl procps python3-pip unzip"
+    INSTALL_CHECKER_PKGS="cppcheck shellcheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "rockylinux:9" ]; then
+    PACKAGE_MANAGER_BIN="dnf"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+    PACKAGE_ENABLE_REPO_OPTIONS="--enablerepo=crb"
+
+    # [NOTE]
+    # Rocky Linux 9 (or CentOS Stream 9) images may have curl installation issues that
+    # conflict with the curl-minimal package.
+    #
+    PACKAGE_INSTALL_ADDITIONAL_OPTIONS="--allowerasing"
+
+    INSTALL_PACKAGES="clang-tools-extra curl-devel fuse fuse-devel gcc libstdc++-devel gcc-c++ glibc-langpack-en java-17-openjdk-headless jq libxml2-devel mailcap git automake make openssl openssl-devel attr diffutils curl python3 procps unzip xz https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm"
+    INSTALL_CHECKER_PKGS="cppcheck"
+    INSTALL_CHECKER_PKG_OPTIONS="--enablerepo=epel"
+
+    # [NOTE]
+    # For RockyLinux, ShellCheck is downloaded from the github archive and installed.
+    #
+    SHELLCHECK_DIRECT_INSTALL=1
+
+elif [ "${CONTAINER_FULLNAME}" = "rockylinux:8" ]; then
+    PACKAGE_MANAGER_BIN="dnf"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="clang-tools-extra curl-devel fuse fuse-devel gcc libstdc++-devel gcc-c++ glibc-langpack-en java-17-openjdk-headless jq libxml2-devel mailcap git automake make openssl openssl-devel attr diffutils curl python3 unzip"
+    INSTALL_CHECKER_PKGS="cppcheck"
+    INSTALL_CHECKER_PKG_OPTIONS="--enablerepo=powertools"
+
+    # [NOTE]
+    # For RockyLinux, ShellCheck is downloaded from the github archive and installed.
+    #
+    SHELLCHECK_DIRECT_INSTALL=1
+
+elif [ "${CONTAINER_FULLNAME}" = "centos:centos7" ]; then
+    # [NOTE]
+    # CentOS 7 will reach EOL on June 30, 2024.
+    # After EOL, we will prepare the environment for building and testing using the Vault repository.
+    # The following process switches from the EOL repository to Vault.
+    #
+    grep -v '^enabled=' /etc/yum.repos.d/CentOS-Base.repo | sed -e 's|gpgcheck=1|gpgcheck=1\nenabled=0|g' > /tmp/CentOS-Base.repo
+    cat /tmp/CentOS-Base.repo > /etc/yum.repos.d/CentOS-Base.repo
+
+    {
+        #
+        # CentOS-Vault.repo does not have C7.9.2009 entry, so add it.
+        #
+        echo ''
+        echo '# C7.9.2009'
+        echo '[C7.9.2009-base]'
+        echo 'name=CentOS-7.9.2009 - Base'
+        echo "baseurl=http://vault.centos.org/7.9.2009/os/\$basearch/"
+        echo 'gpgcheck=1'
+        echo 'gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7'
+        echo 'enabled=1'
+        echo ''
+        echo '[C7.9.2009-updates]'
+        echo 'name=CentOS-7.9.2009 - Updates'
+        echo "baseurl=http://vault.centos.org/7.9.2009/updates/\$basearch/"
+        echo 'gpgcheck=1'
+        echo 'gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7'
+        echo 'enabled=1'
+        echo ''
+        echo '[C7.9.2009-extras]'
+        echo 'name=CentOS-7.9.2009 - Extras'
+        echo "baseurl=http://vault.centos.org/7.9.2009/extras/\$basearch/"
+        echo 'gpgcheck=1'
+        echo 'gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7'
+        echo 'enabled=1'
+        echo ''
+        echo '[C7.9.2009-centosplus]'
+        echo 'name=CentOS-7.9.2009 - CentOSPlus'
+        echo "baseurl=http://vault.centos.org/7.9.2009/centosplus/\$basearch/"
+        echo 'gpgcheck=1'
+        echo 'gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7'
+        echo 'enabled=1'
+        echo ''
+        echo '[C7.9.2009-fasttrack]'
+        echo 'name=CentOS-7.9.2009 - Fasttrack'
+        echo "baseurl=http://vault.centos.org/7.9.2009/fasttrack/\$basearch/"
+        echo 'gpgcheck=1'
+        echo 'gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7'
+        echo 'enabled=1'
+        echo ''
+    } >> /etc/yum.repos.d/CentOS-Base.repo
+
+    yum clean all
+    yum update -q -y
+    #
+    # Finish change package repo to Vault.
+    #
+
+    PACKAGE_MANAGER_BIN="yum"
+    PACKAGE_UPDATE_OPTIONS="update -y"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    # [NOTE]
+    # ShellCheck version(0.3.8) is too low to check.
+    # And in this version, it cannot be passed due to following error.
+    # "shellcheck: ./test/integration-test-main.sh: hGetContents: invalid argument (invalid byte sequence)"
+    #
+    INSTALL_PACKAGES="curl-devel fuse fuse-devel gcc libstdc++-devel llvm-toolset-7-clang-tools-extra gcc-c++ glibc-langpack-en java-11-openjdk-headless libxml2-devel mailcap git automake make openssl openssl-devel attr curl python3 epel-release unzip"
+    INSTALL_CHECKER_PKGS="cppcheck jq"
+    INSTALL_CHECKER_PKG_OPTIONS="--enablerepo=epel"
+
+elif [ "${CONTAINER_FULLNAME}" = "fedora:40" ]; then
+    PACKAGE_MANAGER_BIN="dnf"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="clang clang-tools-extra curl-devel fuse fuse-devel gcc libstdc++-devel gcc-c++ glibc-langpack-en java-latest-openjdk-headless jq libxml2-devel mailcap git automake make openssl openssl-devel curl attr diffutils procps python3-pip unzip libcxx libcxx-devel"
+    INSTALL_CHECKER_PKGS="cppcheck ShellCheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "fedora:39" ]; then
+    PACKAGE_MANAGER_BIN="dnf"
+    PACKAGE_UPDATE_OPTIONS="update -y -qq"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="clang-tools-extra curl-devel fuse fuse-devel gcc libstdc++-devel gcc-c++ glibc-langpack-en java-latest-openjdk-headless jq libxml2-devel mailcap git automake make openssl openssl-devel curl attr diffutils procps python3-pip unzip"
+    INSTALL_CHECKER_PKGS="cppcheck ShellCheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "opensuse/leap:15" ]; then
+    PACKAGE_MANAGER_BIN="zypper"
+    PACKAGE_UPDATE_OPTIONS="refresh"
+    PACKAGE_INSTALL_OPTIONS="install -y"
+
+    INSTALL_PACKAGES="automake clang-tools curl-devel fuse fuse-devel gcc-c++ java-17-openjdk-headless jq libxml2-devel make openssl openssl-devel python3-pip curl attr ShellCheck procps unzip"
+    INSTALL_CHECKER_PKGS="cppcheck ShellCheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+elif [ "${CONTAINER_FULLNAME}" = "alpine:3.20" ]; then
+    PACKAGE_MANAGER_BIN="apk"
+    PACKAGE_UPDATE_OPTIONS="update --no-progress"
+    PACKAGE_INSTALL_OPTIONS="add --no-progress --no-cache"
+
+    INSTALL_PACKAGES="bash clang-extra-tools curl g++ make automake autoconf libtool git curl-dev fuse-dev jq libxml2-dev openssl coreutils procps attr sed mailcap openjdk17 aws-cli"
+    INSTALL_CHECKER_PKGS="cppcheck shellcheck"
+    INSTALL_CHECKER_PKG_OPTIONS=""
+
+    AWSCLI_DIRECT_INSTALL=0
+
+else
+    echo "No container configured for: ${CONTAINER_FULLNAME}"
+    exit 1
+fi
+
+#-----------------------------------------------------------
+# Install
+#-----------------------------------------------------------
+#
+# Update packages (ex. apt-get update -y -qq)
+#
+echo "${PRGNAME} [INFO] Updates."
+/bin/sh -c "${PACKAGE_MANAGER_BIN} ${PACKAGE_UPDATE_OPTIONS}"
+
+#
+# Install packages ( with cppcheck )
+#
+echo "${PRGNAME} [INFO] Install packages."
+/bin/sh -c "${PACKAGE_MANAGER_BIN} ${PACKAGE_ENABLE_REPO_OPTIONS} ${PACKAGE_INSTALL_OPTIONS} ${PACKAGE_INSTALL_ADDITIONAL_OPTIONS} ${INSTALL_PACKAGES}"
+
+echo "${PRGNAME} [INFO] Install cppcheck package."
+/bin/sh -c "${PACKAGE_MANAGER_BIN} ${INSTALL_CHECKER_PKG_OPTIONS} ${PACKAGE_INSTALL_OPTIONS} ${INSTALL_CHECKER_PKGS}"
+
+#
+# Install ShellCheck manually
+#
+if [ "${SHELLCHECK_DIRECT_INSTALL}" -eq 1 ]; then
+    echo "${PRGNAME} [INFO] Install shellcheck package from github archive."
+
+    if ! LATEST_SHELLCHECK_DOWNLOAD_URL=$(curl --silent --show-error https://api.github.com/repos/koalaman/shellcheck/releases/latest | jq -r '.assets[].browser_download_url | select(contains("linux.x86_64"))'); then
+        echo "Could not get shellcheck package url"
+        exit 1
+    fi
+    if ! curl -s -S -L -o /tmp/shellcheck.tar.xz "${LATEST_SHELLCHECK_DOWNLOAD_URL}"; then
+        echo "Failed to download shellcheck package from ${LATEST_SHELLCHECK_DOWNLOAD_URL}"
+        exit 1
+    fi
+    if ! tar -C /usr/bin/ -xf /tmp/shellcheck.tar.xz --no-anchored 'shellcheck' --strip=1; then
+        echo "Failed to extract and install shellcheck."
+        rm -f /tmp/shellcheck.tar.xz
+        exit 1
+    fi
+    rm -f /tmp/shellcheck.tar.xz
+fi
+
+# Check Java version
+java -version
+
+#
+# Install awscli
+#
+if [ "${AWSCLI_DIRECT_INSTALL}" -eq 1 ]; then
+    echo "${PRGNAME} [INFO] Install awscli2 package."
+
+    CURRENT_DIR=$(pwd)
+    cd /tmp || exit 1
+
+    curl "${AWSCLI_URI}" -o "${AWSCLI_ZIP_FILE}"
+    unzip  "${AWSCLI_ZIP_FILE}"
+    ./aws/install
+
+    cd "${CURRENT_DIR}" || exit 1
+fi
+
+#-----------------------------------------------------------
+# Set environment for configure
+#-----------------------------------------------------------
+echo "${PRGNAME} [INFO] Set environment for configure options"
+
+cat << EOF >> "${GITHUB_ENV}"
+CXX=${CXX}
+CXXFLAGS=${CXXFLAGS}
+LDFLAGS=${LDFLAGS}
+CONFIGURE_OPTIONS=${CONFIGURE_OPTIONS}
+EOF
+
+echo "${PRGNAME} [INFO] Finish Linux helper for installing packages."
+
+exit 0
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

.gitignore

@@ -42,6 +42,7 @@ config.status
 config.sub
 configure
 configure.scan
+configure.ac~
 depcomp
 install-sh
 libtool
@@ -56,6 +57,11 @@ test-driver
 compile
 missing
 
+#
+# man page
+#
+doc/man/s3fs.1
+
 #
 # object directories
 #
@@ -73,8 +79,25 @@ missing
 *.trs
 default_commit_hash
 src/s3fs
-src/test_*
+src/test_curl_util
+src/test_page_list
+src/test_string_util
+test/chaos-http-proxy-*
+test/junk_data
 test/s3proxy-*
+test/write_multiblock
+test/mknod_test
+test/truncate_read_file
+test/cr_filename
+
+#
+# Windows ports
+#
+*.dll
+*.exe
+fuse.pc
+WinFsp/
+bin/
 
 #
 # Local variables:

.travis.yml

@@ -1,119 +0,0 @@
-#
-# s3fs - FUSE-based file system backed by Amazon S3
-#
-# Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
-#
-
-language: cpp
-
-matrix:
-  include:
-    - os: linux
-      sudo: required
-      dist: trusty
-      cache: apt
-      before_install:
-        - sudo apt-get update -qq
-        - sudo apt-get install -qq attr cppcheck libfuse-dev openjdk-7-jdk
-        - sudo update-alternatives --set java /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java
-        - sudo pip install --upgrade awscli
-      script:
-        - ./autogen.sh
-        - ./configure CPPFLAGS='-I/usr/local/opt/openssl/include' CXXFLAGS='-std=c++03 -DS3FS_PTHREAD_ERRORCHECK=1'
-        - make
-        - make cppcheck
-        - make check -C src
-        - modprobe fuse
-        - make check -C test
-        - test/filter-suite-log.sh test/test-suite.log
-
-    - os: osx
-      osx_image: xcode9.2
-      cache:
-        directories:
-          - $HOME/Library/Caches/Homebrew
-          - /usr/local/Homebrew
-          - $HOME/.osx_cache
-      before_cache:
-        - brew cleanup
-        - cd /usr/local/Homebrew; find . \! -regex ".+\.git.+" -delete
-        - mkdir -p $HOME/.osx_cache; touch $HOME/.osx_cache/cached
-      before_install:
-        - TAPS="$(brew --repository)/Library/Taps";
-          if [ -e "$TAPS/caskroom/homebrew-cask" ]; then
-            rm -rf "$TAPS/caskroom/homebrew-cask";
-          fi;
-          if [ ! -f $HOME/.osx_cache/cached ]; then
-            brew tap homebrew/homebrew-cask;
-          else
-            HOMEBREW_NO_AUTO_UPDATE=1 brew tap homebrew/homebrew-cask;
-          fi
-        - HOMEBREW_NO_AUTO_UPDATE=1 brew cask install osxfuse
-        - S3FS_BREW_PACKAGES='awscli cppcheck truncate';
-          for s3fs_brew_pkg in ${S3FS_BREW_PACKAGES}; do
-            brew list | grep -q ${s3fs_brew_pkg};
-            if [ $? -eq 0 ]; then
-              brew outdated | grep -q ${s3fs_brew_pkg} && HOMEBREW_NO_AUTO_UPDATE=1 brew upgrade ${s3fs_brew_pkg};
-            else
-              HOMEBREW_NO_AUTO_UPDATE=1 brew install ${s3fs_brew_pkg};
-            fi;
-          done
-        - if [ -f /Library/Filesystems/osxfusefs.fs/Support/load_osxfusefs ]; then
-            sudo chmod +s /Library/Filesystems/osxfusefs.fs/Support/load_osxfusefs;
-          elif [ -f /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse ]; then
-            sudo chmod +s /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse;
-          fi
-        - sudo ln -s /usr/local/opt/coreutils/bin/gstdbuf /usr/local/bin/stdbuf
-      script:
-        - ./autogen.sh
-        - PKG_CONFIG_PATH=/usr/local/opt/curl/lib/pkgconfig:/usr/local/opt/openssl/lib/pkgconfig ./configure CXXFLAGS='-std=c++03 -DS3FS_PTHREAD_ERRORCHECK=1'
-        - make
-        - make cppcheck
-        - make check -C src
-        - if [ -f /Library/Filesystems/osxfusefs.fs/Support/load_osxfusefs ]; then /Library/Filesystems/osxfusefs.fs/Support/load_osxfusefs ; elif [ -f /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse ]; then /Library/Filesystems/osxfuse.fs/Contents/Resources/load_osxfuse ; fi
-        - make check -C test
-        - test/filter-suite-log.sh test/test-suite.log
-
-
-    - os: linux-ppc64le
-      sudo: required
-      dist: trusty
-      cache: apt
-      before_install:
-        - sudo add-apt-repository -y ppa:openjdk-r/ppa 
-        - sudo apt-get update -qq
-        - sudo apt-get install -qq attr cppcheck libfuse-dev openjdk-7-jdk
-        - sudo update-alternatives --set java /usr/lib/jvm/java-7-openjdk-ppc64el/jre/bin/java
-        - sudo pip install --upgrade awscli
-      script:
-        - ./autogen.sh
-        - ./configure CPPFLAGS='-I/usr/local/opt/openssl/include' CXXFLAGS='-std=c++03 -DS3FS_PTHREAD_ERRORCHECK=1'
-        - make
-        - make cppcheck
-        - make check -C src
-        - modprobe fuse
-        - make check -C test
-        - test/filter-suite-log.sh test/test-suite.log
-
-#
-# Local variables:
-# tab-width: 4
-# c-basic-offset: 4
-# End:
-# vim600: noet sw=4 ts=4 fdm=marker
-# vim<600: noet sw=4 ts=4
-#

COMPILATION.md

@@ -6,7 +6,9 @@ If you want specific instructions for some distributions, check the [wiki](https
 
 Keep in mind using the pre-built packages when available.
 
-1. Ensure your system satisfies build and runtime dependencies for:
+## Compilation on Linux
+
+### Ensure your system satisfies build and runtime dependencies for:
 
 * fuse >= 2.8.4
 * automake
@@ -14,16 +16,101 @@ Keep in mind using the pre-built packages when available.
 * make
 * libcurl
 * libxml2
-* openssl
+* openssl/gnutls/nss
+    * Please prepare the library according to the OS on which you will compile.
+    * It is necessary to match the library used by libcurl.
+    * Install the OpenSSL, GnuTLS or NSS devel package.
+* mime.types (the package providing depends on the OS)
+	* s3fs tries to detect `/etc/mime.types` as default regardless of the OS
+	* Else s3fs tries to detect `/etc/apache2/mime.types` if OS is macOS
+	* s3fs exits with an error if these files are not exist
+	* Alternatively, you can set mime.types file path with `mime` option without detecting these default files
 * pkg-config (or your OS equivalent)
 
-2. Then compile from master via the following commands:
+* NOTE  
+    If you have any trouble about details on required packages, see `INSTALL_PACKAGES` in [linux-ci-helper.sh](https://github.com/s3fs-fuse/s3fs-fuse/blob/master/.github/workflows/linux-ci-helper.sh).
 
-```
-git clone https://github.com/s3fs-fuse/s3fs-fuse.git
-cd s3fs-fuse
-./autogen.sh
-./configure
-make
-sudo make install
-```
+### Then compile from master via the following commands:
+1. Clone the source code:
+    ```sh
+    git clone https://github.com/s3fs-fuse/s3fs-fuse.git
+    ```
+2. Configuration:
+    ```sh
+    cd s3fs-fuse
+    ./autogen.sh
+    ./configure
+    ```
+    Depending on the TLS library (OpenSSL/GnuTLS/NSS), add `--with-openssl`, `--with-gnutls` or `--with-nss` when executing `configure`. (If omitted, it is equivalent to `--with-openssl`.)
+3. Building:
+    ```sh
+    make
+    ```
+4. Installing:
+    ```sh
+    sudo make install
+    ```
+
+### NOTE - The required libraries/components required to run s3fs are:
+
+* fuse >= 2.8.4
+* libcurl
+* libxml2
+* openssl/gnutls/nss
+* mime.types (the package providing depends on the OS)
+
+
+## Compilation on Windows (using MSYS2)
+
+On Windows, use [MSYS2](https://www.msys2.org/) to compile for itself.
+
+1. Install [WinFsp](https://github.com/billziss-gh/winfsp) to your machine.
+2. Install dependencies onto MSYS2:
+
+   ```sh
+   pacman -S git autoconf automake gcc make pkg-config openssl-devel libcurl-devel libxml2-devel libzstd-devel
+   ```
+
+3. Clone this repository, then change directory into the cloned one.
+4. Copy WinFsp files to the directory:
+
+   ```sh
+   cp -r "/c/Program Files (x86)/WinFsp" "./WinFsp"
+   ```
+
+5. Write `fuse.pc` to resolve the package correctly:
+
+   ```sh
+   cat > ./fuse.pc << 'EOS'
+   arch=x64
+   prefix=${pcfiledir}/WinFsp
+   incdir=${prefix}/inc/fuse
+   implib=${prefix}/bin/winfsp-${arch}.dll
+
+   Name: fuse
+   Description: WinFsp FUSE compatible API
+   Version: 2.8.4
+   URL: http://www.secfs.net/winfsp/
+   Libs: "${implib}"
+   Cflags: -I"${incdir}"
+   EOS
+   ```
+
+6. Compile using the command line:
+
+   ```sh
+   ./autogen.sh
+   PKG_CONFIG_PATH="$PKG_CONFIG_PATH:$(pwd)" ./configure
+   make CXXFLAGS="-I/usr/include"
+   ```
+
+7. Copy binary files to distribute at one place:
+
+   ```sh
+   mkdir ./bin
+   cp ./src/s3fs.exe ./bin/
+   cp ./WinFsp/bin/winfsp-x64.dll ./bin/
+   cp /usr/bin/msys-*.dll ./bin/
+   ```
+
+8. Distribute these files.

ChangeLog

@@ -1,6 +1,120 @@
 ChangeLog for S3FS
 ------------------
 
+Version 1.95 -- 25 Oct, 2024 (major changes only)
+#2424 - Add ipresolve option to select IPv4- or IPv6-only
+#2443 - Retry request on HTTP 429 error
+#2448 - Changed s3fs logo
+#2455 - Fix deadlock in FdManager::ChangeEntityToTempPath
+#2487 - #2492 - #2493 - Enable static lock checking and fix locking errors
+#2506 - #2517 - Fix Windows compilation
+#2515 - Fix FreeBSD support
+#2532 - Fix use-after-free in FdManager::ChangeEntityToTempPath
+
+Version 1.94 -- 23 Feb, 2024 (major changes only)
+#2409 - Fixed a bug that mounting with ksmid specified to fail
+#2404 - Fixed ordering problem between fdatasync and flush
+#2399 - Fixed ListBucket/IAM edge cases
+#2376 - Corrected list_bucket to search in stat cache during creating new file
+#2369 - Make dir size 4096 not 0
+#2351 - Added option free_space_ratio to control cache size
+#2325 - Fixed a bug upload boundary calculation in StreamUpload
+#2298 - Abort MPU when MPU fails to avoid litter
+#2261 - Use explicit ownership for memory
+#2179 - Require C++11
+
+Version 1.93 -- 19 Jul, 2023 (major changes only)
+#2212 - Allow listing implicit directories
+#2194 - #2209 - #2211 - #2214 - #2215 - Fix thread safety issues
+#2191 - #2201 - Add support for FUSE-T on macOS
+
+Version 1.92 -- 21 May, 2023 (major changes only)
+#1802 - #2104 - New option: streamupload
+#1922 - Enable noobj_cache by default
+#1927 - #2101 - New option: credlib and credlib_ops
+#1957 - Fixed a bug that regular files could not be created by mknod
+#1964 - Added stat information to the mount point
+#1970 - #1986 - Enable notsup_compat_dir by default
+#2000 - #2001 - Set mtime/ctime/atime of all objects as nanosecond
+#2065 - Compatible with OpenSSL 3.0
+#2075 - Added proxy and proxy_cred_file option
+#2135 - Changed to rename cache files when renaming large files
+#2148 - New option: bucket_size
+
+Version 1.91 -- 07 Mar, 2022 (major changes only)
+#1753 - Fix RowFlush can not upload last part smaller than 5MB using NoCacheMultipartPost
+#1760 - Fix IAM role retrieval from IMDSv2
+#1801 - Add option to allow unsigned payloads
+#1809 - Fix mixupload return EntityTooSmall while a copypart is less than 5MB after split
+#1855 - Allow compilation on Windows via MSYS2
+#1868 - Handle utimensat UTIME_NOW and UTIME_OMIT special values
+#1871 - #1880 - Preserve sub-second precision in more situations
+#1879 - Always flush open files with O_CREAT flag
+#1887 - Fixed not to call Flush even if the file size is increased
+#1888 - Include climits to support musl libc
+
+Version 1.90 -- 07 Aug, 2021 (major changes only)
+#1599 - Don't ignore nomultipart when storage is low
+#1600 - #1602 - #1604 - #1617 - #1619 - #1620 - #1623 - #1624 - Fix POSIX compatibility issues found by pjdfstest
+#1630 - Fail CheckBucket when S3 returns PermanentRedirect
+#1640 - #1655 - Do not create zero-byte object when creating file
+#1648 - Allow arbitrary size AWS secret keys
+#1668 - #1678 - Fix race conditions
+#1696 - Set explicit Content-Length: 0 when initiating MPU
+#1681 - Set CURLOPT_UNRESTRICTED_AUTH when authenticating
+#1723 - Add jitter to avoid thundering herd
+#1728 - Loosen CheckBucket to check only the bucket
+#1729 - Add support for AWS-style environment variables
+
+Version 1.89 -- 22 Feb, 2021 (major changes only)
+#1520 - #1525 - #1534 - #1549 - Propagate S3 errors to errno more accurately
+#1546 - #1559 - Allow writing > 5 GB single-part objects supported by some non-AWS S3
+#1553 - #1555 - Allow configuration of multipart copy size and limit to 5 GB
+#1562 - Allow configuration of multipart upload threshold and reduce default to 25 MB
+#1565 - Set default stat timeout to 900 seconds correctly
+#1579 - #1582 - Fix data corruption while updating metadata with use_cache
+
+Version 1.88 -- 4 Jan, 2021 (major changes only)
+#1349 - Fixed a bug about move file over limit of ensure space
+#1363 - #1366 - #1439 - Fix multiple race conditions
+#1365 - Dynamically determine whether lseek extended options are supported
+#1374 - Add support for deep archive storage class
+#1385 - Plug FdEntity leaks
+#1388 - Fix use_session_token option parsing
+#1392 - Allow 32-bit platforms to upload single-part objects > 2 GB
+#1404 - Fix dead lock in disk insufficient and optimize code
+#1408 - Ensure environment variable is set when using ECS
+#1413 - not call put headers if not exist pending meta
+#1425 - Do not send SSE headers during bucket creation
+#1432 - Add sigv4 only option
+#1437 - Add atime and correct atime/mtime/ctime operations
+#1447 - Fixed a bug that symlink could not be read after restarting s3fs
+#1448 - #1467 - Periodically flush written data to reduce temporary local storage
+#1449 - Added logfile option for non-syslog logging
+#1462 - Add AWS IMDSv2 support
+#1502 - #1503 - #1505 - Fix multiple issues when retrying requests
+
+Version 1.87 -- 10 Aug, 2020 (major changes only)
+#1244 - use correct content-type when complete multipart upload
+#1265 - Fixed a bug of stats cache compression
+#1271 - Fixed the truncation bug of stat file for cache file
+#1274 - Improved strictness of cache file stats(file)
+#1277 - Fixed insufficient upload size for mix multipart upload
+#1282 - Warn about missing MIME types instead of exiting
+#1285 - Not abort process by exception threw from s3fs_strtoofft
+#1286 - Support Google Cloud Storage headers
+#1295 - Added a parameter to output body to curldbg option
+#1302 - Fix renames of open files with nocopyapi option
+#1303 - Relink cache stats file atomically via rename
+#1305 - Ignore case when comparing ETags
+#1306 - Retry with exponential backoff during 500 error
+#1312 - Fixed a bug about serializing from cache file
+#1313 - Fixed about ParallelMixMultipartUpload
+#1316 - Add support for glacier storage class
+#1319 - Fixed upload error about mixuploading sparse file and truncating file
+#1334 - Added SIGUSR1 option for cache file integrity test
+#1341 - Change default stat_cache_expire
+
 Version 1.86 -- 04 Feb, 2020 (major changes only)
 #965 - enable various optimizations when using modern curl
 #1002 - allow SSE-C keys to have NUL bytes
@@ -431,7 +545,7 @@ issue #3 - Fixed local timezone was incorrectly being applied to IAM and Last-Mo
 issue #4 - Fix compilation error on MacOSX with missing const
 
 Version 1.74 -- Nov 24, 2013
-This version is initial version on Github, same as on GoogleCodes(s3fs).
+This version is initial version on GitHub, same as on GoogleCodes(s3fs).
 https://github.com/s3fs-fuse/s3fs-fuse/releases/tag/v1.74
 see more detail on googlecodes: https://code.google.com/p/s3fs/downloads/detail?name=s3fs-1.74.tar.gz
 

Makefile.am

@@ -17,6 +17,7 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ######################################################################
+
 SUBDIRS=src test doc
 
 EXTRA_DIST=doc default_commit_hash
@@ -28,18 +29,60 @@ dist-hook:
 release : dist ../utils/release.sh
 	../utils/release.sh $(DIST_ARCHIVES)
 
+.PHONY: cppcheck shellcheck
+
 cppcheck:
 	cppcheck --quiet --error-exitcode=1 \
             --inline-suppr \
-            --std=c++03 \
+            --std=c++11 \
             --xml \
             -D HAVE_ATTR_XATTR_H \
             -D HAVE_SYS_EXTATTR_H \
             -D HAVE_MALLOC_TRIM \
             -U CURLE_PEER_FAILED_VERIFICATION \
-            -U P_tmpdir \
             -U ENOATTR \
             --enable=warning,style,information,missingInclude \
             --suppress=missingIncludeSystem \
             --suppress=unmatchedSuppression \
+            --suppress=useStlAlgorithm \
+            --suppress=checkLevelNormal \
+            --suppress=normalCheckLevelMaxBranches \
             src/ test/
+
+#
+# ShellCheck
+#
+SHELLCHECK_CMD = shellcheck
+SHELLCHECK_SH_OPT = --shell=sh
+SHELLCHECK_BASH_OPT = --shell=bash
+
+# [NOTE]
+# To control error warnings as a whole, specify the "SC<number>" with the following variables.
+#
+SHELLCHECK_COMMON_IGN = --exclude=SC1091
+SHELLCHECK_CUSTOM_IGN = --exclude=SC1091
+
+shellcheck:
+	@if type shellcheck > /dev/null 2>&1; then \
+		echo "* ShellCheck version"; \
+		$(SHELLCHECK_CMD) --version; \
+		echo ""; \
+		echo "* Check all sh files with ShellCheck"; \
+		LC_ALL=C.UTF-8 $(SHELLCHECK_CMD) $(SHELLCHECK_SH_OPT) $(SHELLCHECK_COMMON_IGN) $$(grep '#![[:space:]]*/bin/sh' $$(find . -type f -name \*.sh) | sed -e 's|^\(.*\):#\!.*$$|\1|g') || exit 1; \
+		echo "-> No error was detected."; \
+		echo ""; \
+		echo "* Check all bash files with ShellCheck"; \
+		LC_ALL=C.UTF-8 $(SHELLCHECK_CMD) $(SHELLCHECK_BASH_OPT) $(SHELLCHECK_COMMON_IGN) $$(grep '#![[:space:]]*/bin/bash' $$(find . -type f -name \*.sh) | sed -e 's|^\(.*\):#\!.*$$|\1|g') || exit 1; \
+		echo "-> No error was detected."; \
+	else \
+		echo "* ShellCheck is not installed, so skip this."; \
+	fi
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

README.md

@@ -1,14 +1,19 @@
 # s3fs
 
-s3fs allows Linux and macOS to mount an S3 bucket via FUSE.
-s3fs preserves the native object format for files, allowing use of other
-tools like [AWS CLI](https://github.com/aws/aws-cli).
-[![Build Status](https://travis-ci.org/s3fs-fuse/s3fs-fuse.svg?branch=master)](https://travis-ci.org/s3fs-fuse/s3fs-fuse)
+s3fs allows Linux, macOS, and FreeBSD to mount an S3 bucket via [FUSE(Filesystem in Userspace)](https://github.com/libfuse/libfuse).  
+s3fs makes you operate files and directories in S3 bucket like a local file system.  
+s3fs preserves the native object format for files, allowing use of other tools like [AWS CLI](https://github.com/aws/aws-cli).  
+
+[![s3fs-fuse CI](https://github.com/s3fs-fuse/s3fs-fuse/actions/workflows/ci.yml/badge.svg)](https://github.com/s3fs-fuse/s3fs-fuse/actions/workflows/ci.yml)
+[![Twitter Follow](https://img.shields.io/twitter/follow/s3fsfuse.svg?style=social&label=Follow)](https://twitter.com/s3fsfuse)
+
+![s3fs-fuse](https://github.com/ggtakec/s3fs-fuse-images/blob/master/images/s3fslogo.png)
 
 ## Features
 
 * large subset of POSIX including reading/writing files, directories, symlinks, mode, uid/gid, and extended attributes
-* compatible with Amazon S3, Google Cloud Storage, and other S3-based object stores
+* compatible with Amazon S3, and other [S3-based object stores](https://github.com/s3fs-fuse/s3fs-fuse/wiki/Non-Amazon-S3)
+* allows random writes and appends
 * large files via multi-part upload
 * renames via server-side copy
 * optional server-side encryption
@@ -29,6 +34,12 @@ Many systems provide pre-built packages:
   sudo yum install s3fs-fuse
   ```
 
+* Arch Linux:
+
+  ```
+  sudo pacman -S s3fs-fuse
+  ```
+
 * Debian 9 and Ubuntu 16.04 or newer:
 
   ```
@@ -47,7 +58,7 @@ Many systems provide pre-built packages:
   sudo emerge net-fs/s3fs
   ```
 
-* RHEL and CentOS 7 or newer through via EPEL:
+* RHEL and CentOS 7 or newer via EPEL:
 
   ```
   sudo yum install epel-release
@@ -60,13 +71,23 @@ Many systems provide pre-built packages:
   sudo zypper install s3fs
   ```
 
-* macOS via [Homebrew](https://brew.sh/):
+* macOS 10.12 and newer via [Homebrew](https://brew.sh/):
 
   ```
-  brew cask install osxfuse
-  brew install s3fs
+  brew install --cask macfuse
+  brew install gromgit/fuse/s3fs-mac
   ```
 
+* FreeBSD:
+
+  ```
+  pkg install fusefs-s3fs
+  ```
+
+* Windows:
+
+  Windows has its own install, seening in [this link](COMPILATION.md)
+
 Otherwise consult the [compilation instructions](COMPILATION.md).
 
 ## Examples
@@ -74,11 +95,13 @@ Otherwise consult the [compilation instructions](COMPILATION.md).
 s3fs supports the standard
 [AWS credentials file](https://docs.aws.amazon.com/cli/latest/userguide/cli-config-files.html)
 stored in `${HOME}/.aws/credentials`.  Alternatively, s3fs supports a custom passwd file.
+Finally s3fs recognizes the `AWS_ACCESS_KEY_ID`, `AWS_SECRET_ACCESS_KEY`, and `AWS_SESSION_TOKEN`
+environment variables.
 
 The default location for the s3fs password file can be created:
 
-* using a .passwd-s3fs file in the users home directory (i.e. ${HOME}/.passwd-s3fs)
-* using the system-wide /etc/passwd-s3fs file
+* using a `.passwd-s3fs` file in the users home directory (i.e. `${HOME}/.passwd-s3fs`)
+* using the system-wide `/etc/passwd-s3fs` file
 
 Enter your credentials in a file `${HOME}/.passwd-s3fs` and set
 owner-only permissions:
@@ -102,12 +125,6 @@ s3fs mybucket /path/to/mountpoint -o passwd_file=${HOME}/.passwd-s3fs -o dbgleve
 
 You can also mount on boot by entering the following line to `/etc/fstab`:
 
-```
-s3fs#mybucket /path/to/mountpoint fuse _netdev,allow_other 0 0
-```
-
-or
-
 ```
 mybucket /path/to/mountpoint fuse.s3fs _netdev,allow_other 0 0
 ```
@@ -121,17 +138,9 @@ s3fs mybucket /path/to/mountpoint -o passwd_file=${HOME}/.passwd-s3fs -o url=htt
 or(fstab)
 
 ```
-s3fs#mybucket /path/to/mountpoint fuse _netdev,allow_other,use_path_request_style,url=https://url.to.s3/ 0 0
+mybucket /path/to/mountpoint fuse.s3fs _netdev,allow_other,use_path_request_style,url=https://url.to.s3/ 0 0
 ```
 
-To use IBM IAM Authentication, use the `-o ibm_iam_auth` option, and specify the Service Instance ID and API Key in your credentials file:
-
-```
-echo SERVICEINSTANCEID:APIKEY > /path/to/passwd
-```
-
-The Service Instance ID is only required when using the `-o create_bucket` option.
-
 Note: You may also want to create the global credential file first
 
 ```
@@ -145,9 +154,9 @@ Note2: You may also need to make sure `netfs` service is start on boot
 
 Generally S3 cannot offer the same performance or semantics as a local file system.  More specifically:
 
-* random writes or appends to files require rewriting the entire file
+* random writes or appends to files require rewriting the entire object, optimized with multi-part upload copy
 * metadata operations such as listing directories have poor performance due to network latency
-* [eventual consistency](https://en.wikipedia.org/wiki/Eventual_consistency) can temporarily yield stale data([Amazon S3 Data Consistency Model](https://docs.aws.amazon.com/AmazonS3/latest/dev/Introduction.html#ConsistencyModel))
+* non-AWS providers may have [eventual consistency](https://en.wikipedia.org/wiki/Eventual_consistency) so reads can temporarily yield stale data (AWS offers read-after-write consistency [since Dec 2020](https://aws.amazon.com/about-aws/whats-new/2020/12/amazon-s3-now-delivers-strong-read-after-write-consistency-automatically-for-all-applications/))
 * no atomic renames of files or directories
 * no coordination between multiple clients mounting the same bucket
 * no hard links
@@ -155,6 +164,8 @@ Generally S3 cannot offer the same performance or semantics as a local file syst
 
 ## References
 
+* [CSI for S3](https://github.com/ctrox/csi-s3) - Kubernetes CSI driver
+* [docker-s3fs-client](https://github.com/efrecon/docker-s3fs-client) - Docker image containing s3fs
 * [goofys](https://github.com/kahing/goofys) - similar to s3fs but has better performance and less POSIX compatibility
 * [s3backer](https://github.com/archiecobbs/s3backer) - mount an S3 bucket as a single file
 * [S3Proxy](https://github.com/gaul/s3proxy) - combine with s3fs to mount Backblaze B2, EMC Atmos, Microsoft Azure, and OpenStack Swift buckets
@@ -172,4 +183,3 @@ Generally S3 cannot offer the same performance or semantics as a local file syst
 Copyright (C) 2010 Randy Rizun <rrizun@gmail.com>
 
 Licensed under the GNU GPL version 2
-

autogen.sh

@@ -1,5 +1,5 @@
-#! /bin/sh
-
+#!/bin/sh
+#
 # This file is part of S3FS.
 # 
 # Copyright 2009, 2010 Free Software Foundation, Inc.
@@ -21,21 +21,24 @@
 
 echo "--- Make commit hash file -------"
 
-SHORTHASH="unknown"
-type git > /dev/null 2>&1
-if [ $? -eq 0 -a -d .git ]; then
-	RESULT=`git rev-parse --short HEAD`
-	if [ $? -eq 0 ]; then
-		SHORTHASH=${RESULT}
-	fi
+SHORTHASH=""
+if command -v git > /dev/null 2>&1 && test -d .git; then
+    if SHORTHASH=$(git rev-parse --short HEAD); then
+        echo " -> Git commit hash : ${SHORTHASH}"
+    else
+        echo " -> Not get git commit hash"
+    fi
+else
+    echo " -> Not found git command or .git directory"
 fi
-echo ${SHORTHASH} > default_commit_hash
+echo "${SHORTHASH}" > default_commit_hash
 
 echo "--- Finished commit hash file ---"
 
 echo "--- Start autotools -------------"
 
-aclocal \
+autoupdate \
+&& aclocal \
 && autoheader \
 && automake --add-missing \
 && autoconf
@@ -44,3 +47,11 @@ echo "--- Finished autotools ----------"
 
 exit 0
 
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

configure.ac

@@ -19,11 +19,11 @@
 ######################################################################
 dnl Process this file with autoconf to produce a configure script.
 
-AC_PREREQ(2.59)
-AC_INIT(s3fs, 1.86)
+AC_PREREQ([2.69])
+AC_INIT([s3fs],[1.95])
 AC_CONFIG_HEADER([config.h])
 
-AC_CANONICAL_SYSTEM
+AC_CANONICAL_TARGET
 AM_INIT_AUTOMAKE([foreign])
 
 AC_PROG_CXX
@@ -32,8 +32,9 @@ AC_PROG_CC
 AC_CHECK_HEADERS([sys/xattr.h])
 AC_CHECK_HEADERS([attr/xattr.h])
 AC_CHECK_HEADERS([sys/extattr.h])
+AC_CHECK_FUNCS([fallocate])
 
-CXXFLAGS="$CXXFLAGS -Wall -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2"
+CXXFLAGS="-Wall -fno-exceptions -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=3 -std=c++11 $CXXFLAGS"
 
 dnl ----------------------------------------------
 dnl For macOS
@@ -47,6 +48,7 @@ case "$target" in
    *-darwin* )
       # Do something specific for mac
       min_fuse_version=2.7.3
+      min_fuse_t_version=1.0.20
       ;;
    *)
       # Default Case
@@ -55,11 +57,24 @@ case "$target" in
       ;;
 esac
 
+dnl ----------------------------------------------
+dnl Checking the FUSE library
+dnl ----------------------------------------------
+dnl Distinguish between Linux (libfuse) and macOS (FUSE-T).
+dnl
+found_fuse_t=no
+PKG_CHECK_MODULES([FUSE_T], [fuse-t >= ${min_fuse_t_version}], [found_fuse_t=yes], [found_fuse_t=no])
+
+AS_IF([test "$found_fuse_t" = "yes"],
+  [PKG_CHECK_MODULES([fuse_library_checking], [fuse-t >= ${min_fuse_t_version}])],
+  [PKG_CHECK_MODULES([fuse_library_checking], [fuse >= ${min_fuse_version}])])
+
 dnl ----------------------------------------------
 dnl Choice SSL library
 dnl ----------------------------------------------
 auth_lib=na
 nettle_lib=no
+use_openssl_30=no
 
 dnl
 dnl nettle library
@@ -179,15 +194,24 @@ AS_IF(
 
 dnl
 dnl For PKG_CONFIG before checking nss/gnutls.
-dnl this is redundant checking, but we need checking before following.
 dnl
-PKG_CHECK_MODULES([common_lib_checking], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 ])
 
 AC_MSG_CHECKING([compile s3fs with])
 case "${auth_lib}" in
 openssl)
   AC_MSG_RESULT(OpenSSL)
-  PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 libcrypto >= 0.9 ])
+  AS_IF([test "$found_fuse_t" = "yes"],
+    [PKG_CHECK_MODULES([DEPS], [fuse-t >= ${min_fuse_t_version} libcurl >= 7.0 libxml-2.0 >= 2.6 libcrypto >= 0.9 ])],
+    [PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 libcrypto >= 0.9 ])])
+
+  AC_MSG_CHECKING([openssl 3.0 or later])
+  AC_COMPILE_IFELSE(
+    [AC_LANG_PROGRAM([[#include <openssl/opensslv.h>
+                       #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x30000000L
+                         #error "found openssl is 3.0 or later(so compiling is stopped with error)"
+                       #endif]], [[]])],
+    [AC_MSG_RESULT(no)],
+    [AC_MSG_RESULT(yes); use_openssl_30=yes])
   ;;
 gnutls)
   AC_MSG_RESULT(GnuTLS-gcrypt)
@@ -196,7 +220,9 @@ gnutls)
   AS_IF([test "$gnutls_nettle" = ""], [AC_CHECK_LIB(gcrypt, gcry_control, [gnutls_nettle=0])])
   AS_IF([test $gnutls_nettle = 0],
     [
-      PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 gnutls >= 2.12.0 ])
+      AS_IF([test "$found_fuse_t" = "yes"],
+        [PKG_CHECK_MODULES([DEPS], [fuse-t >= ${min_fuse_t_version} libcurl >= 7.0 libxml-2.0 >= 2.6 gnutls >= 2.12.0 ])],
+        [PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 gnutls >= 2.12.0 ])])
       LIBS="-lgnutls -lgcrypt $LIBS"
       AC_MSG_CHECKING([gnutls is build with])
       AC_MSG_RESULT(gcrypt)
@@ -210,7 +236,9 @@ nettle)
   AS_IF([test "$gnutls_nettle" = ""], [AC_CHECK_LIB(nettle, nettle_MD5Init, [gnutls_nettle=1])])
   AS_IF([test $gnutls_nettle = 1],
     [
-      PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 nettle >= 2.7.1 ])
+      AS_IF([test "$found_fuse_t" = "yes"],
+        [PKG_CHECK_MODULES([DEPS], [fuse-t >= ${min_fuse_t_version} libcurl >= 7.0 libxml-2.0 >= 2.6 nettle >= 2.7.1 ])],
+        [PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 nettle >= 2.7.1 ])])
       LIBS="-lgnutls -lnettle $LIBS"
       AC_MSG_CHECKING([gnutls is build with])
       AC_MSG_RESULT(nettle)
@@ -219,7 +247,9 @@ nettle)
   ;;
 nss)
   AC_MSG_RESULT(NSS)
-  PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 nss >= 3.15.0 ])
+  AS_IF([test "$found_fuse_t" = "yes"],
+        [PKG_CHECK_MODULES([DEPS], [fuse-t >= ${min_fuse_t_version} libcurl >= 7.0 libxml-2.0 >= 2.6 nss >= 3.15.0 ])],
+        [PKG_CHECK_MODULES([DEPS], [fuse >= ${min_fuse_version} libcurl >= 7.0 libxml-2.0 >= 2.6 nss >= 3.15.0 ])])
   ;;
 *)
   AC_MSG_ERROR([unknown ssl library type.])
@@ -227,6 +257,7 @@ nss)
 esac
 
 AM_CONDITIONAL([USE_SSL_OPENSSL], [test "$auth_lib" = openssl])
+AM_CONDITIONAL([USE_SSL_OPENSSL_30], [test "$use_openssl_30" = yes])
 AM_CONDITIONAL([USE_SSL_GNUTLS], [test "$auth_lib" = gnutls -o "$auth_lib" = nettle])
 AM_CONDITIONAL([USE_GNUTLS_NETTLE], [test "$auth_lib" = nettle])
 AM_CONDITIONAL([USE_SSL_NSS], [test "$auth_lib" = nss])
@@ -309,24 +340,49 @@ AC_COMPILE_IFELSE(
   ]
 )
 
+dnl ----------------------------------------------
+dnl dl library
+dnl ----------------------------------------------
+AC_CHECK_LIB([dl], [dlopen, dlclose, dlerror, dlsym], [], [AC_MSG_ERROR([Could not found dlopen, dlclose, dlerror and dlsym])])
+
+dnl ----------------------------------------------
+dnl build date
+dnl ----------------------------------------------
+AC_SUBST([MAN_PAGE_DATE], [$(date -r doc/man/s3fs.1.in +"%B %Y")])
+
 dnl ----------------------------------------------
 dnl output files
 dnl ----------------------------------------------
-AC_CONFIG_FILES(Makefile src/Makefile test/Makefile doc/Makefile)
+AC_CONFIG_FILES(Makefile
+                src/Makefile
+                test/Makefile
+                doc/Makefile
+                doc/man/s3fs.1)
 
 dnl ----------------------------------------------
 dnl short commit hash
 dnl ----------------------------------------------
-AC_CHECK_PROG([GITCMD], [git —version], [yes], [no])
+AC_CHECK_PROG([GITCMD], [git --version], [yes], [no])
 AS_IF([test -d .git], [DOTGITDIR=yes], [DOTGITDIR=no])
 
 AC_MSG_CHECKING([github short commit hash])
 if test "x${GITCMD}" = "xyes" -a "x${DOTGITDIR}" = "xyes"; then
-    GITCOMMITHASH=`git rev-parse --short HEAD`
+    TMP_GITCOMMITHASH=`git rev-parse --short HEAD`
+    UNTRACKED_FILES=`git status -s --untracked-files=no`
+    if test -n "${UNTRACKED_FILES}"; then
+       GITCOMMITHASH="(commit:${TMP_GITCOMMITHASH} +untracked files)"
+    else
+       GITCOMMITHASH="(commit:${TMP_GITCOMMITHASH})"
+    fi
 elif test -f default_commit_hash; then
-    GITCOMMITHASH=`cat default_commit_hash`
+    TMP_GITCOMMITHASH=`cat default_commit_hash`
+    if test -n "${TMP_GITCOMMITHASH}"; then
+       GITCOMMITHASH="(base commit:${TMP_GITCOMMITHASH})"
+    else
+       GITCOMMITHASH=""
+    fi
 else
-    GITCOMMITHASH="unknown"
+    GITCOMMITHASH=""
 fi
 AC_MSG_RESULT([${GITCOMMITHASH}])
 
@@ -341,3 +397,11 @@ dnl ----------------------------------------------
 dnl end configuration
 dnl ----------------------------------------------
 
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

doc/man/s3fs.1.in

@@ -1,4 +1,4 @@
-.TH S3FS "1" "February 2011" "S3FS" "User Commands"
+.TH S3FS "1" "@MAN_PAGE_DATE@" "S3FS" "User Commands"
 .SH NAME
 S3FS \- FUSE-based file system backed by Amazon S3
 .SH SYNOPSIS
@@ -40,7 +40,7 @@ Password files can be stored in two locations:
  \fB$HOME/.passwd-s3fs\fP   [0600]
 .RE
 .PP
-s3fs also recognizes the \fBAWSACCESSKEYID\fP and \fBAWSSECRETACCESSKEY\fP environment variables.
+s3fs also recognizes the \fBAWS_ACCESS_KEY_ID\fP and \fBAWS_SECRET_ACCESS_KEY\fP environment variables.
 .SH OPTIONS
 .SS "general options"
 .TP
@@ -54,7 +54,7 @@ print version
 FUSE foreground option - do not run as daemon.
 .TP
 \fB\-s\fR
-FUSE singlethreaded option (disables multi-threaded operation)
+FUSE single-threaded option (disables multi-threaded operation)
 .SS "mount options"
 .TP
 All s3fs options must given in the form where "opt" is:
@@ -65,11 +65,14 @@ if it is not specified bucket name (and path) in command line, must specify this
 .TP
 \fB\-o\fR default_acl (default="private")
 the default canned acl to apply to all written s3 objects, e.g., "private", "public-read".
-see https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl for the full list of canned acls.
+see https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl for the full list of canned ACLs.
 .TP
 \fB\-o\fR retries (default="5")
 number of times to retry a failed S3 transaction.
 .TP
+\fB\-o\fR tmpdir (default="/tmp")
+local folder for temporary files.
+.TP
 \fB\-o\fR use_cache (default="" which means disabled)
 local folder to use for local file cache.
 .TP
@@ -82,8 +85,7 @@ delete local file cache when s3fs starts and exits.
 .TP
 \fB\-o\fR storage_class (default="standard")
 store object with specified storage class.
-this option replaces the old option use_rrs.
-Possible values: standard, standard_ia, onezone_ia, reduced_redundancy, and intelligent_tiering.
+Possible values: standard, standard_ia, onezone_ia, reduced_redundancy, intelligent_tiering, glacier, glacier_ir, and deep_archive.
 .TP
 \fB\-o\fR use_rrs (default is disable)
 use Amazon's Reduced Redundancy Storage.
@@ -108,6 +110,7 @@ You can use "k" for short "kmsid".
 If you san specify SSE-KMS type with your <kms id> in AWS KMS, you can set it after "kmsid:" (or "k:").
 If you specify only "kmsid" ("k"), you need to set AWSSSEKMSID environment which value is <kms id>.
 You must be careful about that you can not use the KMS id which is not same EC2 region.
+Additionally, if you specify SSE-KMS, your endpoints must use Secure Sockets Layer(SSL) or Transport Layer Security(TLS).
 .TP
 \fB\-o\fR load_sse_c - specify SSE-C keys
 Specify the custom-provided encryption keys file path for decrypting at downloading.
@@ -158,38 +161,48 @@ specify the maximum number of keys returned by S3 list object API. The default i
 \fB\-o\fR max_stat_cache_size (default="100,000" entries (about 40MB))
 maximum number of entries in the stat cache and symbolic link cache.
 .TP
-\fB\-o\fR stat_cache_expire (default is no expire)
+\fB\-o\fR stat_cache_expire (default is 900)
 specify expire time (seconds) for entries in the stat cache and symbolic link cache. This expire time indicates the time since cached.
 .TP
-\fB\-o\fR stat_cache_interval_expire (default is no expire)
+\fB\-o\fR stat_cache_interval_expire (default is 900)
 specify expire time (seconds) for entries in the stat cache and symbolic link cache. This expire time is based on the time from the last access time of those cache.
 This option is exclusive with stat_cache_expire, and is left for compatibility with older versions.
 .TP
-\fB\-o\fR enable_noobj_cache (default is disable)
-enable cache entries for the object which does not exist.
-s3fs always has to check whether file (or sub directory) exists under object (path) when s3fs does some command, since s3fs has recognized a directory which does not exist and has files or sub directories under itself.
-It increases ListBucket request and makes performance bad.
-You can specify this option for performance, s3fs memorizes in stat cache that the object (file or directory) does not exist.
+\fB\-o\fR disable_noobj_cache (default is enable)
+By default s3fs memorizes when an object does not exist up until the stat cache timeout.
+This caching can cause staleness for applications.
+If disabled, s3fs will not memorize objects and may cause extra HeadObject requests and reduce performance.
 .TP
 \fB\-o\fR no_check_certificate (by default this option is disabled)
-do not check ssl certificate.
 server certificate won't be checked against the available certificate authorities.
 .TP
 \fB\-o\fR ssl_verify_hostname (default="2")
 When 0, do not verify the SSL certificate against the hostname.
 .TP
-\fB\-o\fR nodnscache - disable dns cache.
-s3fs is always using dns cache, this option make dns cache disable.
+\fB\-o\fR ssl_client_cert (default="")
+Specify an SSL client certificate.
+Specify this optional parameter in the following format:
+ "<SSL Cert>[:<Cert Type>[:<Private Key>[:<Key Type>
+                                        [:<Password>]]]]"
+ <SSL Cert>: Client certificate.
+             Specify the file path or NickName(for NSS, etc.).
+ <Cert Type>: Type of certificate, default is "PEM"(optional).
+ <Private Key>: Certificate's private key file(optional).
+ <Key Type>: Type of private key, default is "PEM"(optional).
+ <Password>: Passphrase of the private key(optional). It is also possible to omit this value and specify it using the environment variable "S3FS_SSL_PRIVKEY_PASSWORD".
 .TP
-\fB\-o\fR nosscache - disable ssl session cache.
-s3fs is always using ssl session cache, this option make ssl session cache disable.
+\fB\-o\fR nodnscache - disable DNS cache.
+s3fs is always using DNS cache, this option make DNS cache disable.
+.TP
+\fB\-o\fR nosscache - disable SSL session cache.
+s3fs is always using SSL session cache, this option make SSL session cache disable.
 .TP
 \fB\-o\fR multireq_max (default="20")
 maximum number of parallel request for listing objects.
 .TP
 \fB\-o\fR parallel_count (default="5")
 number of parallel request for uploading big objects.
-s3fs uploads large object (over 20MB) by multipart post request, and sends parallel requests.
+s3fs uploads large object (over 25MB by default) by multipart post request, and sends parallel requests.
 This option limits parallel request count which s3fs requests at once.
 It is necessary to set this value depending on a CPU and a network band.
 .TP
@@ -197,10 +210,45 @@ It is necessary to set this value depending on a CPU and a network band.
 part size, in MB, for each multipart request.
 The minimum value is 5 MB and the maximum value is 5 GB.
 .TP
+\fB\-o\fR multipart_copy_size (default="512")
+part size, in MB, for each multipart copy request, used for
+renames and mixupload.
+The minimum value is 5 MB and the maximum value is 5 GB.
+Must be at least 512 MB to copy the maximum 5 TB object size
+but lower values may improve performance.
+.TP
+\fB\-o\fR max_dirty_data (default="5120")
+Flush dirty data to S3 after a certain number of MB written.
+The minimum value is 50 MB. -1 value means disable.
+Cannot be used with nomixupload.
+.TP
+\fB\-o\fR bucket_size (default=maximum long unsigned integer value)
+The size of the bucket with which the corresponding
+elements of the statvfs structure will be filled. The option
+argument is an integer optionally followed by a
+multiplicative suffix (GB, GiB, TB, TiB, PB, PiB,
+EB, EiB) (no spaces in between). If no suffix is supplied,
+bytes are assumed; eg: 20000000, 30GB, 45TiB. Note that
+s3fs does not compute the actual volume size (too
+expensive): by default it will assume the maximum possible
+size; however, since this may confuse other software which
+uses s3fs, the advertised bucket size can be set with this
+option.
+.TP
 \fB\-o\fR ensure_diskfree (default 0)
 sets MB to ensure disk free space. This option means the threshold of free space size on disk which is used for the cache file by s3fs.
 s3fs makes file for downloading, uploading and caching files.
-If the disk free space is smaller than this value, s3fs do not use diskspace as possible in exchange for the performance.
+If the disk free space is smaller than this value, s3fs do not use disk space as possible in exchange for the performance.
+.TP
+\fB\-o\fR free_space_ratio (default="10")
+sets min free space ratio of the disk. The value of this option can be between 0 and 100. It will control
+the size of the cache according to this ratio to ensure that the idle ratio of the disk is greater than this value.
+For example, when the disk space is 50GB, the default value will
+ensure that the disk will reserve at least 50GB * 10%% = 5GB of remaining space.
+.TP
+\fB\-o\fR multipart_threshold (default="25")
+threshold, in MB, to use multipart upload instead of
+single-part. Must be at least 5 MB.
 .TP
 \fB\-o\fR singlepart_copy_limit (default="512")
 maximum size, in MB, of a single-part copy before trying
@@ -209,7 +257,7 @@ multipart copy.
 \fB\-o\fR host (default="https://s3.amazonaws.com")
 Set a non-Amazon host, e.g., https://example.com.
 .TP
-\fB\-o\fR sevicepath (default="/")
+\fB\-o\fR servicepath (default="/")
 Set a service path when the non-Amazon host requires a prefix.
 .TP
 \fB\-o\fR url (default="https://s3.amazonaws.com")
@@ -223,8 +271,11 @@ If the s3fs could not connect to the region specified by this option, s3fs could
 But if you do not specify this option, and if you can not connect with the default region, s3fs will retry to automatically connect to the other region.
 So s3fs can know the correct region name, because s3fs can find it in an error from the S3 server.
 .TP
-\fB\-o\fR sigv2 (default is signature version 4)
-sets signing AWS requests by using Signature Version 2.
+\fB\-o\fR sigv2 (default is signature version 4 falling back to version 2)
+sets signing AWS requests by using only signature version 2.
+.TP
+\fB\-o\fR sigv4 (default is signature version 4 falling back to version 2)
+sets signing AWS requests by using only signature version 4.
 .TP
 \fB\-o\fR mp_umask (default is "0000")
 sets umask for the mount point directory.
@@ -233,28 +284,58 @@ In the opposite case s3fs allows access to all users as the default.
 But if you set the allow_other with this option, you can control the permissions of the mount point by this option like umask.
 .TP
 \fB\-o\fR umask (default is "0000")
-sets umask for files under the mountpoint.  This can allow
+sets umask for files under the mountpoint. This can allow
 users other than the mounting user to read and write to files
 that they did not create.
 .TP
 \fB\-o\fR nomultipart - disable multipart uploads
 .TP
+\fB\-o\fR streamupload (default is disable)
+Enable stream upload.
+If this option is enabled, a sequential upload will be performed in parallel with the write from the part that has been written during a multipart upload.
+This is expected to give better performance than other upload functions.
+Note that this option is still experimental and may change in the future.
+.TP
+\fB\-o\fR max_thread_count (default is "5")
+Specifies the number of threads waiting for stream uploads.
+Note that this option and Stream Upload are still experimental and subject to change in the future.
+This option will be merged with "parallel_count" in the future.
+.TP
 \fB\-o\fR enable_content_md5 (default is disable)
 Allow S3 server to check data integrity of uploads via the Content-MD5 header.
 This can add CPU overhead to transfers.
 .TP
+\fB\-o\fR enable_unsigned_payload (default is disable)
+Do not calculate Content-SHA256 for PutObject and UploadPart
+payloads. This can reduce CPU overhead to transfers.
+.TP
 \fB\-o\fR ecs (default is disable)
 This option instructs s3fs to query the ECS container credential metadata address instead of the instance metadata address.
 .TP
 \fB\-o\fR iam_role (default is no IAM role)
 This option requires the IAM role name or "auto". If you specify "auto", s3fs will automatically use the IAM role names that are set to an instance. If you specify this option without any argument, it is the same as that you have specified the "auto".
 .TP
+\fB\-o\fR imdsv1only (default is to use IMDSv2 with fallback to v1)
+AWS instance metadata service, used with IAM role authentication,
+supports the use of an API token. If you're using an IAM role in an
+environment that does not support IMDSv2, setting this flag will skip
+retrieval and usage of the API token when retrieving IAM credentials.
+.TP
 \fB\-o\fR ibm_iam_auth (default is not using IBM IAM authentication)
 This option instructs s3fs to use IBM IAM authentication. In this mode, the AWSAccessKey and AWSSecretKey will be used as IBM's Service-Instance-ID and APIKey, respectively.
 .TP
-\fB\-o\fR ibm_iam_endpoint (default is https://iam.bluemix.net)
+\fB\-o\fR ibm_iam_endpoint (default is https://iam.cloud.ibm.com)
 Sets the URL to use for IBM IAM authentication.
 .TP
+\fB\-o\fR credlib (default=\"\" which means disabled)
+Specifies the shared library that handles the credentials containing the authentication token.
+If this option is specified, the specified credential and token processing provided by the shared library ant will be performed instead of the built-in credential processing.
+This option cannot be specified with passwd_file, profile, use_session_token, ecs, ibm_iam_auth, ibm_iam_endpoint, imdsv1only and iam_role option.
+.TP
+\fB\-o\fR credlib_opts (default=\"\" which means disabled)
+Specifies the options to pass when the shared library specified in credlib is loaded and then initialized.
+For the string specified in this option, specify the string defined by the shared library.
+.TP
 \fB\-o\fR use_xattr (default is not handling the extended attribute)
 Enable to handle the extended attribute (xattrs).
 If you set this option, you can use the extended attribute.
@@ -282,6 +363,10 @@ If this option is specified with nocopyapi, then s3fs ignores it.
 \fB\-o\fR use_path_request_style (use legacy API calling style)
 Enable compatibility with S3-like APIs which do not support the virtual-host request style, by using the older path request style.
 .TP
+\fB\-o\fR listobjectsv2 (use ListObjectsV2)
+Issue ListObjectsV2 instead of ListObjects, useful on object
+stores without ListObjects support.
+.TP
 \fB\-o\fR noua (suppress User-Agent header)
 Usually s3fs outputs of the User-Agent in "s3fs/<version> (commit hash <hash>; <using ssl library name>)" format.
 If this option is specified, s3fs suppresses the output of the User-Agent.
@@ -299,40 +384,88 @@ This name will be added to logging messages and user agent headers sent by s3fs.
 s3fs complements lack of information about file/directory mode if a file or a directory object does not have x-amz-meta-mode header.
 As default, s3fs does not complements stat information for a object, then the object will not be able to be allowed to list/modify.
 .TP
-\fB\-o\fR notsup_compat_dir (not support compatibility directory types)
-As a default, s3fs supports objects of the directory type as much as possible and recognizes them as directories.
-Objects that can be recognized as directory objects are "dir/", "dir", "dir_$folder$", and there is a file object that does not have a directory object but contains that directory path.
-s3fs needs redundant communication to support all these directory types.
-The object as the directory created by s3fs is "dir/".
-By restricting s3fs to recognize only "dir/" as a directory, communication traffic can be reduced.
-This option is used to give this restriction to s3fs.
-However, if there is a directory object other than "dir/" in the bucket, specifying this option is not recommended.
-s3fs may not be able to recognize the object correctly if an object created by s3fs exists in the bucket.
-Please use this option when the directory in the bucket is only "dir/" object.
+\fB\-o\fR compat_dir (enable support of alternative directory names)
+.RS
+s3fs supports two different naming schemas "dir/" and "dir" to map directory names to S3 objects and vice versa by default. As a third variant, directories can be determined indirectly if there is a file object with a path (e.g. "/dir/file") but without the parent directory.  This option enables a fourth variant, "dir_$folder$", created by older applications.
+.TP
+S3fs uses only the first schema "dir/" to create S3 objects for directories.
+.TP
+The support for these different naming schemas causes an increased communication effort.
+.TP
+If you do not have access permissions to the bucket and specify a directory path created by a client other than s3fs for the mount point, you cannot start because the mount point directory cannot be found by s3fs. But by specifying this option, you can avoid this error.
+.RE
 .TP
 \fB\-o\fR use_wtf8 - support arbitrary file system encoding.
-S3 requires all object names to be valid utf-8. But some
+S3 requires all object names to be valid UTF-8. But some
 clients, notably Windows NFS clients, use their own encoding.
-This option re-encodes invalid utf-8 object names into valid
-utf-8 by mapping offending codes into a 'private' codepage of the
+This option re-encodes invalid UTF-8 object names into valid
+UTF-8 by mapping offending codes into a 'private' codepage of the
 Unicode set.
-Useful on clients not using utf-8 as their file system encoding.
+Useful on clients not using UTF-8 as their file system encoding.
 .TP
 \fB\-o\fR use_session_token - indicate that session token should be provided.
 If credentials are provided by environment variables this switch
-forces presence check of AWSSESSIONTOKEN variable.
+forces presence check of AWS_SESSION_TOKEN variable.
 Otherwise an error is returned.
 .TP
 \fB\-o\fR requester_pays (default is disable)
 This option instructs s3fs to enable requests involving Requester Pays buckets (It includes the 'x-amz-request-payer=requester' entry in the request header).
 .TP
+\fB\-o\fR mime (default is "/etc/mime.types")
+Specify the path of the mime.types file.
+If this option is not specified, the existence of "/etc/mime.types" is checked, and that file is loaded as mime information.
+If this file does not exist on macOS, then "/etc/apache2/mime.types" is checked as well.
+.TP
+\fB\-o\fR proxy (default="")
+This option specifies a proxy to S3 server.
+Specify the proxy with '[<scheme://]hostname(fqdn)[:<port>]' formatted.
+'<schema>://' can be omitted, and 'http://' is used when omitted.
+Also, ':<port>' can also be omitted. If omitted, port 443 is used for HTTPS schema, and port 1080 is used otherwise.
+This option is the same as the curl command's '--proxy(-x)' option and libcurl's 'CURLOPT_PROXY' flag.
+This option is equivalent to and takes precedence over the environment variables 'http_proxy', 'all_proxy', etc.
+.TP
+\fB\-o\fR proxy_cred_file (default="")
+This option specifies the file that describes the username and passphrase for authentication of the proxy when the HTTP schema proxy is specified by the 'proxy' option.
+Username and passphrase are valid only for HTTP schema.
+If the HTTP proxy does not require authentication, this option is not required.
+Separate the username and passphrase with a ':' character and specify each as a URL-encoded string.
+.TP
+\fB\-o\fR ipresolve (default="whatever")
+Select what type of IP addresses to use when establishing a connection.
+Default('whatever') can use addresses of all IP versions(IPv4 and IPv6) that your system allows.
+If you specify 'IPv4', only IPv4 addresses are used.
+And when 'IPv6' is specified, only IPv6 addresses will be used.
+.TP
+\fB\-o\fR logfile - specify the log output file.
+s3fs outputs the log file to syslog. Alternatively, if s3fs is started with the "-f" option specified, the log will be output to the stdout/stderr.
+You can use this option to specify the log file that s3fs outputs.
+If you specify a log file with this option, it will reopen the log file when s3fs receives a SIGHUP signal. You can use the SIGHUP signal for log rotation.
+.TP
 \fB\-o\fR dbglevel (default="crit")
 Set the debug message level. set value as crit (critical), err (error), warn (warning), info (information) to debug level. default debug level is critical.
 If s3fs run with "-d" option, the debug level is set information.
-When s3fs catch the signal SIGUSR2, the debug level is bumpup.
+When s3fs catch the signal SIGUSR2, the debug level is bump up.
 .TP
 \fB\-o\fR curldbg - put curl debug message
 Put the debug message from libcurl when this option is specified.
+Specify "normal" or "body" for the parameter.
+If the parameter is omitted, it is the same as "normal".
+If "body" is specified, some API communication body data will be output in addition to the debug message output as "normal".
+.TP
+\fB\-o\fR no_time_stamp_msg - no time stamp in debug message
+The time stamp is output to the debug message by default.
+If this option is specified, the time stamp will not be output in the debug message.
+It is the same even if the environment variable "S3FS_MSGTIMESTAMP" is set to "no".
+.TP
+\fB\-o\fR set_check_cache_sigusr1 (default is stdout)
+If the cache is enabled, you can check the integrity of the cache file and the cache file's stats info file.
+This option is specified and when sending the SIGUSR1 signal to the s3fs process checks the cache status at that time.
+This option can take a file path as parameter to output the check result to that file.
+The file path parameter can be omitted. If omitted, the result will be output to stdout or syslog.
+.TP
+\fB\-o\fR update_parent_dir_stat (default is disable)
+The parent directory's mtime and ctime are updated when a file or directory is created or deleted (when the parent directory's inode is updated).
+By default, parent directory statistics are not updated.
 .SS "utility mode options"
 .TP
 \fB\-u\fR or \fB\-\-incomplete\-mpu\-list\fR
@@ -347,19 +480,74 @@ It can be specified as year, month, day, hour, minute, second, and it is express
 For example, "1Y6M10D12h30m30s".
 .SH FUSE/MOUNT OPTIONS
 .TP
-Most of the generic mount options described in 'man mount' are supported (ro, rw, suid, nosuid, dev, nodev, exec, noexec, atime, noatime, sync async, dirsync).  Filesystems are mounted with '\-onodev,nosuid' by default, which can only be overridden by a privileged user.
+Most of the generic mount options described in 'man mount' are supported (ro, rw, suid, nosuid, dev, nodev, exec, noexec, atime, noatime, sync, async, dirsync). Filesystems are mounted with '\-onodev,nosuid' by default, which can only be overridden by a privileged user.
 .TP
 There are many FUSE specific mount options that can be specified. e.g. allow_other. See the FUSE README for the full set.
+.SH SERVER URL/REQUEST STYLE
+Be careful when specifying the server endpoint(URL).
+.TP
+If your bucket name contains dots("."), you should use the path request style(using "use_path_request_style" option).
+.TP
+Also, if you are using a server other than Amazon S3, you need to specify the endpoint with the "url" option. At that time, depending on the server you are using, you may have to specify the path request style("use_path_request_style" option).
+.SH LOCAL STORAGE CONSUMPTION
+.TP
+s3fs requires local caching for operation. You can enable a local cache with "\-o use_cache" or s3fs uses temporary files to cache pending requests to s3.
+.TP
+Apart from the requirements discussed below, it is recommended to keep enough cache resp. temporary storage to allow one copy each of all files open for reading and writing at any one time.
+.TP
+.SS Local cache with \[dq]\-o use_cache\[dq]
+.TP
+s3fs automatically maintains a local cache of files. The cache folder is specified by the parameter of "\-o use_cache". It is only a local cache that can be deleted at any time. s3fs rebuilds it if necessary.
+.TP
+Whenever s3fs needs to read or write a file on S3, it first creates the file in the cache directory and operates on it.
+.TP
+The amount of local cache storage used can be indirectly controlled  with "\-o ensure_diskfree".
+.TP
+.SS Without local cache
+.TP
+Since s3fs always requires some storage space for operation, it creates temporary files to store incoming write requests until the required s3 request size is reached and the segment has been uploaded. After that, this data is truncated in the temporary file to free up storage space.
+.TP
+Per file you need at least twice the part size (default 5MB or "-o multipart_size") for writing multipart requests or space for the whole file if single requests are enabled ("\-o nomultipart").
+.SH PERFORMANCE CONSIDERATIONS
+.TP
+This section discusses settings to improve s3fs performance.
+.TP
+In most cases, backend performance cannot be controlled and is therefore not part of this discussion.
+.TP
+Details of the local storage usage is discussed in "LOCAL STORAGE CONSUMPTION".
+.TP
+.SS CPU and Memory Consumption
+.TP
+s3fs is a multi-threaded application. Depending on the workload it may use multiple CPUs and a certain amount of memory. You can monitor the CPU and memory consumption with the "top" utility.
+.TP
+.SS Performance of S3 requests
+.TP
+s3fs provides several options (e.g. "\-o multipart_size", "\-o parallel_count") to control behaviour and thus indirectly the performance. The possible combinations of these options in conjunction with the various S3 backends are so varied that there is no individual recommendation other than the default values. Improved individual settings can be found by testing and measuring.
+.TP
+The two options "Enable no object cache" ("\-o enable_noobj_cache") and "Disable support of alternative directory names" ("\-o notsup_compat_dir") can be used to control shared access to the same bucket by different applications:
+.TP
+.IP \[bu]
+Enable no object cache ("\-o enable_noobj_cache")
+.RS
+.TP
+If a bucket is used exclusively by an s3fs instance, you can enable the cache for non-existent files and directories with "\-o enable_noobj_cache". This eliminates repeated requests to check the existence of an object, saving time and possibly money.
+.RE
+.IP \[bu]
+Enable support of alternative directory names ("\-o compat_dir")
+.RS
+.TP
+s3fs recognizes "dir/" objects as directories. Clients other than s3fs may use "dir", "dir_$folder$" objects as directories, or directory objects may not exist. In order for s3fs to recognize these as directories, you can specify the "compat_dir" option.
+.RE
+.IP \[bu]
+Completion of file and directory information ("\-o complement_stat")
+.RS
+.TP
+s3fs uses the "x-amz-meta-mode header" to determine if an object is a file or a directory. For this reason, objects that do not have the "x-amz-meta-mode header" may not produce the expected results(The directory cannot be displayed, etc.). By specifying the "complement_stat" option, s3fs can automatically complete this missing attribute information, and you can get the expected results.
+.RE
 .SH NOTES
 .TP
 The maximum size of objects that s3fs can handle depends on Amazon S3. For example, up to 5 GB when using single PUT API. And up to 5 TB is supported when Multipart Upload API is used.
 .TP
-If enabled via the "use_cache" option, s3fs automatically maintains a local cache of files in the folder specified by use_cache. Whenever s3fs needs to read or write a file on S3, it first downloads the entire file locally to the folder specified by use_cache and operates on it. When fuse_release() is called, s3fs will re-upload the file to S3 if it has been changed. s3fs uses md5 checksums to minimize downloads from S3.
-.TP
-The folder specified by use_cache is just a local cache. It can be deleted at any time. s3fs rebuilds it on demand.
-.TP
-Local file caching works by calculating and comparing md5 checksums (ETag HTTP header).
-.TP
 s3fs leverages /etc/mime.types to "guess" the "correct" content-type based on file name extension. This means that you can copy a website to S3 and serve it up directly from S3 with correct content-types!
 .SH SEE ALSO
 fuse(8), mount(8), fusermount(1), fstab(5)

src/Makefile.am

@@ -21,35 +21,95 @@ bin_PROGRAMS=s3fs
 
 AM_CPPFLAGS = $(DEPS_CFLAGS)
 if USE_GNUTLS_NETTLE
-  AM_CPPFLAGS += -DUSE_GNUTLS_NETTLE
+    AM_CPPFLAGS += -DUSE_GNUTLS_NETTLE
+endif
+if USE_SSL_OPENSSL_30
+    AM_CPPFLAGS += -DUSE_OPENSSL_30
 endif
 
 s3fs_SOURCES = \
-  s3fs.cpp \
-  curl.cpp \
-  cache.cpp \
-  string_util.cpp \
-  s3fs_util.cpp \
-  fdcache.cpp \
-  common_auth.cpp \
-  addhead.cpp
+    s3fs.cpp \
+    s3fs_global.cpp \
+    s3fs_help.cpp \
+    s3fs_logger.cpp \
+    s3fs_xml.cpp \
+    metaheader.cpp \
+    mpu_util.cpp \
+    curl.cpp \
+    curl_handlerpool.cpp \
+    curl_multi.cpp \
+    curl_util.cpp \
+    s3objlist.cpp \
+    cache.cpp \
+    string_util.cpp \
+    s3fs_cred.cpp \
+    s3fs_util.cpp \
+    fdcache.cpp \
+    fdcache_entity.cpp \
+    fdcache_page.cpp \
+    fdcache_stat.cpp \
+    fdcache_auto.cpp \
+    fdcache_fdinfo.cpp \
+    fdcache_pseudofd.cpp \
+    fdcache_untreated.cpp \
+    addhead.cpp \
+    sighandlers.cpp \
+    threadpoolman.cpp \
+    common_auth.cpp
 if USE_SSL_OPENSSL
-  s3fs_SOURCES += openssl_auth.cpp
+    s3fs_SOURCES += openssl_auth.cpp
 endif
 if USE_SSL_GNUTLS
-  s3fs_SOURCES += gnutls_auth.cpp
+    s3fs_SOURCES += gnutls_auth.cpp
 endif
 if USE_SSL_NSS
-  s3fs_SOURCES += nss_auth.cpp
+    s3fs_SOURCES += nss_auth.cpp
 endif
 
 s3fs_LDADD = $(DEPS_LIBS)
 
-noinst_PROGRAMS = test_string_util
+noinst_PROGRAMS = \
+    test_curl_util \
+    test_page_list \
+    test_string_util
 
-test_string_util_SOURCES = string_util.cpp test_string_util.cpp
+test_curl_util_SOURCES = common_auth.cpp curl_util.cpp string_util.cpp test_curl_util.cpp s3fs_global.cpp s3fs_logger.cpp
+if USE_SSL_OPENSSL
+    test_curl_util_SOURCES += openssl_auth.cpp
+endif
+if USE_SSL_GNUTLS
+    test_curl_util_SOURCES += gnutls_auth.cpp
+endif
+if USE_SSL_NSS
+    test_curl_util_SOURCES += nss_auth.cpp
+endif
 
-TESTS = test_string_util
+test_curl_util_LDADD = $(DEPS_LIBS)
+
+test_page_list_SOURCES = \
+    fdcache_page.cpp \
+    s3fs_global.cpp \
+    s3fs_logger.cpp \
+    string_util.cpp \
+    test_page_list.cpp
+
+test_string_util_SOURCES = string_util.cpp test_string_util.cpp s3fs_logger.cpp
+
+TESTS = \
+    test_curl_util \
+    test_page_list \
+    test_string_util
 
 clang-tidy:
-	clang-tidy $(s3fs_SOURCES) -- $(DEPS_CFLAGS) $(CPPFLAGS)
+	clang-tidy -extra-arg-before=-xc++ \
+		*.h $(s3fs_SOURCES) test_curl_util.cpp test_page_list.cpp test_string_util.cpp \
+		-- $(DEPS_CFLAGS) $(CPPFLAGS)
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: noexpandtab sw=4 ts=4 fdm=marker
+# vim<600: noexpandtab sw=4 ts=4
+#

src/addhead.cpp

@@ -21,26 +21,22 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
-#include <syslog.h>
-#include <curl/curl.h>
 #include <sstream>
 #include <fstream>
 #include <string>
-#include <map>
-#include <list>
+#include <strings.h>
+#include <utility>
 #include <vector>
 
-#include "common.h"
-#include "addhead.h"
-#include "curl.h"
 #include "s3fs.h"
-
-using namespace std;
+#include "addhead.h"
+#include "curl_util.h"
+#include "s3fs_logger.h"
 
 //-------------------------------------------------------------------
 // Symbols
 //-------------------------------------------------------------------
-#define ADD_HEAD_REGEX              "reg:"
+static constexpr char ADD_HEAD_REGEX[] = "reg:";
 
 //-------------------------------------------------------------------
 // Class AdditionalHeader
@@ -52,229 +48,196 @@ AdditionalHeader AdditionalHeader::singleton;
 //-------------------------------------------------------------------
 AdditionalHeader::AdditionalHeader()
 {
-  if(this == AdditionalHeader::get()){
-    is_enable = false;
-  }else{
-    abort();
-  }
+    if(this == AdditionalHeader::get()){
+        is_enable = false;
+    }else{
+        abort();
+    }
 }
 
 AdditionalHeader::~AdditionalHeader()
 {
-  if(this == AdditionalHeader::get()){
-    Unload();
-  }else{
-    abort();
-  }
+    if(this == AdditionalHeader::get()){
+        Unload();
+    }else{
+        abort();
+    }
 }
 
 bool AdditionalHeader::Load(const char* file)
 {
-  if(!file){
-    S3FS_PRN_WARN("file is NULL.");
-    return false;
-  }
-  Unload();
+    if(!file){
+        S3FS_PRN_WARN("file is nullptr.");
+        return false;
+    }
+    Unload();
 
-  ifstream AH(file);
-  if(!AH.good()){
-    S3FS_PRN_WARN("Could not open file(%s).", file);
-    return false;
-  }
-
-  // read file
-  string   line;
-  ADDHEAD *paddhead;
-  while(getline(AH, line)){
-    if('#' == line[0]){
-      continue;
-    }
-    if(line.empty()){
-      continue;
-    }
-    // load a line
-    istringstream ss(line);
-    string        key;           // suffix(key)
-    string        head;          // additional HTTP header
-    string        value;         // header value
-    if(0 == isblank(line[0])){
-      ss >> key;
-    }
-    if(ss){
-      ss >> head;
-      if(ss && static_cast<size_t>(ss.tellg()) < line.size()){
-        value = line.substr(static_cast<int>(ss.tellg()) + 1);
-      }
+    std::ifstream AH(file);
+    if(!AH.good()){
+        S3FS_PRN_WARN("Could not open file(%s).", file);
+        return false;
     }
 
-    // check it
-    if(head.empty()){
-      if(key.empty()){
-        continue;
-      }
-      S3FS_PRN_ERR("file format error: %s key(suffix) is no HTTP header value.", key.c_str());
-      Unload();
-      return false;
+    // read file
+    std::string line;
+    while(getline(AH, line)){
+        if(line.empty()){
+            continue;
+        }
+        if('#' == line[0]){
+            continue;
+        }
+        // load a line
+        std::istringstream ss(line);
+        std::string        key;           // suffix(key)
+        std::string        head;          // additional HTTP header
+        std::string        value;         // header value
+        if(0 == isblank(line[0])){
+            ss >> key;
+        }
+        if(ss){
+            ss >> head;
+            if(ss && static_cast<size_t>(ss.tellg()) < line.size()){
+                value = line.substr(static_cast<int>(ss.tellg()) + 1);
+            }
+        }
+
+        // check it
+        if(head.empty()){
+            if(key.empty()){
+                continue;
+            }
+            S3FS_PRN_ERR("file format error: %s key(suffix) is no HTTP header value.", key.c_str());
+            Unload();
+            return false;
+        }
+
+        if(0 == strncasecmp(key.c_str(), ADD_HEAD_REGEX, strlen(ADD_HEAD_REGEX))){
+            // regex
+            if(key.size() <= strlen(ADD_HEAD_REGEX)){
+                S3FS_PRN_ERR("file format error: %s key(suffix) does not have key std::string.", key.c_str());
+                continue;
+            }
+            key.erase(0, strlen(ADD_HEAD_REGEX));
+
+            // compile
+            RegexPtr preg(new regex_t, regfree);
+            int       result;
+            if(0 != (result = regcomp(preg.get(), key.c_str(), REG_EXTENDED | REG_NOSUB))){ // we do not need matching info
+                char    errbuf[256];
+                regerror(result, preg.get(), errbuf, sizeof(errbuf));
+                S3FS_PRN_ERR("failed to compile regex from %s key by %s.", key.c_str(), errbuf);
+                continue;
+            }
+
+            addheadlist.emplace_back(std::move(preg), key, head, value);
+        }else{
+            // not regex, directly comparing
+            addheadlist.emplace_back(RegexPtr(nullptr, regfree), key, head, value);
+        }
+
+        // set flag
+        is_enable = true;
     }
-
-    paddhead = new ADDHEAD;
-    if(0 == strncasecmp(key.c_str(), ADD_HEAD_REGEX, strlen(ADD_HEAD_REGEX))){
-      // regex
-      if(key.size() <= strlen(ADD_HEAD_REGEX)){
-        S3FS_PRN_ERR("file format error: %s key(suffix) does not have key string.", key.c_str());
-        delete paddhead;
-        continue;
-      }
-      key = key.substr(strlen(ADD_HEAD_REGEX));
-
-      // compile
-      regex_t*  preg = new regex_t;
-      int       result;
-      if(0 != (result = regcomp(preg, key.c_str(), REG_EXTENDED | REG_NOSUB))){ // we do not need matching info
-        char    errbuf[256];
-        regerror(result, preg, errbuf, sizeof(errbuf));
-        S3FS_PRN_ERR("failed to compile regex from %s key by %s.", key.c_str(), errbuf);
-        delete preg;
-        delete paddhead;
-        continue;
-      }
-
-      // set
-      paddhead->pregex     = preg;
-      paddhead->basestring = key;
-      paddhead->headkey    = head;
-      paddhead->headvalue  = value;
-
-    }else{
-      // not regex, directly comparing
-      paddhead->pregex     = NULL;
-      paddhead->basestring = key;
-      paddhead->headkey    = head;
-      paddhead->headvalue  = value;
-    }
-
-    // add list
-    addheadlist.push_back(paddhead);
-
-    // set flag
-    if(!is_enable){
-      is_enable = true;
-    }
-  }
-  return true;
+    return true;
 }
 
 void AdditionalHeader::Unload()
 {
-  is_enable = false;
+    is_enable = false;
 
-  for(addheadlist_t::iterator iter = addheadlist.begin(); iter != addheadlist.end(); ++iter){
-    ADDHEAD *paddhead = *iter;
-    if(paddhead){
-      if(paddhead->pregex){
-        regfree(paddhead->pregex);
-        delete paddhead->pregex;
-      }
-      delete paddhead;
-    }
-  }
-  addheadlist.clear();
+    addheadlist.clear();
 }
 
 bool AdditionalHeader::AddHeader(headers_t& meta, const char* path) const
 {
-  if(!is_enable){
-    return true;
-  }
-  if(!path){
-    S3FS_PRN_WARN("path is NULL.");
-    return false;
-  }
-
-  size_t pathlength = strlen(path);
-
-  // loop
-  //
-  // [NOTE]
-  // Because to allow duplicate key, and then scanning the entire table.
-  //
-  for(addheadlist_t::const_iterator iter = addheadlist.begin(); iter != addheadlist.end(); ++iter){
-    const ADDHEAD *paddhead = *iter;
-    if(!paddhead){
-      continue;
+    if(!is_enable){
+        return true;
+    }
+    if(!path){
+        S3FS_PRN_WARN("path is nullptr.");
+        return false;
     }
 
-    if(paddhead->pregex){
-      // regex
-      regmatch_t match;         // not use
-      if(0 == regexec(paddhead->pregex, path, 1, &match, 0)){
-        // match -> adding header
-        meta[paddhead->headkey] = paddhead->headvalue;
-      }
-    }else{
-      // directly comparing
-      if(paddhead->basestring.length() < pathlength){
-        if(0 == paddhead->basestring.length() || 0 == strcmp(&path[pathlength - paddhead->basestring.length()], paddhead->basestring.c_str())){
-          // match -> adding header
-          meta[paddhead->headkey] = paddhead->headvalue;
+    size_t pathlength = strlen(path);
+
+    // loop
+    //
+    // [NOTE]
+    // Because to allow duplicate key, and then scanning the entire table.
+    //
+    for(auto iter = addheadlist.cbegin(); iter != addheadlist.cend(); ++iter){
+        const add_header *paddhead = &*iter;
+
+        if(paddhead->pregex){
+            // regex
+            regmatch_t match;         // not use
+            if(0 == regexec(paddhead->pregex.get(), path, 1, &match, 0)){
+                // match -> adding header
+                meta[paddhead->headkey] = paddhead->headvalue;
+            }
+        }else{
+            // directly comparing
+            if(paddhead->basestring.length() < pathlength){
+                if(paddhead->basestring.empty() || paddhead->basestring == &path[pathlength - paddhead->basestring.length()]){
+                    // match -> adding header
+                    meta[paddhead->headkey] = paddhead->headvalue;
+                }
+            }
         }
-      }
     }
-  }
-  return true;
+    return true;
 }
 
 struct curl_slist* AdditionalHeader::AddHeader(struct curl_slist* list, const char* path) const
 {
-  headers_t meta;
+    headers_t meta;
 
-  if(!AddHeader(meta, path)){
+    if(!AddHeader(meta, path)){
+        return list;
+    }
+    for(auto iter = meta.cbegin(); iter != meta.cend(); ++iter){
+        // Adding header
+        list = curl_slist_sort_insert(list, iter->first.c_str(), iter->second.c_str());
+    }
+    meta.clear();
+    S3FS_MALLOCTRIM(0);
     return list;
-  }
-  for(headers_t::iterator iter = meta.begin(); iter != meta.end(); ++iter){
-    // Adding header
-    list = curl_slist_sort_insert(list, iter->first.c_str(), iter->second.c_str());
-  }
-  meta.clear();
-  S3FS_MALLOCTRIM(0);
-  return list;
 }
 
 bool AdditionalHeader::Dump() const
 {
-  if(!IS_S3FS_LOG_DBG()){
-    return true;
-  }
-
-  ostringstream ssdbg;
-  int           cnt = 1;
-
-  ssdbg << "Additional Header list[" << addheadlist.size() << "] = {" << endl;
-
-  for(addheadlist_t::const_iterator iter = addheadlist.begin(); iter != addheadlist.end(); ++iter, ++cnt){
-    const ADDHEAD *paddhead = *iter;
-
-    ssdbg << "    [" << cnt << "] = {" << endl;
-
-    if(paddhead){
-      if(paddhead->pregex){
-        ssdbg << "        type\t\t--->\tregex" << endl;
-      }else{
-        ssdbg << "        type\t\t--->\tsuffix matching" << endl;
-      }
-      ssdbg << "        base string\t--->\t" << paddhead->basestring << endl;
-      ssdbg << "        add header\t--->\t"  << paddhead->headkey << ": " << paddhead->headvalue << endl;
+    if(!S3fsLog::IsS3fsLogDbg()){
+        return true;
+    }
+
+    std::ostringstream ssdbg;
+    int cnt = 1;
+
+    ssdbg << "Additional Header list[" << addheadlist.size() << "] = {" << std::endl;
+
+    for(auto iter = addheadlist.cbegin(); iter != addheadlist.cend(); ++iter, ++cnt){
+        const add_header *paddhead = &*iter;
+
+        ssdbg << "    [" << cnt << "] = {" << std::endl;
+
+        if(paddhead->pregex){
+            ssdbg << "        type\t\t--->\tregex" << std::endl;
+        }else{
+            ssdbg << "        type\t\t--->\tsuffix matching" << std::endl;
+        }
+        ssdbg << "        base std::string\t--->\t" << paddhead->basestring << std::endl;
+        ssdbg << "        add header\t--->\t"  << paddhead->headkey << ": " << paddhead->headvalue << std::endl;
+        ssdbg << "    }" << std::endl;
     }
-    ssdbg << "    }" << endl;
-  }
 
 
-  ssdbg << "}" << endl;
+    ssdbg << "}" << std::endl;
 
-  // print all
-  S3FS_PRN_DBG("%s", ssdbg.str().c_str());
+    // print all
+    S3FS_PRN_DBG("%s", ssdbg.str().c_str());
 
-  return true;
+    return true;
 }
 
 /*
@@ -282,6 +245,6 @@ bool AdditionalHeader::Dump() const
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/addhead.h

@@ -21,41 +21,69 @@
 #ifndef S3FS_ADDHEAD_H_
 #define S3FS_ADDHEAD_H_
 
+#include <memory>
 #include <regex.h>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "metaheader.h"
 
 //----------------------------------------------
-// class AdditionalHeader
+// Structure / Typedef
 //----------------------------------------------
-typedef struct add_header{
-  regex_t*      pregex;         // not NULL means using regex, NULL means comparing suffix directly.
-  std::string   basestring;
-  std::string   headkey;
-  std::string   headvalue;
-}ADDHEAD;
+typedef std::unique_ptr<regex_t, decltype(&regfree)> RegexPtr;
 
-typedef std::vector<ADDHEAD *> addheadlist_t;
+struct add_header{
+    add_header(RegexPtr pregex, std::string basestring, std::string headkey, std::string headvalue)
+        : pregex(std::move(pregex))
+        , basestring(std::move(basestring))
+        , headkey(std::move(headkey))
+        , headvalue(std::move(headvalue))
+    {}
 
+    add_header(const add_header&) = delete;
+    add_header(add_header&& val) = default;
+    add_header& operator=(const add_header&) = delete;
+    add_header& operator=(add_header&&) = delete;
+
+    RegexPtr      pregex;         // not nullptr means using regex, nullptr means comparing suffix directly.
+    std::string   basestring;
+    std::string   headkey;
+    std::string   headvalue;
+};
+
+typedef std::vector<add_header> addheadlist_t;
+
+//----------------------------------------------
+// Class AdditionalHeader
+//----------------------------------------------
 class AdditionalHeader
 {
-  private:
-    static AdditionalHeader singleton;
-    bool                    is_enable;
-    addheadlist_t           addheadlist;
+    private:
+        static AdditionalHeader singleton;
+        bool                    is_enable;
+        addheadlist_t           addheadlist;
 
-  protected:
-    AdditionalHeader();
-    ~AdditionalHeader();
+    protected:
+        AdditionalHeader();
+        ~AdditionalHeader();
 
-  public:
-    // Reference singleton
-    static AdditionalHeader* get(void) { return &singleton; }
+    public:
+        AdditionalHeader(const AdditionalHeader&) = delete;
+        AdditionalHeader(AdditionalHeader&&) = delete;
+        AdditionalHeader& operator=(const AdditionalHeader&) = delete;
+        AdditionalHeader& operator=(AdditionalHeader&&) = delete;
 
-    bool Load(const char* file);
-    void Unload(void);
+        // Reference singleton
+        static AdditionalHeader* get() { return &singleton; }
 
-    bool AddHeader(headers_t& meta, const char* path) const;
-    struct curl_slist* AddHeader(struct curl_slist* list, const char* path) const;
-    bool Dump(void) const;
+        bool Load(const char* file);
+        void Unload();
+
+        bool AddHeader(headers_t& meta, const char* path) const;
+        struct curl_slist* AddHeader(struct curl_slist* list, const char* path) const;
+        bool Dump() const;
 };
 
 #endif // S3FS_ADDHEAD_H_
@@ -65,6 +93,6 @@ class AdditionalHeader
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/cache.h

@@ -21,49 +21,54 @@
 #ifndef S3FS_CACHE_H_
 #define S3FS_CACHE_H_
 
-#include "common.h"
+#include <cstring>
+#include <map>
+#include <mutex>
+#include <string>
+#include <sys/stat.h>
+#include <vector>
 
+#include "common.h"
+#include "metaheader.h"
+
+//-------------------------------------------------------------------
+// Structure
+//-------------------------------------------------------------------
 //
 // Struct for stats cache
 //
 struct stat_cache_entry {
-  struct stat       stbuf;
-  unsigned long     hit_count;
-  struct timespec   cache_date;
-  headers_t         meta;
-  bool              isforce;
-  bool              noobjcache;  // Flag: cache is no object for no listing.
-  unsigned long     notruncate;  // 0<:   not remove automatically at checking truncate
-
-  stat_cache_entry() : hit_count(0), isforce(false), noobjcache(false), notruncate(0L) {
-    memset(&stbuf, 0, sizeof(struct stat));
-    cache_date.tv_sec  = 0;
-    cache_date.tv_nsec = 0;
-    meta.clear();
-  }
+    struct stat       stbuf = {};
+    unsigned long     hit_count = 0;
+    struct timespec   cache_date = {0, 0};
+    headers_t         meta;
+    bool              isforce = false;
+    bool              noobjcache = false;  // Flag: cache is no object for no listing.
+    unsigned long     notruncate = 0L;  // 0<:   not remove automatically at checking truncate
 };
 
-typedef std::map<std::string, stat_cache_entry*> stat_cache_t; // key=path
+typedef std::map<std::string, stat_cache_entry> stat_cache_t; // key=path
 
 //
 // Struct for symbolic link cache
 //
 struct symlink_cache_entry {
-  std::string       link;
-  unsigned long     hit_count;
-  struct timespec   cache_date;  // The function that operates timespec uses the same as Stats
-
-  symlink_cache_entry() : link(""), hit_count(0) {
-    cache_date.tv_sec  = 0;
-    cache_date.tv_nsec = 0;
-  }
+    std::string       link;
+    unsigned long     hit_count = 0;
+    struct timespec   cache_date = {0, 0};  // The function that operates timespec uses the same as Stats
 };
 
-typedef std::map<std::string, symlink_cache_entry*> symlink_cache_t;
+typedef std::map<std::string, symlink_cache_entry> symlink_cache_t;
 
 //
-// Class
+// Typedefs for No truncate file name cache
 //
+typedef std::vector<std::string> notruncate_filelist_t;                    // untruncated file name list in dir
+typedef std::map<std::string, notruncate_filelist_t> notruncate_dir_map_t; // key is parent dir path
+
+//-------------------------------------------------------------------
+// Class StatCache
+//-------------------------------------------------------------------
 // [NOTE] About Symbolic link cache
 // The Stats cache class now also has a symbolic link cache.
 // It is possible to take out the Symbolic link cache in another class,
@@ -75,94 +80,127 @@ typedef std::map<std::string, symlink_cache_entry*> symlink_cache_t;
 //
 class StatCache
 {
-  private:
-    static StatCache       singleton;
-    static pthread_mutex_t stat_cache_lock;
-    stat_cache_t           stat_cache;
-    bool                   IsExpireTime;
-    bool                   IsExpireIntervalType;    // if this flag is true, cache data is updated at last access time.
-    time_t                 ExpireTime;
-    unsigned long          CacheSize;
-    bool                   IsCacheNoObject;
-    symlink_cache_t        symlink_cache;
+    private:
+        static StatCache       singleton;
+        static std::mutex      stat_cache_lock;
+        stat_cache_t           stat_cache GUARDED_BY(stat_cache_lock);
+        bool                   IsExpireTime;
+        bool                   IsExpireIntervalType;    // if this flag is true, cache data is updated at last access time.
+        time_t                 ExpireTime;
+        unsigned long          CacheSize;
+        bool                   IsCacheNoObject;
+        symlink_cache_t        symlink_cache GUARDED_BY(stat_cache_lock);
+        notruncate_dir_map_t   notruncate_file_cache GUARDED_BY(stat_cache_lock);
 
-  private:
-    StatCache();
-    ~StatCache();
+        StatCache();
+        ~StatCache();
 
-    void Clear(void);
-    bool GetStat(const std::string& key, struct stat* pst, headers_t* meta, bool overcheck, const char* petag, bool* pisforce);
-    // Truncate stat cache
-    bool TruncateCache(void);
-    // Truncate symbolic link cache
-    bool TruncateSymlink(void);
+        void Clear();
+        bool GetStat(const std::string& key, struct stat* pst, headers_t* meta, bool overcheck, const char* petag, bool* pisforce);
+        // Truncate stat cache
+        bool TruncateCache() REQUIRES(StatCache::stat_cache_lock);
+        // Truncate symbolic link cache
+        bool TruncateSymlink() REQUIRES(StatCache::stat_cache_lock);
 
-  public:
-    // Reference singleton
-    static StatCache* getStatCacheData(void) {
-      return &singleton;
-    }
+        bool AddNotruncateCache(const std::string& key) REQUIRES(stat_cache_lock);
+        bool DelNotruncateCache(const std::string& key) REQUIRES(stat_cache_lock);
 
-    // Attribute
-    unsigned long GetCacheSize(void) const;
-    unsigned long SetCacheSize(unsigned long size);
-    time_t GetExpireTime(void) const;
-    time_t SetExpireTime(time_t expire, bool is_interval = false);
-    time_t UnsetExpireTime(void);
-    bool SetCacheNoObject(bool flag);
-    bool EnableCacheNoObject(void) {
-      return SetCacheNoObject(true);
-    }
-    bool DisableCacheNoObject(void) {
-      return SetCacheNoObject(false);
-    }
-    bool GetCacheNoObject(void) const {
-      return IsCacheNoObject;
-    }
+    public:
+        StatCache(const StatCache&) = delete;
+        StatCache(StatCache&&) = delete;
+        StatCache& operator=(const StatCache&) = delete;
+        StatCache& operator=(StatCache&&) = delete;
 
-    // Get stat cache
-    bool GetStat(const std::string& key, struct stat* pst, headers_t* meta, bool overcheck = true, bool* pisforce = NULL) {
-      return GetStat(key, pst, meta, overcheck, NULL, pisforce);
-    }
-    bool GetStat(const std::string& key, struct stat* pst, bool overcheck = true) {
-      return GetStat(key, pst, NULL, overcheck, NULL, NULL);
-    }
-    bool GetStat(const std::string& key, headers_t* meta, bool overcheck = true) {
-      return GetStat(key, NULL, meta, overcheck, NULL, NULL);
-    }
-    bool HasStat(const std::string& key, bool overcheck = true) {
-      return GetStat(key, NULL, NULL, overcheck, NULL, NULL);
-    }
-    bool HasStat(const std::string& key, const char* etag, bool overcheck = true) {
-      return GetStat(key, NULL, NULL, overcheck, etag, NULL);
-    }
+        // Reference singleton
+        static StatCache* getStatCacheData()
+        {
+            return &singleton;
+        }
 
-    // Cache For no object
-    bool IsNoObjectCache(const std::string& key, bool overcheck = true);
-    bool AddNoObjectCache(const std::string& key);
+        // Attribute
+        unsigned long GetCacheSize() const;
+        unsigned long SetCacheSize(unsigned long size);
+        time_t GetExpireTime() const;
+        time_t SetExpireTime(time_t expire, bool is_interval = false);
+        time_t UnsetExpireTime();
+        bool SetCacheNoObject(bool flag);
+        bool EnableCacheNoObject()
+        {
+            return SetCacheNoObject(true);
+        }
+        bool DisableCacheNoObject()
+        {
+            return SetCacheNoObject(false);
+        }
+        bool GetCacheNoObject() const
+        {
+            return IsCacheNoObject;
+        }
 
-    // Add stat cache
-    bool AddStat(const std::string& key, headers_t& meta, bool forcedir = false, bool no_truncate = false);
+        // Get stat cache
+        bool GetStat(const std::string& key, struct stat* pst, headers_t* meta, bool overcheck = true, bool* pisforce = nullptr)
+        {
+            return GetStat(key, pst, meta, overcheck, nullptr, pisforce);
+        }
+        bool GetStat(const std::string& key, struct stat* pst, bool overcheck = true)
+        {
+            return GetStat(key, pst, nullptr, overcheck, nullptr, nullptr);
+        }
+        bool GetStat(const std::string& key, headers_t* meta, bool overcheck = true)
+        {
+            return GetStat(key, nullptr, meta, overcheck, nullptr, nullptr);
+        }
+        bool HasStat(const std::string& key, bool overcheck = true)
+        {
+            return GetStat(key, nullptr, nullptr, overcheck, nullptr, nullptr);
+        }
+        bool HasStat(const std::string& key, const char* etag, bool overcheck = true)
+        {
+            return GetStat(key, nullptr, nullptr, overcheck, etag, nullptr);
+        }
+        bool HasStat(const std::string& key, struct stat* pst, const char* etag)
+        {
+            return GetStat(key, pst, nullptr, true, etag, nullptr);
+        }
 
-    // Change no truncate flag
-    void ChangeNoTruncateFlag(const std::string& key, bool no_truncate);
+        // Cache For no object
+        bool IsNoObjectCache(const std::string& key, bool overcheck = true);
+        bool AddNoObjectCache(const std::string& key);
 
-    // Delete stat cache
-    bool DelStat(const char* key, bool lock_already_held = false);
-    bool DelStat(std::string& key, bool lock_already_held = false) {
-      return DelStat(key.c_str(), lock_already_held);
-    }
+        // Add stat cache
+        bool AddStat(const std::string& key, const headers_t& meta, bool forcedir = false, bool no_truncate = false);
 
-    // Cache for symbolic link
-    bool GetSymlink(const std::string& key, std::string& value);
-    bool AddSymlink(const std::string& key, const std::string& value);
-    bool DelSymlink(const char* key, bool lock_already_held = false);
+        // Update meta stats
+        bool UpdateMetaStats(const std::string& key, const headers_t& meta);
+
+        // Change no truncate flag
+        void ChangeNoTruncateFlag(const std::string& key, bool no_truncate);
+
+        // Delete stat cache
+        bool DelStat(const std::string& key)
+        {
+            const std::lock_guard<std::mutex> lock(StatCache::stat_cache_lock);
+            return DelStatHasLock(key);
+        }
+        bool DelStatHasLock(const std::string& key) REQUIRES(StatCache::stat_cache_lock);
+
+        // Cache for symbolic link
+        bool GetSymlink(const std::string& key, std::string& value);
+        bool AddSymlink(const std::string& key, const std::string& value);
+        bool DelSymlink(const std::string& key) {
+            const std::lock_guard<std::mutex> lock(StatCache::stat_cache_lock);
+            return DelSymlinkHasLock(key);
+        }
+        bool DelSymlinkHasLock(const std::string& key) REQUIRES(stat_cache_lock);
+
+        // Cache for Notruncate file
+        bool GetNotruncateCache(const std::string& parentdir, notruncate_filelist_t& list);
 };
 
-//
+//-------------------------------------------------------------------
 // Functions
-//
-bool convert_header_to_stat(const char* path, headers_t& meta, struct stat* pst, bool forcedir = false);
+//-------------------------------------------------------------------
+bool convert_header_to_stat(const char* path, const headers_t& meta, struct stat* pst, bool forcedir = false);
 
 #endif // S3FS_CACHE_H_
 
@@ -171,6 +209,6 @@ bool convert_header_to_stat(const char* path, headers_t& meta, struct stat* pst,
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/common.h

@@ -21,164 +21,59 @@
 #ifndef S3FS_COMMON_H_
 #define S3FS_COMMON_H_
 
-#include <stdlib.h>
+#include <string>
+#include <sys/types.h>
+
 #include "../config.h"
 
-//
-// Extended attribute
-//
-#ifdef HAVE_SYS_EXTATTR_H
-#include <sys/extattr.h>
-#elif HAVE_ATTR_XATTR_H
-#include <attr/xattr.h>
-#elif HAVE_SYS_XATTR_H
-#include <sys/xattr.h>
-#endif
-
-//
-// Macro
-//
-static inline const char *SAFESTRPTR(const char *strptr) { return strptr ? strptr : ""; }
-
-//
-// Debug level
-//
-enum s3fs_log_level{
- S3FS_LOG_CRIT = 0,          // LOG_CRIT
- S3FS_LOG_ERR  = 1,          // LOG_ERR
- S3FS_LOG_WARN = 3,          // LOG_WARNING
- S3FS_LOG_INFO = 7,          // LOG_INFO
- S3FS_LOG_DBG  = 15          // LOG_DEBUG
-};
-
-//
-// Debug macros
-//
-#define IS_S3FS_LOG_CRIT()   (S3FS_LOG_CRIT == debug_level)
-#define IS_S3FS_LOG_ERR()    (S3FS_LOG_ERR  == (debug_level & S3FS_LOG_DBG))
-#define IS_S3FS_LOG_WARN()   (S3FS_LOG_WARN == (debug_level & S3FS_LOG_DBG))
-#define IS_S3FS_LOG_INFO()   (S3FS_LOG_INFO == (debug_level & S3FS_LOG_DBG))
-#define IS_S3FS_LOG_DBG()    (S3FS_LOG_DBG  == (debug_level & S3FS_LOG_DBG))
-
-#define S3FS_LOG_LEVEL_TO_SYSLOG(level) \
-        ( S3FS_LOG_DBG  == (level & S3FS_LOG_DBG) ? LOG_DEBUG   : \
-          S3FS_LOG_INFO == (level & S3FS_LOG_DBG) ? LOG_INFO    : \
-          S3FS_LOG_WARN == (level & S3FS_LOG_DBG) ? LOG_WARNING : \
-          S3FS_LOG_ERR  == (level & S3FS_LOG_DBG) ? LOG_ERR     : LOG_CRIT )
-
-#define S3FS_LOG_LEVEL_STRING(level) \
-        ( S3FS_LOG_DBG  == (level & S3FS_LOG_DBG) ? "[DBG] " : \
-          S3FS_LOG_INFO == (level & S3FS_LOG_DBG) ? "[INF] " : \
-          S3FS_LOG_WARN == (level & S3FS_LOG_DBG) ? "[WAN] " : \
-          S3FS_LOG_ERR  == (level & S3FS_LOG_DBG) ? "[ERR] " : "[CRT] " )
-
-#define S3FS_LOG_NEST_MAX    4
-#define S3FS_LOG_NEST(nest)  (nest < S3FS_LOG_NEST_MAX ? s3fs_log_nest[nest] : s3fs_log_nest[S3FS_LOG_NEST_MAX - 1])
-
-#define S3FS_LOW_LOGPRN(level, fmt, ...) \
-     do{ \
-       if(S3FS_LOG_CRIT == level || (S3FS_LOG_CRIT != debug_level && level == (debug_level & level))){ \
-         if(foreground){ \
-           fprintf(stdout, "%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(level), __FILE__, __func__, __LINE__, __VA_ARGS__); \
-         }else{ \
-           syslog(S3FS_LOG_LEVEL_TO_SYSLOG(level), "%s%s:%s(%d): " fmt "%s", instance_name.c_str(), __FILE__, __func__, __LINE__, __VA_ARGS__); \
-         } \
-       } \
-     }while(0)
-
-#define S3FS_LOW_LOGPRN2(level, nest, fmt, ...) \
-     do{ \
-       if(S3FS_LOG_CRIT == level || (S3FS_LOG_CRIT != debug_level && level == (debug_level & level))){ \
-         if(foreground){ \
-           fprintf(stdout, "%s%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(level), S3FS_LOG_NEST(nest), __FILE__, __func__, __LINE__, __VA_ARGS__); \
-         }else{ \
-           syslog(S3FS_LOG_LEVEL_TO_SYSLOG(level), "%s%s" fmt "%s", instance_name.c_str(), S3FS_LOG_NEST(nest), __VA_ARGS__); \
-         } \
-       } \
-     }while(0)
-
-#define S3FS_LOW_LOGPRN_EXIT(fmt, ...) \
-     do{ \
-       if(foreground){ \
-         fprintf(stderr, "s3fs: " fmt "%s\n", __VA_ARGS__); \
-       }else{ \
-         fprintf(stderr, "s3fs: " fmt "%s\n", __VA_ARGS__); \
-         syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_CRIT), "%ss3fs: " fmt "%s", instance_name.c_str(), __VA_ARGS__); \
-       } \
-     }while(0)
-
-// Special macro for init message
-#define S3FS_PRN_INIT_INFO(fmt, ...) \
-     do{ \
-       if(foreground){ \
-         fprintf(stdout, "%s%s%s:%s(%d): " fmt "%s\n", S3FS_LOG_LEVEL_STRING(S3FS_LOG_INFO), S3FS_LOG_NEST(0), __FILE__, __func__, __LINE__, __VA_ARGS__, ""); \
-       }else{ \
-         syslog(S3FS_LOG_LEVEL_TO_SYSLOG(S3FS_LOG_INFO), "%s%s" fmt "%s", instance_name.c_str(), S3FS_LOG_NEST(0), __VA_ARGS__, ""); \
-       } \
-     }while(0)
-
-// [NOTE]
-// small trick for VA_ARGS
-//
-#define S3FS_PRN_EXIT(fmt, ...)   S3FS_LOW_LOGPRN_EXIT(fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_CRIT(fmt, ...)   S3FS_LOW_LOGPRN(S3FS_LOG_CRIT, fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_ERR(fmt, ...)    S3FS_LOW_LOGPRN(S3FS_LOG_ERR,  fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_WARN(fmt, ...)   S3FS_LOW_LOGPRN(S3FS_LOG_WARN, fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_DBG(fmt, ...)    S3FS_LOW_LOGPRN(S3FS_LOG_DBG,  fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_INFO(fmt, ...)   S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 0, fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_INFO0(fmt, ...)  S3FS_LOG_INFO(fmt, __VA_ARGS__)
-#define S3FS_PRN_INFO1(fmt, ...)  S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 1, fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_INFO2(fmt, ...)  S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 2, fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_INFO3(fmt, ...)  S3FS_LOW_LOGPRN2(S3FS_LOG_INFO, 3, fmt, ##__VA_ARGS__, "")
-#define S3FS_PRN_CURL(fmt, ...)   S3FS_LOW_LOGPRN2(S3FS_LOG_CRIT, 0, fmt, ##__VA_ARGS__, "")
-
-//
-// Typedef
-//
-struct header_nocase_cmp : public std::binary_function<std::string, std::string, bool>{
-  bool operator()(const std::string &strleft, const std::string &strright) const
-  {
-    return (strcasecmp(strleft.c_str(), strright.c_str()) < 0);
-  }
-};
-typedef std::map<std::string, std::string, header_nocase_cmp> headers_t;
-
-//
-// Header "x-amz-meta-xattr" is for extended attributes.
-// This header is url encoded string which is json formatted.
-//   x-amz-meta-xattr:urlencode({"xattr-1":"base64(value-1)","xattr-2":"base64(value-2)","xattr-3":"base64(value-3)"})
-//
-typedef struct xattr_value{
-  unsigned char* pvalue;
-  size_t         length;
-
-  explicit xattr_value(unsigned char* pval = NULL, size_t len = 0) : pvalue(pval), length(len) {}
-  ~xattr_value()
-  {
-    delete[] pvalue;
-  }
-}XATTRVAL, *PXATTRVAL;
-
-typedef std::map<std::string, PXATTRVAL> xattrs_t;
-
-//
+//-------------------------------------------------------------------
 // Global variables
-//
+//-------------------------------------------------------------------
 // TODO: namespace these
+static constexpr int64_t  FIVE_GB            = 5LL * 1024LL * 1024LL * 1024LL;
+static constexpr off_t    MIN_MULTIPART_SIZE = 5 * 1024 * 1024;
+
 extern bool           foreground;
 extern bool           nomultipart;
 extern bool           pathrequeststyle;
 extern bool           complement_stat;
+extern bool           noxmlns;
 extern std::string    program_name;
 extern std::string    service_path;
-extern std::string    host;
-extern std::string    bucket;
+extern std::string    s3host;
 extern std::string    mount_prefix;
 extern std::string    endpoint;
 extern std::string    cipher_suites;
 extern std::string    instance_name;
-extern s3fs_log_level debug_level;
-extern const char*    s3fs_log_nest[S3FS_LOG_NEST_MAX];
+
+//-------------------------------------------------------------------
+// For weak attribute
+//-------------------------------------------------------------------
+#define	S3FS_FUNCATTR_WEAK __attribute__ ((weak,unused))
+
+//-------------------------------------------------------------------
+// For clang -Wthread-safety
+//-------------------------------------------------------------------
+#if defined(__clang__)
+#define THREAD_ANNOTATION_ATTRIBUTE(x)   __attribute__((x))
+#else
+#define THREAD_ANNOTATION_ATTRIBUTE(x)   // no-op
+#endif
+
+#define GUARDED_BY(x) \
+    THREAD_ANNOTATION_ATTRIBUTE(guarded_by(x))
+
+#define PT_GUARDED_BY(x) \
+    THREAD_ANNOTATION_ATTRIBUTE(pt_guarded_by(x))
+
+#define REQUIRES(...) \
+    THREAD_ANNOTATION_ATTRIBUTE(requires_capability(__VA_ARGS__))
+
+#define RETURN_CAPABILITY(...) \
+    THREAD_ANNOTATION_ATTRIBUTE(lock_returned(__VA_ARGS__))
+
+#define NO_THREAD_SAFETY_ANALYSIS \
+    THREAD_ANNOTATION_ATTRIBUTE(no_thread_safety_analysis)
 
 #endif // S3FS_COMMON_H_
 
@@ -187,6 +82,6 @@ extern const char*    s3fs_log_nest[S3FS_LOG_NEST_MAX];
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/common_auth.cpp

@@ -18,72 +18,37 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
-#include <climits>
 #include <cstdio>
-#include <cstdlib>
-#include <cstring>
 #include <string>
 
 #include "s3fs_auth.h"
 #include "string_util.h"
 
-using namespace std;
-
 //-------------------------------------------------------------------
 // Utility Function
 //-------------------------------------------------------------------
-string s3fs_get_content_md5(int fd)
+std::string s3fs_get_content_md5(int fd)
 {
-  unsigned char* md5hex;
-  char* base64;
-  string Signature;
-
-  if(NULL == (md5hex = s3fs_md5hexsum(fd, 0, -1))){
-    return string("");
-  }
-  if(NULL == (base64 = s3fs_base64(md5hex, get_md5_digest_length()))){
-    return string("");  // ENOMEM
-  }
-  delete[] md5hex;
-
-  Signature = base64;
-  delete[] base64;
-
-  return Signature;
+    md5_t md5;
+    if(!s3fs_md5_fd(fd, 0, -1, &md5)){
+        // TODO: better return value?
+        return "";
+    }
+    return s3fs_base64(md5.data(), md5.size());
 }
 
-string s3fs_md5sum(int fd, off_t start, ssize_t size)
+std::string s3fs_sha256_hex_fd(int fd, off_t start, off_t size)
 {
-  size_t digestlen = get_md5_digest_length();
-  unsigned char* md5hex;
+    sha256_t sha256;
 
-  if(NULL == (md5hex = s3fs_md5hexsum(fd, start, size))){
-    return string("");
-  }
+    if(!s3fs_sha256_fd(fd, start, size, &sha256)){
+        // TODO: better return value?
+        return "";
+    }
 
-  std::string md5 = s3fs_hex(md5hex, digestlen);
-  delete[] md5hex;
+    std::string sha256hex = s3fs_hex_lower(sha256.data(), sha256.size());
 
-  return md5;
-}
-
-string s3fs_sha256sum(int fd, off_t start, ssize_t size)
-{
-  size_t digestlen = get_sha256_digest_length();
-  char sha256[2 * digestlen + 1];
-  unsigned char* sha256hex;
-
-  if(NULL == (sha256hex = s3fs_sha256hexsum(fd, start, size))){
-    return string("");
-  }
-
-  memset(sha256, 0, 2 * digestlen + 1);
-  for(size_t pos = 0; pos < digestlen; pos++){
-    snprintf(sha256 + 2 * pos, 3, "%02x", sha256hex[pos]);
-  }
-  delete[] sha256hex;
-
-  return string(sha256);
+    return sha256hex;
 }
 
 /*
@@ -91,6 +56,6 @@ string s3fs_sha256sum(int fd, off_t start, ssize_t size)
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/curl.h

@@ -21,9 +21,21 @@
 #ifndef S3FS_CURL_H_
 #define S3FS_CURL_H_
 
-#include <cassert>
+#include <atomic>
+#include <cstdint>
+#include <curl/curl.h>
+#include <map>
+#include <memory>
+#include <mutex>
+#include <string>
+#include <thread>
+#include <vector>
 
-#include "psemaphore.h"
+#include "common.h"
+#include "fdcache_page.h"
+#include "metaheader.h"
+#include "s3fs_util.h"
+#include "types.h"
 
 //----------------------------------------------
 // Avoid dependency on libcurl version
@@ -34,565 +46,375 @@
 //  CURLOPT_SSL_ENABLE_ALPN         7.36.0 and later
 //  CURLOPT_KEEP_SENDING_ON_ERROR   7.51.0 and later
 //
-// s3fs uses these, if you build s3fs with the old libcurl, 
+// s3fs uses these, if you build s3fs with the old libcurl,
 // substitute the following symbols to avoid errors.
 // If the version of libcurl linked at runtime is old,
 // curl_easy_setopt results in an error(CURLE_UNKNOWN_OPTION) and
 // a message is output.
 //
 #if defined(HAVE_CURLOPT_TCP_KEEPALIVE) && (HAVE_CURLOPT_TCP_KEEPALIVE == 1)
-  #define   S3FS_CURLOPT_TCP_KEEPALIVE          CURLOPT_TCP_KEEPALIVE
+    #define   S3FS_CURLOPT_TCP_KEEPALIVE          CURLOPT_TCP_KEEPALIVE
 #else
-  #define   S3FS_CURLOPT_TCP_KEEPALIVE          static_cast<CURLoption>(213)
+    #define   S3FS_CURLOPT_TCP_KEEPALIVE          static_cast<CURLoption>(213)
 #endif
 
 #if defined(HAVE_CURLOPT_SSL_ENABLE_ALPN) && (HAVE_CURLOPT_SSL_ENABLE_ALPN == 1)
-  #define   S3FS_CURLOPT_SSL_ENABLE_ALPN        CURLOPT_SSL_ENABLE_ALPN
+    #define   S3FS_CURLOPT_SSL_ENABLE_ALPN        CURLOPT_SSL_ENABLE_ALPN
 #else
-  #define   S3FS_CURLOPT_SSL_ENABLE_ALPN        static_cast<CURLoption>(226)
+    #define   S3FS_CURLOPT_SSL_ENABLE_ALPN        static_cast<CURLoption>(226)
 #endif
 
 #if defined(HAVE_CURLOPT_KEEP_SENDING_ON_ERROR) && (HAVE_CURLOPT_KEEP_SENDING_ON_ERROR == 1)
-  #define   S3FS_CURLOPT_KEEP_SENDING_ON_ERROR  CURLOPT_KEEP_SENDING_ON_ERROR
+    #define   S3FS_CURLOPT_KEEP_SENDING_ON_ERROR  CURLOPT_KEEP_SENDING_ON_ERROR
 #else
-  #define   S3FS_CURLOPT_KEEP_SENDING_ON_ERROR  static_cast<CURLoption>(245)
+    #define   S3FS_CURLOPT_KEEP_SENDING_ON_ERROR  static_cast<CURLoption>(245)
 #endif
 
 //----------------------------------------------
-// Symbols
+// Structure / Typedefs
 //----------------------------------------------
-static const int MIN_MULTIPART_SIZE = 5 * 1024 * 1024;
-
-//----------------------------------------------
-// class BodyData
-//----------------------------------------------
-// memory class for curl write memory callback 
-//
-class BodyData
-{
-  private:
-    char* text;    
-    size_t lastpos;
-    size_t bufsize;
-
-  private:
-    bool IsSafeSize(size_t addbytes) const {
-      return ((lastpos + addbytes + 1) > bufsize ? false : true);
-    }
-    bool Resize(size_t addbytes);
-
-  public:
-    BodyData() : text(NULL), lastpos(0), bufsize(0) {}
-    ~BodyData() {
-      Clear();
-    }
-
-    void Clear(void);
-    bool Append(void* ptr, size_t bytes);
-    bool Append(void* ptr, size_t blockSize, size_t numBlocks) {
-      return Append(ptr, (blockSize * numBlocks));
-    }
-    const char* str() const;
-    size_t size() const {
-      return lastpos;
-    }
-};
-
-//----------------------------------------------
-// Utility structs & typedefs
-//----------------------------------------------
-typedef std::vector<std::string> etaglist_t;
-
-// Each part information for Multipart upload
-struct filepart
-{
-  bool        uploaded;     // does finish uploading
-  std::string etag;         // expected etag value
-  int         fd;           // base file(temporary full file) descriptor
-  off_t       startpos;     // seek fd point for uploading
-  off_t       size;         // uploading size
-  etaglist_t* etaglist;     // use only parallel upload
-  int         etagpos;      // use only parallel upload
-
-  filepart() : uploaded(false), fd(-1), startpos(0), size(-1), etaglist(NULL), etagpos(-1) {}
-  ~filepart()
-  {
-    clear();
-  }
-
-  void clear(void)
-  {
-    uploaded = false;
-    etag     = "";
-    fd       = -1;
-    startpos = 0;
-    size     = -1;
-    etaglist = NULL;
-    etagpos  = - 1;
-  }
-
-  void add_etag_list(etaglist_t* list)
-  {
-    if(list){
-      list->push_back(std::string(""));
-      etaglist = list;
-      etagpos  = list->size() - 1;
-    }else{
-      etaglist = NULL;
-      etagpos  = - 1;
-    }
-  }
-};
-
-// for progress
-struct case_insensitive_compare_func
-{
-  bool operator()(const std::string& a, const std::string& b) const {
-    return strcasecmp(a.c_str(), b.c_str()) < 0;
-  }
-};
-typedef std::map<std::string, std::string, case_insensitive_compare_func> mimes_t;
-typedef std::pair<double, double>   progress_t;
-typedef std::map<CURL*, time_t>     curltime_t;
-typedef std::map<CURL*, progress_t> curlprogress_t;
-
-class S3fsMultiCurl;
-
-//----------------------------------------------
-// class CurlHandlerPool
-//----------------------------------------------
-typedef std::list<CURL*>            hcurllist_t;
-
-class CurlHandlerPool
-{
-public:
-  explicit CurlHandlerPool(int maxHandlers) : mMaxHandlers(maxHandlers)
-  {
-    assert(maxHandlers > 0);
-  }
-
-  bool Init();
-  bool Destroy();
-
-  CURL* GetHandler(bool only_pool);
-  void ReturnHandler(CURL* hCurl, bool restore_pool);
-
-private:
-  int             mMaxHandlers;
-  pthread_mutex_t mLock;
-  hcurllist_t     mPool;
+struct curlprogress {
+    time_t time;
+    double dl_progress;
+    double ul_progress;
 };
+typedef std::unique_ptr<CURL, decltype(&curl_easy_cleanup)> CurlUniquePtr;
 
 //----------------------------------------------
 // class S3fsCurl
 //----------------------------------------------
-class PageList;
+class CurlHandlerPool;
+class S3fsCred;
 class S3fsCurl;
+class Semaphore;
 
 // Prototype function for lazy setup options for curl handle
 typedef bool (*s3fscurl_lazy_setup)(S3fsCurl* s3fscurl);
 
-typedef std::map<std::string, std::string> iamcredmap_t;
 typedef std::map<std::string, std::string> sseckeymap_t;
-typedef std::list<sseckeymap_t>            sseckeylist_t;
-
-// storage class(rrs)
-enum storage_class_t {
-  STANDARD,
-  STANDARD_IA,
-  ONEZONE_IA,
-  REDUCED_REDUNDANCY,
-  INTELLIGENT_TIERING
-};
-
-enum acl_t {
-  PRIVATE,
-  PUBLIC_READ,
-  PUBLIC_READ_WRITE,
-  AWS_EXEC_READ,
-  AUTHENTICATED_READ,
-  BUCKET_OWNER_READ,
-  BUCKET_OWNER_FULL_CONTROL,
-  LOG_DELIVERY_WRITE,
-  INVALID_ACL
-};
-
-// sse type
-enum sse_type_t {
-  SSE_DISABLE = 0,      // not use server side encrypting
-  SSE_S3,               // server side encrypting by S3 key
-  SSE_C,                // server side encrypting by custom key
-  SSE_KMS               // server side encrypting by kms id
-};
-
-// share
-enum {
-  SHARE_MUTEX_DNS = 0,
-  SHARE_MUTEX_SSL_SESSION = 1,
-  SHARE_MUTEX_MAX = 2,
-};
+typedef std::vector<sseckeymap_t>          sseckeylist_t;
 
 // Class for lapping curl
 //
 class S3fsCurl
 {
-    friend class S3fsMultiCurl;  
+    friend class S3fsMultiCurl;
 
-  private:
-    enum REQTYPE {
-      REQTYPE_UNSET  = -1,
-      REQTYPE_DELETE = 0,
-      REQTYPE_HEAD,
-      REQTYPE_PUTHEAD,
-      REQTYPE_PUT,
-      REQTYPE_GET,
-      REQTYPE_CHKBUCKET,
-      REQTYPE_LISTBUCKET,
-      REQTYPE_PREMULTIPOST,
-      REQTYPE_COMPLETEMULTIPOST,
-      REQTYPE_UPLOADMULTIPOST,
-      REQTYPE_COPYMULTIPOST,
-      REQTYPE_MULTILIST,
-      REQTYPE_IAMCRED,
-      REQTYPE_ABORTMULTIUPLOAD,
-      REQTYPE_IAMROLE
-    };
+    private:
+        enum class REQTYPE : int8_t {
+            UNSET  = -1,
+            DELETE,
+            HEAD,
+            PUTHEAD,
+            PUT,
+            GET,
+            CHKBUCKET,
+            LISTBUCKET,
+            PREMULTIPOST,
+            COMPLETEMULTIPOST,
+            UPLOADMULTIPOST,
+            COPYMULTIPOST,
+            MULTILIST,
+            IAMCRED,
+            ABORTMULTIUPLOAD,
+            IAMROLE
+        };
 
-    // class variables
-    static pthread_mutex_t  curl_handles_lock;
-    static pthread_mutex_t  curl_share_lock[SHARE_MUTEX_MAX];
-    static bool             is_initglobal_done;
-    static CurlHandlerPool* sCurlPool;
-    static int              sCurlPoolSize;
-    static CURLSH*          hCurlShare;
-    static bool             is_cert_check;
-    static bool             is_dns_cache;
-    static bool             is_ssl_session_cache;
-    static long             connect_timeout;
-    static time_t           readwrite_timeout;
-    static int              retries;
-    static bool             is_public_bucket;
-    static acl_t            default_acl;
-    static storage_class_t  storage_class;
-    static sseckeylist_t    sseckeys;
-    static std::string      ssekmsid;
-    static sse_type_t       ssetype;
-    static bool             is_content_md5;
-    static bool             is_verbose;
-    static std::string      AWSAccessKeyId;
-    static std::string      AWSSecretAccessKey;
-    static std::string      AWSAccessToken;
-    static time_t           AWSAccessTokenExpire;
-    static bool             is_ecs;
-    static bool             is_use_session_token;
-    static bool             is_ibm_iam_auth;
-    static std::string      IAM_cred_url;
-    static size_t           IAM_field_count;
-    static std::string      IAM_token_field;
-    static std::string      IAM_expiry_field;
-    static std::string      IAM_role;
-    static long             ssl_verify_hostname;
-    static curltime_t       curl_times;
-    static curlprogress_t   curl_progress;
-    static std::string      curl_ca_bundle;
-    static mimes_t          mimeTypes;
-    static std::string      userAgent;
-    static int              max_parallel_cnt;
-    static int              max_multireq;
-    static off_t            multipart_size;
-    static bool             is_sigv4;
-    static bool             is_ua;             // User-Agent
-    static bool             requester_pays;
+        // Environment name
+        static constexpr char   S3FS_SSL_PRIVKEY_PASSWORD[] = "S3FS_SSL_PRIVKEY_PASSWORD";
 
-    // variables
-    CURL*                hCurl;
-    REQTYPE              type;                 // type of request
-    std::string          path;                 // target object path
-    std::string          base_path;            // base path (for multi curl head request)
-    std::string          saved_path;           // saved path = cache key (for multi curl head request)
-    std::string          url;                  // target object path(url)
-    struct curl_slist*   requestHeaders;
-    headers_t            responseHeaders;      // header data by HeaderCallback
-    BodyData             bodydata;             // body data by WriteMemoryCallback
-    BodyData             headdata;             // header data by WriteMemoryCallback
-    volatile long        LastResponseCode;
-    const unsigned char* postdata;             // use by post method and read callback function.
-    int                  postdata_remaining;   // use by post method and read callback function.
-    filepart             partdata;             // use by multipart upload/get object callback
-    bool                 is_use_ahbe;          // additional header by extension
-    int                  retry_count;          // retry count for multipart
-    FILE*                b_infile;             // backup for retrying
-    const unsigned char* b_postdata;           // backup for retrying
-    int                  b_postdata_remaining; // backup for retrying
-    off_t                b_partdata_startpos;  // backup for retrying
-    ssize_t              b_partdata_size;      // backup for retrying
-    int                  b_ssekey_pos;         // backup for retrying
-    std::string          b_ssevalue;           // backup for retrying
-    sse_type_t           b_ssetype;            // backup for retrying
-    std::string          b_from;               // backup for retrying(for copy request)
-    headers_t            b_meta;               // backup for retrying(for copy request)
-    std::string          op;                   // the HTTP verb of the request ("PUT", "GET", etc.)
-    std::string          query_string;         // request query string
-    Semaphore            *sem;
-    pthread_mutex_t      *completed_tids_lock;
-    std::vector<pthread_t> *completed_tids;
-    s3fscurl_lazy_setup  fpLazySetup;          // curl options for lazy setting function
+        // class variables
+        static std::atomic<bool> curl_warnings_once;  // emit older curl warnings only once
+        static std::mutex       curl_handles_lock;
+        static struct callback_locks_t {
+            std::mutex      dns;
+            std::mutex      ssl_session;
+        } callback_locks;
+        static bool             is_initglobal_done;
+        static std::unique_ptr<CurlHandlerPool> sCurlPool;
+        static int              sCurlPoolSize;
+        static CURLSH*          hCurlShare;
+        static bool             is_cert_check;
+        static bool             is_dns_cache;
+        static bool             is_ssl_session_cache;
+        static long             connect_timeout;
+        static time_t           readwrite_timeout;
+        static int              retries;
+        static bool             is_public_bucket;
+        static acl_t            default_acl;
+        static std::string      storage_class;
+        static sseckeylist_t    sseckeys;
+        static std::string      ssekmsid;
+        static sse_type_t       ssetype;
+        static bool             is_content_md5;
+        static bool             is_verbose;
+        static bool             is_dump_body;
+        static S3fsCred*        ps3fscred;
+        static long             ssl_verify_hostname;
+        static std::string      client_cert;
+        static std::string      client_cert_type;
+        static std::string      client_priv_key;
+        static std::string      client_priv_key_type;
+        static std::string      client_key_password;
+        static std::map<const CURL*, curlprogress> curl_progress;
+        static std::string      curl_ca_bundle;
+        static mimes_t          mimeTypes;
+        static std::string      userAgent;
+        static int              max_parallel_cnt;
+        static int              max_multireq;
+        static off_t            multipart_size;
+        static off_t            multipart_copy_size;
+        static signature_type_t signature_type;
+        static bool             is_unsigned_payload;
+        static bool             is_ua;             // User-Agent
+        static bool             listobjectsv2;
+        static bool             requester_pays;
+        static std::string      proxy_url;
+        static bool             proxy_http;
+        static std::string      proxy_userpwd;     // load from file(<username>:<passphrase>)
+        static long             ipresolve_type;    // this value is a libcurl symbol.
 
-  public:
-    // constructor/destructor
-    explicit S3fsCurl(bool ahbe = false);
-    ~S3fsCurl();
+        // variables
+        CurlUniquePtr        hCurl PT_GUARDED_BY(curl_handles_lock) = {nullptr, curl_easy_cleanup};
+        REQTYPE              type;                 // type of request
+        std::string          path;                 // target object path
+        std::string          base_path;            // base path (for multi curl head request)
+        std::string          saved_path;           // saved path = cache key (for multi curl head request)
+        std::string          url;                  // target object path(url)
+        struct curl_slist*   requestHeaders;
+        headers_t            responseHeaders;      // header data by HeaderCallback
+        std::string          bodydata;             // body data by WriteMemoryCallback
+        std::string          headdata;             // header data by WriteMemoryCallback
+        long                 LastResponseCode;
+        const unsigned char* postdata;             // use by post method and read callback function.
+        off_t                postdata_remaining;   // use by post method and read callback function.
+        filepart             partdata;             // use by multipart upload/get object callback
+        bool                 is_use_ahbe;          // additional header by extension
+        int                  retry_count;          // retry count for multipart
+        std::unique_ptr<FILE, decltype(&s3fs_fclose)> b_infile = {nullptr, &s3fs_fclose};  // backup for retrying
+        const unsigned char* b_postdata;           // backup for retrying
+        off_t                b_postdata_remaining; // backup for retrying
+        off_t                b_partdata_startpos;  // backup for retrying
+        off_t                b_partdata_size;      // backup for retrying
+        size_t               b_ssekey_pos;         // backup for retrying
+        std::string          b_ssevalue;           // backup for retrying
+        sse_type_t           b_ssetype;            // backup for retrying
+        std::string          b_from;               // backup for retrying(for copy request)
+        headers_t            b_meta;               // backup for retrying(for copy request)
+        std::string          op;                   // the HTTP verb of the request ("PUT", "GET", etc.)
+        std::string          query_string;         // request query string
+        Semaphore            *sem;
+        std::mutex           *completed_tids_lock;
+        std::vector<std::thread::id> *completed_tids PT_GUARDED_BY(*completed_tids_lock);
+        s3fscurl_lazy_setup  fpLazySetup;          // curl options for lazy setting function
+        CURLcode             curlCode;             // handle curl return
 
-  private:
-    // class methods
-    static bool InitGlobalCurl(void);
-    static bool DestroyGlobalCurl(void);
-    static bool InitShareCurl(void);
-    static bool DestroyShareCurl(void);
-    static void LockCurlShare(CURL* handle, curl_lock_data nLockData, curl_lock_access laccess, void* useptr);
-    static void UnlockCurlShare(CURL* handle, curl_lock_data nLockData, void* useptr);
-    static bool InitCryptMutex(void);
-    static bool DestroyCryptMutex(void);
-    static int CurlProgress(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
+    public:
+        static constexpr long S3FSCURL_RESPONSECODE_NOTSET      = -1;
+        static constexpr long S3FSCURL_RESPONSECODE_FATAL_ERROR = -2;
+        static constexpr int  S3FSCURL_PERFORM_RESULT_NOTSET    = 1;
 
-    static bool InitMimeType(const char* MimeFile = NULL);
-    static bool LocateBundle(void);
-    static size_t HeaderCallback(void *data, size_t blockSize, size_t numBlocks, void *userPtr);
-    static size_t WriteMemoryCallback(void *ptr, size_t blockSize, size_t numBlocks, void *data);
-    static size_t ReadCallback(void *ptr, size_t size, size_t nmemb, void *userp);
-    static size_t UploadReadCallback(void *ptr, size_t size, size_t nmemb, void *userp);
-    static size_t DownloadWriteCallback(void* ptr, size_t size, size_t nmemb, void* userp);
+    public:
+        // constructor/destructor
+        explicit S3fsCurl(bool ahbe = false);
+        ~S3fsCurl();
+        S3fsCurl(const S3fsCurl&) = delete;
+        S3fsCurl(S3fsCurl&&) = delete;
+        S3fsCurl& operator=(const S3fsCurl&) = delete;
+        S3fsCurl& operator=(S3fsCurl&&) = delete;
 
-    static bool UploadMultipartPostCallback(S3fsCurl* s3fscurl);
-    static bool CopyMultipartPostCallback(S3fsCurl* s3fscurl);
-    static bool MixMultipartPostCallback(S3fsCurl* s3fscurl);
-    static S3fsCurl* UploadMultipartPostRetryCallback(S3fsCurl* s3fscurl);
-    static S3fsCurl* CopyMultipartPostRetryCallback(S3fsCurl* s3fscurl);
-    static S3fsCurl* MixMultipartPostRetryCallback(S3fsCurl* s3fscurl);
-    static S3fsCurl* ParallelGetObjectRetryCallback(S3fsCurl* s3fscurl);
+    private:
+        // class methods
+        static bool InitGlobalCurl();
+        static bool DestroyGlobalCurl();
+        static bool InitShareCurl();
+        static bool DestroyShareCurl();
+        static void LockCurlShare(CURL* handle, curl_lock_data nLockData, curl_lock_access laccess, void* useptr) NO_THREAD_SAFETY_ANALYSIS;
+        static void UnlockCurlShare(CURL* handle, curl_lock_data nLockData, void* useptr) NO_THREAD_SAFETY_ANALYSIS;
+        static bool InitCryptMutex();
+        static bool DestroyCryptMutex();
+        static int CurlProgress(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow);
+        static std::string extractURI(const std::string& url);
 
-    // lazy functions for set curl options
-    static bool UploadMultipartPostSetCurlOpts(S3fsCurl* s3fscurl);
-    static bool CopyMultipartPostSetCurlOpts(S3fsCurl* s3fscurl);
-    static bool PreGetObjectRequestSetCurlOpts(S3fsCurl* s3fscurl);
-    static bool PreHeadRequestSetCurlOpts(S3fsCurl* s3fscurl);
 
-    static bool ParseIAMCredentialResponse(const char* response, iamcredmap_t& keyval);
-    static bool SetIAMCredentials(const char* response);
-    static bool ParseIAMRoleFromMetaDataResponse(const char* response, std::string& rolename);
-    static bool SetIAMRoleFromMetaData(const char* response);
-    static bool LoadEnvSseCKeys(void);
-    static bool LoadEnvSseKmsid(void);
-    static bool PushbackSseKeys(std::string& onekey);
-    static bool AddUserAgent(CURL* hCurl);
+        static bool LocateBundle();
+        static size_t HeaderCallback(void *data, size_t blockSize, size_t numBlocks, void *userPtr);
+        static size_t WriteMemoryCallback(void *ptr, size_t blockSize, size_t numBlocks, void *data);
+        static size_t ReadCallback(void *ptr, size_t size, size_t nmemb, void *userp);
+        static size_t UploadReadCallback(void *ptr, size_t size, size_t nmemb, void *userp);
+        static size_t DownloadWriteCallback(void* ptr, size_t size, size_t nmemb, void* userp);
 
-    static int CurlDebugFunc(CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
+        static bool UploadMultipartPostCallback(S3fsCurl* s3fscurl, void* param);
+        static bool CopyMultipartPostCallback(S3fsCurl* s3fscurl, void* param);
+        static bool MixMultipartPostCallback(S3fsCurl* s3fscurl, void* param);
+        static std::unique_ptr<S3fsCurl> UploadMultipartPostRetryCallback(S3fsCurl* s3fscurl);
+        static std::unique_ptr<S3fsCurl> CopyMultipartPostRetryCallback(S3fsCurl* s3fscurl);
+        static std::unique_ptr<S3fsCurl> MixMultipartPostRetryCallback(S3fsCurl* s3fscurl);
+        static std::unique_ptr<S3fsCurl> ParallelGetObjectRetryCallback(S3fsCurl* s3fscurl);
 
-    // methods
-    bool ResetHandle(void);
-    bool RemakeHandle(void);
-    bool ClearInternalData(void);
-    void insertV4Headers();
-    void insertV2Headers();
-    void insertIBMIAMHeaders();
-    void insertAuthHeaders();
-    std::string CalcSignatureV2(const std::string& method, const std::string& strMD5, const std::string& content_type, const std::string& date, const std::string& resource);
-    std::string CalcSignature(const std::string& method, const std::string& canonical_uri, const std::string& query_string, const std::string& strdate, const std::string& payload_hash, const std::string& date8601);
-    int GetIAMCredentials(void);
+        // lazy functions for set curl options
+        static bool CopyMultipartPostSetCurlOpts(S3fsCurl* s3fscurl);
+        static bool PreGetObjectRequestSetCurlOpts(S3fsCurl* s3fscurl);
+        static bool PreHeadRequestSetCurlOpts(S3fsCurl* s3fscurl);
 
-    int UploadMultipartPostSetup(const char* tpath, int part_num, const std::string& upload_id);
-    int CopyMultipartPostSetup(const char* from, const char* to, int part_num, const std::string& upload_id, headers_t& meta);
-    bool UploadMultipartPostComplete();
-    bool CopyMultipartPostComplete();
-    bool MixMultipartPostComplete();
+        static bool LoadEnvSseCKeys();
+        static bool LoadEnvSseKmsid();
+        static bool PushbackSseKeys(const std::string& onekey);
+        static bool AddUserAgent(const CurlUniquePtr& hCurl);
 
-  public:
-    // class methods
-    static bool InitS3fsCurl(const char* MimeFile = NULL);
-    static bool DestroyS3fsCurl(void);
-    static int ParallelMultipartUploadRequest(const char* tpath, headers_t& meta, int fd);
-    static int ParallelMixMultipartUploadRequest(const char* tpath, headers_t& meta, int fd, const PageList& pagelist);
-    static int ParallelGetObjectRequest(const char* tpath, int fd, off_t start, ssize_t size);
-    static bool CheckIAMCredentialUpdate(void);
+        static int CurlDebugFunc(const CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
+        static int CurlDebugBodyInFunc(const CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
+        static int CurlDebugBodyOutFunc(const CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr);
+        static int RawCurlDebugFunc(const CURL* hcurl, curl_infotype type, char* data, size_t size, void* userptr, curl_infotype datatype);
 
-    // class methods(variables)
-    static std::string LookupMimeType(const std::string& name);
-    static bool SetCheckCertificate(bool isCertCheck);
-    static bool SetDnsCache(bool isCache);
-    static bool SetSslSessionCache(bool isCache);
-    static long SetConnectTimeout(long timeout);
-    static time_t SetReadwriteTimeout(time_t timeout);
-    static time_t GetReadwriteTimeout(void) { return S3fsCurl::readwrite_timeout; }
-    static int SetRetries(int count);
-    static bool SetPublicBucket(bool flag);
-    static bool IsPublicBucket(void) { return S3fsCurl::is_public_bucket; }
-    static acl_t SetDefaultAcl(acl_t acl);
-    static acl_t GetDefaultAcl();
-    static storage_class_t SetStorageClass(storage_class_t storage_class);
-    static storage_class_t GetStorageClass() { return S3fsCurl::storage_class; }
-    static bool LoadEnvSse(void) { return (S3fsCurl::LoadEnvSseCKeys() && S3fsCurl::LoadEnvSseKmsid()); }
-    static sse_type_t SetSseType(sse_type_t type);
-    static sse_type_t GetSseType(void) { return S3fsCurl::ssetype; }
-    static bool IsSseDisable(void) { return (SSE_DISABLE == S3fsCurl::ssetype); }
-    static bool IsSseS3Type(void) { return (SSE_S3 == S3fsCurl::ssetype); }
-    static bool IsSseCType(void) { return (SSE_C == S3fsCurl::ssetype); }
-    static bool IsSseKmsType(void) { return (SSE_KMS == S3fsCurl::ssetype); }
-    static bool FinalCheckSse(void);
-    static bool SetSseCKeys(const char* filepath);
-    static bool SetSseKmsid(const char* kmsid);
-    static bool IsSetSseKmsId(void) { return !S3fsCurl::ssekmsid.empty(); }
-    static const char* GetSseKmsId(void) { return S3fsCurl::ssekmsid.c_str(); }
-    static bool GetSseKey(std::string& md5, std::string& ssekey);
-    static bool GetSseKeyMd5(int pos, std::string& md5);
-    static int GetSseKeyCount(void);
-    static bool SetContentMd5(bool flag);
-    static bool SetVerbose(bool flag);
-    static bool GetVerbose(void) { return S3fsCurl::is_verbose; }
-    static bool SetAccessKey(const char* AccessKeyId, const char* SecretAccessKey);
-    static bool SetAccessKeyWithSessionToken(const char* AccessKeyId, const char* SecretAccessKey, const char * SessionToken);
-    static bool IsSetAccessKeyID(void){
-                  return (0 < S3fsCurl::AWSAccessKeyId.size());
-                }
-    static bool IsSetAccessKeys(void){
-                  return (0 < S3fsCurl::IAM_role.size() || ((0 < S3fsCurl::AWSAccessKeyId.size() || S3fsCurl::is_ibm_iam_auth) && 0 < S3fsCurl::AWSSecretAccessKey.size()));
-                }
-    static long SetSslVerifyHostname(long value);
-    static long GetSslVerifyHostname(void) { return S3fsCurl::ssl_verify_hostname; }
-    // maximum parallel GET and PUT requests
-    static int SetMaxParallelCount(int value);
-    static int GetMaxParallelCount(void) { return S3fsCurl::max_parallel_cnt; }
-    // maximum parallel HEAD requests
-    static int SetMaxMultiRequest(int max);
-    static int GetMaxMultiRequest(void) { return S3fsCurl::max_multireq; }
-    static bool SetIsECS(bool flag);
-    static bool SetIsIBMIAMAuth(bool flag);
-    static size_t SetIAMFieldCount(size_t field_count);
-    static std::string SetIAMCredentialsURL(const char* url);
-    static std::string SetIAMTokenField(const char* token_field);
-    static std::string SetIAMExpiryField(const char* expiry_field);
-    static std::string SetIAMRole(const char* role);
-    static const char* GetIAMRole(void) { return S3fsCurl::IAM_role.c_str(); }
-    static bool SetMultipartSize(off_t size);
-    static off_t GetMultipartSize(void) { return S3fsCurl::multipart_size; }
-    static bool SetSignatureV4(bool isset) { bool bresult = S3fsCurl::is_sigv4; S3fsCurl::is_sigv4 = isset; return bresult; }
-    static bool IsSignatureV4(void) { return S3fsCurl::is_sigv4; }
-    static bool SetUserAgentFlag(bool isset) { bool bresult = S3fsCurl::is_ua; S3fsCurl::is_ua = isset; return bresult; }
-    static bool IsUserAgentFlag(void) { return S3fsCurl::is_ua; }
-    static void InitUserAgent(void);
-    static bool SetRequesterPays(bool flag) { bool old_flag = S3fsCurl::requester_pays; S3fsCurl::requester_pays = flag; return old_flag; }
-    static bool IsRequesterPays(void) { return S3fsCurl::requester_pays; }
+        // methods
+        bool ResetHandle() REQUIRES(S3fsCurl::curl_handles_lock);
+        bool RemakeHandle();
+        bool ClearInternalData();
+        bool insertV4Headers(const std::string& access_key_id, const std::string& secret_access_key, const std::string& access_token);
+        void insertV2Headers(const std::string& access_key_id, const std::string& secret_access_key, const std::string& access_token);
+        void insertIBMIAMHeaders(const std::string& access_key_id, const std::string& access_token);
+        bool insertAuthHeaders();
+        bool AddSseRequestHead(sse_type_t ssetype, const std::string& ssevalue, bool is_copy);
+        std::string CalcSignatureV2(const std::string& method, const std::string& strMD5, const std::string& content_type, const std::string& date, const std::string& resource, const std::string& secret_access_key, const std::string& access_token);
+        std::string CalcSignature(const std::string& method, const std::string& canonical_uri, const std::string& query_string, const std::string& strdate, const std::string& payload_hash, const std::string& date8601, const std::string& secret_access_key, const std::string& access_token);
+        int UploadMultipartPostSetup(const char* tpath, int part_num, const std::string& upload_id);
+        int CopyMultipartPostSetup(const char* from, const char* to, int part_num, const std::string& upload_id, headers_t& meta);
+        bool UploadMultipartPostComplete();
+        bool CopyMultipartPostComplete();
+        int MapPutErrorResponse(int result);
 
-    // methods
-    bool CreateCurlHandle(bool only_pool = false, bool remake = false);
-    bool DestroyCurlHandle(bool restore_pool = true, bool clear_internal_data = true);
+    public:
+        // class methods
+        static bool InitS3fsCurl();
+        static bool InitCredentialObject(S3fsCred* pcredobj);
+        static bool InitMimeType(const std::string& strFile);
+        static bool DestroyS3fsCurl();
+        static std::unique_ptr<S3fsCurl> CreateParallelS3fsCurl(const char* tpath, int fd, off_t start, off_t size, int part_num, bool is_copy, etagpair* petag, const std::string& upload_id, int& result);
+        static int ParallelMultipartUploadRequest(const char* tpath, headers_t& meta, int fd);
+        static int ParallelMixMultipartUploadRequest(const char* tpath, headers_t& meta, int fd, const fdpage_list_t& mixuppages);
+        static int ParallelGetObjectRequest(const char* tpath, int fd, off_t start, off_t size);
 
-    bool LoadIAMRoleFromMetaData(void);
-    bool AddSseRequestHead(sse_type_t ssetype, std::string& ssevalue, bool is_only_c, bool is_copy);
-    bool GetResponseCode(long& responseCode, bool from_curl_handle = true);
-    int RequestPerform(bool dontAddAuthHeaders=false);
-    int DeleteRequest(const char* tpath);
-    bool PreHeadRequest(const char* tpath, const char* bpath = NULL, const char* savedpath = NULL, int ssekey_pos = -1);
-    bool PreHeadRequest(std::string& tpath, std::string& bpath, std::string& savedpath, int ssekey_pos = -1) {
-      return PreHeadRequest(tpath.c_str(), bpath.c_str(), savedpath.c_str(), ssekey_pos);
-    }
-    int HeadRequest(const char* tpath, headers_t& meta);
-    int PutHeadRequest(const char* tpath, headers_t& meta, bool is_copy);
-    int PutRequest(const char* tpath, headers_t& meta, int fd);
-    int PreGetObjectRequest(const char* tpath, int fd, off_t start, ssize_t size, sse_type_t ssetype, std::string& ssevalue);
-    int GetObjectRequest(const char* tpath, int fd, off_t start = -1, ssize_t size = -1);
-    int CheckBucket(void);
-    int ListBucketRequest(const char* tpath, const char* query);
-    int PreMultipartPostRequest(const char* tpath, headers_t& meta, std::string& upload_id, bool is_copy);
-    int CompleteMultipartPostRequest(const char* tpath, const std::string& upload_id, etaglist_t& parts);
-    int UploadMultipartPostRequest(const char* tpath, int part_num, const std::string& upload_id);
-    int MultipartListRequest(std::string& body);
-    int AbortMultipartUpload(const char* tpath, const std::string& upload_id);
-    int MultipartHeadRequest(const char* tpath, off_t size, headers_t& meta, bool is_copy);
-    int MultipartUploadRequest(const char* tpath, headers_t& meta, int fd, bool is_copy);
-    int MultipartUploadRequest(const std::string& upload_id, const char* tpath, int fd, off_t offset, off_t size, etaglist_t& list);
-    int MultipartRenameRequest(const char* from, const char* to, headers_t& meta, off_t size);
+        // lazy functions for set curl options(public)
+        static bool UploadMultipartPostSetCurlOpts(S3fsCurl* s3fscurl);
 
-    // methods(variables)
-    CURL* GetCurlHandle(void) const { return hCurl; }
-    std::string GetPath(void) const { return path; }
-    std::string GetBasePath(void) const { return base_path; }
-    std::string GetSpacialSavedPath(void) const { return saved_path; }
-    std::string GetUrl(void) const { return url; }
-    std::string GetOp(void) const { return op; }
-    headers_t* GetResponseHeaders(void) { return &responseHeaders; }
-    BodyData* GetBodyData(void) { return &bodydata; }
-    BodyData* GetHeadData(void) { return &headdata; }
-    long GetLastResponseCode(void) const { return LastResponseCode; }
-    bool SetUseAhbe(bool ahbe);
-    bool EnableUseAhbe(void) { return SetUseAhbe(true); }
-    bool DisableUseAhbe(void) { return SetUseAhbe(false); }
-    bool IsUseAhbe(void) const { return is_use_ahbe; }
-    int GetMultipartRetryCount(void) const { return retry_count; }
-    void SetMultipartRetryCount(int retrycnt) { retry_count = retrycnt; }
-    bool IsOverMultipartRetryCount(void) const { return (retry_count >= S3fsCurl::retries); }
-    int GetLastPreHeadSeecKeyPos(void) const { return b_ssekey_pos; }
+        // class methods(variables)
+        static std::string LookupMimeType(const std::string& name);
+        static bool SetCheckCertificate(bool isCertCheck);
+        static bool SetDnsCache(bool isCache);
+        static bool SetSslSessionCache(bool isCache);
+        static long SetConnectTimeout(long timeout);
+        static time_t SetReadwriteTimeout(time_t timeout);
+        static time_t GetReadwriteTimeout() { return S3fsCurl::readwrite_timeout; }
+        static int SetRetries(int count);
+        static bool SetPublicBucket(bool flag);
+        static bool IsPublicBucket() { return S3fsCurl::is_public_bucket; }
+        static acl_t SetDefaultAcl(acl_t acl);
+        static acl_t GetDefaultAcl();
+        static std::string SetStorageClass(const std::string& storage_class);
+        static std::string GetStorageClass() { return S3fsCurl::storage_class; }
+        static bool LoadEnvSse() { return (S3fsCurl::LoadEnvSseCKeys() && S3fsCurl::LoadEnvSseKmsid()); }
+        static sse_type_t SetSseType(sse_type_t type);
+        static sse_type_t GetSseType() { return S3fsCurl::ssetype; }
+        static bool IsSseDisable() { return (sse_type_t::SSE_DISABLE == S3fsCurl::ssetype); }
+        static bool IsSseS3Type() { return (sse_type_t::SSE_S3 == S3fsCurl::ssetype); }
+        static bool IsSseCType() { return (sse_type_t::SSE_C == S3fsCurl::ssetype); }
+        static bool IsSseKmsType() { return (sse_type_t::SSE_KMS == S3fsCurl::ssetype); }
+        static bool FinalCheckSse();
+        static bool SetSseCKeys(const char* filepath);
+        static bool SetSseKmsid(const char* kmsid);
+        static bool IsSetSseKmsId() { return !S3fsCurl::ssekmsid.empty(); }
+        static const char* GetSseKmsId() { return S3fsCurl::ssekmsid.c_str(); }
+        static bool GetSseKey(std::string& md5, std::string& ssekey);
+        static bool GetSseKeyMd5(size_t pos, std::string& md5);
+        static size_t GetSseKeyCount();
+        static bool SetContentMd5(bool flag);
+        static bool SetVerbose(bool flag);
+        static bool GetVerbose() { return S3fsCurl::is_verbose; }
+        static bool SetDumpBody(bool flag);
+        static bool IsDumpBody() { return S3fsCurl::is_dump_body; }
+        static long SetSslVerifyHostname(long value);
+        static long GetSslVerifyHostname() { return S3fsCurl::ssl_verify_hostname; }
+        static bool SetSSLClientCertOptions(const std::string& values);
+        static void ResetOffset(S3fsCurl* pCurl);
+        // maximum parallel GET and PUT requests
+        static int SetMaxParallelCount(int value);
+        static int GetMaxParallelCount() { return S3fsCurl::max_parallel_cnt; }
+        // maximum parallel HEAD requests
+        static int SetMaxMultiRequest(int max);
+        static int GetMaxMultiRequest() { return S3fsCurl::max_multireq; }
+        static bool SetMultipartSize(off_t size);
+        static off_t GetMultipartSize() { return S3fsCurl::multipart_size; }
+        static bool SetMultipartCopySize(off_t size);
+        static off_t GetMultipartCopySize() { return S3fsCurl::multipart_copy_size; }
+        static signature_type_t SetSignatureType(signature_type_t signature_type) { signature_type_t bresult = S3fsCurl::signature_type; S3fsCurl::signature_type = signature_type; return bresult; }
+        static signature_type_t GetSignatureType() { return S3fsCurl::signature_type; }
+        static bool SetUnsignedPayload(bool issset) { bool bresult = S3fsCurl::is_unsigned_payload; S3fsCurl::is_unsigned_payload = issset; return bresult; }
+        static bool GetUnsignedPayload() { return S3fsCurl::is_unsigned_payload; }
+        static bool SetUserAgentFlag(bool isset) { bool bresult = S3fsCurl::is_ua; S3fsCurl::is_ua = isset; return bresult; }
+        static bool IsUserAgentFlag() { return S3fsCurl::is_ua; }
+        static void InitUserAgent();
+        static bool SetListObjectsV2(bool isset) { bool bresult = S3fsCurl::listobjectsv2; S3fsCurl::listobjectsv2 = isset; return bresult; }
+        static bool IsListObjectsV2() { return S3fsCurl::listobjectsv2; }
+        static bool SetRequesterPays(bool flag) { bool old_flag = S3fsCurl::requester_pays; S3fsCurl::requester_pays = flag; return old_flag; }
+        static bool IsRequesterPays() { return S3fsCurl::requester_pays; }
+        static bool SetProxy(const char* url);
+        static bool SetProxyUserPwd(const char* userpwd);
+        static bool SetIPResolveType(const char* value);
+
+        // methods
+        bool CreateCurlHandle(bool only_pool = false, bool remake = false);
+        bool DestroyCurlHandle(bool restore_pool = true, bool clear_internal_data = true);
+        bool DestroyCurlHandleHasLock(bool restore_pool = true, bool clear_internal_data = true) REQUIRES(S3fsCurl::curl_handles_lock);
+
+        bool GetIAMCredentials(const char* cred_url, const char* iam_v2_token, const char* ibm_secret_access_key, std::string& response);
+        bool GetIAMRoleFromMetaData(const char* cred_url, const char* iam_v2_token, std::string& token);
+        bool GetResponseCode(long& responseCode, bool from_curl_handle = true) const;
+        int RequestPerform(bool dontAddAuthHeaders=false);
+        int DeleteRequest(const char* tpath);
+        int GetIAMv2ApiToken(const char* token_url, int token_ttl, const char* token_ttl_hdr, std::string& response);
+        bool PreHeadRequest(const char* tpath, const char* bpath = nullptr, const char* savedpath = nullptr, size_t ssekey_pos = -1);
+        bool PreHeadRequest(const std::string& tpath, const std::string& bpath, const std::string& savedpath, size_t ssekey_pos = -1) {
+          return PreHeadRequest(tpath.c_str(), bpath.c_str(), savedpath.c_str(), ssekey_pos);
+        }
+        int HeadRequest(const char* tpath, headers_t& meta);
+        int PutHeadRequest(const char* tpath, headers_t& meta, bool is_copy);
+        int PutRequest(const char* tpath, headers_t& meta, int fd);
+        int PreGetObjectRequest(const char* tpath, int fd, off_t start, off_t size, sse_type_t ssetype, const std::string& ssevalue);
+        int GetObjectRequest(const char* tpath, int fd, off_t start = -1, off_t size = -1);
+        int CheckBucket(const char* check_path, bool compat_dir, bool force_no_sse);
+        int ListBucketRequest(const char* tpath, const char* query);
+        int PreMultipartPostRequest(const char* tpath, headers_t& meta, std::string& upload_id);
+        int CompleteMultipartPostRequest(const char* tpath, const std::string& upload_id, const etaglist_t& parts);
+        int UploadMultipartPostRequest(const char* tpath, int part_num, const std::string& upload_id);
+        bool MixMultipartPostComplete();
+        int MultipartListRequest(std::string& body);
+        int AbortMultipartUpload(const char* tpath, const std::string& upload_id);
+        int MultipartHeadRequest(const char* tpath, off_t size, headers_t& meta);
+        int MultipartUploadRequest(const std::string& upload_id, const char* tpath, int fd, off_t offset, off_t size, etagpair* petagpair);
+        int MultipartRenameRequest(const char* from, const char* to, headers_t& meta, off_t size);
+
+        // methods(variables)
+        const std::string& GetPath() const { return path; }
+        const std::string& GetBasePath() const { return base_path; }
+        const std::string& GetSpecialSavedPath() const { return saved_path; }
+        const std::string& GetUrl() const { return url; }
+        const std::string& GetOp() const { return op; }
+        const headers_t* GetResponseHeaders() const { return &responseHeaders; }
+        const std::string& GetBodyData() const { return bodydata; }
+        const std::string& GetHeadData() const { return headdata; }
+        CURLcode GetCurlCode() const { return curlCode; }
+        long GetLastResponseCode() const { return LastResponseCode; }
+        bool SetUseAhbe(bool ahbe);
+        bool EnableUseAhbe() { return SetUseAhbe(true); }
+        bool DisableUseAhbe() { return SetUseAhbe(false); }
+        bool IsUseAhbe() const { return is_use_ahbe; }
+        int GetMultipartRetryCount() const { return retry_count; }
+        void SetMultipartRetryCount(int retrycnt) { retry_count = retrycnt; }
+        bool IsOverMultipartRetryCount() const { return (retry_count >= S3fsCurl::retries); }
+        size_t GetLastPreHeadSeecKeyPos() const { return b_ssekey_pos; }
 };
 
-//----------------------------------------------
-// class S3fsMultiCurl
-//----------------------------------------------
-// Class for lapping multi curl
-//
-typedef std::vector<S3fsCurl*>       s3fscurllist_t;
-typedef bool (*S3fsMultiSuccessCallback)(S3fsCurl* s3fscurl);    // callback for succeed multi request
-typedef S3fsCurl* (*S3fsMultiRetryCallback)(S3fsCurl* s3fscurl); // callback for failure and retrying
-
-class S3fsMultiCurl
-{
-  private:
-    const int maxParallelism;
-
-    s3fscurllist_t clist_all;  // all of curl requests
-    s3fscurllist_t clist_req;  // curl requests are sent
-
-    S3fsMultiSuccessCallback SuccessCallback;
-    S3fsMultiRetryCallback   RetryCallback;
-
-    pthread_mutex_t completed_tids_lock;
-    std::vector<pthread_t> completed_tids;
-
-  private:
-    bool ClearEx(bool is_all);
-    int MultiPerform(void);
-    int MultiRead(void);
-
-    static void* RequestPerformWrapper(void* arg);
-
-  public:
-    explicit S3fsMultiCurl(int maxParallelism);
-    ~S3fsMultiCurl();
-
-    int GetMaxParallelism() { return maxParallelism; }
-
-    S3fsMultiSuccessCallback SetSuccessCallback(S3fsMultiSuccessCallback function);
-    S3fsMultiRetryCallback SetRetryCallback(S3fsMultiRetryCallback function);
-    bool Clear(void) { return ClearEx(true); }
-    bool SetS3fsCurlObject(S3fsCurl* s3fscurl);
-    int Request(void);
-};
-
-//----------------------------------------------
-// Utility Functions
-//----------------------------------------------
-std::string GetContentMD5(int fd);
-unsigned char* md5hexsum(int fd, off_t start, ssize_t size);
-std::string md5sum(int fd, off_t start, ssize_t size);
-struct curl_slist* curl_slist_sort_insert(struct curl_slist* list, const char* data);
-struct curl_slist* curl_slist_sort_insert(struct curl_slist* list, const char* key, const char* value);
-std::string get_sorted_header_keys(const struct curl_slist* list);
-std::string get_canonical_headers(const struct curl_slist* list, bool only_amz = false);
-std::string get_header_value(const struct curl_slist* list, const std::string &key);
-bool MakeUrlResource(const char* realpath, std::string& resourcepath, std::string& url);
-std::string prepare_url(const char* url);
-bool get_object_sse_type(const char* path, sse_type_t& ssetype, std::string& ssevalue);   // implement in s3fs.cpp
-const char *acl_to_string(acl_t acl);
-acl_t string_to_acl(const char *acl);
-
 #endif // S3FS_CURL_H_
 
 /*
@@ -600,6 +422,6 @@ acl_t string_to_acl(const char *acl);
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/curl_handlerpool.cpp

@@ -0,0 +1,113 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <utility>
+
+#include "s3fs_logger.h"
+#include "curl_handlerpool.h"
+
+//-------------------------------------------------------------------
+// Class CurlHandlerPool
+//-------------------------------------------------------------------
+bool CurlHandlerPool::Init()
+{
+    for(int cnt = 0; cnt < mMaxHandlers; ++cnt){
+        CurlUniquePtr hCurl(curl_easy_init(), &curl_easy_cleanup);
+        if(!hCurl){
+            S3FS_PRN_ERR("Init curl handlers pool failed");
+            Destroy();
+            return false;
+        }
+        const std::lock_guard<std::mutex> lock(mLock);
+        mPool.push_back(std::move(hCurl));
+    }
+    return true;
+}
+
+bool CurlHandlerPool::Destroy()
+{
+    const std::lock_guard<std::mutex> lock(mLock);
+
+    while(!mPool.empty()){
+        mPool.pop_back();
+    }
+    return true;
+}
+
+CurlUniquePtr CurlHandlerPool::GetHandler(bool only_pool)
+{
+    const std::lock_guard<std::mutex> lock(mLock);
+
+    CurlUniquePtr hCurl(nullptr, curl_easy_cleanup);
+
+    if(!mPool.empty()){
+        hCurl = std::move(mPool.back());
+        mPool.pop_back();
+        S3FS_PRN_DBG("Get handler from pool: rest = %d", static_cast<int>(mPool.size()));
+    }
+    if(only_pool){
+        return hCurl;
+    }
+    if(!hCurl){
+        S3FS_PRN_INFO("Pool empty: force to create new handler");
+        hCurl.reset(curl_easy_init());
+    }
+    return hCurl;
+}
+
+void CurlHandlerPool::ReturnHandler(CurlUniquePtr&& hCurl, bool restore_pool)
+{
+    if(!hCurl){
+      return;
+    }
+    const std::lock_guard<std::mutex> lock(mLock);
+
+    if(restore_pool){
+        S3FS_PRN_DBG("Return handler to pool");
+        mPool.push_back(std::move(hCurl));
+
+        while(mMaxHandlers < static_cast<int>(mPool.size())){
+            S3FS_PRN_INFO("Pool full: destroy the oldest handler");
+            mPool.pop_front();
+        }
+    }else{
+        S3FS_PRN_INFO("Pool full: destroy the handler");
+    }
+}
+
+void CurlHandlerPool::ResetHandler(CURL* hCurl)
+{
+    if(!hCurl){
+      return;
+    }
+    const std::lock_guard<std::mutex> lock(mLock);
+
+    curl_easy_reset(hCurl);
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/curl_handlerpool.h

@@ -0,0 +1,74 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_CURL_HANDLERPOOL_H_
+#define S3FS_CURL_HANDLERPOOL_H_
+
+#include <cassert>
+#include <curl/curl.h>
+#include <list>
+#include <memory>
+#include <mutex>
+
+#include "common.h"
+
+//----------------------------------------------
+// Typedefs
+//----------------------------------------------
+typedef std::unique_ptr<CURL, decltype(&curl_easy_cleanup)> CurlUniquePtr;
+
+//----------------------------------------------
+// class CurlHandlerPool
+//----------------------------------------------
+class CurlHandlerPool
+{
+    public:
+        explicit CurlHandlerPool(int maxHandlers) : mMaxHandlers(maxHandlers)
+        {
+            assert(maxHandlers > 0);
+        }
+        CurlHandlerPool(const CurlHandlerPool&) = delete;
+        CurlHandlerPool(CurlHandlerPool&&) = delete;
+        CurlHandlerPool& operator=(const CurlHandlerPool&) = delete;
+        CurlHandlerPool& operator=(CurlHandlerPool&&) = delete;
+
+        bool Init();
+        bool Destroy();
+
+        CurlUniquePtr GetHandler(bool only_pool);
+        void ReturnHandler(CurlUniquePtr&& hCurl, bool restore_pool);
+        void ResetHandler(CURL* hCurl);
+
+    private:
+        int             mMaxHandlers;
+        std::mutex      mLock;
+        std::list<CurlUniquePtr> mPool GUARDED_BY(mLock);
+};
+
+#endif // S3FS_CURL_HANDLERPOOL_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/curl_multi.cpp

@@ -0,0 +1,369 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+#include <cerrno>
+#include <future>
+#include <thread>
+#include <utility>
+#include <vector>
+
+#include "s3fs.h"
+#include "s3fs_logger.h"
+#include "curl_multi.h"
+#include "curl.h"
+#include "psemaphore.h"
+
+//-------------------------------------------------------------------
+// Class S3fsMultiCurl 
+//-------------------------------------------------------------------
+S3fsMultiCurl::S3fsMultiCurl(int maxParallelism, bool not_abort) : maxParallelism(maxParallelism), not_abort(not_abort), SuccessCallback(nullptr), NotFoundCallback(nullptr), RetryCallback(nullptr), pSuccessCallbackParam(nullptr), pNotFoundCallbackParam(nullptr)
+{
+}
+
+S3fsMultiCurl::~S3fsMultiCurl()
+{
+    Clear();
+}
+
+bool S3fsMultiCurl::ClearEx(bool is_all)
+{
+    s3fscurllist_t::const_iterator iter;
+    for(iter = clist_req.cbegin(); iter != clist_req.cend(); ++iter){
+        S3fsCurl* s3fscurl = iter->get();
+        if(s3fscurl){
+            s3fscurl->DestroyCurlHandle();
+        }
+    }
+    clist_req.clear();
+
+    if(is_all){
+        for(iter = clist_all.cbegin(); iter != clist_all.cend(); ++iter){
+            S3fsCurl* s3fscurl = iter->get();
+            s3fscurl->DestroyCurlHandle();
+        }
+        clist_all.clear();
+    }
+
+    S3FS_MALLOCTRIM(0);
+
+    return true;
+}
+
+S3fsMultiSuccessCallback S3fsMultiCurl::SetSuccessCallback(S3fsMultiSuccessCallback function)
+{
+    S3fsMultiSuccessCallback old = SuccessCallback;
+    SuccessCallback = function;
+    return old;
+}
+
+S3fsMultiNotFoundCallback S3fsMultiCurl::SetNotFoundCallback(S3fsMultiNotFoundCallback function)
+{
+    S3fsMultiNotFoundCallback old = NotFoundCallback;
+    NotFoundCallback = function;
+    return old;
+}
+
+S3fsMultiRetryCallback S3fsMultiCurl::SetRetryCallback(S3fsMultiRetryCallback function)
+{
+    S3fsMultiRetryCallback old = RetryCallback;
+    RetryCallback = function;
+    return old;
+}
+
+void* S3fsMultiCurl::SetSuccessCallbackParam(void* param)
+{
+    void* old = pSuccessCallbackParam;
+    pSuccessCallbackParam = param;
+    return old;
+}
+
+void* S3fsMultiCurl::SetNotFoundCallbackParam(void* param)
+{
+    void* old = pNotFoundCallbackParam;
+    pNotFoundCallbackParam = param;
+    return old;
+}
+
+bool S3fsMultiCurl::SetS3fsCurlObject(std::unique_ptr<S3fsCurl> s3fscurl)
+{
+    if(!s3fscurl){
+        return false;
+    }
+    clist_all.push_back(std::move(s3fscurl));
+
+    return true;
+}
+
+int S3fsMultiCurl::MultiPerform()
+{
+    std::map<std::thread::id, std::pair<std::thread, std::future<int>>> threads;
+    int                      result = 0;
+    bool                     isMultiHead = false;
+    Semaphore                sem(GetMaxParallelism());
+
+    for(auto iter = clist_req.cbegin(); iter != clist_req.cend(); ++iter) {
+        S3fsCurl*   s3fscurl = iter->get();
+        if(!s3fscurl){
+            continue;
+        }
+
+        sem.wait();
+
+        {
+            const std::lock_guard<std::mutex> lock(completed_tids_lock);
+            for(const auto &thread_id : completed_tids){
+                auto it = threads.find(thread_id);
+                it->second.first.join();
+                long int int_retval = it->second.second.get();
+                if (int_retval && !(int_retval == -ENOENT && isMultiHead)) {
+                    S3FS_PRN_WARN("thread terminated with non-zero return code: %ld", int_retval);
+                }
+                threads.erase(it);
+            }
+            completed_tids.clear();
+        }
+        s3fscurl->sem = &sem;
+        s3fscurl->completed_tids_lock = &completed_tids_lock;
+        s3fscurl->completed_tids = &completed_tids;
+
+        isMultiHead |= s3fscurl->GetOp() == "HEAD";
+
+        std::promise<int> promise;
+        std::future<int> future = promise.get_future();
+        std::thread thread(S3fsMultiCurl::RequestPerformWrapper, s3fscurl, std::move(promise));
+        auto thread_id = thread.get_id();
+        threads.emplace(std::piecewise_construct, std::forward_as_tuple(thread_id), std::forward_as_tuple(std::move(thread), std::move(future)));
+    }
+
+    for(int i = 0; i < sem.get_value(); ++i){
+        sem.wait();
+    }
+
+    const std::lock_guard<std::mutex> lock(completed_tids_lock);
+    for(const auto &thread_id : completed_tids){
+        auto it = threads.find(thread_id);
+        it->second.first.join();
+        auto int_retval = it->second.second.get();
+        if (int_retval && !(int_retval == -ENOENT && isMultiHead)) {
+            S3FS_PRN_WARN("thread terminated with non-zero return code: %d", int_retval);
+            result = int_retval;
+        }
+        threads.erase(it);
+    }
+    completed_tids.clear();
+
+    return result;
+}
+
+int S3fsMultiCurl::MultiRead()
+{
+    int result = 0;
+
+    for(auto iter = clist_req.begin(); iter != clist_req.end(); ){
+        std::unique_ptr<S3fsCurl> s3fscurl(std::move(*iter));
+
+        bool isRetry = false;
+        bool isPostpone = false;
+        bool isNeedResetOffset = true;
+        long responseCode = S3fsCurl::S3FSCURL_RESPONSECODE_NOTSET;
+        CURLcode curlCode = s3fscurl->GetCurlCode();
+
+        if(s3fscurl->GetResponseCode(responseCode, false) && curlCode == CURLE_OK){
+            if(S3fsCurl::S3FSCURL_RESPONSECODE_NOTSET == responseCode){
+                // This is a case where the processing result has not yet been updated (should be very rare).
+                isPostpone = true;
+            }else if(400 > responseCode){
+                // add into stat cache
+                // cppcheck-suppress unmatchedSuppression
+                // cppcheck-suppress knownPointerToBool
+                if(SuccessCallback && !SuccessCallback(s3fscurl.get(), pSuccessCallbackParam)){
+                    S3FS_PRN_WARN("error from success callback function(%s).", s3fscurl->url.c_str());
+                }
+            }else if(400 == responseCode){
+                // as possibly in multipart
+                S3FS_PRN_WARN("failed a request(%ld: %s)", responseCode, s3fscurl->url.c_str());
+                isRetry = true;
+            }else if(404 == responseCode){
+                // not found
+                // HEAD requests on readdir_multi_head can return 404
+                if(s3fscurl->GetOp() != "HEAD"){
+                    S3FS_PRN_WARN("failed a request(%ld: %s)", responseCode, s3fscurl->url.c_str());
+                }
+				// Call callback function
+                // cppcheck-suppress unmatchedSuppression
+                // cppcheck-suppress knownPointerToBool
+                if(NotFoundCallback && !NotFoundCallback(s3fscurl.get(), pNotFoundCallbackParam)){
+                    S3FS_PRN_WARN("error from not found callback function(%s).", s3fscurl->url.c_str());
+                }
+            }else if(500 == responseCode){
+                // case of all other result, do retry.(11/13/2013)
+                // because it was found that s3fs got 500 error from S3, but could success
+                // to retry it.
+                S3FS_PRN_WARN("failed a request(%ld: %s)", responseCode, s3fscurl->url.c_str());
+                isRetry = true;
+            }else{
+                // Retry in other case.
+                S3FS_PRN_WARN("failed a request(%ld: %s)", responseCode, s3fscurl->url.c_str());
+                isRetry = true;
+            }
+        }else{
+            S3FS_PRN_ERR("failed a request(Unknown response code: %s)", s3fscurl->url.c_str());
+            // Reuse particular file
+            switch(curlCode){
+                case CURLE_OPERATION_TIMEDOUT:
+                    isRetry = true;
+                    isNeedResetOffset = false;
+                    break; 
+
+                case CURLE_PARTIAL_FILE:
+                    isRetry = true;
+                    isNeedResetOffset = false;
+                    break; 
+
+                default:
+                    S3FS_PRN_ERR("###curlCode: %d  msg: %s", curlCode, curl_easy_strerror(curlCode));
+                    isRetry = true;
+                    break;
+            }
+        }
+
+        if(isPostpone){
+            clist_req.erase(iter);
+            clist_req.push_back(std::move(s3fscurl));    // Re-evaluate at the end
+            iter = clist_req.begin();
+        }else{
+            if(!isRetry || (!not_abort && 0 != result)){
+                // If an EIO error has already occurred, it will be terminated
+                // immediately even if retry processing is required. 
+                s3fscurl->DestroyCurlHandle();
+            }else{
+                // Reset offset
+                if(isNeedResetOffset){
+                    S3fsCurl::ResetOffset(s3fscurl.get());
+                }
+
+                // For retry
+                std::unique_ptr<S3fsCurl> retrycurl;
+                const S3fsCurl* retrycurl_ptr = retrycurl.get();  // save this due to std::move below
+                if(RetryCallback){
+                    retrycurl = RetryCallback(s3fscurl.get());
+                    if(nullptr != retrycurl){
+                        clist_all.push_back(std::move(retrycurl));
+                    }else{
+                        // set EIO and wait for other parts.
+                        result = -EIO;
+                    }
+                }
+                // cppcheck-suppress mismatchingContainers
+                if(s3fscurl.get() != retrycurl_ptr){
+                    s3fscurl->DestroyCurlHandle();
+                }
+            }
+            iter = clist_req.erase(iter);
+        }
+    }
+    clist_req.clear();
+
+    if(!not_abort && 0 != result){
+        // If an EIO error has already occurred, clear all retry objects.
+        for(auto iter = clist_all.cbegin(); iter != clist_all.cend(); ++iter){
+            S3fsCurl* s3fscurl = iter->get();
+            s3fscurl->DestroyCurlHandle();
+        }
+        clist_all.clear();
+    }
+    return result;
+}
+
+int S3fsMultiCurl::Request()
+{
+    S3FS_PRN_INFO3("[count=%zu]", clist_all.size());
+
+    // Make request list.
+    //
+    // Send multi request loop( with retry )
+    // (When many request is sends, sometimes gets "Couldn't connect to server")
+    //
+    while(!clist_all.empty()){
+        // set curl handle to multi handle
+        int                      result;
+        for(auto iter = clist_all.begin(); iter != clist_all.end(); ++iter){
+            clist_req.push_back(std::move(*iter));
+        }
+        clist_all.clear();
+
+        // Send multi request.
+        if(0 != (result = MultiPerform())){
+            Clear();
+            return result;
+        }
+
+        // Read the result
+        if(0 != (result = MultiRead())){
+            Clear();
+            return result;
+        }
+
+        // Cleanup curl handle in multi handle
+        ClearEx(false);
+    }
+    return 0;
+}
+
+//
+// thread function for performing an S3fsCurl request
+//
+void S3fsMultiCurl::RequestPerformWrapper(S3fsCurl* s3fscurl, std::promise<int> promise)
+{
+    int result = 0;
+    if(!s3fscurl){
+        // this doesn't signal completion but also never happens
+        promise.set_value(-EIO);
+        return;
+    }
+    if(s3fscurl->fpLazySetup){
+        if(!s3fscurl->fpLazySetup(s3fscurl)){
+            S3FS_PRN_ERR("Failed to lazy setup, then respond EIO.");
+            result = -EIO;
+        }
+    }
+
+    if(!result){
+        result = s3fscurl->RequestPerform();
+        s3fscurl->DestroyCurlHandle(true, false);
+    }
+
+    const std::lock_guard<std::mutex> lock(*s3fscurl->completed_tids_lock);
+    s3fscurl->completed_tids->push_back(std::this_thread::get_id());
+    s3fscurl->sem->post();
+
+    promise.set_value(result);
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/curl_multi.h

@@ -0,0 +1,99 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_CURL_MULTI_H_
+#define S3FS_CURL_MULTI_H_
+
+#include <future>
+#include <memory>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+#include "common.h"
+
+//----------------------------------------------
+// Typedef
+//----------------------------------------------
+class S3fsCurl;
+
+typedef std::vector<std::unique_ptr<S3fsCurl>> s3fscurllist_t;
+typedef bool (*S3fsMultiSuccessCallback)(S3fsCurl* s3fscurl, void* param);  // callback for succeed multi request
+typedef bool (*S3fsMultiNotFoundCallback)(S3fsCurl* s3fscurl, void* param); // callback for succeed multi request
+typedef std::unique_ptr<S3fsCurl> (*S3fsMultiRetryCallback)(S3fsCurl* s3fscurl);  // callback for failure and retrying
+
+//----------------------------------------------
+// class S3fsMultiCurl
+//----------------------------------------------
+class S3fsMultiCurl
+{
+    private:
+        const int maxParallelism;
+
+        s3fscurllist_t clist_all;  // all of curl requests
+        s3fscurllist_t clist_req;  // curl requests are sent
+        bool           not_abort;  // complete all requests without aborting on errors
+
+        S3fsMultiSuccessCallback   SuccessCallback;
+        S3fsMultiNotFoundCallback  NotFoundCallback;
+        S3fsMultiRetryCallback     RetryCallback;
+        void*                      pSuccessCallbackParam;
+        void*                      pNotFoundCallbackParam;
+
+        std::mutex completed_tids_lock;
+        std::vector<std::thread::id> completed_tids GUARDED_BY(completed_tids_lock);
+
+    private:
+        bool ClearEx(bool is_all);
+        int MultiPerform();
+        int MultiRead();
+
+        static void RequestPerformWrapper(S3fsCurl* s3fscurl, std::promise<int> promise);
+
+    public:
+        explicit S3fsMultiCurl(int maxParallelism, bool not_abort = false);
+        ~S3fsMultiCurl();
+        S3fsMultiCurl(const S3fsMultiCurl&) = delete;
+        S3fsMultiCurl(S3fsMultiCurl&&) = delete;
+        S3fsMultiCurl& operator=(const S3fsMultiCurl&) = delete;
+        S3fsMultiCurl& operator=(S3fsMultiCurl&&) = delete;
+
+        int GetMaxParallelism() const { return maxParallelism; }
+
+        S3fsMultiSuccessCallback SetSuccessCallback(S3fsMultiSuccessCallback function);
+        S3fsMultiNotFoundCallback SetNotFoundCallback(S3fsMultiNotFoundCallback function);
+        S3fsMultiRetryCallback SetRetryCallback(S3fsMultiRetryCallback function);
+        void* SetSuccessCallbackParam(void* param);
+        void* SetNotFoundCallbackParam(void* param);
+        bool Clear() { return ClearEx(true); }
+        bool SetS3fsCurlObject(std::unique_ptr<S3fsCurl> s3fscurl);
+        int Request();
+};
+
+#endif // S3FS_CURL_MULTI_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/curl_util.cpp

@@ -0,0 +1,335 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+#include <curl/curl.h>
+#include <string>
+
+#include "common.h"
+#include "s3fs_logger.h"
+#include "curl_util.h"
+#include "string_util.h"
+#include "s3fs_auth.h"
+#include "s3fs_cred.h"
+
+//-------------------------------------------------------------------
+// Utility Functions
+//-------------------------------------------------------------------
+//
+// curl_slist_sort_insert
+// This function is like curl_slist_append function, but this adds data by a-sorting.
+// Because AWS signature needs sorted header.
+//
+struct curl_slist* curl_slist_sort_insert(struct curl_slist* list, const char* key, const char* value)
+{
+    if(!key){
+        return list;
+    }
+
+    // key & value are trimmed and lower (only key)
+    std::string strkey = trim(key);
+    std::string strval = value ? trim(value) : "";
+    std::string strnew = key + std::string(": ") + strval;
+    char* data;
+    if(nullptr == (data = strdup(strnew.c_str()))){
+        return list;
+    }
+
+    struct curl_slist **p = &list;
+    for(;*p; p = &(*p)->next){
+        std::string strcur = (*p)->data;
+        size_t pos;
+        if(std::string::npos != (pos = strcur.find(':', 0))){
+            strcur.erase(pos);
+        }
+
+        int result = strcasecmp(strkey.c_str(), strcur.c_str());
+        if(0 == result){
+            free((*p)->data);
+            (*p)->data = data;
+            return list;
+        }else if(result < 0){
+            break;
+        }
+    }
+
+    struct curl_slist* new_item;
+    // Must use malloc since curl_slist_free_all calls free.
+    if(nullptr == (new_item = static_cast<struct curl_slist*>(malloc(sizeof(*new_item))))){
+        free(data);
+        return list;
+    }
+
+    struct curl_slist* before = *p;
+    *p = new_item;
+    new_item->data = data;
+    new_item->next = before;
+
+    return list;
+}
+
+struct curl_slist* curl_slist_remove(struct curl_slist* list, const char* key)
+{
+    if(!key){
+        return list;
+    }
+
+    std::string strkey = trim(key);
+    struct curl_slist **p = &list;
+    while(*p){
+        std::string strcur = (*p)->data;
+        size_t pos;
+        if(std::string::npos != (pos = strcur.find(':', 0))){
+            strcur.erase(pos);
+        }
+
+        int result = strcasecmp(strkey.c_str(), strcur.c_str());
+        if(0 == result){
+            free((*p)->data);
+            struct curl_slist *tmp = *p;
+            *p = (*p)->next;
+            free(tmp);
+        }else{
+            p = &(*p)->next;
+        }
+    }
+
+    return list;
+}
+
+std::string get_sorted_header_keys(const struct curl_slist* list)
+{
+    std::string sorted_headers;
+
+    if(!list){
+        return sorted_headers;
+    }
+
+    for( ; list; list = list->next){
+        std::string strkey = list->data;
+        size_t pos;
+        if(std::string::npos != (pos = strkey.find(':', 0))){
+            if (trim(strkey.substr(pos + 1)).empty()) {
+                // skip empty-value headers (as they are discarded by libcurl)
+                continue;
+            }
+            strkey.erase(pos);
+        }
+        if(!sorted_headers.empty()){
+            sorted_headers += ";";
+        }
+        sorted_headers += lower(strkey);
+    }
+
+    return sorted_headers;
+}
+
+std::string get_header_value(const struct curl_slist* list, const std::string &key)
+{
+    if(!list){
+        return "";
+    }
+
+    for( ; list; list = list->next){
+        std::string strkey = list->data;
+        size_t pos;
+        if(std::string::npos != (pos = strkey.find(':', 0))){
+            if(0 == strcasecmp(trim(strkey.substr(0, pos)).c_str(), key.c_str())){
+                return trim(strkey.substr(pos+1));
+            }
+        }
+    }
+
+    return "";
+}
+
+std::string get_canonical_headers(const struct curl_slist* list, bool only_amz)
+{
+    std::string canonical_headers;
+
+    if(!list){
+        canonical_headers = "\n";
+        return canonical_headers;
+    }
+
+    for( ; list; list = list->next){
+        std::string strhead = list->data;
+        size_t pos;
+        if(std::string::npos != (pos = strhead.find(':', 0))){
+            std::string strkey = trim(lower(strhead.substr(0, pos)));
+            std::string strval = trim(strhead.substr(pos + 1));
+            if (strval.empty()) {
+                // skip empty-value headers (as they are discarded by libcurl)
+                continue;
+            }
+            strhead = strkey;
+            strhead += ":";
+            strhead += strval;
+        }else{
+            strhead = trim(lower(strhead));
+        }
+        if(only_amz && strhead.substr(0, 5) != "x-amz"){
+            continue;
+        }
+        canonical_headers += strhead;
+        canonical_headers += "\n";
+    }
+    return canonical_headers;
+}
+
+// function for using global values
+bool MakeUrlResource(const char* realpath, std::string& resourcepath, std::string& url)
+{
+    if(!realpath){
+        return false;
+    }
+    resourcepath = urlEncodePath(service_path + S3fsCred::GetBucket() + realpath);
+    url          = s3host + resourcepath;
+    return true;
+}
+
+std::string prepare_url(const char* url)
+{
+    S3FS_PRN_INFO3("URL is %s", url);
+
+    std::string uri;
+    std::string hostname;
+    std::string path;
+    std::string url_str = url;
+    std::string token = "/" + S3fsCred::GetBucket();
+    size_t bucket_pos;
+    size_t bucket_length = token.size();
+    size_t uri_length = 0;
+
+    if(!strncasecmp(url_str.c_str(), "https://", 8)){
+        uri_length = 8;
+    } else if(!strncasecmp(url_str.c_str(), "http://", 7)) {
+        uri_length = 7;
+    }
+    uri  = url_str.substr(0, uri_length);
+    bucket_pos = url_str.find(token, uri_length);
+
+    if(!pathrequeststyle){
+        hostname = S3fsCred::GetBucket() + "." + url_str.substr(uri_length, bucket_pos - uri_length);
+        path = url_str.substr((bucket_pos + bucket_length));
+    }else{
+        hostname = url_str.substr(uri_length, bucket_pos - uri_length);
+        std::string part = url_str.substr((bucket_pos + bucket_length));
+        if('/' != part[0]){
+            part = "/" + part;
+        }
+        path = "/" + S3fsCred::GetBucket() + part;
+    }
+
+    url_str = uri + hostname + path;
+
+    S3FS_PRN_INFO3("URL changed is %s", url_str.c_str());
+
+    return url_str;
+}
+
+bool make_md5_from_binary(const char* pstr, size_t length, std::string& md5)
+{
+    if(!pstr || '\0' == pstr[0]){
+        S3FS_PRN_ERR("Parameter is wrong.");
+        return false;
+    }
+    md5_t binary;
+    if(!s3fs_md5(reinterpret_cast<const unsigned char*>(pstr), length, &binary)){
+        return false;
+    }
+
+    md5 = s3fs_base64(binary.data(), binary.size());
+    return true;
+}
+
+std::string url_to_host(const std::string &url)
+{
+    S3FS_PRN_INFO3("url is %s", url.c_str());
+
+    static constexpr char HTTP[] = "http://";
+    static constexpr char HTTPS[] = "https://";
+    std::string hostname;
+
+    if (is_prefix(url.c_str(), HTTP)) {
+        hostname = url.substr(sizeof(HTTP) - 1);
+    } else if (is_prefix(url.c_str(), HTTPS)) {
+        hostname = url.substr(sizeof(HTTPS) - 1);
+    } else {
+        S3FS_PRN_EXIT("url does not begin with http:// or https://");
+        abort();
+    }
+
+    size_t idx;
+    if ((idx = hostname.find('/')) != std::string::npos) {
+        return hostname.substr(0, idx);
+    } else {
+        return hostname;
+    }
+}
+
+std::string get_bucket_host()
+{
+    if(!pathrequeststyle){
+        return S3fsCred::GetBucket() + "." + url_to_host(s3host);
+    }
+    return url_to_host(s3host);
+}
+
+const char* getCurlDebugHead(curl_infotype type)
+{
+    const char* unknown = "";
+    const char* dataIn  = "BODY <";
+    const char* dataOut = "BODY >";
+    const char* headIn  = "<";
+    const char* headOut = ">";
+
+    switch(type){
+        case CURLINFO_DATA_IN:
+            return dataIn;
+        case CURLINFO_DATA_OUT:
+            return dataOut;
+        case CURLINFO_HEADER_IN:
+            return headIn;
+        case CURLINFO_HEADER_OUT:
+            return headOut;
+        default:
+            break;
+    }
+    return unknown;
+}
+
+//
+// compare ETag ignoring quotes and case
+//
+bool etag_equals(const std::string& s1, const std::string& s2)
+{
+    return 0 == strcasecmp(peeloff(s1).c_str(), peeloff(s2).c_str());
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/curl_util.h

@@ -0,0 +1,58 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_CURL_UTIL_H_
+#define S3FS_CURL_UTIL_H_
+
+#include <cstdint>
+#include <curl/curl.h>
+#include <string>
+
+enum class sse_type_t : uint8_t;
+
+//----------------------------------------------
+// Functions
+//----------------------------------------------
+struct curl_slist* curl_slist_sort_insert(struct curl_slist* list, const char* key, const char* value);
+struct curl_slist* curl_slist_remove(struct curl_slist* list, const char* key);
+std::string get_sorted_header_keys(const struct curl_slist* list);
+std::string get_canonical_headers(const struct curl_slist* list, bool only_amz = false);
+std::string get_header_value(const struct curl_slist* list, const std::string &key);
+bool MakeUrlResource(const char* realpath, std::string& resourcepath, std::string& url);
+std::string prepare_url(const char* url);
+bool get_object_sse_type(const char* path, sse_type_t& ssetype, std::string& ssevalue);   // implement in s3fs.cpp
+
+bool make_md5_from_binary(const char* pstr, size_t length, std::string& md5);
+std::string url_to_host(const std::string &url);
+std::string get_bucket_host();
+const char* getCurlDebugHead(curl_infotype type);
+
+bool etag_equals(const std::string& s1, const std::string& s2);
+
+#endif // S3FS_CURL_UTIL_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache.h

@@ -17,190 +17,16 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
-#ifndef FD_CACHE_H_
-#define FD_CACHE_H_
 
-#include <sys/statvfs.h>
-#include "curl.h"
+#ifndef S3FS_FDCACHE_H_
+#define S3FS_FDCACHE_H_
 
-//------------------------------------------------
-// CacheFileStat
-//------------------------------------------------
-class CacheFileStat
-{
-  private:
-    std::string path;
-    int         fd;
+#include <mutex>
+#include <string>
 
-  private:
-    static bool MakeCacheFileStatPath(const char* path, std::string& sfile_path, bool is_create_dir = true);
-
-  public:
-    static bool DeleteCacheFileStat(const char* path);
-    static bool CheckCacheFileStatTopDir(void);
-    static bool DeleteCacheFileStatDirectory(void);
-    static bool RenameCacheFileStat(const char* oldpath, const char* newpath);
-
-    explicit CacheFileStat(const char* tpath = NULL);
-    ~CacheFileStat();
-
-    bool Open(void);
-    bool Release(void);
-    bool SetPath(const char* tpath, bool is_open = true);
-    int GetFd(void) const { return fd; }
-};
-
-//------------------------------------------------
-// fdpage & PageList
-//------------------------------------------------
-// page block information
-struct fdpage
-{
-  off_t  offset;
-  off_t  bytes;
-  bool   loaded;
-  bool   modified;
-
-  fdpage(off_t start = 0, off_t  size = 0, bool is_loaded = false, bool is_modified = false)
-           : offset(start), bytes(size), loaded(is_loaded), modified(is_modified) {}
-
-  off_t next(void) const { return (offset + bytes); }
-  off_t end(void) const { return (0 < bytes ? offset + bytes - 1 : 0); }
-};
-typedef std::list<struct fdpage> fdpage_list_t;
-
-class FdEntity;
-
-//
-// Management of loading area/modifying
-//
-// cppcheck-suppress copyCtorAndEqOperator
-class PageList
-{
-  friend class FdEntity;    // only one method access directly pages.
-
-  private:
-    fdpage_list_t pages;
-
-  public:
-    enum page_status{
-      PAGE_NOT_LOAD_MODIFIED = 0,
-      PAGE_LOADED,
-      PAGE_MODIFIED,
-      PAGE_LOAD_MODIFIED
-    };
-
-  private:
-    void Clear(void);
-    bool Compress(bool force_modified = false);
-    bool Parse(off_t new_pos);
-    bool RawGetUnloadPageList(fdpage_list_t& dlpages, off_t offset, off_t size);
-
-  public:
-    static void FreeList(fdpage_list_t& list);
-
-    explicit PageList(off_t size = 0, bool is_loaded = false, bool is_modified = false);
-    explicit PageList(const PageList& other);
-    ~PageList();
-
-    bool Init(off_t size, bool is_loaded, bool is_modified);
-    off_t Size(void) const;
-    bool Resize(off_t size, bool is_loaded, bool is_modified);
-
-    bool IsPageLoaded(off_t start = 0, off_t size = 0) const;                  // size=0 is checking to end of list
-    bool SetPageLoadedStatus(off_t start, off_t size, PageList::page_status pstatus = PAGE_LOADED, bool is_compress = true);
-    bool FindUnloadedPage(off_t start, off_t& resstart, off_t& ressize) const;
-    off_t GetTotalUnloadedPageSize(off_t start = 0, off_t size = 0) const;    // size=0 is checking to end of list
-    int GetUnloadedPages(fdpage_list_t& unloaded_list, off_t start = 0, off_t size = 0) const;  // size=0 is checking to end of list
-    bool GetLoadPageListForMultipartUpload(fdpage_list_t& dlpages);
-    bool GetMultipartSizeList(fdpage_list_t& mplist, off_t partsize) const;
-
-    bool IsModified(void) const;
-    bool ClearAllModified(void);
-
-    bool Serialize(CacheFileStat& file, bool is_output);
-    void Dump(void);
-};
-
-//------------------------------------------------
-// class FdEntity
-//------------------------------------------------
-class FdEntity
-{
-  private:
-    static bool     mixmultipart;   // whether multipart uploading can use copy api.
-
-    pthread_mutex_t fdent_lock;
-    bool            is_lock_init;
-    int             refcnt;         // reference count
-    std::string     path;           // object path
-    int             fd;             // file descriptor(tmp file or cache file)
-    FILE*           pfile;          // file pointer(tmp file or cache file)
-    headers_t       orgmeta;        // original headers at opening
-    off_t           size_orgmeta;   // original file size in original headers
-
-    pthread_mutex_t fdent_data_lock;// protects the following members
-    PageList        pagelist;
-    std::string     upload_id;      // for no cached multipart uploading when no disk space
-    etaglist_t      etaglist;       // for no cached multipart uploading when no disk space
-    off_t           mp_start;       // start position for no cached multipart(write method only)
-    off_t           mp_size;        // size for no cached multipart(write method only)
-    std::string     cachepath;      // local cache file path
-                                    // (if this is empty, does not load/save pagelist.)
-    std::string     mirrorpath;     // mirror file path to local cache file path
-
-  private:
-    static int FillFile(int fd, unsigned char byte, off_t size, off_t start);
-
-    void Clear(void);
-    int OpenMirrorFile(void);
-    bool SetAllStatus(bool is_loaded);                          // [NOTE] not locking
-    //bool SetAllStatusLoaded(void) { return SetAllStatus(true); }
-    bool SetAllStatusUnloaded(void) { return SetAllStatus(false); }
-
-  public:
-    static bool SetNoMixMultipart(void);
-
-    explicit FdEntity(const char* tpath = NULL, const char* cpath = NULL);
-    ~FdEntity();
-
-    void Close(void);
-    bool IsOpen(void) const { return (-1 != fd); }
-    int Open(headers_t* pmeta = NULL, off_t size = -1, time_t time = -1, bool no_fd_lock_wait = false);
-    bool OpenAndLoadAll(headers_t* pmeta = NULL, off_t* size = NULL, bool force_load = false);
-    int Dup(bool lock_already_held = false);
-
-    const char* GetPath(void) const { return path.c_str(); }
-    bool RenamePath(const std::string& newpath, std::string& fentmapkey);
-    int GetFd(void) const { return fd; }
-    bool IsModified(void) const { return pagelist.IsModified(); }
-
-    bool GetStats(struct stat& st, bool lock_already_held = false);
-    int SetCtime(time_t time);
-    int SetMtime(time_t time, bool lock_already_held = false);
-    bool UpdateCtime(void);
-    bool UpdateMtime(void);
-    bool GetSize(off_t& size);
-    bool SetMode(mode_t mode);
-    bool SetUId(uid_t uid);
-    bool SetGId(gid_t gid);
-    bool SetContentType(const char* path);
-
-    int Load(off_t start = 0, off_t size = 0, bool lock_already_held = false);  // size=0 means loading to end
-    int NoCacheLoadAndPost(off_t start = 0, off_t size = 0);   // size=0 means loading to end
-    int NoCachePreMultipartPost(void);
-    int NoCacheMultipartPost(int tgfd, off_t start, off_t size);
-    int NoCacheCompleteMultipartPost(void);
-
-    int RowFlush(const char* tpath, bool force_sync = false);
-    int Flush(bool force_sync = false) { return RowFlush(NULL, force_sync); }
-
-    ssize_t Read(char* bytes, off_t start, size_t size, bool force_load = false);
-    ssize_t Write(const char* bytes, off_t start, size_t size);
-
-    bool ReserveDiskSpace(off_t size);
-};
-typedef std::map<std::string, class FdEntity*> fdent_map_t;   // key=path, value=FdEntity*
+#include "common.h"
+#include "fdcache_entity.h"
+#include "s3fs_util.h"
 
 //------------------------------------------------
 // class FdManager
@@ -208,62 +34,101 @@ typedef std::map<std::string, class FdEntity*> fdent_map_t;   // key=path, value
 class FdManager
 {
   private:
-    static FdManager       singleton;
-    static pthread_mutex_t fd_manager_lock;
-    static pthread_mutex_t cache_cleanup_lock;
-    static pthread_mutex_t reserved_diskspace_lock;
-    static bool            is_lock_init;
-    static std::string     cache_dir;
-    static bool            check_cache_dir_exist;
-    static off_t           free_disk_space; // limit free disk space
+      static FdManager       singleton;
+      static std::mutex      fd_manager_lock;
+      static std::mutex      cache_cleanup_lock;
+      static std::mutex      reserved_diskspace_lock;
+      static std::mutex      except_entmap_lock;
+      static std::string     cache_dir;
+      static bool            check_cache_dir_exist;
+      static off_t           free_disk_space GUARDED_BY(reserved_diskspace_lock);  // limit free disk space
+      static off_t           fake_used_disk_space GUARDED_BY(reserved_diskspace_lock);  // difference between fake free disk space and actual at startup(for test/debug)
+      static std::string     check_cache_output;
+      static bool            checked_lseek;
+      static bool            have_lseek_hole;
+      static std::string     tmp_dir;
 
-    fdent_map_t            fent;
+      fdent_map_t            fent GUARDED_BY(fd_manager_lock);
+      fdent_map_t            except_fent GUARDED_BY(except_entmap_lock);  // A map of delayed deletion fdentity
 
   private:
-    static off_t GetFreeDiskSpace(const char* path);
-    void CleanupCacheDirInternal(const std::string &path = "");
+      static off_t GetFreeDiskSpaceHasLock(const char* path) REQUIRES(FdManager::reserved_diskspace_lock);
+      static off_t GetTotalDiskSpace(const char* path);
+      static bool IsDir(const std::string& dir);
+      static int GetVfsStat(const char* path, struct statvfs* vfsbuf);
+      static off_t GetEnsureFreeDiskSpaceHasLock() REQUIRES(FdManager::reserved_diskspace_lock);
+
+      // Returns the number of open pseudo fd.
+      int GetPseudoFdCount(const char* path) REQUIRES(fd_manager_lock);
+      bool UpdateEntityToTempPath() REQUIRES(fd_manager_lock);
+      void CleanupCacheDirInternal(const std::string &path = "") REQUIRES(cache_cleanup_lock);
+      bool RawCheckAllCache(FILE* fp, const char* cache_stat_top_dir, const char* sub_path, int& total_file_cnt, int& err_file_cnt, int& err_dir_cnt);
 
   public:
-    FdManager();
-    ~FdManager();
+      FdManager();
+      ~FdManager();
+      FdManager(const FdManager&) = delete;
+      FdManager(FdManager&&) = delete;
+      FdManager& operator=(const FdManager&) = delete;
+      FdManager& operator=(FdManager&&) = delete;
 
-    // Reference singleton
-    static FdManager* get(void) { return &singleton; }
+      // Reference singleton
+      static FdManager* get() { return &singleton; }
 
-    static bool DeleteCacheDirectory(void);
-    static int DeleteCacheFile(const char* path);
-    static bool SetCacheDir(const char* dir);
-    static bool IsCacheDir(void) { return (0 < FdManager::cache_dir.size()); }
-    static const char* GetCacheDir(void) { return FdManager::cache_dir.c_str(); }
-    static bool MakeCachePath(const char* path, std::string& cache_path, bool is_create_dir = true, bool is_mirror_path = false);
-    static bool CheckCacheTopDir(void);
-    static bool MakeRandomTempPath(const char* path, std::string& tmppath);
-    static bool SetCheckCacheDirExist(bool is_check);
-    static bool CheckCacheDirExist(void);
+      static bool DeleteCacheDirectory();
+      static int DeleteCacheFile(const char* path);
+      static bool SetCacheDir(const char* dir);
+      static bool IsCacheDir() { return !FdManager::cache_dir.empty(); }
+      static const char* GetCacheDir() { return FdManager::cache_dir.c_str(); }
+      static bool SetCacheCheckOutput(const char* path);
+      static const char* GetCacheCheckOutput() { return FdManager::check_cache_output.c_str(); }
+      static bool MakeCachePath(const char* path, std::string& cache_path, bool is_create_dir = true, bool is_mirror_path = false);
+      static bool CheckCacheTopDir();
+      static bool MakeRandomTempPath(const char* path, std::string& tmppath);
+      static bool SetCheckCacheDirExist(bool is_check);
+      static bool CheckCacheDirExist();
+      static bool HasOpenEntityFd(const char* path);
+      static int GetOpenFdCount(const char* path);
+      static off_t GetEnsureFreeDiskSpace()
+      {
+          const std::lock_guard<std::mutex> lock(FdManager::reserved_diskspace_lock);
+          return FdManager::GetEnsureFreeDiskSpaceHasLock();
+      }
+      static off_t SetEnsureFreeDiskSpace(off_t size);
+      static bool InitFakeUsedDiskSize(off_t fake_freesize);
+      static bool IsSafeDiskSpace(const char* path, off_t size, bool withmsg = false);
+      static void FreeReservedDiskSpace(off_t size);
+      static bool ReserveDiskSpace(off_t size);
+      static bool HaveLseekHole();
+      static bool SetTmpDir(const char* dir);
+      static bool CheckTmpDirExist();
+      static std::unique_ptr<FILE, decltype(&s3fs_fclose)> MakeTempFile();
+      static off_t GetTotalDiskSpaceByRatio(int ratio);
 
-    static off_t GetEnsureFreeDiskSpace();
-    static off_t SetEnsureFreeDiskSpace(off_t size);
-    static bool IsSafeDiskSpace(const char* path, off_t size);
-    static void FreeReservedDiskSpace(off_t size);
-    static bool ReserveDiskSpace(off_t size);
+      // Return FdEntity associated with path, returning nullptr on error.  This operation increments the reference count; callers must decrement via Close after use.
+      FdEntity* GetFdEntity(const char* path, int& existfd, bool newfd = true) {
+          const std::lock_guard<std::mutex> lock(FdManager::fd_manager_lock);
+          return GetFdEntityHasLock(path, existfd, newfd);
+      }
+      FdEntity* GetFdEntityHasLock(const char* path, int& existfd, bool newfd = true) REQUIRES(FdManager::fd_manager_lock);
+      FdEntity* Open(int& fd, const char* path, const headers_t* pmeta, off_t size, const struct timespec& ts_mctime, int flags, bool force_tmpfile, bool is_create, bool ignore_modify);
+      FdEntity* GetExistFdEntity(const char* path, int existfd = -1);
+      FdEntity* OpenExistFdEntity(const char* path, int& fd, int flags = O_RDONLY);
+      void Rename(const std::string &from, const std::string &to);
+      bool Close(FdEntity* ent, int fd);
+      bool ChangeEntityToTempPath(std::shared_ptr<FdEntity> ent, const char* path);
+      void CleanupCacheDir();
 
-    // Return FdEntity associated with path, returning NULL on error.  This operation increments the reference count; callers must decrement via Close after use.
-    FdEntity* GetFdEntity(const char* path, int existfd = -1);
-    FdEntity* Open(const char* path, headers_t* pmeta = NULL, off_t size = -1, time_t time = -1, bool force_tmpfile = false, bool is_create = true, bool no_fd_lock_wait = false);
-    FdEntity* ExistOpen(const char* path, int existfd = -1, bool ignore_existfd = false);
-    void Rename(const std::string &from, const std::string &to);
-    bool Close(FdEntity* ent);
-    bool ChangeEntityToTempPath(FdEntity* ent, const char* path);
-    void CleanupCacheDir();
+      bool CheckAllCache();
 };
 
-#endif // FD_CACHE_H_
+#endif // S3FS_FDCACHE_H_
 
 /*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/fdcache_auto.cpp

@@ -0,0 +1,126 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+
+#include "s3fs_logger.h"
+#include "fdcache_auto.h"
+#include "fdcache.h"
+
+//------------------------------------------------
+// AutoFdEntity methods
+//------------------------------------------------
+AutoFdEntity::AutoFdEntity() : pFdEntity(nullptr), pseudo_fd(-1)
+{
+}
+
+AutoFdEntity::~AutoFdEntity()
+{
+    Close();
+}
+
+bool AutoFdEntity::Close()
+{
+    if(pFdEntity){
+        if(!FdManager::get()->Close(pFdEntity, pseudo_fd)){
+            S3FS_PRN_ERR("Failed to close fdentity.");
+            return false;
+        }
+        pFdEntity = nullptr;
+        pseudo_fd = -1;
+    }
+    return true;
+}
+
+// [NOTE]
+// This method touches the internal fdentity with.
+// This is used to keep the file open.
+//
+int AutoFdEntity::Detach()
+{
+    if(!pFdEntity){
+        S3FS_PRN_ERR("Does not have a associated FdEntity.");
+        return -1;
+    }
+    int fd    = pseudo_fd;
+    pseudo_fd = -1;
+    pFdEntity = nullptr;
+
+    return fd;
+}
+
+FdEntity* AutoFdEntity::Attach(const char* path, int existfd)
+{
+    Close();
+
+    if(nullptr == (pFdEntity = FdManager::get()->GetFdEntity(path, existfd, false))){
+        S3FS_PRN_DBG("Could not find fd entity object(file=%s, pseudo_fd=%d)", path, existfd);
+        return nullptr;
+    }
+    pseudo_fd = existfd;
+    return pFdEntity;
+}
+
+FdEntity* AutoFdEntity::Open(const char* path, const headers_t* pmeta, off_t size, const struct timespec& ts_mctime, int flags, bool force_tmpfile, bool is_create, bool ignore_modify, int* error)
+{
+    Close();
+
+    if(nullptr == (pFdEntity = FdManager::get()->Open(pseudo_fd, path, pmeta, size, ts_mctime, flags, force_tmpfile, is_create, ignore_modify))){
+        if(error){
+            *error = pseudo_fd;
+        }
+        pseudo_fd = -1;
+        return nullptr;
+    }
+    return pFdEntity;
+}
+
+// [NOTE]
+// the fd obtained by this method is not a newly created pseudo fd.
+//
+FdEntity* AutoFdEntity::GetExistFdEntity(const char* path, int existfd)
+{
+    Close();
+
+    FdEntity* ent;
+    if(nullptr == (ent = FdManager::get()->GetExistFdEntity(path, existfd))){
+        return nullptr;
+    }
+    return ent;
+}
+
+FdEntity* AutoFdEntity::OpenExistFdEntity(const char* path, int flags)
+{
+    Close();
+
+    if(nullptr == (pFdEntity = FdManager::get()->OpenExistFdEntity(path, pseudo_fd, flags))){
+        return nullptr;
+    }
+    return pFdEntity;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_auto.h

@@ -0,0 +1,72 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_AUTO_H_
+#define S3FS_FDCACHE_AUTO_H_
+
+#include <fcntl.h>
+
+#include "common.h"
+#include "metaheader.h"
+
+class FdEntity;
+
+//------------------------------------------------
+// class AutoFdEntity
+//------------------------------------------------
+// A class that opens fdentry and closes it automatically.
+// This class object is used to prevent inconsistencies in
+// the number of references in fdentry.
+// The methods are wrappers to the method of the FdManager class.
+//
+class AutoFdEntity
+{
+  private:
+      FdEntity* pFdEntity;
+      int       pseudo_fd;
+
+  public:
+      AutoFdEntity();
+      ~AutoFdEntity();
+      AutoFdEntity(const AutoFdEntity&) = delete;
+      AutoFdEntity(AutoFdEntity&&) = delete;
+      AutoFdEntity& operator=(const AutoFdEntity&) = delete;
+      AutoFdEntity& operator=(AutoFdEntity&&) = delete;
+
+      bool Close();
+      int Detach();
+      FdEntity* Attach(const char* path, int existfd);
+      int GetPseudoFd() const { return pseudo_fd; }
+
+      FdEntity* Open(const char* path, const headers_t* pmeta, off_t size, const struct timespec& ts_mctime, int flags, bool force_tmpfile, bool is_create, bool ignore_modify, int* error = nullptr);
+      FdEntity* GetExistFdEntity(const char* path, int existfd = -1);
+      FdEntity* OpenExistFdEntity(const char* path, int flags = O_RDONLY);
+};
+
+#endif // S3FS_FDCACHE_AUTO_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_entity.h

@@ -0,0 +1,252 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_ENTITY_H_
+#define S3FS_FDCACHE_ENTITY_H_
+
+#include <cstdint>
+#include <fcntl.h>
+#include <memory>
+#include <mutex>
+#include <string>
+
+#include "common.h"
+#include "fdcache_page.h"
+#include "fdcache_untreated.h"
+#include "metaheader.h"
+#include "s3fs_util.h"
+
+//----------------------------------------------
+// Typedef
+//----------------------------------------------
+class PseudoFdInfo;
+typedef std::map<int, std::unique_ptr<PseudoFdInfo>> fdinfo_map_t;
+
+//------------------------------------------------
+// class FdEntity
+//------------------------------------------------
+class FdEntity : public std::enable_shared_from_this<FdEntity>
+{
+    private:
+        // [NOTE]
+        // Distinguish between meta pending and new file creation pending,
+        // because the processing(request) at these updates is different.
+        // Therefore, the pending state is expressed by this enum type.
+        //
+        enum class pending_status_t : uint8_t {
+            NO_UPDATE_PENDING = 0,
+            UPDATE_META_PENDING,        // pending meta header
+            CREATE_FILE_PENDING         // pending file creation and meta header
+        };
+
+        static bool     mixmultipart;   // whether multipart uploading can use copy api.
+        static bool     streamupload;   // whether stream uploading.
+
+        mutable std::mutex fdent_lock;
+        std::string     path            GUARDED_BY(fdent_lock);       // object path
+        int             physical_fd     GUARDED_BY(fdent_lock);       // physical file(cache or temporary file) descriptor
+        UntreatedParts  untreated_list  GUARDED_BY(fdent_lock);       // list of untreated parts that have been written and not yet uploaded(for streamupload)
+        fdinfo_map_t    pseudo_fd_map   GUARDED_BY(fdent_lock);       // pseudo file descriptor information map
+        std::unique_ptr<FILE, decltype(&s3fs_fclose)> pfile GUARDED_BY(fdent_lock) = {nullptr, &s3fs_fclose};  // file pointer(tmp file or cache file)
+        ino_t           inode           GUARDED_BY(fdent_lock);       // inode number for cache file
+        headers_t       orgmeta         GUARDED_BY(fdent_lock);       // original headers at opening
+        off_t           size_orgmeta    GUARDED_BY(fdent_lock);       // original file size in original headers
+
+        mutable std::mutex fdent_data_lock;                           // protects the following members
+        PageList         pagelist       GUARDED_BY(fdent_data_lock);
+        std::string      cachepath      GUARDED_BY(fdent_data_lock);  // local cache file path
+                                                                      // (if this is empty, does not load/save pagelist.)
+        std::string      mirrorpath     GUARDED_BY(fdent_data_lock);  // mirror file path to local cache file path
+        pending_status_t pending_status GUARDED_BY(fdent_data_lock);  // status for new file creation and meta update
+        struct timespec  holding_mtime  GUARDED_BY(fdent_data_lock);  // if mtime is updated while the file is open, it is set time_t value
+
+    private:
+        static int FillFile(int fd, unsigned char byte, off_t size, off_t start);
+        static ino_t GetInode(int fd);
+
+        void Clear();
+        ino_t GetInode() const REQUIRES(FdEntity::fdent_data_lock);
+        int OpenMirrorFile() REQUIRES(FdEntity::fdent_data_lock);
+        int NoCacheLoadAndPost(PseudoFdInfo* pseudo_obj, off_t start = 0, off_t size = 0) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);    // size=0 means loading to end
+        PseudoFdInfo* CheckPseudoFdFlags(int fd, bool writable) REQUIRES(FdEntity::fdent_lock);
+        bool IsUploading() REQUIRES(FdEntity::fdent_lock);
+        bool SetAllStatus(bool is_loaded) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        bool SetAllStatusUnloaded() REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock) { return SetAllStatus(false); }
+        int NoCachePreMultipartPost(PseudoFdInfo* pseudo_obj) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        int NoCacheMultipartPost(PseudoFdInfo* pseudo_obj, int tgfd, off_t start, off_t size) REQUIRES(FdEntity::fdent_lock);
+        int NoCacheCompleteMultipartPost(PseudoFdInfo* pseudo_obj) REQUIRES(FdEntity::fdent_lock);
+        int RowFlushHasLock(int fd, const char* tpath, bool force_sync) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        int RowFlushNoMultipart(const PseudoFdInfo* pseudo_obj, const char* tpath) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        int RowFlushMultipart(PseudoFdInfo* pseudo_obj, const char* tpath) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        int RowFlushMixMultipart(PseudoFdInfo* pseudo_obj, const char* tpath) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        int RowFlushStreamMultipart(PseudoFdInfo* pseudo_obj, const char* tpath) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        ssize_t WriteNoMultipart(const PseudoFdInfo* pseudo_obj, const char* bytes, off_t start, size_t size) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        ssize_t WriteMultipart(PseudoFdInfo* pseudo_obj, const char* bytes, off_t start, size_t size) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        ssize_t WriteMixMultipart(PseudoFdInfo* pseudo_obj, const char* bytes, off_t start, size_t size) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        ssize_t WriteStreamUpload(PseudoFdInfo* pseudo_obj, const char* bytes, off_t start, size_t size) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+
+        int UploadPendingHasLock(int fd) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+
+        bool ReserveDiskSpace(off_t size) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+
+        bool AddUntreated(off_t start, off_t size) REQUIRES(FdEntity::fdent_lock);
+
+        bool IsDirtyMetadata() const REQUIRES(FdEntity::fdent_data_lock);
+
+        std::shared_ptr<FdEntity> get_shared_ptr() { return shared_from_this(); }
+
+    public:
+        static bool GetNoMixMultipart() { return mixmultipart; }
+        static bool SetNoMixMultipart();
+        static bool GetStreamUpload() { return streamupload; }
+        static bool SetStreamUpload(bool isstream);
+
+        explicit FdEntity(const char* tpath = nullptr, const char* cpath = nullptr);
+        ~FdEntity();
+        FdEntity(const FdEntity&) = delete;
+        FdEntity(FdEntity&&) = delete;
+        FdEntity& operator=(const FdEntity&) = delete;
+        FdEntity& operator=(FdEntity&&) = delete;
+
+        void Close(int fd);
+        bool IsOpen() const {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return (-1 != physical_fd);
+        }
+        bool FindPseudoFd(int fd) const {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return FindPseudoFdWithLock(fd);
+        }
+        bool FindPseudoFdWithLock(int fd) const REQUIRES(FdEntity::fdent_lock);
+        int Open(const headers_t* pmeta, off_t size, const struct timespec& ts_mctime, int flags);
+        bool LoadAll(int fd, off_t* size = nullptr, bool force_load = false);
+        int Dup(int fd) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return DupWithLock(fd);
+        }
+        int DupWithLock(int fd) REQUIRES(FdEntity::fdent_lock);
+        int OpenPseudoFd(int flags = O_RDONLY);
+        int GetOpenCount() const {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return GetOpenCountHasLock();
+        }
+        int GetOpenCountHasLock() const REQUIRES(FdEntity::fdent_lock);
+        std::string GetPath() const
+        {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return path;
+        }
+        bool RenamePath(const std::string& newpath, std::string& fentmapkey);
+        int GetPhysicalFd() const REQUIRES(FdEntity::fdent_lock) { return physical_fd; }
+        bool IsModified() const;
+        bool MergeOrgMeta(headers_t& updatemeta);
+        int UploadPending(int fd) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            const std::lock_guard<std::mutex> lock_data(fdent_data_lock);
+            return UploadPendingHasLock(fd);
+        }
+
+        bool GetStats(struct stat& st) const {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return GetStatsHasLock(st);
+        }
+        bool GetStatsHasLock(struct stat& st) const REQUIRES(FdEntity::fdent_lock);
+        int SetCtime(struct timespec time) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return SetCtimeHasLock(time);
+        }
+        int SetCtimeHasLock(struct timespec time) REQUIRES(FdEntity::fdent_lock);
+        int SetAtime(struct timespec time) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return SetAtimeHasLock(time);
+        }
+        int SetAtimeHasLock(struct timespec time) REQUIRES(FdEntity::fdent_lock);
+        int SetMCtime(struct timespec mtime, struct timespec ctime) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            const std::lock_guard<std::mutex> lock2(fdent_data_lock);
+            return SetMCtimeHasLock(mtime, ctime);
+        }
+        int SetMCtimeHasLock(struct timespec mtime, struct timespec ctime) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        bool UpdateCtime();
+        bool UpdateAtime();
+        bool UpdateMtime(bool clear_holding_mtime = false);
+        bool UpdateMCtime();
+        bool SetHoldingMtime(struct timespec mtime);
+        bool ClearHoldingMtime() REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);
+        bool GetSize(off_t& size) const;
+        bool GetXattr(std::string& xattr) const;
+        bool SetXattr(const std::string& xattr);
+        bool SetMode(mode_t mode) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return SetModeHasLock(mode);
+        }
+        bool SetModeHasLock(mode_t mode) REQUIRES(FdEntity::fdent_lock);
+        bool SetUId(uid_t uid) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return SetUIdHasLock(uid);
+        }
+        bool SetUIdHasLock(uid_t uid) REQUIRES(FdEntity::fdent_lock);
+        bool SetGId(gid_t gid) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            return SetGIdHasLock(gid);
+        }
+        bool SetGIdHasLock(gid_t gid) REQUIRES(FdEntity::fdent_lock);
+        bool SetContentType(const char* path);
+
+        int Load(off_t start, off_t size, bool is_modified_flag = false) REQUIRES(FdEntity::fdent_lock, FdEntity::fdent_data_lock);  // size=0 means loading to end
+
+        off_t BytesModified();
+        int RowFlush(int fd, const char* tpath, bool force_sync = false) {
+            const std::lock_guard<std::mutex> lock(fdent_lock);
+            const std::lock_guard<std::mutex> lock_data(fdent_data_lock);
+            return RowFlushHasLock(fd, tpath, force_sync);
+        }
+        int Flush(int fd, bool force_sync = false) {
+            return RowFlush(fd, nullptr, force_sync);
+        }
+
+        ssize_t Read(int fd, char* bytes, off_t start, size_t size, bool force_load = false);
+        ssize_t Write(int fd, const char* bytes, off_t start, size_t size);
+
+        bool PunchHole(off_t start = 0, size_t size = 0);
+
+        void MarkDirtyNewFile();
+        bool IsDirtyNewFile() const;
+        void MarkDirtyMetadata();
+
+        bool GetLastUpdateUntreatedPart(off_t& start, off_t& size) const REQUIRES(FdEntity::fdent_lock);
+        bool ReplaceLastUpdateUntreatedPart(off_t front_start, off_t front_size, off_t behind_start, off_t behind_size) REQUIRES(FdEntity::fdent_lock);
+
+        // Intentionally unimplemented -- for lock checking only.
+        std::mutex* GetMutex() RETURN_CAPABILITY(fdent_lock);
+};
+
+typedef std::map<std::string, std::shared_ptr<FdEntity>> fdent_map_t;           // key=path, value=FdEntity
+
+#endif // S3FS_FDCACHE_ENTITY_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_fdinfo.h

@@ -0,0 +1,135 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_FDINFO_H_
+#define S3FS_FDCACHE_FDINFO_H_
+
+#include <memory>
+#include <mutex>
+#include <string>
+
+#include "common.h"
+#include "fdcache_entity.h"
+#include "psemaphore.h"
+#include "metaheader.h"
+#include "types.h"
+
+class UntreatedParts;
+
+//------------------------------------------------
+// Structure of parameters to pass to thread
+//------------------------------------------------
+class PseudoFdInfo;
+
+struct pseudofdinfo_thparam
+{
+    PseudoFdInfo* ppseudofdinfo = nullptr;
+    std::string   path;
+    std::string   upload_id;
+    int           upload_fd = -1;
+    off_t         start = 0;
+    off_t         size = 0;
+    bool          is_copy = false;
+    int           part_num = -1;
+    etagpair*     petag = nullptr;
+};
+
+//------------------------------------------------
+// Class PseudoFdInfo
+//------------------------------------------------
+class PseudoFdInfo
+{
+    private:
+        static int              max_threads;
+        static int              opt_max_threads;    // for option value
+
+        int                     pseudo_fd;
+        int                     physical_fd;
+        int                     flags;              // flags at open
+        mutable std::mutex      upload_list_lock;   // protects upload_id/fd, upload_list, etc.
+        std::string             upload_id       GUARDED_BY(upload_list_lock);   //
+        int                     upload_fd       GUARDED_BY(upload_list_lock);   // duplicated fd for uploading
+        filepart_list_t         upload_list     GUARDED_BY(upload_list_lock);
+        petagpool               etag_entities   GUARDED_BY(upload_list_lock);   // list of etag string and part number entities(to maintain the etag entity even if MPPART_INFO is destroyed)
+        int                     instruct_count  GUARDED_BY(upload_list_lock);   // number of instructions for processing by threads
+        int                     completed_count GUARDED_BY(upload_list_lock);   // number of completed processes by thread
+        int                     last_result     GUARDED_BY(upload_list_lock);   // the result of thread processing
+        Semaphore               uploaded_sem;                                   // use a semaphore to trigger an upload completion like event flag
+
+    private:
+        static void* MultipartUploadThreadWorker(void* arg);
+
+        bool Clear();
+        void CloseUploadFd();
+        bool OpenUploadFd();
+        bool ResetUploadInfo() REQUIRES(upload_list_lock);
+        bool RowInitialUploadInfo(const std::string& id, bool is_cancel_mp);
+        void IncreaseInstructionCount();
+        bool CompleteInstruction(int result) REQUIRES(upload_list_lock);
+        bool GetUploadInfo(std::string& id, int& fd) const;
+        bool ParallelMultipartUpload(const char* path, const mp_part_list_t& mplist, bool is_copy);
+        bool InsertUploadPart(off_t start, off_t size, int part_num, bool is_copy, etagpair** ppetag);
+        bool CancelAllThreads();
+        bool ExtractUploadPartsFromUntreatedArea(off_t untreated_start, off_t untreated_size, mp_part_list_t& to_upload_list, filepart_list_t& cancel_upload_list, off_t max_mp_size);
+        bool IsUploadingHasLock() const REQUIRES(upload_list_lock);
+
+    public:
+        explicit PseudoFdInfo(int fd = -1, int open_flags = 0);
+        ~PseudoFdInfo();
+        PseudoFdInfo(const PseudoFdInfo&) = delete;
+        PseudoFdInfo(PseudoFdInfo&&) = delete;
+        PseudoFdInfo& operator=(const PseudoFdInfo&) = delete;
+        PseudoFdInfo& operator=(PseudoFdInfo&&) = delete;
+
+        int GetPhysicalFd() const { return physical_fd; }
+        int GetPseudoFd() const { return pseudo_fd; }
+        int GetFlags() const { return flags; }
+        bool Writable() const;
+        bool Readable() const;
+
+        bool Set(int fd, int open_flags);
+        bool ClearUploadInfo(bool is_cancel_mp = false);
+        bool InitialUploadInfo(const std::string& id){ return RowInitialUploadInfo(id, true); }
+
+        bool IsUploading() const;
+        bool GetUploadId(std::string& id) const;
+        bool GetEtaglist(etaglist_t& list) const;
+
+        bool AppendUploadPart(off_t start, off_t size, bool is_copy = false, etagpair** ppetag = nullptr);
+
+        bool ParallelMultipartUploadAll(const char* path, const mp_part_list_t& to_upload_list, const mp_part_list_t& copy_list, int& result);
+
+        int WaitAllThreadsExit();
+        ssize_t UploadBoundaryLastUntreatedArea(const char* path, headers_t& meta, FdEntity* pfdent) REQUIRES(pfdent->GetMutex());
+        bool ExtractUploadPartsFromAllArea(UntreatedParts& untreated_list, mp_part_list_t& to_upload_list, mp_part_list_t& to_copy_list, mp_part_list_t& to_download_list, filepart_list_t& cancel_upload_list, bool& wait_upload_complete, off_t max_mp_size, off_t file_size, bool use_copy);
+};
+
+typedef std::map<int, std::unique_ptr<PseudoFdInfo>> fdinfo_map_t;
+
+#endif // S3FS_FDCACHE_FDINFO_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_page.h

@@ -0,0 +1,140 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_PAGE_H_
+#define S3FS_FDCACHE_PAGE_H_
+
+#include <cstdint>
+#include <sys/types.h>
+#include <vector>
+
+//------------------------------------------------
+// Symbols
+//------------------------------------------------
+// [NOTE]
+// If the following symbols in lseek whence are undefined, define them.
+// If it is not supported by lseek, s3fs judges by the processing result of lseek.
+//
+#ifndef SEEK_DATA
+#define SEEK_DATA               3
+#endif
+#ifndef SEEK_HOLE
+#define SEEK_HOLE               4
+#endif
+
+//------------------------------------------------
+// Structure fdpage
+//------------------------------------------------
+// page block information
+struct fdpage
+{
+    off_t  offset;
+    off_t  bytes;
+    bool   loaded;
+    bool   modified;
+
+    explicit fdpage(off_t start = 0, off_t  size = 0, bool is_loaded = false, bool is_modified = false) :
+        offset(start), bytes(size), loaded(is_loaded), modified(is_modified) {}
+
+    off_t next() const
+    {
+        return (offset + bytes);
+    }
+    off_t end() const
+    {
+        return (0 < bytes ? offset + bytes - 1 : 0);
+    }
+};
+typedef std::vector<struct fdpage> fdpage_list_t;
+
+//------------------------------------------------
+// Class PageList
+//------------------------------------------------
+class CacheFileStat;
+class FdEntity;
+
+// cppcheck-suppress copyCtorAndEqOperator
+class PageList
+{
+    friend class FdEntity;    // only one method access directly pages.
+
+    private:
+        fdpage_list_t pages;
+        bool          is_shrink;    // [NOTE] true if it has been shrunk even once
+
+    public:
+        enum class page_status : int8_t {
+            NOT_LOAD_MODIFIED = 0,
+            LOADED,
+            MODIFIED,
+            LOAD_MODIFIED
+        };
+
+    private:
+        static bool GetSparseFilePages(int fd, size_t file_size, fdpage_list_t& sparse_list);
+        static bool CheckZeroAreaInFile(int fd, off_t start, size_t bytes);
+        static bool CheckAreaInSparseFile(const struct fdpage& checkpage, const fdpage_list_t& sparse_list, int fd, fdpage_list_t& err_area_list, fdpage_list_t& warn_area_list);
+
+        void Clear();
+        bool Parse(off_t new_pos);
+        bool Serialize(CacheFileStat& file, ino_t inode);
+
+    public:
+        static void FreeList(fdpage_list_t& list);
+
+        explicit PageList(off_t size = 0, bool is_loaded = false, bool is_modified = false, bool shrunk = false);
+        PageList(const PageList&) = delete;
+        PageList(PageList&&) = delete;
+        PageList& operator=(const PageList&) = delete;
+        PageList& operator=(PageList&&) = delete;
+        ~PageList();
+
+        bool Init(off_t size, bool is_loaded, bool is_modified);
+        off_t Size() const;
+        bool Resize(off_t size, bool is_loaded, bool is_modified);
+
+        bool IsPageLoaded(off_t start = 0, off_t size = 0) const;                  // size=0 is checking to end of list
+        bool SetPageLoadedStatus(off_t start, off_t size, PageList::page_status pstatus = page_status::LOADED, bool is_compress = true);
+        bool FindUnloadedPage(off_t start, off_t& resstart, off_t& ressize) const;
+        off_t GetTotalUnloadedPageSize(off_t start = 0, off_t size = 0, off_t limit_size = 0) const;   // size=0 is checking to end of list
+        size_t GetUnloadedPages(fdpage_list_t& unloaded_list, off_t start = 0, off_t size = 0) const;  // size=0 is checking to end of list
+        bool GetPageListsForMultipartUpload(fdpage_list_t& dlpages, fdpage_list_t& mixuppages, off_t max_partsize);
+        bool GetNoDataPageLists(fdpage_list_t& nodata_pages, off_t start = 0, size_t size = 0);
+
+        off_t BytesModified() const;
+        bool IsModified() const;
+        bool ClearAllModified();
+
+        bool Compress();
+        bool Deserialize(CacheFileStat& file, ino_t inode);
+        void Dump() const;
+        bool CompareSparseFile(int fd, size_t file_size, fdpage_list_t& err_area_list, fdpage_list_t& warn_area_list);
+};
+
+#endif // S3FS_FDCACHE_PAGE_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_pseudofd.cpp

@@ -0,0 +1,104 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <algorithm>
+#include <cstdlib>
+#include <vector>
+
+#include "fdcache_pseudofd.h"
+
+//------------------------------------------------
+// Symbols
+//------------------------------------------------
+// [NOTE]
+// The minimum pseudo fd value starts 2.
+// This is to avoid mistakes for 0(stdout) and 1(stderr), which are usually used.
+//
+static constexpr int MIN_PSEUDOFD_NUMBER = 2;
+
+//------------------------------------------------
+// PseudoFdManager class methods
+//------------------------------------------------
+PseudoFdManager& PseudoFdManager::GetManager()
+{
+    static PseudoFdManager singleton;
+    return singleton;
+}
+
+int PseudoFdManager::Get()
+{
+    return (PseudoFdManager::GetManager()).CreatePseudoFd();
+}
+
+bool PseudoFdManager::Release(int fd)
+{
+    return (PseudoFdManager::GetManager()).ReleasePseudoFd(fd);
+}
+
+//------------------------------------------------
+// PseudoFdManager methods
+//------------------------------------------------
+int PseudoFdManager::GetUnusedMinPseudoFd() const
+{
+    int min_fd = MIN_PSEUDOFD_NUMBER;
+
+    // Look for the first discontinuous value.
+    for(auto iter = pseudofd_list.cbegin(); iter != pseudofd_list.cend(); ++iter){
+        if(min_fd == (*iter)){
+            ++min_fd;
+        }else if(min_fd < (*iter)){
+            break;
+        }
+    }
+    return min_fd;
+}
+
+int PseudoFdManager::CreatePseudoFd()
+{
+    const std::lock_guard<std::mutex> lock(pseudofd_list_lock);
+
+    int new_fd = PseudoFdManager::GetUnusedMinPseudoFd();
+    pseudofd_list.push_back(new_fd);
+    std::sort(pseudofd_list.begin(), pseudofd_list.end());
+
+    return new_fd;
+}
+
+bool PseudoFdManager::ReleasePseudoFd(int fd)
+{
+    const std::lock_guard<std::mutex> lock(pseudofd_list_lock);
+
+    for(auto iter = pseudofd_list.begin(); iter != pseudofd_list.end(); ++iter){
+        if(fd == (*iter)){
+            pseudofd_list.erase(iter);
+            return true;
+        }
+    }
+    return false;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_pseudofd.h

@@ -0,0 +1,73 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_PSEUDOFD_H_
+#define S3FS_FDCACHE_PSEUDOFD_H_
+
+#include <mutex>
+#include <vector>
+
+#include "common.h"
+
+//------------------------------------------------
+// Typdefs
+//------------------------------------------------
+// List of pseudo fd in use
+//
+typedef std::vector<int>    pseudofd_list_t;
+
+//------------------------------------------------
+// Class PseudoFdManager
+//------------------------------------------------
+class PseudoFdManager
+{
+    private:
+        pseudofd_list_t pseudofd_list GUARDED_BY(pseudofd_list_lock);
+        std::mutex      pseudofd_list_lock;    // protects pseudofd_list
+
+        static PseudoFdManager& GetManager();
+
+        PseudoFdManager() = default;
+        ~PseudoFdManager() = default;
+
+        int GetUnusedMinPseudoFd() const REQUIRES(pseudofd_list_lock);
+        int CreatePseudoFd();
+        bool ReleasePseudoFd(int fd);
+
+    public:
+        PseudoFdManager(const PseudoFdManager&) = delete;
+        PseudoFdManager(PseudoFdManager&&) = delete;
+        PseudoFdManager& operator=(const PseudoFdManager&) = delete;
+        PseudoFdManager& operator=(PseudoFdManager&&) = delete;
+
+        static int Get();
+        static bool Release(int fd);
+};
+
+#endif // S3FS_FDCACHE_PSEUDOFD_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_stat.cpp

@@ -0,0 +1,283 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cerrno>
+#include <unistd.h>
+#include <string>
+#include <sys/file.h>
+#include <sys/stat.h>
+
+#include "s3fs_logger.h"
+#include "fdcache_stat.h"
+#include "fdcache.h"
+#include "s3fs_util.h"
+#include "s3fs_cred.h"
+#include "string_util.h"
+
+//------------------------------------------------
+// CacheFileStat class methods
+//------------------------------------------------
+std::string CacheFileStat::GetCacheFileStatTopDir()
+{
+    std::string top_path;
+    if(!FdManager::IsCacheDir() || S3fsCred::GetBucket().empty()){
+        return top_path;
+    }
+
+    // stat top dir( "/<cache_dir>/.<bucket_name>.stat" )
+    top_path += FdManager::GetCacheDir();
+    top_path += "/.";
+    top_path += S3fsCred::GetBucket();
+    top_path += ".stat";
+    return top_path;
+}
+
+int CacheFileStat::MakeCacheFileStatPath(const char* path, std::string& sfile_path, bool is_create_dir)
+{
+    std::string top_path = CacheFileStat::GetCacheFileStatTopDir();
+    if(top_path.empty()){
+        S3FS_PRN_ERR("The path to cache top dir is empty.");
+        return -EIO;
+    }
+
+    if(is_create_dir){
+      int result;
+      if(0 != (result = mkdirp(top_path + mydirname(path), 0777))){
+          S3FS_PRN_ERR("failed to create dir(%s) by errno(%d).", path, result);
+          return result;
+      }
+    }
+    if(!path || '\0' == path[0]){
+        sfile_path = top_path;
+    }else{
+        sfile_path = top_path + SAFESTRPTR(path);
+    }
+    return 0;
+}
+
+bool CacheFileStat::CheckCacheFileStatTopDir()
+{
+    std::string top_path = CacheFileStat::GetCacheFileStatTopDir();
+    if(top_path.empty()){
+        S3FS_PRN_INFO("The path to cache top dir is empty, thus not need to check permission.");
+        return true;
+    }
+
+    return check_exist_dir_permission(top_path.c_str());
+}
+
+int CacheFileStat::DeleteCacheFileStat(const char* path)
+{
+    if(!path || '\0' == path[0]){
+        return -EINVAL;
+    }
+    // stat path
+    std::string sfile_path;
+    int result;
+    if(0 != (result = CacheFileStat::MakeCacheFileStatPath(path, sfile_path, false))){
+        S3FS_PRN_ERR("failed to create cache stat file path(%s)", path);
+        return result;
+    }
+    if(0 != unlink(sfile_path.c_str())){
+        result = -errno;
+        if(-ENOENT == result){
+            S3FS_PRN_DBG("failed to delete file(%s): errno=%d", path, result);
+        }else{
+            S3FS_PRN_ERR("failed to delete file(%s): errno=%d", path, result);
+        }
+        return result;
+    }
+    return 0;
+}
+
+// [NOTE]
+// If remove stat file directory, it should do before removing
+// file cache directory.
+//
+bool CacheFileStat::DeleteCacheFileStatDirectory()
+{
+    std::string top_path = CacheFileStat::GetCacheFileStatTopDir();
+    if(top_path.empty()){
+        S3FS_PRN_INFO("The path to cache top dir is empty, thus not need to remove it.");
+        return true;
+    }
+    return delete_files_in_dir(top_path.c_str(), true);
+}
+
+bool CacheFileStat::RenameCacheFileStat(const char* oldpath, const char* newpath)
+{
+    if(!oldpath || '\0' == oldpath[0] || !newpath || '\0' == newpath[0]){
+        return false;
+    }
+
+    // stat path
+    std::string old_filestat;
+    std::string new_filestat;
+    if(0 != CacheFileStat::MakeCacheFileStatPath(oldpath, old_filestat, false) || 0 != CacheFileStat::MakeCacheFileStatPath(newpath, new_filestat, false)){
+        return false;
+    }
+
+    // check new stat path
+    struct stat st;
+    if(0 == stat(new_filestat.c_str(), &st)){
+        // new stat path is existed, then unlink it.
+        if(-1 == unlink(new_filestat.c_str())){
+            S3FS_PRN_ERR("failed to unlink new cache file stat path(%s) by errno(%d).", new_filestat.c_str(), errno);
+            return false;
+        }
+    }
+
+    // check old stat path
+    if(0 != stat(old_filestat.c_str(), &st)){
+        // old stat path is not existed, then nothing to do any more.
+        return true;
+    }
+
+    // link and unlink
+    if(-1 == link(old_filestat.c_str(), new_filestat.c_str())){
+        S3FS_PRN_ERR("failed to link old cache file stat path(%s) to new cache file stat path(%s) by errno(%d).", old_filestat.c_str(), new_filestat.c_str(), errno);
+        return false;
+    }
+    if(-1 == unlink(old_filestat.c_str())){
+        S3FS_PRN_ERR("failed to unlink old cache file stat path(%s) by errno(%d).", old_filestat.c_str(), errno);
+        return false;
+    }
+   return true;
+}
+
+//------------------------------------------------
+// CacheFileStat methods
+//------------------------------------------------
+CacheFileStat::CacheFileStat(const char* tpath) : fd(-1)
+{
+    if(tpath && '\0' != tpath[0]){
+        SetPath(tpath, true);
+    }
+}
+
+CacheFileStat::~CacheFileStat()
+{
+    Release();
+}
+
+bool CacheFileStat::SetPath(const char* tpath, bool is_open)
+{
+    if(!tpath || '\0' == tpath[0]){
+        return false;
+    }
+    if(!Release()){
+        // could not close old stat file.
+        return false;
+    }
+    path = tpath;
+    if(!is_open){
+        return true;
+    }
+    return Open();
+}
+
+bool CacheFileStat::RawOpen(bool readonly)
+{
+    if(path.empty()){
+        return false;
+    }
+    if(-1 != fd){
+        // already opened
+        return true;
+    }
+    // stat path
+    std::string sfile_path;
+    if(0 != CacheFileStat::MakeCacheFileStatPath(path.c_str(), sfile_path, true)){
+        S3FS_PRN_ERR("failed to create cache stat file path(%s)", path.c_str());
+        return false;
+    }
+    // open
+    int tmpfd;
+    if(readonly){
+        if(-1 == (tmpfd = open(sfile_path.c_str(), O_RDONLY))){
+            S3FS_PRN_ERR("failed to read only open cache stat file path(%s) - errno(%d)", path.c_str(), errno);
+            return false;
+        }
+    }else{
+        if(-1 == (tmpfd = open(sfile_path.c_str(), O_CREAT|O_RDWR, 0600))){
+            S3FS_PRN_ERR("failed to open cache stat file path(%s) - errno(%d)", path.c_str(), errno);
+            return false;
+        }
+    }
+    scope_guard guard([&]() { close(tmpfd); });
+
+    // lock
+    if(-1 == flock(tmpfd, LOCK_EX)){
+        S3FS_PRN_ERR("failed to lock cache stat file(%s) - errno(%d)", path.c_str(), errno);
+        return false;
+    }
+    // seek top
+    if(0 != lseek(tmpfd, 0, SEEK_SET)){
+        S3FS_PRN_ERR("failed to lseek cache stat file(%s) - errno(%d)", path.c_str(), errno);
+        flock(tmpfd, LOCK_UN);
+        return false;
+    }
+    S3FS_PRN_DBG("file locked(%s - %s)", path.c_str(), sfile_path.c_str());
+
+    guard.dismiss();
+    fd = tmpfd;
+    return true;
+}
+
+bool CacheFileStat::Open()
+{
+    return RawOpen(false);
+}
+
+bool CacheFileStat::ReadOnlyOpen()
+{
+    return RawOpen(true);
+}
+
+bool CacheFileStat::Release()
+{
+    if(-1 == fd){
+        // already release
+        return true;
+    }
+    // unlock
+    if(-1 == flock(fd, LOCK_UN)){
+        S3FS_PRN_ERR("failed to unlock cache stat file(%s) - errno(%d)", path.c_str(), errno);
+        return false;
+    }
+    S3FS_PRN_DBG("file unlocked(%s)", path.c_str());
+
+    if(-1 == close(fd)){
+        S3FS_PRN_ERR("failed to close cache stat file(%s) - errno(%d)", path.c_str(), errno);
+        return false;
+    }
+    fd = -1;
+
+    return true;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_stat.h

@@ -0,0 +1,70 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_STAT_H_
+#define S3FS_FDCACHE_STAT_H_
+
+#include <string>
+
+//------------------------------------------------
+// CacheFileStat
+//------------------------------------------------
+class CacheFileStat
+{
+    private:
+        std::string path;
+        int         fd;
+
+    private:
+        static int MakeCacheFileStatPath(const char* path, std::string& sfile_path, bool is_create_dir = true);
+
+        bool RawOpen(bool readonly);
+
+    public:
+        static std::string GetCacheFileStatTopDir();
+        static int DeleteCacheFileStat(const char* path);
+        static bool CheckCacheFileStatTopDir();
+        static bool DeleteCacheFileStatDirectory();
+        static bool RenameCacheFileStat(const char* oldpath, const char* newpath);
+
+        explicit CacheFileStat(const char* tpath = nullptr);
+        ~CacheFileStat();
+        CacheFileStat(const CacheFileStat&) = delete;
+        CacheFileStat(CacheFileStat&&) = delete;
+        CacheFileStat& operator=(const CacheFileStat&) = delete;
+        CacheFileStat& operator=(CacheFileStat&&) = delete;
+
+        bool Open();
+        bool ReadOnlyOpen();
+        bool Release();
+        bool SetPath(const char* tpath, bool is_open = true);
+        int GetFd() const { return fd; }
+};
+
+#endif // S3FS_FDCACHE_STAT_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_untreated.cpp

@@ -0,0 +1,248 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdlib>
+
+#include "s3fs_logger.h"
+#include "fdcache_untreated.h"
+
+//------------------------------------------------
+// UntreatedParts methods
+//------------------------------------------------
+bool UntreatedParts::empty()
+{
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+    return untreated_list.empty();
+}
+
+bool UntreatedParts::AddPart(off_t start, off_t size)
+{
+    if(start < 0 || size <= 0){
+        S3FS_PRN_ERR("Parameter are wrong(start=%lld, size=%lld).", static_cast<long long int>(start), static_cast<long long int>(size));
+        return false;
+    }
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    ++last_tag;
+
+    // Check the overlap with the existing part and add the part.
+    for(auto iter = untreated_list.begin(); iter != untreated_list.end(); ++iter){
+        if(iter->stretch(start, size, last_tag)){
+            // the part was stretched, thus check if it overlaps with next parts
+            auto niter = iter;
+            for(++niter; niter != untreated_list.cend(); ){
+                if(!iter->stretch(niter->start, niter->size, last_tag)){
+                    // This next part does not overlap with the current part
+                    break;
+                }
+                // Since the parts overlap and the current part is stretched, delete this next part.
+                niter = untreated_list.erase(niter);
+            }
+            // success to stretch and compress existed parts
+            return true;
+
+        }else if((start + size) < iter->start){
+            // The part to add should be inserted before the current part.
+            untreated_list.insert(iter, untreatedpart(start, size, last_tag));
+            // success to stretch and compress existed parts
+            return true;
+        }
+    }
+    // There are no overlapping parts in the untreated_list, then add the part at end of list
+    untreated_list.emplace_back(start, size, last_tag);
+    return true;
+}
+
+bool UntreatedParts::RowGetPart(off_t& start, off_t& size, off_t max_size, off_t min_size, bool lastpart) const
+{
+    if(max_size <= 0 || min_size < 0 || max_size < min_size){
+        S3FS_PRN_ERR("Parameter are wrong(max_size=%lld, min_size=%lld).", static_cast<long long int>(max_size), static_cast<long long int>(min_size));
+        return false;
+    }
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    // Check the overlap with the existing part and add the part.
+    for(auto iter = untreated_list.cbegin(); iter != untreated_list.cend(); ++iter){
+        if(!lastpart || iter->untreated_tag == last_tag){
+            if(min_size <= iter->size){
+                if(iter->size <= max_size){
+                    // whole part( min <= part size <= max )
+                    start = iter->start;
+                    size  = iter->size;
+                }else{
+                    // Partially take out part( max < part size )
+                    start = iter->start;
+                    size  = max_size;
+                }
+                return true;
+            }else{
+                if(lastpart){
+                    return false;
+                }
+            }
+        }
+    }
+    return false;
+}
+
+// [NOTE]
+// If size is specified as 0, all areas(parts) after start will be deleted.
+//
+bool UntreatedParts::ClearParts(off_t start, off_t size)
+{
+    if(start < 0 || size < 0){
+        S3FS_PRN_ERR("Parameter are wrong(start=%lld, size=%lld).", static_cast<long long int>(start), static_cast<long long int>(size));
+        return false;
+    }
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    if(untreated_list.empty()){
+        return true;
+    }
+
+    // Check the overlap with the existing part.
+    for(auto iter = untreated_list.begin(); iter != untreated_list.end(); ){
+        if(0 != size && (start + size) <= iter->start){
+            // clear area is in front of iter area, no more to do.
+            break;
+        }else if(start <= iter->start){
+            if(0 != size && (start + size) <= (iter->start + iter->size)){
+                // clear area overlaps with iter area(on the start side)
+                iter->size  = (iter->start + iter->size) - (start + size);
+                iter->start = start + size;
+                if(0 == iter->size){
+                    iter = untreated_list.erase(iter);
+                }
+            }else{
+                // clear area overlaps with all of iter area
+                iter = untreated_list.erase(iter);
+            }
+        }else if(start < (iter->start + iter->size)){
+            // clear area overlaps with iter area(on the end side)
+            if(0 == size || (iter->start + iter->size) <= (start + size)){
+                // start to iter->end is clear
+                iter->size = start - iter->start;
+            }else{
+                // parse current part
+                iter->size = start - iter->start;
+
+                // add new part
+                off_t next_start = start + size;
+                off_t next_size  = (iter->start + iter->size) - (start + size);
+                long  next_tag   = iter->untreated_tag;
+                ++iter;
+                iter = untreated_list.insert(iter, untreatedpart(next_start, next_size, next_tag));
+                ++iter;
+            }
+        }else{
+            // clear area is in behind of iter area
+            ++iter;
+        }
+    }
+    return true;
+}
+
+//
+// Update the last updated Untreated part
+//
+bool UntreatedParts::GetLastUpdatePart(off_t& start, off_t& size) const
+{
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    for(auto iter = untreated_list.cbegin(); iter != untreated_list.cend(); ++iter){
+        if(iter->untreated_tag == last_tag){
+            start = iter->start;
+            size  = iter->size;
+            return true;
+        }
+    }
+    return false;
+}
+
+//
+// Replaces the last updated Untreated part.
+//
+// [NOTE]
+// If size <= 0, delete that part
+//
+bool UntreatedParts::ReplaceLastUpdatePart(off_t start, off_t size)
+{
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    for(auto iter = untreated_list.begin(); iter != untreated_list.end(); ++iter){
+        if(iter->untreated_tag == last_tag){
+            if(0 < size){
+                iter->start = start;
+                iter->size  = size;
+            }else{
+                untreated_list.erase(iter);
+            }
+            return true;
+        }
+    }
+    return false;
+}
+
+//
+// Remove the last updated Untreated part.
+//
+bool UntreatedParts::RemoveLastUpdatePart()
+{
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    for(auto iter = untreated_list.begin(); iter != untreated_list.end(); ++iter){
+        if(iter->untreated_tag == last_tag){
+            untreated_list.erase(iter);
+            return true;
+        }
+    }
+    return false;
+}
+
+//
+// Duplicate the internally untreated_list.
+//
+bool UntreatedParts::Duplicate(untreated_list_t& list)
+{
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    list = untreated_list;
+    return true;
+}
+
+void UntreatedParts::Dump()
+{
+    const std::lock_guard<std::mutex> lock(untreated_list_lock);
+
+    S3FS_PRN_DBG("untreated list = [");
+    for(auto iter = untreated_list.cbegin(); iter != untreated_list.cend(); ++iter){
+        S3FS_PRN_DBG("    {%014lld - %014lld : tag=%ld}", static_cast<long long int>(iter->start), static_cast<long long int>(iter->size), iter->untreated_tag);
+    }
+    S3FS_PRN_DBG("]");
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/fdcache_untreated.h

@@ -0,0 +1,77 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_FDCACHE_UNTREATED_H_
+#define S3FS_FDCACHE_UNTREATED_H_
+
+#include <mutex>
+
+#include "common.h"
+#include "types.h"
+
+//------------------------------------------------
+// Class UntreatedParts
+//------------------------------------------------
+class UntreatedParts
+{
+    private:
+        mutable std::mutex untreated_list_lock;   // protects untreated_list
+
+        untreated_list_t untreated_list GUARDED_BY(untreated_list_lock);
+        long             last_tag GUARDED_BY(untreated_list_lock) = 0;  // [NOTE] Use this to identify the latest updated part.
+
+    private:
+        bool RowGetPart(off_t& start, off_t& size, off_t max_size, off_t min_size, bool lastpart) const;
+
+    public:
+        UntreatedParts() = default;
+        ~UntreatedParts() = default;
+        UntreatedParts(const UntreatedParts&) = delete;
+        UntreatedParts(UntreatedParts&&) = delete;
+        UntreatedParts& operator=(const UntreatedParts&) = delete;
+        UntreatedParts& operator=(UntreatedParts&&) = delete;
+
+        bool empty();
+
+        bool AddPart(off_t start, off_t size);
+        bool GetLastUpdatedPart(off_t& start, off_t& size, off_t max_size, off_t min_size = MIN_MULTIPART_SIZE) const { return RowGetPart(start, size, max_size, min_size, true); }
+
+        bool ClearParts(off_t start, off_t size);
+        bool ClearAll() { return ClearParts(0, 0); }
+
+        bool GetLastUpdatePart(off_t& start, off_t& size) const;
+        bool ReplaceLastUpdatePart(off_t start, off_t size);
+        bool RemoveLastUpdatePart();
+
+        bool Duplicate(untreated_list_t& list);
+
+        void Dump();
+};
+
+#endif // S3FS_FDCACHE_UNTREATED_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/gnutls_auth.cpp

@@ -18,19 +18,18 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <pthread.h>
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
 #include <unistd.h>
 #include <syslog.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <string.h>
 #include <gcrypt.h>
 #include <gnutls/gnutls.h>
 #include <gnutls/crypto.h>
-#ifdef	USE_GNUTLS_NETTLE
+#ifdef USE_GNUTLS_NETTLE
 #include <nettle/md5.h>
 #include <nettle/sha1.h>
 #include <nettle/hmac.h>
@@ -39,53 +38,53 @@
 #include <map>
 
 #include "common.h"
+#include "s3fs.h"
 #include "s3fs_auth.h"
-
-using namespace std;
+#include "s3fs_logger.h"
 
 //-------------------------------------------------------------------
 // Utility Function for version
 //-------------------------------------------------------------------
-#ifdef	USE_GNUTLS_NETTLE
+#ifdef USE_GNUTLS_NETTLE
 
 const char* s3fs_crypt_lib_name(void)
 {
-  static const char version[] = "GnuTLS(nettle)";
+    static constexpr char version[] = "GnuTLS(nettle)";
 
-  return version;
+    return version;
 }
 
-#else	// USE_GNUTLS_NETTLE
+#else // USE_GNUTLS_NETTLE
 
 const char* s3fs_crypt_lib_name()
 {
-  static const char version[] = "GnuTLS(gcrypt)";
+    static constexpr char version[] = "GnuTLS(gcrypt)";
 
-  return version;
+    return version;
 }
 
-#endif	// USE_GNUTLS_NETTLE
+#endif // USE_GNUTLS_NETTLE
 
 //-------------------------------------------------------------------
 // Utility Function for global init
 //-------------------------------------------------------------------
 bool s3fs_init_global_ssl()
 {
-  if(GNUTLS_E_SUCCESS != gnutls_global_init()){
-    return false;
-  }
+    if(GNUTLS_E_SUCCESS != gnutls_global_init()){
+        return false;
+    }
 #ifndef USE_GNUTLS_NETTLE
-  if(NULL == gcry_check_version(NULL)){
-    return false;
-  }
-#endif	// USE_GNUTLS_NETTLE
-  return true;
+    if(nullptr == gcry_check_version(nullptr)){
+        return false;
+    }
+#endif // USE_GNUTLS_NETTLE
+    return true;
 }
 
 bool s3fs_destroy_global_ssl()
 {
-  gnutls_global_deinit();
-  return true;
+    gnutls_global_deinit();
+    return true;
 }
 
 //-------------------------------------------------------------------
@@ -93,304 +92,299 @@ bool s3fs_destroy_global_ssl()
 //-------------------------------------------------------------------
 bool s3fs_init_crypt_mutex()
 {
-  return true;
+    return true;
 }
 
 bool s3fs_destroy_crypt_mutex()
 {
-  return true;
+    return true;
 }
 
 //-------------------------------------------------------------------
 // Utility Function for HMAC
 //-------------------------------------------------------------------
-#ifdef	USE_GNUTLS_NETTLE
+#ifdef USE_GNUTLS_NETTLE
 
-bool s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
+std::unique_ptr<unsigned char[]> s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
 {
-  if(!key || !data || !digest || !digestlen){
-    return false;
-  }
+    if(!key || !data || !digestlen){
+        return nullptr;
+    }
 
-  *digest = new unsigned char[SHA1_DIGEST_SIZE];
+    std::unique_ptr<unsigned char[]> digest(new unsigned char[SHA1_DIGEST_SIZE]);
 
-  struct hmac_sha1_ctx ctx_hmac;
-  hmac_sha1_set_key(&ctx_hmac, keylen, reinterpret_cast<const uint8_t*>(key));
-  hmac_sha1_update(&ctx_hmac, datalen, reinterpret_cast<const uint8_t*>(data));
-  hmac_sha1_digest(&ctx_hmac, SHA1_DIGEST_SIZE, reinterpret_cast<uint8_t*>(*digest));
-  *digestlen = SHA1_DIGEST_SIZE;
+    struct hmac_sha1_ctx ctx_hmac;
+    hmac_sha1_set_key(&ctx_hmac, keylen, reinterpret_cast<const uint8_t*>(key));
+    hmac_sha1_update(&ctx_hmac, datalen, reinterpret_cast<const uint8_t*>(data));
+    hmac_sha1_digest(&ctx_hmac, SHA1_DIGEST_SIZE, reinterpret_cast<uint8_t*>(digest.get()));
+    *digestlen = SHA1_DIGEST_SIZE;
 
-  return true;
+    return digest;
 }
 
-bool s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
+std::unique_ptr<unsigned char[]> s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
 {
-  if(!key || !data || !digest || !digestlen){
-    return false;
-  }
+    if(!key || !data || !digestlen){
+        return nullptr;
+    }
 
-  *digest = new unsigned char[SHA256_DIGEST_SIZE];
+    std::unique_ptr<unsigned char[]> digest(new unsigned char[SHA256_DIGEST_SIZE]);
 
-  struct hmac_sha256_ctx ctx_hmac;
-  hmac_sha256_set_key(&ctx_hmac, keylen, reinterpret_cast<const uint8_t*>(key));
-  hmac_sha256_update(&ctx_hmac, datalen, reinterpret_cast<const uint8_t*>(data));
-  hmac_sha256_digest(&ctx_hmac, SHA256_DIGEST_SIZE, reinterpret_cast<uint8_t*>(*digest));
-  *digestlen = SHA256_DIGEST_SIZE;
+    struct hmac_sha256_ctx ctx_hmac;
+    hmac_sha256_set_key(&ctx_hmac, keylen, reinterpret_cast<const uint8_t*>(key));
+    hmac_sha256_update(&ctx_hmac, datalen, reinterpret_cast<const uint8_t*>(data));
+    hmac_sha256_digest(&ctx_hmac, SHA256_DIGEST_SIZE, reinterpret_cast<uint8_t*>(digest.get()));
+    *digestlen = SHA256_DIGEST_SIZE;
 
-  return true;
+    return digest;
 }
 
-#else	// USE_GNUTLS_NETTLE
+#else // USE_GNUTLS_NETTLE
 
-bool s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
+std::unique_ptr<unsigned char[]> s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
 {
-  if(!key || !data || !digest || !digestlen){
-    return false;
-  }
+    if(!key || !data || !digestlen){
+        return nullptr;
+    }
 
-  if(0 == (*digestlen = gnutls_hmac_get_len(GNUTLS_MAC_SHA1))){
-    return false;
-  }
-  *digest = new unsigned char[*digestlen + 1];
-  if(0 > gnutls_hmac_fast(GNUTLS_MAC_SHA1, key, keylen, data, datalen, *digest)){
-    delete[] *digest;
-    *digest = NULL;
-    return false;
-  }
-  return true;
+    if(0 == (*digestlen = gnutls_hmac_get_len(GNUTLS_MAC_SHA1))){
+        return nullptr;
+    }
+    std::unique_ptr<unsigned char[]> digest(new unsigned char[*digestlen + 1]);
+    if(0 > gnutls_hmac_fast(GNUTLS_MAC_SHA1, key, keylen, data, datalen, digest.get())){
+        return nullptr;
+    }
+    return digest;
 }
 
-bool s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
+std::unique_ptr<unsigned char[]> s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
 {
-  if(!key || !data || !digest || !digestlen){
-    return false;
-  }
+    if(!key || !data || !digestlen){
+        return nullptr;
+    }
 
-  if(0 == (*digestlen = gnutls_hmac_get_len(GNUTLS_MAC_SHA256))){
-    return false;
-  }
-  *digest = new unsigned char[*digestlen + 1];
-  if(0 > gnutls_hmac_fast(GNUTLS_MAC_SHA256, key, keylen, data, datalen, *digest)){
-    delete[] *digest;
-    *digest = NULL;
-    return false;
-  }
-  return true;
+    if(0 == (*digestlen = gnutls_hmac_get_len(GNUTLS_MAC_SHA256))){
+        return nullptr;
+    }
+    std::unique_ptr<unsigned char[]> digest(new unsigned char[*digestlen + 1]);
+    if(0 > gnutls_hmac_fast(GNUTLS_MAC_SHA256, key, keylen, data, datalen, digest.get())){
+        return nullptr;
+    }
+    return digest;
 }
 
-#endif	// USE_GNUTLS_NETTLE
+#endif // USE_GNUTLS_NETTLE
 
 //-------------------------------------------------------------------
 // Utility Function for MD5
 //-------------------------------------------------------------------
-size_t get_md5_digest_length()
+#ifdef USE_GNUTLS_NETTLE
+bool s3fs_md5(const unsigned char* data, size_t datalen, md5_t* result)
 {
-  return 16;
+    struct md5_ctx ctx_md5;
+    md5_init(&ctx_md5);
+    md5_update(&ctx_md5, datalen, data);
+    md5_digest(&ctx_md5, result->size(), result->data());
+
+    return true;
 }
 
-#ifdef	USE_GNUTLS_NETTLE
-unsigned char* s3fs_md5hexsum(int fd, off_t start, ssize_t size)
+bool s3fs_md5_fd(int fd, off_t start, off_t size, md5_t* result)
 {
-  struct md5_ctx ctx_md5;
-  unsigned char  buf[512];
-  ssize_t        bytes;
-  unsigned char* result;
+    struct md5_ctx ctx_md5;
+    off_t          bytes;
 
-  memset(buf, 0, 512);
-  md5_init(&ctx_md5);
-
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      return NULL;
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
     }
-    md5_update(&ctx_md5, bytes, buf);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_md5_digest_length()];
-  md5_digest(&ctx_md5, get_md5_digest_length(), result);
 
-  return result;
+    md5_init(&ctx_md5);
+
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            return false;
+        }
+        md5_update(&ctx_md5, bytes, reinterpret_cast<const uint8_t*>(buf.data()));
+    }
+    md5_digest(&ctx_md5, result->size(), result->data());
+
+    return true;
 }
 
-#else	// USE_GNUTLS_NETTLE
+#else // USE_GNUTLS_NETTLE
 
-unsigned char* s3fs_md5hexsum(int fd, off_t start, ssize_t size)
+bool s3fs_md5(const unsigned char* data, size_t datalen, md5_t* digest)
 {
-  gcry_md_hd_t ctx_md5;
-  gcry_error_t err;
-  char    buf[512];
-  ssize_t bytes;
-  unsigned char* result;
-
-  if(-1 == size){
-    struct stat st;
-    if(-1 == fstat(fd, &st)){
-      return NULL;
+    gcry_md_hd_t   ctx_md5;
+    gcry_error_t   err;
+    if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_md5, GCRY_MD_MD5, 0))){
+        S3FS_PRN_ERR("MD5 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
+        return false;
     }
-    size = static_cast<ssize_t>(st.st_size);
-  }
+    gcry_md_write(ctx_md5, digest->data(), digest->size());
+    gcry_md_close(ctx_md5);
 
-  memset(buf, 0, 512);
-  if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_md5, GCRY_MD_MD5, 0))){
-    S3FS_PRN_ERR("MD5 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
-    return NULL;
-  }
-
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      gcry_md_close(ctx_md5);
-      return NULL;
-    }
-    gcry_md_write(ctx_md5, buf, bytes);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_md5_digest_length()];
-  memcpy(result, gcry_md_read(ctx_md5, 0), get_md5_digest_length());
-  gcry_md_close(ctx_md5);
-
-  return result;
+    return true;
 }
 
-#endif	// USE_GNUTLS_NETTLE
+bool s3fs_md5_fd(int fd, off_t start, off_t size, md5_t* result)
+{
+    gcry_md_hd_t ctx_md5;
+    gcry_error_t err;
+    off_t bytes;
+
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
+    }
+
+    if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_md5, GCRY_MD_MD5, 0))){
+        S3FS_PRN_ERR("MD5 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
+        return false;
+    }
+
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            gcry_md_close(ctx_md5);
+            return false;
+        }
+        gcry_md_write(ctx_md5, buf.data(), bytes);
+    }
+    memcpy(result->data(), gcry_md_read(ctx_md5, 0), result->size());
+    gcry_md_close(ctx_md5);
+
+    return true;
+}
+
+#endif // USE_GNUTLS_NETTLE
 
 //-------------------------------------------------------------------
 // Utility Function for SHA256
 //-------------------------------------------------------------------
-size_t get_sha256_digest_length()
+#ifdef USE_GNUTLS_NETTLE
+bool s3fs_sha256(const unsigned char* data, size_t datalen, sha256_t* digest)
 {
-  return 32;
+    struct sha256_ctx ctx_sha256;
+    sha256_init(&ctx_sha256);
+    sha256_update(&ctx_sha256, datalen, data);
+    sha256_digest(&ctx_sha256, digest->size(), digest->data());
+
+    return true;
 }
 
-#ifdef	USE_GNUTLS_NETTLE
-bool s3fs_sha256(const unsigned char* data, unsigned int datalen, unsigned char** digest, unsigned int* digestlen)
+bool s3fs_sha256_fd(int fd, off_t start, off_t size, sha256_t* result)
 {
-  (*digestlen) = static_cast<unsigned int>(get_sha256_digest_length());
-  *digest = new unsigned char[*digestlen];
+    struct sha256_ctx ctx_sha256;
+    off_t             bytes;
 
-  struct sha256_ctx ctx_sha256;
-  sha256_init(&ctx_sha256);
-  sha256_update(&ctx_sha256, datalen, data);
-  sha256_digest(&ctx_sha256, *digestlen, *digest);
+    sha256_init(&ctx_sha256);
 
-  return true;
-}
-
-unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size)
-{
-  struct sha256_ctx ctx_sha256;
-  unsigned char     buf[512];
-  ssize_t           bytes;
-  unsigned char*    result;
-
-  memset(buf, 0, 512);
-  sha256_init(&ctx_sha256);
-
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      return NULL;
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            return false;
+        }
+        sha256_update(&ctx_sha256, bytes, reinterpret_cast<const uint8_t*>(buf.data()));
     }
-    sha256_update(&ctx_sha256, bytes, buf);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_sha256_digest_length()];
-  sha256_digest(&ctx_sha256, get_sha256_digest_length(), result);
+    sha256_digest(&ctx_sha256, result->size(), result->data());
 
-  return result;
+    return true;
 }
 
-#else	// USE_GNUTLS_NETTLE
+#else // USE_GNUTLS_NETTLE
 
-bool s3fs_sha256(const unsigned char* data, unsigned int datalen, unsigned char** digest, unsigned int* digestlen)
+bool s3fs_sha256(const unsigned char* data, size_t datalen, sha256_t* digest)
 {
-  size_t len = (*digestlen) = static_cast<unsigned int>(get_sha256_digest_length());
-  *digest = new unsigned char[len];
+    gcry_md_hd_t   ctx_sha256;
+    gcry_error_t   err;
+    if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_sha256, GCRY_MD_SHA256, 0))){
+        S3FS_PRN_ERR("SHA256 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
+        return false;
+    }
+    gcry_md_write(ctx_sha256, data, datalen);
+    memcpy(digest->data(), gcry_md_read(ctx_sha256, 0), digest->size());
+    gcry_md_close(ctx_sha256);
 
-  gcry_md_hd_t   ctx_sha256;
-  gcry_error_t   err;
-  if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_sha256, GCRY_MD_SHA256, 0))){
-    S3FS_PRN_ERR("SHA256 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
-    delete[] *digest;
-    return false;
-  }
-  gcry_md_write(ctx_sha256, data, datalen);
-  memcpy(*digest, gcry_md_read(ctx_sha256, 0), *digestlen);
-  gcry_md_close(ctx_sha256);
-
-  return true;
+    return true;
 }
 
-unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size)
+bool s3fs_sha256_fd(int fd, off_t start, off_t size, sha256_t* result)
 {
-  gcry_md_hd_t   ctx_sha256;
-  gcry_error_t   err;
-  char           buf[512];
-  ssize_t        bytes;
-  unsigned char* result;
+    gcry_md_hd_t   ctx_sha256;
+    gcry_error_t   err;
+    off_t          bytes;
 
-  if(-1 == size){
-    struct stat st;
-    if(-1 == fstat(fd, &st)){
-      return NULL;
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
     }
-    size = static_cast<ssize_t>(st.st_size);
-  }
 
-  memset(buf, 0, 512);
-  if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_sha256, GCRY_MD_SHA256, 0))){
-    S3FS_PRN_ERR("SHA256 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
-    return NULL;
-  }
-
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      gcry_md_close(ctx_sha256);
-      return NULL;
+    if(GPG_ERR_NO_ERROR != (err = gcry_md_open(&ctx_sha256, GCRY_MD_SHA256, 0))){
+        S3FS_PRN_ERR("SHA256 context creation failure: %s/%s", gcry_strsource(err), gcry_strerror(err));
+        return false;
     }
-    gcry_md_write(ctx_sha256, buf, bytes);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_sha256_digest_length()];
-  memcpy(result, gcry_md_read(ctx_sha256, 0), get_sha256_digest_length());
-  gcry_md_close(ctx_sha256);
 
-  return result;
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            gcry_md_close(ctx_sha256);
+            return false;
+        }
+        gcry_md_write(ctx_sha256, buf.data(), bytes);
+    }
+    memcpy(result->data(), gcry_md_read(ctx_sha256, 0), result->size());
+    gcry_md_close(ctx_sha256);
+
+    return true;
 }
 
-#endif	// USE_GNUTLS_NETTLE
+#endif // USE_GNUTLS_NETTLE
 
 /*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/metaheader.cpp

@@ -0,0 +1,339 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <ctime>
+#include <string>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "common.h"
+#include "metaheader.h"
+#include "string_util.h"
+
+static constexpr struct timespec DEFAULT_TIMESPEC = {-1, 0};
+
+//-------------------------------------------------------------------
+// Utility functions for convert
+//-------------------------------------------------------------------
+static struct timespec cvt_string_to_time(const char *str)
+{
+    // [NOTE]
+    // In rclone, there are cases where ns is set to x-amz-meta-mtime
+    // with floating point number. s3fs uses x-amz-meta-mtime by
+    // truncating the floating point or less (in seconds or less) to
+    // correspond to this.
+    //
+    std::string strmtime;
+    long nsec = 0;
+    if(str && '\0' != *str){
+        strmtime = str;
+        std::string::size_type pos = strmtime.find('.', 0);
+        if(std::string::npos != pos){
+            nsec = cvt_strtoofft(strmtime.substr(pos + 1).c_str(), /*base=*/ 10);
+            strmtime.erase(pos);
+        }
+    }
+    struct timespec ts = {static_cast<time_t>(cvt_strtoofft(strmtime.c_str(), /*base=*/ 10)), nsec};
+    return ts;
+}
+
+static struct timespec get_time(const headers_t& meta, const char *header)
+{
+    headers_t::const_iterator iter;
+    if(meta.cend() == (iter = meta.find(header))){
+        return DEFAULT_TIMESPEC;
+    }
+    return cvt_string_to_time((*iter).second.c_str());
+}
+
+struct timespec get_mtime(const headers_t& meta, bool overcheck)
+{
+    struct timespec t = get_time(meta, "x-amz-meta-mtime");
+    if(0 < t.tv_sec){
+        return t;
+    }
+    t = get_time(meta, "x-amz-meta-goog-reserved-file-mtime");
+    if(0 < t.tv_sec){
+        return t;
+    }
+    if(overcheck){
+        struct timespec ts = {get_lastmodified(meta), 0};
+        return ts;
+    }
+    return DEFAULT_TIMESPEC;
+}
+
+struct timespec get_ctime(const headers_t& meta, bool overcheck)
+{
+    struct timespec t = get_time(meta, "x-amz-meta-ctime");
+    if(0 < t.tv_sec){
+        return t;
+    }
+    if(overcheck){
+        struct timespec ts = {get_lastmodified(meta), 0};
+        return ts;
+    }
+    return DEFAULT_TIMESPEC;
+}
+
+struct timespec get_atime(const headers_t& meta, bool overcheck)
+{
+    struct timespec t = get_time(meta, "x-amz-meta-atime");
+    if(0 < t.tv_sec){
+        return t;
+    }
+    if(overcheck){
+        struct timespec ts = {get_lastmodified(meta), 0};
+        return ts;
+    }
+    return DEFAULT_TIMESPEC;
+}
+
+off_t get_size(const char *s)
+{
+    return cvt_strtoofft(s, /*base=*/ 10);
+}
+
+off_t get_size(const headers_t& meta)
+{
+    auto iter = meta.find("Content-Length");
+    if(meta.cend() == iter){
+        return 0;
+    }
+    return get_size((*iter).second.c_str());
+}
+
+mode_t get_mode(const char *s, int base)
+{
+    return static_cast<mode_t>(cvt_strtoofft(s, base));
+}
+
+mode_t get_mode(const headers_t& meta, const std::string& strpath, bool checkdir, bool forcedir)
+{
+    mode_t mode     = 0;
+    bool   isS3sync = false;
+    headers_t::const_iterator iter;
+
+    if(meta.cend() != (iter = meta.find("x-amz-meta-mode"))){
+        mode = get_mode((*iter).second.c_str());
+    }else if(meta.cend() != (iter = meta.find("x-amz-meta-permissions"))){ // for s3sync
+        mode = get_mode((*iter).second.c_str());
+        isS3sync = true;
+    }else if(meta.cend() != (iter = meta.find("x-amz-meta-goog-reserved-posix-mode"))){ // for GCS
+        mode = get_mode((*iter).second.c_str(), 8);
+    }else{
+        // If another tool creates an object without permissions, default to owner
+        // read-write and group readable.
+        mode = (!strpath.empty() && '/' == *strpath.rbegin()) ? 0750 : 0640;
+    }
+
+    // Checking the bitmask, if the last 3 bits are all zero then process as a regular
+    // file type (S_IFDIR or S_IFREG), otherwise return mode unmodified so that S_IFIFO,
+    // S_IFSOCK, S_IFCHR, S_IFLNK and S_IFBLK devices can be processed properly by fuse.
+    if(!(mode & S_IFMT)){
+        if(!isS3sync){
+            if(checkdir){
+                if(forcedir){
+                    mode |= S_IFDIR;
+                }else{
+                    if(meta.cend() != (iter = meta.find("Content-Type"))){
+                        std::string strConType = (*iter).second;
+                        // Leave just the mime type, remove any optional parameters (eg charset)
+                        std::string::size_type pos = strConType.find(';');
+                        if(std::string::npos != pos){
+                            strConType.erase(pos);
+                        }
+                        if(strConType == "application/x-directory" || strConType == "httpd/unix-directory"){
+                            // Nextcloud uses this MIME type for directory objects when mounting bucket as external Storage
+                            mode |= S_IFDIR;
+                        }else if(!strpath.empty() && '/' == *strpath.rbegin()){
+                            if(strConType == "binary/octet-stream" || strConType == "application/octet-stream"){
+                                mode |= S_IFDIR;
+                            }else{
+                                if(complement_stat){
+                                    // If complement lack stat mode, when the object has '/' character at end of name
+                                    // and content type is text/plain and the object's size is 0 or 1, it should be
+                                    // directory.
+                                    off_t size = get_size(meta);
+                                    if(strConType == "text/plain" && (0 == size || 1 == size)){
+                                        mode |= S_IFDIR;
+                                    }else{
+                                        mode |= S_IFREG;
+                                    }
+                                }else{
+                                    mode |= S_IFREG;
+                                }
+                            }
+                        }else{
+                            mode |= S_IFREG;
+                        }
+                    }else{
+                      mode |= S_IFREG;
+                    }
+                }
+            }
+            // If complement lack stat mode, when it's mode is not set any permission,
+            // the object is added minimal mode only for read permission.
+            if(complement_stat && 0 == (mode & (S_IRWXU | S_IRWXG | S_IRWXO))){
+                mode |= (S_IRUSR | (0 == (mode & S_IFDIR) ? 0 : S_IXUSR));
+            }
+        }else{
+            if(!checkdir){
+                // cut dir/reg flag.
+                mode &= ~S_IFDIR;
+                mode &= ~S_IFREG;
+            }
+        }
+    }
+    return mode;
+}
+
+uid_t get_uid(const char *s)
+{
+    return static_cast<uid_t>(cvt_strtoofft(s, /*base=*/ 0));
+}
+
+uid_t get_uid(const headers_t& meta)
+{
+    headers_t::const_iterator iter;
+    if(meta.cend() != (iter = meta.find("x-amz-meta-uid"))){
+        return get_uid((*iter).second.c_str());
+    }else if(meta.cend() != (iter = meta.find("x-amz-meta-owner"))){ // for s3sync
+        return get_uid((*iter).second.c_str());
+    }else if(meta.cend() != (iter = meta.find("x-amz-meta-goog-reserved-posix-uid"))){ // for GCS
+        return get_uid((*iter).second.c_str());
+    }else{
+        return geteuid();
+    }
+}
+
+gid_t get_gid(const char *s)
+{
+    return static_cast<gid_t>(cvt_strtoofft(s, /*base=*/ 0));
+}
+
+gid_t get_gid(const headers_t& meta)
+{
+    headers_t::const_iterator iter;
+    if(meta.cend() != (iter = meta.find("x-amz-meta-gid"))){
+        return get_gid((*iter).second.c_str());
+    }else if(meta.cend() != (iter = meta.find("x-amz-meta-group"))){ // for s3sync
+        return get_gid((*iter).second.c_str());
+    }else if(meta.cend() != (iter = meta.find("x-amz-meta-goog-reserved-posix-gid"))){ // for GCS
+        return get_gid((*iter).second.c_str());
+    }else{
+        return getegid();
+    }
+}
+
+blkcnt_t get_blocks(off_t size)
+{
+    return (size / 512) + (0 == (size % 512) ? 0 : 1);
+}
+
+time_t cvtIAMExpireStringToTime(const char* s)
+{
+    struct tm tm{};
+    if(!s){
+        return 0L;
+    }
+    strptime(s, "%Y-%m-%dT%H:%M:%S", &tm);
+    return timegm(&tm); // GMT
+}
+
+time_t get_lastmodified(const char* s)
+{
+    struct tm tm{};
+    if(!s){
+        return -1;
+    }
+    strptime(s, "%a, %d %b %Y %H:%M:%S %Z", &tm);
+    return timegm(&tm); // GMT
+}
+
+time_t get_lastmodified(const headers_t& meta)
+{
+    auto iter = meta.find("Last-Modified");
+    if(meta.cend() == iter){
+        return -1;
+    }
+    return get_lastmodified((*iter).second.c_str());
+}
+
+//
+// Returns it whether it is an object with need checking in detail.
+// If this function returns true, the object is possible to be directory
+// and is needed checking detail(searching sub object).
+//
+bool is_need_check_obj_detail(const headers_t& meta)
+{
+    headers_t::const_iterator iter;
+
+    // directory object is Content-Length as 0.
+    if(0 != get_size(meta)){
+        return false;
+    }
+    // if the object has x-amz-meta information, checking is no more.
+    if(meta.cend() != meta.find("x-amz-meta-mode")  ||
+       meta.cend() != meta.find("x-amz-meta-mtime") ||
+       meta.cend() != meta.find("x-amz-meta-ctime") ||
+       meta.cend() != meta.find("x-amz-meta-atime") ||
+       meta.cend() != meta.find("x-amz-meta-uid")   ||
+       meta.cend() != meta.find("x-amz-meta-gid")   ||
+       meta.cend() != meta.find("x-amz-meta-owner") ||
+       meta.cend() != meta.find("x-amz-meta-group") ||
+       meta.cend() != meta.find("x-amz-meta-permissions") )
+    {
+        return false;
+    }
+    // if there is not Content-Type, or Content-Type is "x-directory",
+    // checking is no more.
+    if(meta.cend() == (iter = meta.find("Content-Type"))){
+        return false;
+    }
+    if("application/x-directory" == (*iter).second){
+        return false;
+    }
+    return true;
+}
+
+// [NOTE]
+// If add_noexist is false and the key does not exist, it will not be added.
+//
+bool merge_headers(headers_t& base, const headers_t& additional, bool add_noexist)
+{
+    bool added = false;
+    for(auto iter = additional.cbegin(); iter != additional.cend(); ++iter){
+        if(add_noexist || base.find(iter->first) != base.cend()){
+            base[iter->first] = iter->second;
+            added             = true;
+        }
+    }
+    return added;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/metaheader.h

@@ -0,0 +1,72 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_METAHEADER_H_
+#define S3FS_METAHEADER_H_
+
+#include <map>
+#include <string>
+#include <strings.h>
+#include <sys/stat.h>
+
+//-------------------------------------------------------------------
+// headers_t
+//-------------------------------------------------------------------
+struct header_nocase_cmp
+{
+    bool operator()(const std::string &strleft, const std::string &strright) const
+    {
+        return (strcasecmp(strleft.c_str(), strright.c_str()) < 0);
+    }
+};
+typedef std::map<std::string, std::string, header_nocase_cmp> headers_t;
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+struct timespec get_mtime(const headers_t& meta, bool overcheck = true);
+struct timespec get_ctime(const headers_t& meta, bool overcheck = true);
+struct timespec get_atime(const headers_t& meta, bool overcheck = true);
+off_t get_size(const char *s);
+off_t get_size(const headers_t& meta);
+mode_t get_mode(const char *s, int base = 0);
+mode_t get_mode(const headers_t& meta, const std::string& strpath, bool checkdir = false, bool forcedir = false);
+uid_t get_uid(const char *s);
+uid_t get_uid(const headers_t& meta);
+gid_t get_gid(const char *s);
+gid_t get_gid(const headers_t& meta);
+blkcnt_t get_blocks(off_t size);
+time_t cvtIAMExpireStringToTime(const char* s);
+time_t get_lastmodified(const char* s);
+time_t get_lastmodified(const headers_t& meta);
+bool is_need_check_obj_detail(const headers_t& meta);
+bool merge_headers(headers_t& base, const headers_t& additional, bool add_noexist);
+bool simple_parse_xml(const char* data, size_t len, const char* key, std::string& value);
+
+#endif // S3FS_METAHEADER_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/mpu_util.cpp

@@ -0,0 +1,158 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+#include <string>
+
+#include "s3fs_logger.h"
+#include "mpu_util.h"
+#include "curl.h"
+#include "s3fs_xml.h"
+#include "s3fs_auth.h"
+#include "string_util.h"
+
+//-------------------------------------------------------------------
+// Global variables
+//-------------------------------------------------------------------
+utility_incomp_type utility_mode = utility_incomp_type::NO_UTILITY_MODE;
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+static void print_incomp_mpu_list(const incomp_mpu_list_t& list)
+{
+    printf("\n");
+    printf("Lists the parts that have been uploaded for a specific multipart upload.\n");
+    printf("\n");
+
+    if(!list.empty()){
+        printf("---------------------------------------------------------------\n");
+
+        int cnt = 0;
+        for(auto iter = list.cbegin(); iter != list.cend(); ++iter, ++cnt){
+            printf(" Path     : %s\n", (*iter).key.c_str());
+            printf(" UploadId : %s\n", (*iter).id.c_str());
+            printf(" Date     : %s\n", (*iter).date.c_str());
+            printf("\n");
+        }
+        printf("---------------------------------------------------------------\n");
+
+    }else{
+        printf("There is no list.\n");
+    }
+}
+
+static bool abort_incomp_mpu_list(const incomp_mpu_list_t& list, time_t abort_time)
+{
+    if(list.empty()){
+        return true;
+    }
+    time_t now_time = time(nullptr);
+
+    // do removing.
+    S3fsCurl s3fscurl;
+    bool     result = true;
+    for(auto iter = list.cbegin(); iter != list.cend(); ++iter){
+        const char* tpath     = (*iter).key.c_str();
+        std::string upload_id = (*iter).id;
+
+        if(0 != abort_time){    // abort_time is 0, it means all.
+            time_t    date = 0;
+            if(!get_unixtime_from_iso8601((*iter).date.c_str(), date)){
+                S3FS_PRN_DBG("date format is not ISO 8601 for %s multipart uploading object, skip this.", tpath);
+                continue;
+            }
+            if(now_time <= (date + abort_time)){
+                continue;
+            }
+        }
+
+        if(0 != s3fscurl.AbortMultipartUpload(tpath, upload_id)){
+            S3FS_PRN_EXIT("Failed to remove %s multipart uploading object.", tpath);
+            result = false;
+        }else{
+            printf("Succeed to remove %s multipart uploading object.\n", tpath);
+        }
+
+        // reset(initialize) curl object
+        s3fscurl.DestroyCurlHandle();
+    }
+    return result;
+}
+
+int s3fs_utility_processing(time_t abort_time)
+{
+    if(utility_incomp_type::NO_UTILITY_MODE == utility_mode){
+        return EXIT_FAILURE;
+    }
+    printf("\n*** s3fs run as utility mode.\n\n");
+
+    S3fsCurl s3fscurl;
+    std::string body;
+    int result = EXIT_SUCCESS;
+    if(0 != s3fscurl.MultipartListRequest(body)){
+        S3FS_PRN_EXIT("Could not get list multipart upload.\nThere is no incomplete multipart uploaded object in bucket.\n");
+        result = EXIT_FAILURE;
+    }else{
+        // parse result(incomplete multipart upload information)
+        S3FS_PRN_DBG("response body = {\n%s\n}", body.c_str());
+
+        std::unique_ptr<xmlDoc, decltype(&xmlFreeDoc)> doc(xmlReadMemory(body.c_str(), static_cast<int>(body.size()), "", nullptr, 0), xmlFreeDoc);
+        if(nullptr == doc){
+            S3FS_PRN_DBG("xmlReadMemory exited with error.");
+            result = EXIT_FAILURE;
+
+        }else{
+            // make incomplete uploads list
+            incomp_mpu_list_t list;
+            if(!get_incomp_mpu_list(doc.get(), list)){
+                S3FS_PRN_DBG("get_incomp_mpu_list exited with error.");
+                result = EXIT_FAILURE;
+
+            }else{
+                if(utility_incomp_type::INCOMP_TYPE_LIST == utility_mode){
+                    // print list
+                    print_incomp_mpu_list(list);
+                }else if(utility_incomp_type::INCOMP_TYPE_ABORT == utility_mode){
+                    // remove
+                    if(!abort_incomp_mpu_list(list, abort_time)){
+                        S3FS_PRN_DBG("an error occurred during removal process.");
+                        result = EXIT_FAILURE;
+                    }
+                }
+            }
+        }
+    }
+
+    // ssl
+    s3fs_destroy_global_ssl();
+
+    return result;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/mpu_util.h

@@ -0,0 +1,66 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_MPU_UTIL_H_
+#define S3FS_MPU_UTIL_H_
+
+#include <cstdint>
+#include <ctime>
+#include <string>
+#include <vector>
+
+//-------------------------------------------------------------------
+// Structure / Typedef
+//-------------------------------------------------------------------
+typedef struct incomplete_multipart_upload_info
+{
+    std::string key;
+    std::string id;
+    std::string date;
+}INCOMP_MPU_INFO;
+
+typedef std::vector<INCOMP_MPU_INFO> incomp_mpu_list_t;
+
+//-------------------------------------------------------------------
+// enum for utility process mode
+//-------------------------------------------------------------------
+enum class utility_incomp_type : uint8_t {
+    NO_UTILITY_MODE = 0,      // not utility mode
+    INCOMP_TYPE_LIST,         // list of incomplete mpu
+    INCOMP_TYPE_ABORT         // delete incomplete mpu
+};
+
+extern utility_incomp_type utility_mode;
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+int s3fs_utility_processing(time_t abort_time);
+
+#endif // S3FS_MPU_UTIL_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/nss_auth.cpp

@@ -18,15 +18,14 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <pthread.h>
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
 #include <unistd.h>
 #include <syslog.h>
 #include <sys/types.h>
 #include <sys/stat.h>
-#include <string.h>
 #include <nss.h>
 #include <pk11pub.h>
 #include <hasht.h>
@@ -35,18 +34,18 @@
 #include <map>
 
 #include "common.h"
+#include "s3fs.h"
 #include "s3fs_auth.h"
-
-using namespace std;
+#include "s3fs_logger.h"
 
 //-------------------------------------------------------------------
 // Utility Function for version
 //-------------------------------------------------------------------
 const char* s3fs_crypt_lib_name()
 {
-  static const char version[] = "NSS";
+    static constexpr char version[] = "NSS";
 
-  return version;
+    return version;
 }
 
 //-------------------------------------------------------------------
@@ -54,21 +53,21 @@ const char* s3fs_crypt_lib_name()
 //-------------------------------------------------------------------
 bool s3fs_init_global_ssl()
 {
-  PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
+    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
 
-  if(SECSuccess != NSS_NoDB_Init(NULL)){
-    S3FS_PRN_ERR("Failed NSS_NoDB_Init call.");
-    return false;
-  }
-  return true;
+    if(SECSuccess != NSS_NoDB_Init(nullptr)){
+        S3FS_PRN_ERR("Failed NSS_NoDB_Init call.");
+        return false;
+    }
+    return true;
 }
 
 bool s3fs_destroy_global_ssl()
 {
-  NSS_Shutdown();
-  PL_ArenaFinish();
-  PR_Cleanup();
-  return true;
+    NSS_Shutdown();
+    PL_ArenaFinish();
+    PR_Cleanup();
+    return true;
 }
 
 //-------------------------------------------------------------------
@@ -76,186 +75,177 @@ bool s3fs_destroy_global_ssl()
 //-------------------------------------------------------------------
 bool s3fs_init_crypt_mutex()
 {
-  return true;
+    return true;
 }
 
 bool s3fs_destroy_crypt_mutex()
 {
-  return true;
+    return true;
 }
 
 //-------------------------------------------------------------------
 // Utility Function for HMAC
 //-------------------------------------------------------------------
-static bool s3fs_HMAC_RAW(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen, bool is_sha256)
+static std::unique_ptr<unsigned char[]> s3fs_HMAC_RAW(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen, bool is_sha256)
 {
-  if(!key || !data || !digest || !digestlen){
-    return false;
-  }
+    if(!key || !data || !digestlen){
+        return nullptr;
+    }
 
-  PK11SlotInfo* Slot;
-  PK11SymKey*   pKey;
-  PK11Context*  Context;
-  unsigned char tmpdigest[64];
-  SECItem       KeySecItem   = {siBuffer, reinterpret_cast<unsigned char*>(const_cast<void*>(key)), static_cast<unsigned int>(keylen)};
-  SECItem       NullSecItem  = {siBuffer, NULL, 0};
+    PK11SlotInfo* Slot;
+    PK11SymKey*   pKey;
+    PK11Context*  Context;
+    unsigned char tmpdigest[64];
+    SECItem       KeySecItem   = {siBuffer, reinterpret_cast<unsigned char*>(const_cast<void*>(key)), static_cast<unsigned int>(keylen)};
+    SECItem       NullSecItem  = {siBuffer, nullptr, 0};
 
-  if(NULL == (Slot = PK11_GetInternalKeySlot())){
-    return false;
-  }
-  if(NULL == (pKey = PK11_ImportSymKey(Slot, (is_sha256 ? CKM_SHA256_HMAC : CKM_SHA_1_HMAC), PK11_OriginUnwrap, CKA_SIGN, &KeySecItem, NULL))){
-    PK11_FreeSlot(Slot);
-    return false;
-  }
-  if(NULL == (Context = PK11_CreateContextBySymKey((is_sha256 ? CKM_SHA256_HMAC : CKM_SHA_1_HMAC), CKA_SIGN, pKey, &NullSecItem))){
-    PK11_FreeSymKey(pKey);
-    PK11_FreeSlot(Slot);
-    return false;
-  }
+    if(nullptr == (Slot = PK11_GetInternalKeySlot())){
+        return nullptr;
+    }
+    if(nullptr == (pKey = PK11_ImportSymKey(Slot, (is_sha256 ? CKM_SHA256_HMAC : CKM_SHA_1_HMAC), PK11_OriginUnwrap, CKA_SIGN, &KeySecItem, nullptr))){
+        PK11_FreeSlot(Slot);
+        return nullptr;
+    }
+    if(nullptr == (Context = PK11_CreateContextBySymKey((is_sha256 ? CKM_SHA256_HMAC : CKM_SHA_1_HMAC), CKA_SIGN, pKey, &NullSecItem))){
+        PK11_FreeSymKey(pKey);
+        PK11_FreeSlot(Slot);
+        return nullptr;
+    }
 
-  *digestlen = 0;
-  if(SECSuccess != PK11_DigestBegin(Context) ||
-     SECSuccess != PK11_DigestOp(Context, data, datalen) ||
-     SECSuccess != PK11_DigestFinal(Context, tmpdigest, digestlen, sizeof(tmpdigest)) )
-  {
+    *digestlen = 0;
+    if(SECSuccess != PK11_DigestBegin(Context) ||
+       SECSuccess != PK11_DigestOp(Context, data, datalen) ||
+       SECSuccess != PK11_DigestFinal(Context, tmpdigest, digestlen, sizeof(tmpdigest)) )
+    {
+        PK11_DestroyContext(Context, PR_TRUE);
+        PK11_FreeSymKey(pKey);
+        PK11_FreeSlot(Slot);
+        return nullptr;
+    }
     PK11_DestroyContext(Context, PR_TRUE);
     PK11_FreeSymKey(pKey);
     PK11_FreeSlot(Slot);
-    return false;
-  }
-  PK11_DestroyContext(Context, PR_TRUE);
-  PK11_FreeSymKey(pKey);
-  PK11_FreeSlot(Slot);
 
-  *digest = new unsigned char[*digestlen];
-  memcpy(*digest, tmpdigest, *digestlen);
+    std::unique_ptr<unsigned char[]> digest(new unsigned char[*digestlen]);
+    memcpy(digest.get(), tmpdigest, *digestlen);
 
-  return true;
+    return digest;
 }
 
-bool s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
+std::unique_ptr<unsigned char[]> s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
 {
-  return s3fs_HMAC_RAW(key, keylen, data, datalen, digest, digestlen, false);
+    return s3fs_HMAC_RAW(key, keylen, data, datalen, digestlen, false);
 }
 
-bool s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
+std::unique_ptr<unsigned char[]> s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
 {
-  return s3fs_HMAC_RAW(key, keylen, data, datalen, digest, digestlen, true);
+    return s3fs_HMAC_RAW(key, keylen, data, datalen, digestlen, true);
 }
 
 //-------------------------------------------------------------------
 // Utility Function for MD5
 //-------------------------------------------------------------------
-size_t get_md5_digest_length()
+bool s3fs_md5(const unsigned char* data, size_t datalen, md5_t* result)
 {
-  return MD5_LENGTH;
+    PK11Context*   md5ctx;
+    unsigned int   md5outlen;
+    md5ctx = PK11_CreateDigestContext(SEC_OID_MD5);
+
+    PK11_DigestOp(md5ctx, data, datalen);
+    PK11_DigestFinal(md5ctx, result->data(), &md5outlen, result->size());
+    PK11_DestroyContext(md5ctx, PR_TRUE);
+
+    return true;
 }
 
-unsigned char* s3fs_md5hexsum(int fd, off_t start, ssize_t size)
+bool s3fs_md5_fd(int fd, off_t start, off_t size, md5_t* result)
 {
-  PK11Context*	 md5ctx;
-  unsigned char  buf[512];
-  ssize_t        bytes;
-  unsigned char* result;
-  unsigned int   md5outlen;
+    PK11Context*   md5ctx;
+    off_t          bytes;
+    unsigned int   md5outlen;
 
-  if(-1 == size){
-    struct stat st;
-    if(-1 == fstat(fd, &st)){
-      return NULL;
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
     }
-    size = static_cast<ssize_t>(st.st_size);
-  }
 
-  memset(buf, 0, 512);
-  md5ctx = PK11_CreateDigestContext(SEC_OID_MD5);
+    md5ctx = PK11_CreateDigestContext(SEC_OID_MD5);
 
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      PK11_DestroyContext(md5ctx, PR_TRUE);
-      return NULL;
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<unsigned char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            PK11_DestroyContext(md5ctx, PR_TRUE);
+            return false;
+        }
+        PK11_DigestOp(md5ctx, buf.data(), bytes);
     }
-    PK11_DigestOp(md5ctx, buf, bytes);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_md5_digest_length()];
-  PK11_DigestFinal(md5ctx, result, &md5outlen, get_md5_digest_length());
-  PK11_DestroyContext(md5ctx, PR_TRUE);
+    PK11_DigestFinal(md5ctx, result->data(), &md5outlen, result->size());
+    PK11_DestroyContext(md5ctx, PR_TRUE);
 
-  return result;
+    return true;
 }
 
 //-------------------------------------------------------------------
 // Utility Function for SHA256
 //-------------------------------------------------------------------
-size_t get_sha256_digest_length()
+bool s3fs_sha256(const unsigned char* data, size_t datalen, sha256_t* digest)
 {
-  return SHA256_LENGTH;
+    PK11Context*   sha256ctx;
+    unsigned int   sha256outlen;
+    sha256ctx = PK11_CreateDigestContext(SEC_OID_SHA256);
+
+    PK11_DigestOp(sha256ctx, data, datalen);
+    PK11_DigestFinal(sha256ctx, digest->data(), &sha256outlen, digest->size());
+    PK11_DestroyContext(sha256ctx, PR_TRUE);
+
+    return true;
 }
 
-bool s3fs_sha256(const unsigned char* data, unsigned int datalen, unsigned char** digest, unsigned int* digestlen)
+bool s3fs_sha256_fd(int fd, off_t start, off_t size, sha256_t* result)
 {
-  (*digestlen) = static_cast<unsigned int>(get_sha256_digest_length());
-  *digest = new unsigned char[*digestlen];
+    PK11Context*   sha256ctx;
+    off_t          bytes;
+    unsigned int   sha256outlen;
 
-  PK11Context*	 sha256ctx;
-  unsigned int   sha256outlen;
-  sha256ctx = PK11_CreateDigestContext(SEC_OID_SHA256);
-
-  PK11_DigestOp(sha256ctx, data, datalen);
-  PK11_DigestFinal(sha256ctx, *digest, &sha256outlen, *digestlen);
-  PK11_DestroyContext(sha256ctx, PR_TRUE);
-  *digestlen = sha256outlen;
-
-  return true;
-}
-
-unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size)
-{
-  PK11Context*	 sha256ctx;
-  unsigned char  buf[512];
-  ssize_t        bytes;
-  unsigned char* result;
-  unsigned int   sha256outlen;
-
-  if(-1 == size){
-    struct stat st;
-    if(-1 == fstat(fd, &st)){
-      return NULL;
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
     }
-    size = static_cast<ssize_t>(st.st_size);
-  }
 
-  memset(buf, 0, 512);
-  sha256ctx = PK11_CreateDigestContext(SEC_OID_SHA256);
+    sha256ctx = PK11_CreateDigestContext(SEC_OID_SHA256);
 
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      PK11_DestroyContext(sha256ctx, PR_TRUE);
-      return NULL;
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<unsigned char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            PK11_DestroyContext(sha256ctx, PR_TRUE);
+            return false;
+        }
+        PK11_DigestOp(sha256ctx, buf.data(), bytes);
     }
-    PK11_DigestOp(sha256ctx, buf, bytes);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_sha256_digest_length()];
-  PK11_DigestFinal(sha256ctx, result, &sha256outlen, get_sha256_digest_length());
-  PK11_DestroyContext(sha256ctx, PR_TRUE);
+    PK11_DigestFinal(sha256ctx, result->data(), &sha256outlen, result->size());
+    PK11_DestroyContext(sha256ctx, PR_TRUE);
 
-  return result;
+    return true;
 }
 
 /*
@@ -263,6 +253,6 @@ unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size)
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/openssl_auth.cpp

@@ -18,39 +18,34 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#ifdef __clang__
+#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+#endif
+
 #include <cstdio>
 #include <cstdlib>
 #include <cerrno>
-#include <pthread.h>
+#include <mutex>
 #include <unistd.h>
-#include <syslog.h>
-#include <sys/types.h>
 #include <sys/stat.h>
-#include <cstring>
-#include <openssl/bio.h>
-#include <openssl/buffer.h>
 #include <openssl/evp.h>
 #include <openssl/hmac.h>
 #include <openssl/md5.h>
-#include <openssl/sha.h>
 #include <openssl/crypto.h>
 #include <openssl/err.h>
-#include <string>
-#include <map>
+#include <thread>
 
-#include "common.h"
 #include "s3fs_auth.h"
-
-using namespace std;
+#include "s3fs_logger.h"
 
 //-------------------------------------------------------------------
 // Utility Function for version
 //-------------------------------------------------------------------
 const char* s3fs_crypt_lib_name()
 {
-  static const char version[] = "OpenSSL";
+    static constexpr char version[] = "OpenSSL";
 
-  return version;
+    return version;
 }
 
 //-------------------------------------------------------------------
@@ -58,17 +53,24 @@ const char* s3fs_crypt_lib_name()
 //-------------------------------------------------------------------
 bool s3fs_init_global_ssl()
 {
-  ERR_load_crypto_strings();
-  ERR_load_BIO_strings();
-  OpenSSL_add_all_algorithms();
-  return true;
+    ERR_load_crypto_strings();
+
+    // [NOTE]
+    // OpenSSL 3.0 loads error strings automatically so these functions are not needed.
+    //
+    #ifndef USE_OPENSSL_30
+    ERR_load_BIO_strings();
+    #endif
+
+    OpenSSL_add_all_algorithms();
+    return true;
 }
 
 bool s3fs_destroy_global_ssl()
 {
-  EVP_cleanup();
-  ERR_free_strings();
-  return true;
+    EVP_cleanup();
+    ERR_free_strings();
+    return true;
 }
 
 //-------------------------------------------------------------------
@@ -77,255 +79,298 @@ bool s3fs_destroy_global_ssl()
 // internal use struct for openssl
 struct CRYPTO_dynlock_value
 {
-  pthread_mutex_t dyn_mutex;
+    std::mutex dyn_mutex;
 };
 
-static pthread_mutex_t* s3fs_crypt_mutex = NULL;
+static std::unique_ptr<std::mutex[]> s3fs_crypt_mutex;
 
-static void s3fs_crypt_mutex_lock(int mode, int pos, const char* file, int line) __attribute__ ((unused));
+static void s3fs_crypt_mutex_lock(int mode, int pos, const char* file, int line) __attribute__ ((unused)) NO_THREAD_SAFETY_ANALYSIS;
 static void s3fs_crypt_mutex_lock(int mode, int pos, const char* file, int line)
 {
-  if(s3fs_crypt_mutex){
-    if(mode & CRYPTO_LOCK){
-      pthread_mutex_lock(&s3fs_crypt_mutex[pos]);
-    }else{
-      pthread_mutex_unlock(&s3fs_crypt_mutex[pos]);
+    if(s3fs_crypt_mutex){
+        if(mode & CRYPTO_LOCK){
+            s3fs_crypt_mutex[pos].lock();
+        }else{
+            s3fs_crypt_mutex[pos].unlock();
+        }
     }
-  }
 }
 
 static unsigned long s3fs_crypt_get_threadid() __attribute__ ((unused));
 static unsigned long s3fs_crypt_get_threadid()
 {
-  // For FreeBSD etc, some system's pthread_t is structure pointer.
-  // Then we use cast like C style(not C++) instead of ifdef.
-  return (unsigned long)(pthread_self());
+    return static_cast<unsigned long>(std::hash<std::thread::id>()(std::this_thread::get_id()));
 }
 
 static struct CRYPTO_dynlock_value* s3fs_dyn_crypt_mutex(const char* file, int line) __attribute__ ((unused));
 static struct CRYPTO_dynlock_value* s3fs_dyn_crypt_mutex(const char* file, int line)
 {
-  struct CRYPTO_dynlock_value* dyndata = new CRYPTO_dynlock_value();
-  pthread_mutexattr_t attr;
-  pthread_mutexattr_init(&attr);
-#if S3FS_PTHREAD_ERRORCHECK
-  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
-#endif
-  pthread_mutex_init(&(dyndata->dyn_mutex), &attr);
-  return dyndata;
+    return new CRYPTO_dynlock_value();
 }
 
-static void s3fs_dyn_crypt_mutex_lock(int mode, struct CRYPTO_dynlock_value* dyndata, const char* file, int line) __attribute__ ((unused));
+static void s3fs_dyn_crypt_mutex_lock(int mode, struct CRYPTO_dynlock_value* dyndata, const char* file, int line) __attribute__ ((unused)) NO_THREAD_SAFETY_ANALYSIS;
 static void s3fs_dyn_crypt_mutex_lock(int mode, struct CRYPTO_dynlock_value* dyndata, const char* file, int line)
 {
-  if(dyndata){
-    if(mode & CRYPTO_LOCK){
-      pthread_mutex_lock(&(dyndata->dyn_mutex));
-    }else{
-      pthread_mutex_unlock(&(dyndata->dyn_mutex));
+    if(dyndata){
+        if(mode & CRYPTO_LOCK){
+            dyndata->dyn_mutex.lock();
+        }else{
+            dyndata->dyn_mutex.unlock();
+        }
     }
-  }
 }
 
 static void s3fs_destroy_dyn_crypt_mutex(struct CRYPTO_dynlock_value* dyndata, const char* file, int line) __attribute__ ((unused));
 static void s3fs_destroy_dyn_crypt_mutex(struct CRYPTO_dynlock_value* dyndata, const char* file, int line)
 {
-  if(dyndata){
-    pthread_mutex_destroy(&(dyndata->dyn_mutex));
     delete dyndata;
-  }
 }
 
 bool s3fs_init_crypt_mutex()
 {
-  if(s3fs_crypt_mutex){
-    S3FS_PRN_DBG("s3fs_crypt_mutex is not NULL, destroy it.");
-    if(!s3fs_destroy_crypt_mutex()){
-      S3FS_PRN_ERR("Failed to s3fs_crypt_mutex");
-      return false;
-    }
-  }
-  s3fs_crypt_mutex = new pthread_mutex_t[CRYPTO_num_locks()];
-  pthread_mutexattr_t attr;
-  pthread_mutexattr_init(&attr);
-#if S3FS_PTHREAD_ERRORCHECK
-  pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
-#endif
-  for(int cnt = 0; cnt < CRYPTO_num_locks(); cnt++){
-    pthread_mutex_init(&s3fs_crypt_mutex[cnt], &attr);
-  }
-  // static lock
-  CRYPTO_set_locking_callback(s3fs_crypt_mutex_lock);
-  CRYPTO_set_id_callback(s3fs_crypt_get_threadid);
-  // dynamic lock
-  CRYPTO_set_dynlock_create_callback(s3fs_dyn_crypt_mutex);
-  CRYPTO_set_dynlock_lock_callback(s3fs_dyn_crypt_mutex_lock);
-  CRYPTO_set_dynlock_destroy_callback(s3fs_destroy_dyn_crypt_mutex);
+    if(s3fs_crypt_mutex){
+        S3FS_PRN_DBG("s3fs_crypt_mutex is not nullptr, destroy it.");
 
-  return true;
+        // cppcheck-suppress unmatchedSuppression
+        // cppcheck-suppress knownConditionTrueFalse
+        if(!s3fs_destroy_crypt_mutex()){
+            S3FS_PRN_ERR("Failed to s3fs_crypt_mutex");
+            return false;
+        }
+    }
+    s3fs_crypt_mutex.reset(new std::mutex[CRYPTO_num_locks()]);
+    // static lock
+    CRYPTO_set_locking_callback(s3fs_crypt_mutex_lock);
+    CRYPTO_set_id_callback(s3fs_crypt_get_threadid);
+    // dynamic lock
+    CRYPTO_set_dynlock_create_callback(s3fs_dyn_crypt_mutex);
+    CRYPTO_set_dynlock_lock_callback(s3fs_dyn_crypt_mutex_lock);
+    CRYPTO_set_dynlock_destroy_callback(s3fs_destroy_dyn_crypt_mutex);
+
+    return true;
 }
 
 bool s3fs_destroy_crypt_mutex()
 {
-  if(!s3fs_crypt_mutex){
+    if(!s3fs_crypt_mutex){
+        return true;
+    }
+
+    CRYPTO_set_dynlock_destroy_callback(nullptr);
+    CRYPTO_set_dynlock_lock_callback(nullptr);
+    CRYPTO_set_dynlock_create_callback(nullptr);
+    CRYPTO_set_id_callback(nullptr);
+    CRYPTO_set_locking_callback(nullptr);
+
+    CRYPTO_cleanup_all_ex_data();
+    s3fs_crypt_mutex.reset();
+
     return true;
-  }
-
-  CRYPTO_set_dynlock_destroy_callback(NULL);
-  CRYPTO_set_dynlock_lock_callback(NULL);
-  CRYPTO_set_dynlock_create_callback(NULL);
-  CRYPTO_set_id_callback(NULL);
-  CRYPTO_set_locking_callback(NULL);
-
-  for(int cnt = 0; cnt < CRYPTO_num_locks(); cnt++){
-    pthread_mutex_destroy(&s3fs_crypt_mutex[cnt]);
-  }
-  CRYPTO_cleanup_all_ex_data();
-  delete[] s3fs_crypt_mutex;
-  s3fs_crypt_mutex = NULL;
-
-  return true;
 }
 
 //-------------------------------------------------------------------
 // Utility Function for HMAC
 //-------------------------------------------------------------------
-static bool s3fs_HMAC_RAW(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen, bool is_sha256)
+static std::unique_ptr<unsigned char[]> s3fs_HMAC_RAW(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen, bool is_sha256)
 {
-  if(!key || !data || !digest || !digestlen){
-    return false;
-  }
-  (*digestlen) = EVP_MAX_MD_SIZE * sizeof(unsigned char);
-  *digest = new unsigned char[*digestlen];
-  if(is_sha256){
-    HMAC(EVP_sha256(), key, keylen, data, datalen, *digest, digestlen);
-  }else{
-    HMAC(EVP_sha1(), key, keylen, data, datalen, *digest, digestlen);
-  }
-
-  return true;
-}
-
-bool s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
-{
-  return s3fs_HMAC_RAW(key, keylen, data, datalen, digest, digestlen, false);
-}
-
-bool s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen)
-{
-  return s3fs_HMAC_RAW(key, keylen, data, datalen, digest, digestlen, true);
-}
-
-//-------------------------------------------------------------------
-// Utility Function for MD5
-//-------------------------------------------------------------------
-size_t get_md5_digest_length()
-{
-  return MD5_DIGEST_LENGTH;
-}
-
-unsigned char* s3fs_md5hexsum(int fd, off_t start, ssize_t size)
-{
-  MD5_CTX md5ctx;
-  char    buf[512];
-  ssize_t bytes;
-  unsigned char* result;
-
-  if(-1 == size){
-    struct stat st;
-    if(-1 == fstat(fd, &st)){
-      return NULL;
+    if(!key || !data || !digestlen){
+        return nullptr;
     }
-    size = static_cast<ssize_t>(st.st_size);
-  }
-
-  memset(buf, 0, 512);
-  MD5_Init(&md5ctx);
-
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      return NULL;
+    (*digestlen) = EVP_MAX_MD_SIZE * sizeof(unsigned char);
+    std::unique_ptr<unsigned char[]> digest(new unsigned char[*digestlen]);
+    if(is_sha256){
+        HMAC(EVP_sha256(), key, static_cast<int>(keylen), data, datalen, digest.get(), digestlen);
+    }else{
+        HMAC(EVP_sha1(), key, static_cast<int>(keylen), data, datalen, digest.get(), digestlen);
     }
-    MD5_Update(&md5ctx, buf, bytes);
-    memset(buf, 0, 512);
-  }
 
-  result = new unsigned char[get_md5_digest_length()];
-  MD5_Final(result, &md5ctx);
-
-  return result;
+    return digest;
 }
 
+std::unique_ptr<unsigned char[]> s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
+{
+    return s3fs_HMAC_RAW(key, keylen, data, datalen, digestlen, false);
+}
+
+std::unique_ptr<unsigned char[]> s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen)
+{
+    return s3fs_HMAC_RAW(key, keylen, data, datalen, digestlen, true);
+}
+
+#ifdef USE_OPENSSL_30
+//-------------------------------------------------------------------
+// Utility Function for MD5 (OpenSSL >= 3.0)
+//-------------------------------------------------------------------
+// [NOTE]
+// OpenSSL 3.0 deprecated the MD5_*** low-level encryption functions,
+// so we should use the high-level EVP API instead.
+//
+
+bool s3fs_md5(const unsigned char* data, size_t datalen, md5_t* digest)
+{
+    auto digestlen = static_cast<unsigned int>(digest->size());
+
+    const EVP_MD* md    = EVP_get_digestbyname("md5");
+    EVP_MD_CTX*   mdctx = EVP_MD_CTX_create();
+    EVP_DigestInit_ex(mdctx, md, nullptr);
+    EVP_DigestUpdate(mdctx, data, datalen);
+    EVP_DigestFinal_ex(mdctx, digest->data(), &digestlen);
+    EVP_MD_CTX_destroy(mdctx);
+
+    return true;
+}
+
+bool s3fs_md5_fd(int fd, off_t start, off_t size, md5_t* result)
+{
+    auto           md5_digest_len = static_cast<unsigned int>(result->size());
+    off_t          bytes;
+
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
+    }
+
+    // instead of MD5_Init
+    std::unique_ptr<EVP_MD_CTX, decltype(&EVP_MD_CTX_free)> mdctx(EVP_MD_CTX_new(), EVP_MD_CTX_free);
+    EVP_DigestInit_ex(mdctx.get(), EVP_md5(), nullptr);
+
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            return false;
+        }
+        // instead of MD5_Update
+        EVP_DigestUpdate(mdctx.get(), buf.data(), bytes);
+    }
+
+    // instead of MD5_Final
+    EVP_DigestFinal_ex(mdctx.get(), result->data(), &md5_digest_len);
+
+    return true;
+}
+
+#else
+//-------------------------------------------------------------------
+// Utility Function for MD5 (OpenSSL < 3.0)
+//-------------------------------------------------------------------
+
+// TODO: Does this fail on OpenSSL < 3.0 and we need to use MD5_CTX functions?
+bool s3fs_md5(const unsigned char* data, size_t datalen, md5_t* digest)
+{
+    unsigned int digestlen = digest->size();
+
+    const EVP_MD* md    = EVP_get_digestbyname("md5");
+    EVP_MD_CTX*   mdctx = EVP_MD_CTX_create();
+    EVP_DigestInit_ex(mdctx, md, nullptr);
+    EVP_DigestUpdate(mdctx, data, datalen);
+    EVP_DigestFinal_ex(mdctx, digest->data(), &digestlen);
+    EVP_MD_CTX_destroy(mdctx);
+
+    return true;
+}
+
+bool s3fs_md5_fd(int fd, off_t start, off_t size, md5_t* result)
+{
+    MD5_CTX md5ctx;
+    off_t   bytes;
+
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            return false;
+        }
+        size = st.st_size;
+    }
+
+    MD5_Init(&md5ctx);
+
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            return false;
+        }
+        MD5_Update(&md5ctx, buf.data(), bytes);
+    }
+
+    MD5_Final(result->data(), &md5ctx);
+
+    return true;
+}
+#endif
+
 //-------------------------------------------------------------------
 // Utility Function for SHA256
 //-------------------------------------------------------------------
-size_t get_sha256_digest_length()
+bool s3fs_sha256(const unsigned char* data, size_t datalen, sha256_t* digest)
 {
-  return SHA256_DIGEST_LENGTH;
+    const EVP_MD* md    = EVP_get_digestbyname("sha256");
+    EVP_MD_CTX*   mdctx = EVP_MD_CTX_create();
+    EVP_DigestInit_ex(mdctx, md, nullptr);
+    EVP_DigestUpdate(mdctx, data, datalen);
+    auto digestlen = static_cast<unsigned int>(digest->size());
+    EVP_DigestFinal_ex(mdctx, digest->data(), &digestlen);
+    EVP_MD_CTX_destroy(mdctx);
+
+    return true;
 }
 
-bool s3fs_sha256(const unsigned char* data, unsigned int datalen, unsigned char** digest, unsigned int* digestlen)
+bool s3fs_sha256_fd(int fd, off_t start, off_t size, sha256_t* result)
 {
-  (*digestlen) = EVP_MAX_MD_SIZE * sizeof(unsigned char);
-  *digest = new unsigned char[*digestlen];
+    const EVP_MD*  md = EVP_get_digestbyname("sha256");
+    EVP_MD_CTX*    sha256ctx;
+    off_t          bytes;
 
-  const EVP_MD* md    = EVP_get_digestbyname("sha256");
-  EVP_MD_CTX*   mdctx = EVP_MD_CTX_create();
-  EVP_DigestInit_ex(mdctx, md, NULL);
-  EVP_DigestUpdate(mdctx, data, datalen);
-  EVP_DigestFinal_ex(mdctx, *digest, digestlen);
-  EVP_MD_CTX_destroy(mdctx);
-
-  return true;
-}
-
-unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size)
-{
-  const EVP_MD*  md = EVP_get_digestbyname("sha256");
-  EVP_MD_CTX*    sha256ctx;
-  char           buf[512];
-  ssize_t        bytes;
-  unsigned char* result;
-
-  if(-1 == size){
-    struct stat st;
-    if(-1 == fstat(fd, &st)){
-      return NULL;
+    if(-1 == fd){
+        return false;
     }
-    size = static_cast<ssize_t>(st.st_size);
-  }
-
-  sha256ctx = EVP_MD_CTX_create();
-  EVP_DigestInit_ex(sha256ctx, md, NULL);
-
-  memset(buf, 0, 512);
-  for(ssize_t total = 0; total < size; total += bytes){
-    bytes = 512 < (size - total) ? 512 : (size - total);
-    bytes = pread(fd, buf, bytes, start + total);
-    if(0 == bytes){
-      // end of file
-      break;
-    }else if(-1 == bytes){
-      // error
-      S3FS_PRN_ERR("file read error(%d)", errno);
-      EVP_MD_CTX_destroy(sha256ctx);
-      return NULL;
+    if(-1 == size){
+        struct stat st;
+        if(-1 == fstat(fd, &st)){
+            S3FS_PRN_ERR("fstat error(%d)", errno);
+            return false;
+        }
+        size = st.st_size;
     }
-    EVP_DigestUpdate(sha256ctx, buf, bytes);
-    memset(buf, 0, 512);
-  }
-  result = new unsigned char[get_sha256_digest_length()];
-  EVP_DigestFinal_ex(sha256ctx, result, NULL);
-  EVP_MD_CTX_destroy(sha256ctx);
 
-  return result;
+    sha256ctx = EVP_MD_CTX_create();
+    EVP_DigestInit_ex(sha256ctx, md, nullptr);
+
+    for(off_t total = 0; total < size; total += bytes){
+        std::array<char, 512> buf;
+        bytes = std::min(static_cast<off_t>(buf.size()), (size - total));
+        bytes = pread(fd, buf.data(), bytes, start + total);
+        if(0 == bytes){
+            // end of file
+            break;
+        }else if(-1 == bytes){
+            // error
+            S3FS_PRN_ERR("file read error(%d)", errno);
+            EVP_MD_CTX_destroy(sha256ctx);
+            return false;
+        }
+        EVP_DigestUpdate(sha256ctx, buf.data(), bytes);
+    }
+    EVP_DigestFinal_ex(sha256ctx, result->data(), nullptr);
+    EVP_MD_CTX_destroy(sha256ctx);
+
+    return true;
 }
 
 /*
@@ -333,6 +378,6 @@ unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size)
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/psemaphore.h

@@ -21,55 +21,91 @@
 #ifndef S3FS_SEMAPHORE_H_
 #define S3FS_SEMAPHORE_H_
 
+//-------------------------------------------------------------------
+// Class Semaphore
+//-------------------------------------------------------------------
 // portability wrapper for sem_t since macOS does not implement it
-
 #ifdef __APPLE__
 
 #include <dispatch/dispatch.h>
 
 class Semaphore
 {
-  public:
-    explicit Semaphore(int value) : value(value), sem(dispatch_semaphore_create(value)) {}
-    ~Semaphore() {
-      // macOS cannot destroy a semaphore with posts less than the initializer
-      for(int i = 0; i < get_value(); ++i){
-        post();
-      }
-      dispatch_release(sem);
-    }
-    void wait() { dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); }
-    void post() { dispatch_semaphore_signal(sem); }
-    int get_value() const { return value; }
-  private:
-    const int value;
-    dispatch_semaphore_t sem;
+    public:
+        explicit Semaphore(int value) : value(value), sem(dispatch_semaphore_create(value)) {}
+        ~Semaphore()
+        {
+            // macOS cannot destroy a semaphore with posts less than the initializer
+            for(int i = 0; i < get_value(); ++i){
+                post();
+            }
+            dispatch_release(sem);
+        }
+        Semaphore(const Semaphore&) = delete;
+        Semaphore(Semaphore&&) = delete;
+        Semaphore& operator=(const Semaphore&) = delete;
+        Semaphore& operator=(Semaphore&&) = delete;
+
+        void wait() { dispatch_semaphore_wait(sem, DISPATCH_TIME_FOREVER); }
+        bool try_wait()
+        {
+            if(0 == dispatch_semaphore_wait(sem, DISPATCH_TIME_NOW)){
+                return true;
+            }else{
+                return false;
+            }
+        }
+        void post() { dispatch_semaphore_signal(sem); }
+        int get_value() const { return value; }
+
+    private:
+        int value;
+        dispatch_semaphore_t sem;
 };
 
 #else
 
-#include <errno.h>
+#include <cerrno>
 #include <semaphore.h>
 
 class Semaphore
 {
-  public:
-    explicit Semaphore(int value) : value(value) { sem_init(&mutex, 0, value); }
-    ~Semaphore() { sem_destroy(&mutex); }
-    void wait()
-    {
-      int r;
-      do {
-        r = sem_wait(&mutex);
-      } while (r == -1 && errno == EINTR);
-    }
-    void post() { sem_post(&mutex); }
-    int get_value() const { return value; }
-  private:
-    const int value;
-    sem_t mutex;
+    public:
+        explicit Semaphore(int value) : value(value) { sem_init(&mutex, 0, value); }
+        ~Semaphore() { sem_destroy(&mutex); }
+        void wait()
+        {
+            int r;
+            do {
+                r = sem_wait(&mutex);
+            } while (r == -1 && errno == EINTR);
+        }
+        bool try_wait()
+        {
+            int result;
+            do{
+                result = sem_trywait(&mutex);
+            }while(result == -1 && errno == EINTR);
+
+            return (0 == result);
+        }
+        void post() { sem_post(&mutex); }
+        int get_value() const { return value; }
+
+    private:
+        int value;
+        sem_t mutex;
 };
 
 #endif
 
 #endif // S3FS_SEMAPHORE_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs.h

@@ -17,22 +17,21 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
-#ifndef S3FS_S3_H_
-#define S3FS_S3_H_
+
+#ifndef S3FS_S3FS_H_
+#define S3FS_S3FS_H_
 
 #define FUSE_USE_VERSION      26
 
-static const int64_t FIVE_GB = 5LL * 1024LL * 1024LL * 1024LL;
-
 #include <fuse.h>
 
 #define S3FS_FUSE_EXIT() \
-do{ \
-  struct fuse_context* pcxt = fuse_get_context(); \
-  if(pcxt){ \
-    fuse_exit(pcxt->fuse); \
-  } \
-}while(0)
+        do{ \
+            struct fuse_context* pcxt = fuse_get_context(); \
+            if(pcxt){ \
+                fuse_exit(pcxt->fuse); \
+            } \
+        }while(0)
 
 // [NOTE]
 // s3fs use many small allocated chunk in heap area for stats
@@ -60,34 +59,13 @@ do{ \
 #define S3FS_MALLOCTRIM(pad)
 #endif  // S3FS_MALLOC_TRIM
 
-#define S3FS_XMLFREEDOC(doc) \
-        do{ \
-          xmlFreeDoc(doc); \
-          S3FS_MALLOCTRIM(0); \
-        }while(0)
-#define S3FS_XMLFREE(ptr) \
-        do{ \
-          xmlFree(ptr); \
-          S3FS_MALLOCTRIM(0); \
-        }while(0)
-#define S3FS_XMLXPATHFREECONTEXT(ctx) \
-        do{ \
-          xmlXPathFreeContext(ctx); \
-          S3FS_MALLOCTRIM(0); \
-        }while(0)
-#define S3FS_XMLXPATHFREEOBJECT(obj) \
-        do{ \
-          xmlXPathFreeObject(obj); \
-          S3FS_MALLOCTRIM(0); \
-        }while(0)
-
-#endif // S3FS_S3_H_
+#endif // S3FS_S3FS_H_
 
 /*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/s3fs_auth.h

@@ -17,12 +17,18 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
+
 #ifndef S3FS_AUTH_H_
 #define S3FS_AUTH_H_
 
+#include <array>
+#include <memory>
 #include <string>
 #include <sys/types.h>
 
+typedef std::array<unsigned char, 16> md5_t;
+typedef std::array<unsigned char, 32> sha256_t;
+
 //-------------------------------------------------------------------
 // Utility functions for Authentication
 //-------------------------------------------------------------------
@@ -30,24 +36,22 @@
 // in common_auth.cpp
 //
 std::string s3fs_get_content_md5(int fd);
-std::string s3fs_md5sum(int fd, off_t start, ssize_t size);
-std::string s3fs_sha256sum(int fd, off_t start, ssize_t size);
+std::string s3fs_sha256_hex_fd(int fd, off_t start, off_t size);
 
 //
 // in xxxxxx_auth.cpp
 //
-const char* s3fs_crypt_lib_name(void);
-bool s3fs_init_global_ssl(void);
-bool s3fs_destroy_global_ssl(void);
-bool s3fs_init_crypt_mutex(void);
-bool s3fs_destroy_crypt_mutex(void);
-bool s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen);
-bool s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned char** digest, unsigned int* digestlen);
-size_t get_md5_digest_length(void);
-unsigned char* s3fs_md5hexsum(int fd, off_t start, ssize_t size);
-bool s3fs_sha256(const unsigned char* data, unsigned int datalen, unsigned char** digest, unsigned int* digestlen);
-size_t get_sha256_digest_length(void);
-unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size);
+const char* s3fs_crypt_lib_name();
+bool s3fs_init_global_ssl();
+bool s3fs_destroy_global_ssl();
+bool s3fs_init_crypt_mutex();
+bool s3fs_destroy_crypt_mutex();
+std::unique_ptr<unsigned char[]> s3fs_HMAC(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen);
+std::unique_ptr<unsigned char[]> s3fs_HMAC256(const void* key, size_t keylen, const unsigned char* data, size_t datalen, unsigned int* digestlen);
+bool s3fs_md5(const unsigned char* data, size_t datalen, md5_t* result);
+bool s3fs_md5_fd(int fd, off_t start, off_t size, md5_t* result);
+bool s3fs_sha256(const unsigned char* data, size_t datalen, sha256_t* digest);
+bool s3fs_sha256_fd(int fd, off_t start, off_t size, sha256_t* result);
 
 #endif // S3FS_AUTH_H_
 
@@ -56,6 +60,6 @@ unsigned char* s3fs_sha256hexsum(int fd, off_t start, ssize_t size);
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/s3fs_cred.h

@@ -0,0 +1,191 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_CRED_H_
+#define S3FS_CRED_H_
+
+#include <map>
+#include <mutex>
+#include <string>
+
+#include "common.h"
+#include "s3fs_extcred.h"
+#include "types.h"
+
+//----------------------------------------------
+// Typedefs
+//----------------------------------------------
+typedef std::map<std::string, std::string> iamcredmap_t;
+
+//------------------------------------------------
+// class S3fsCred
+//------------------------------------------------
+// This is a class for operating and managing Credentials(accesskey,
+// secret key, tokens, etc.) used by S3fs.
+// Operations related to Credentials are aggregated in this class.
+//
+// cppcheck-suppress ctuOneDefinitionRuleViolation       ; for stub in test_curl_util.cpp
+class S3fsCred
+{
+    private:
+        static constexpr char ALLBUCKET_FIELDS_TYPE[] = "";  // special key for mapping(This name is absolutely not used as a bucket name)
+        static constexpr char KEYVAL_FIELDS_TYPE[] = "\t";  // special key for mapping(This name is absolutely not used as a bucket name)
+        static constexpr char AWS_ACCESSKEYID[] = "AWSAccessKeyId";
+        static constexpr char AWS_SECRETKEY[] = "AWSSecretKey";
+
+        static constexpr int IAM_EXPIRE_MERGING = 20 * 60;  // update timing
+        static constexpr char ECS_IAM_ENV_VAR[] = "AWS_CONTAINER_CREDENTIALS_RELATIVE_URI";
+        static constexpr char IAMCRED_ACCESSKEYID[] = "AccessKeyId";
+        static constexpr char IAMCRED_SECRETACCESSKEY[] = "SecretAccessKey";
+        static constexpr char IAMCRED_ROLEARN[] = "RoleArn";
+
+        static std::string  bucket_name;
+
+        mutable std::mutex token_lock;
+
+        std::string         passwd_file;
+        std::string         aws_profile;
+
+        bool                load_iamrole;
+
+        std::string         AWSAccessKeyId GUARDED_BY(token_lock);
+        std::string         AWSSecretAccessKey GUARDED_BY(token_lock);
+        std::string         AWSAccessToken GUARDED_BY(token_lock);
+        time_t              AWSAccessTokenExpire GUARDED_BY(token_lock);
+
+        bool                is_ecs;
+        bool                is_use_session_token;
+        bool                is_ibm_iam_auth;
+
+        std::string         IAM_cred_url;
+        int                 IAM_api_version GUARDED_BY(token_lock);
+        std::string         IAMv2_api_token GUARDED_BY(token_lock);
+        size_t              IAM_field_count;
+        std::string         IAM_token_field;
+        std::string         IAM_expiry_field;
+        std::string         IAM_role GUARDED_BY(token_lock);
+
+        bool                set_builtin_cred_opts;  // true if options other than "credlib" is set
+        std::string         credlib;                // credlib(name or path)
+        std::string         credlib_opts;           // options for credlib
+
+        void*                    hExtCredLib;
+        fp_VersionS3fsCredential pFuncCredVersion;
+        fp_InitS3fsCredential    pFuncCredInit;
+        fp_FreeS3fsCredential    pFuncCredFree;
+        fp_UpdateS3fsCredential  pFuncCredUpdate;
+
+    public:
+        static constexpr char IAMv2_token_url[] = "http://169.254.169.254/latest/api/token";
+        static constexpr int IAMv2_token_ttl = 21600;
+        static constexpr char IAMv2_token_ttl_hdr[] = "X-aws-ec2-metadata-token-ttl-seconds";
+        static constexpr char IAMv2_token_hdr[] = "X-aws-ec2-metadata-token";
+
+    private:
+        static bool ParseIAMRoleFromMetaDataResponse(const char* response, std::string& rolename);
+
+        bool SetS3fsPasswdFile(const char* file);
+        bool IsSetPasswdFile() const;
+        bool SetAwsProfileName(const char* profile_name);
+        bool SetIAMRoleMetadataType(bool flag);
+
+        bool SetAccessKey(const char* AccessKeyId, const char* SecretAccessKey) REQUIRES(S3fsCred::token_lock);
+        bool SetAccessKeyWithSessionToken(const char* AccessKeyId, const char* SecretAccessKey, const char * SessionToken) REQUIRES(S3fsCred::token_lock);
+        bool IsSetAccessKeys() const REQUIRES(S3fsCred::token_lock);
+
+        bool SetIsECS(bool flag);
+        bool SetIsUseSessionToken(bool flag);
+
+        bool SetIsIBMIAMAuth(bool flag);
+
+        int SetIMDSVersion(int version) REQUIRES(S3fsCred::token_lock);
+        int GetIMDSVersion() const REQUIRES(S3fsCred::token_lock);
+
+        bool SetIAMv2APIToken(const std::string& token) REQUIRES(S3fsCred::token_lock);
+        const std::string& GetIAMv2APIToken() const REQUIRES(S3fsCred::token_lock);
+
+        bool SetIAMRole(const char* role) REQUIRES(S3fsCred::token_lock);
+        const std::string& GetIAMRole() const REQUIRES(S3fsCred::token_lock);
+        bool IsSetIAMRole() const REQUIRES(S3fsCred::token_lock);
+        size_t SetIAMFieldCount(size_t field_count);
+        std::string SetIAMCredentialsURL(const char* url);
+        std::string SetIAMTokenField(const char* token_field);
+        std::string SetIAMExpiryField(const char* expiry_field);
+
+        bool IsReadableS3fsPasswdFile() const;
+        bool CheckS3fsPasswdFilePerms();
+        bool ParseS3fsPasswdFile(bucketkvmap_t& resmap);
+        bool ReadS3fsPasswdFile() REQUIRES(S3fsCred::token_lock);
+
+        static int CheckS3fsCredentialAwsFormat(const kvmap_t& kvmap, std::string& access_key_id, std::string& secret_access_key);
+        bool ReadAwsCredentialFile(const std::string &filename) REQUIRES(S3fsCred::token_lock);
+
+        bool InitialS3fsCredentials() REQUIRES(S3fsCred::token_lock);
+        bool ParseIAMCredentialResponse(const char* response, iamcredmap_t& keyval);
+
+        bool GetIAMCredentialsURL(std::string& url, bool check_iam_role) REQUIRES(S3fsCred::token_lock);
+        bool LoadIAMCredentials() REQUIRES(S3fsCred::token_lock);
+        bool SetIAMCredentials(const char* response) REQUIRES(S3fsCred::token_lock);
+        bool SetIAMRoleFromMetaData(const char* response) REQUIRES(S3fsCred::token_lock);
+
+        bool SetExtCredLib(const char* arg);
+        bool IsSetExtCredLib() const;
+        bool SetExtCredLibOpts(const char* args);
+        bool IsSetExtCredLibOpts() const;
+
+        bool InitExtCredLib();
+        bool LoadExtCredLib();
+        bool UnloadExtCredLib();
+        bool UpdateExtCredentials() REQUIRES(S3fsCred::token_lock);
+
+        static bool CheckForbiddenBucketParams();
+
+    public:
+        static bool SetBucket(const std::string& bucket);
+        static const std::string& GetBucket();
+
+        S3fsCred();
+        ~S3fsCred();
+        S3fsCred(const S3fsCred&) = delete;
+        S3fsCred(S3fsCred&&) = delete;
+        S3fsCred& operator=(const S3fsCred&) = delete;
+        S3fsCred& operator=(S3fsCred&&) = delete;
+
+        bool IsIBMIAMAuth() const { return is_ibm_iam_auth; }
+
+        bool LoadIAMRoleFromMetaData();
+
+        bool CheckIAMCredentialUpdate(std::string* access_key_id = nullptr, std::string* secret_access_key = nullptr, std::string* access_token = nullptr);
+        const char* GetCredFuncVersion(bool detail) const;
+
+        int DetectParam(const char* arg);
+        bool CheckAllParams();
+};
+
+#endif // S3FS_CRED_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_extcred.h

@@ -0,0 +1,144 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_EXTCRED_H_
+#define S3FS_EXTCRED_H_
+
+//-------------------------------------------------------------------
+// Attributes(weak) : use only in s3fs-fuse internally
+//-------------------------------------------------------------------
+// [NOTE]
+// This macro is only used inside s3fs-fuse.
+// External projects that utilize this header file substitute empty
+//values as follows:
+//
+#ifndef	S3FS_FUNCATTR_WEAK
+#define	S3FS_FUNCATTR_WEAK
+#endif
+
+extern "C" {
+//-------------------------------------------------------------------
+// Prototype for External Credential 4 functions
+//-------------------------------------------------------------------
+//
+// [Required] VersionS3fsCredential
+//
+// Returns the library name and version as a string.
+//
+extern const char* VersionS3fsCredential(bool detail) S3FS_FUNCATTR_WEAK;
+
+//
+// [Optional] InitS3fsCredential
+//
+// A function that does the necessary initialization after the library is
+// loaded. This function is called only once immediately after loading the
+// library.
+// If there is a required initialization inside the library, implement it.
+// Implementation of this function is optional and not required. If not
+// implemented, it will not be called.
+//
+// const char* popts : String passed with the credlib_opts option. If the
+//                     credlib_opts option is not specified, nullptr will be
+//                     passed.
+// char** pperrstr   : pperrstr is used to pass the error message to the
+//                     caller when an error occurs.
+//                     If this pointer is not nullptr, you can allocate memory
+//                     and set an error message to it. The allocated memory
+//                     area is freed by the caller.
+//
+extern bool InitS3fsCredential(const char* popts, char** pperrstr) S3FS_FUNCATTR_WEAK;
+
+//
+// [Optional] FreeS3fsCredential
+//
+// A function that is called only once just before the library is unloaded.
+// If there is a required discard process in the library, implement it.
+// Implementation of this feature is optional and not required.
+// If not implemented, it will not be called.
+//
+// char** pperrstr : pperrstr is used to pass the error message to the
+//                   caller when an error occurs.
+//                   If this pointer is not nullptr, you can allocate memory
+//                   and set an error message to it. The allocated memory
+//                   area is freed by the caller.
+//
+extern bool FreeS3fsCredential(char** pperrstr) S3FS_FUNCATTR_WEAK;
+
+//
+// [Required] UpdateS3fsCredential
+//
+// A function that updates the token.
+//
+// char** ppaccess_key_id     : Allocate and set "Access Key ID" string
+//                              area to *ppaccess_key_id.
+// char** ppserect_access_key : Allocate and set "Access Secret Key ID"
+//                              string area to *ppserect_access_key.
+// char** ppaccess_token      : Allocate and set "Token" string area to
+//                              *ppaccess_token.
+// long long* ptoken_expire   : Set token expire time(time_t) value to
+//                              *ptoken_expire.
+//                              This is essentially a time_t* variable.
+//                              To avoid system differences about time_t
+//                              size, long long* is used.
+//                              When setting the value, cast from time_t
+//                              to long long to set the value.
+// char** pperrstr            : pperrstr is used to pass the error message to the
+//                              caller when an error occurs.
+//
+// For all argument of the character string pointer(char **) set the
+// allocated string area. The allocated area is freed by the caller.
+//
+extern bool UpdateS3fsCredential(char** ppaccess_key_id, char** ppserect_access_key, char** ppaccess_token, long long* ptoken_expire, char** pperrstr) S3FS_FUNCATTR_WEAK;
+
+//---------------------------------------------------------
+// Typedef Prototype function
+//---------------------------------------------------------
+//
+// const char* VersionS3fsCredential()
+//
+typedef const char* (*fp_VersionS3fsCredential)(bool detail);
+
+//
+// bool InitS3fsCredential(char** pperrstr)
+//
+typedef bool (*fp_InitS3fsCredential)(const char* popts, char** pperrstr);
+
+//
+// bool FreeS3fsCredential(char** pperrstr)
+//
+typedef bool (*fp_FreeS3fsCredential)(char** pperrstr);
+
+//
+// bool UpdateS3fsCredential(char** ppaccess_key_id, char** ppserect_access_key, char** ppaccess_token, long long* ptoken_expire, char** pperrstr)
+//
+typedef bool (*fp_UpdateS3fsCredential)(char** ppaccess_key_id, char** ppserect_access_key, char** ppaccess_token, long long* ptoken_expire, char** pperrstr);
+
+}   // extern "C"
+
+#endif // S3FS_EXTCRED_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_global.cpp

@@ -0,0 +1,47 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <string>
+
+#include "common.h"
+
+//-------------------------------------------------------------------
+// Global variables
+//-------------------------------------------------------------------
+bool foreground                   = false;
+bool nomultipart                  = false;
+bool pathrequeststyle             = false;
+bool complement_stat              = false;
+bool noxmlns                      = false;
+std::string program_name;
+std::string service_path          = "/";
+std::string s3host                = "https://s3.amazonaws.com";
+std::string endpoint              = "us-east-1";
+std::string cipher_suites;
+std::string instance_name;
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_help.cpp

@@ -0,0 +1,677 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+
+#include <string>
+
+#include "common.h"
+#include "s3fs_help.h"
+#include "s3fs_auth.h"
+
+//-------------------------------------------------------------------
+// Contents
+//-------------------------------------------------------------------
+static constexpr char help_string[] =
+    "\n"
+    "Mount an Amazon S3 bucket as a file system.\n"
+    "\n"
+    "Usage:\n"
+    "   mounting\n"
+    "     s3fs bucket[:/path] mountpoint [options]\n"
+    "     s3fs mountpoint [options (must specify bucket= option)]\n"
+    "\n"
+    "   unmounting\n"
+    "     umount mountpoint\n"
+    "\n"
+    "   General forms for s3fs and FUSE/mount options:\n"
+    "      -o opt[,opt...]\n"
+    "      -o opt [-o opt] ...\n"
+    "\n"
+    "   utility mode (remove interrupted multipart uploading objects)\n"
+    "     s3fs --incomplete-mpu-list (-u) bucket\n"
+    "     s3fs --incomplete-mpu-abort[=all | =<date format>] bucket\n"
+    "\n"
+    "s3fs Options:\n"
+    "\n"
+    "   Most s3fs options are given in the form where \"opt\" is:\n"
+    "\n"
+    "             <option_name>=<option_value>\n"
+    "\n"
+    "   bucket\n"
+    "      - if it is not specified bucket name (and path) in command line,\n"
+    "        must specify this option after -o option for bucket name.\n"
+    "\n"
+    "   default_acl (default=\"private\")\n"
+    "      - the default canned acl to apply to all written s3 objects,\n"
+    "        e.g., private, public-read. see\n"
+    "        https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl\n"
+    "        for the full list of canned ACLs\n"
+    "\n"
+    "   retries (default=\"5\")\n"
+    "      - number of times to retry a failed S3 transaction\n"
+    "\n"
+    "   tmpdir (default=\"/tmp\")\n"
+    "      - local folder for temporary files.\n"
+    "\n"
+    "   use_cache (default=\"\" which means disabled)\n"
+    "      - local folder to use for local file cache\n"
+    "\n"
+    "   check_cache_dir_exist (default is disable)\n"
+    "      - if use_cache is set, check if the cache directory exists.\n"
+    "        If this option is not specified, it will be created at runtime\n"
+    "        when the cache directory does not exist.\n"
+    "\n"
+    "   del_cache (delete local file cache)\n"
+    "      - delete local file cache when s3fs starts and exits.\n"
+    "\n"
+    "   storage_class (default=\"standard\")\n"
+    "      - store object with specified storage class. Possible values:\n"
+    "        standard, standard_ia, onezone_ia, reduced_redundancy,\n"
+    "        intelligent_tiering, glacier, glacier_ir, and deep_archive.\n"
+    "\n"
+    "   use_rrs (default is disable)\n"
+    "      - use Amazon's Reduced Redundancy Storage.\n"
+    "        this option can not be specified with use_sse.\n"
+    "        (can specify use_rrs=1 for old version)\n"
+    "        this option has been replaced by new storage_class option.\n"
+    "\n"
+    "   use_sse (default is disable)\n"
+    "      - Specify three type Amazon's Server-Site Encryption: SSE-S3,\n"
+    "        SSE-C or SSE-KMS. SSE-S3 uses Amazon S3-managed encryption\n"
+    "        keys, SSE-C uses customer-provided encryption keys, and\n"
+    "        SSE-KMS uses the master key which you manage in AWS KMS.\n"
+    "        You can specify \"use_sse\" or \"use_sse=1\" enables SSE-S3\n"
+    "        type (use_sse=1 is old type parameter).\n"
+    "        Case of setting SSE-C, you can specify \"use_sse=custom\",\n"
+    "        \"use_sse=custom:<custom key file path>\" or\n"
+    "        \"use_sse=<custom key file path>\" (only <custom key file path>\n"
+    "        specified is old type parameter). You can use \"c\" for\n"
+    "        short \"custom\".\n"
+    "        The custom key file must be 600 permission. The file can\n"
+    "        have some lines, each line is one SSE-C key. The first line\n"
+    "        in file is used as Customer-Provided Encryption Keys for\n"
+    "        uploading and changing headers etc. If there are some keys\n"
+    "        after first line, those are used downloading object which\n"
+    "        are encrypted by not first key. So that, you can keep all\n"
+    "        SSE-C keys in file, that is SSE-C key history.\n"
+    "        If you specify \"custom\" (\"c\") without file path, you\n"
+    "        need to set custom key by load_sse_c option or AWSSSECKEYS\n"
+    "        environment. (AWSSSECKEYS environment has some SSE-C keys\n"
+    "        with \":\" separator.) This option is used to decide the\n"
+    "        SSE type. So that if you do not want to encrypt a object\n"
+    "        object at uploading, but you need to decrypt encrypted\n"
+    "        object at downloading, you can use load_sse_c option instead\n"
+    "        of this option.\n"
+    "        For setting SSE-KMS, specify \"use_sse=kmsid\" or\n"
+    "        \"use_sse=kmsid:<kms id>\". You can use \"k\" for short \"kmsid\".\n"
+    "        If you san specify SSE-KMS type with your <kms id> in AWS\n"
+    "        KMS, you can set it after \"kmsid:\" (or \"k:\"). If you\n"
+    "        specify only \"kmsid\" (\"k\"), you need to set AWSSSEKMSID\n"
+    "        environment which value is <kms id>. You must be careful\n"
+    "        about that you can not use the KMS id which is not same EC2\n"
+    "        region.\n"
+    "        Additionally, if you specify SSE-KMS, your endpoints must use\n"
+    "        Secure Sockets Layer(SSL) or Transport Layer Security(TLS).\n"
+    "\n"
+    "   load_sse_c - specify SSE-C keys\n"
+    "        Specify the custom-provided encryption keys file path for decrypting\n"
+    "        at downloading.\n"
+    "        If you use the custom-provided encryption key at uploading, you\n"
+    "        specify with \"use_sse=custom\". The file has many lines, one line\n"
+    "        means one custom key. So that you can keep all SSE-C keys in file,\n"
+    "        that is SSE-C key history. AWSSSECKEYS environment is as same as this\n"
+    "        file contents.\n"
+    "\n"
+    "   public_bucket (default=\"\" which means disabled)\n"
+    "      - anonymously mount a public bucket when set to 1, ignores the \n"
+    "        $HOME/.passwd-s3fs and /etc/passwd-s3fs files.\n"
+    "        S3 does not allow copy object api for anonymous users, then\n"
+    "        s3fs sets nocopyapi option automatically when public_bucket=1\n"
+    "        option is specified.\n"
+    "\n"
+    "   passwd_file (default=\"\")\n"
+    "      - specify which s3fs password file to use\n"
+    "\n"
+    "   ahbe_conf (default=\"\" which means disabled)\n"
+    "      - This option specifies the configuration file path which\n"
+    "      file is the additional HTTP header by file (object) extension.\n"
+    "      The configuration file format is below:\n"
+    "      -----------\n"
+    "      line         = [file suffix or regex] HTTP-header [HTTP-values]\n"
+    "      file suffix  = file (object) suffix, if this field is empty,\n"
+    "                     it means \"reg:(.*)\".(=all object).\n"
+    "      regex        = regular expression to match the file (object) path.\n"
+    "                     this type starts with \"reg:\" prefix.\n"
+    "      HTTP-header  = additional HTTP header name\n"
+    "      HTTP-values  = additional HTTP header value\n"
+    "      -----------\n"
+    "      Sample:\n"
+    "      -----------\n"
+    "      .gz                    Content-Encoding  gzip\n"
+    "      .Z                     Content-Encoding  compress\n"
+    "      reg:^/MYDIR/(.*)[.]t2$ Content-Encoding  text2\n"
+    "      -----------\n"
+    "      A sample configuration file is uploaded in \"test\" directory.\n"
+    "      If you specify this option for set \"Content-Encoding\" HTTP \n"
+    "      header, please take care for RFC 2616.\n"
+    "\n"
+    "   profile (default=\"default\")\n"
+    "      - Choose a profile from ${HOME}/.aws/credentials to authenticate\n"
+    "        against S3. Note that this format matches the AWS CLI format and\n"
+    "        differs from the s3fs passwd format.\n"
+    "\n"
+    "   connect_timeout (default=\"300\" seconds)\n"
+    "      - time to wait for connection before giving up\n"
+    "\n"
+    "   readwrite_timeout (default=\"120\" seconds)\n"
+    "      - time to wait between read/write activity before giving up\n"
+    "\n"
+    "   list_object_max_keys (default=\"1000\")\n"
+    "      - specify the maximum number of keys returned by S3 list object\n"
+    "        API. The default is 1000. you can set this value to 1000 or more.\n"
+    "\n"
+    "   max_stat_cache_size (default=\"100,000\" entries (about 40MB))\n"
+    "      - maximum number of entries in the stat cache, and this maximum is\n"
+    "        also treated as the number of symbolic link cache.\n"
+    "\n"
+    "   stat_cache_expire (default is 900))\n"
+    "      - specify expire time (seconds) for entries in the stat cache.\n"
+    "        This expire time indicates the time since stat cached. and this\n"
+    "        is also set to the expire time of the symbolic link cache.\n"
+    "\n"
+    "   stat_cache_interval_expire (default is 900)\n"
+    "      - specify expire time (seconds) for entries in the stat cache(and\n"
+    "        symbolic link cache).\n"
+    "      This expire time is based on the time from the last access time\n"
+    "      of the stat cache. This option is exclusive with stat_cache_expire,\n"
+    "      and is left for compatibility with older versions.\n"
+    "\n"
+    "   disable_noobj_cache (default is enable)\n"
+    "      - By default s3fs memorizes when an object does not exist up until\n"
+    "        the stat cache timeout.  This caching can cause staleness for\n"
+    "        applications.  If disabled, s3fs will not memorize objects and may\n"
+    "        cause extra HeadObject requests and reduce performance.\n"
+    "\n"
+    "   no_check_certificate\n"
+    "      - server certificate won't be checked against the available \n"
+    "      certificate authorities.\n"
+    "\n"
+    "   ssl_verify_hostname (default=\"2\")\n"
+    "      - When 0, do not verify the SSL certificate against the hostname.\n"
+    "\n"
+    "   ssl_client_cert (default=\"\")\n"
+    "      - Specify an SSL client certificate.\n"
+    "      Specify this optional parameter in the following format:\n"
+    "      \"<SSL Cert>[:<Cert Type>[:<Private Key>[:<Key Type>\n"
+    "                                                   [:<Password>]]]]\"\n"
+    "      <SSL Cert>:    Client certificate.\n"
+    "                     Specify the file path or NickName(for NSS, etc.).\n"
+    "      <Cert Type>:   Type of certificate, default is \"PEM\"(optional).\n"
+    "      <Private Key>: Certificate's private key file(optional).\n"
+    "      <Key Type>:    Type of private key, default is \"PEM\"(optional).\n"
+    "      <Password>:    Passphrase of the private key(optional).\n"
+    "                     It is also possible to omit this value and specify\n"
+    "                     it using the environment variable\n"
+    "                     \"S3FS_SSL_PRIVKEY_PASSWORD\".\n"
+    "\n"
+    "   nodnscache (disable DNS cache)\n"
+    "      - s3fs is always using DNS cache, this option make DNS cache disable.\n"
+    "\n"
+    "   nosscache (disable SSL session cache)\n"
+    "      - s3fs is always using SSL session cache, this option make SSL \n"
+    "      session cache disable.\n"
+    "\n"
+    "   multireq_max (default=\"20\")\n"
+    "      - maximum number of parallel request for listing objects.\n"
+    "\n"
+    "   parallel_count (default=\"5\")\n"
+    "      - number of parallel request for uploading big objects.\n"
+    "      s3fs uploads large object (over 20MB) by multipart post request, \n"
+    "      and sends parallel requests.\n"
+    "      This option limits parallel request count which s3fs requests \n"
+    "      at once. It is necessary to set this value depending on a CPU \n"
+    "      and a network band.\n"
+    "\n"
+    "   multipart_size (default=\"10\")\n"
+    "      - part size, in MB, for each multipart request.\n"
+    "      The minimum value is 5 MB and the maximum value is 5 GB.\n"
+    "\n"
+    "   multipart_copy_size (default=\"512\")\n"
+    "      - part size, in MB, for each multipart copy request, used for\n"
+    "      renames and mixupload.\n"
+    "      The minimum value is 5 MB and the maximum value is 5 GB.\n"
+    "      Must be at least 512 MB to copy the maximum 5 TB object size\n"
+    "      but lower values may improve performance.\n"
+    "\n"
+    "   max_dirty_data (default=\"5120\")\n"
+    "      - flush dirty data to S3 after a certain number of MB written.\n"
+    "      The minimum value is 50 MB. -1 value means disable.\n"
+    "      Cannot be used with nomixupload.\n"
+    "\n"
+    "   bucket_size (default=maximum long unsigned integer value)\n"
+    "      - The size of the bucket with which the corresponding\n"
+    "      elements of the statvfs structure will be filled. The option\n"
+    "      argument is an integer optionally followed by a\n"
+    "      multiplicative suffix (GB, GiB, TB, TiB, PB, PiB,\n"
+    "      EB, EiB) (no spaces in between). If no suffix is supplied,\n"
+    "      bytes are assumed; eg: 20000000, 30GB, 45TiB. Note that\n"
+    "      s3fs does not compute the actual volume size (too\n"
+    "      expensive): by default it will assume the maximum possible\n"
+    "      size; however, since this may confuse other software which\n"
+    "      uses s3fs, the advertised bucket size can be set with this\n"
+    "      option.\n"
+    "\n"
+    "   ensure_diskfree (default 0)\n"
+    "      - sets MB to ensure disk free space. This option means the\n"
+    "        threshold of free space size on disk which is used for the\n"
+    "        cache file by s3fs. s3fs makes file for\n"
+    "        downloading, uploading and caching files. If the disk free\n"
+    "        space is smaller than this value, s3fs do not use disk space\n"
+    "        as possible in exchange for the performance.\n"
+    "\n"
+    "   free_space_ratio (default=\"10\")\n"
+    "      - sets min free space ratio of the disk.\n"
+    "      The value of this option can be between 0 and 100. It will control\n"
+    "      the size of the cache according to this ratio to ensure that the\n"
+    "      idle ratio of the disk is greater than this value.\n"
+    "      For example, when the disk space is 50GB, the default value will\n"
+    "      ensure that the disk will reserve at least 50GB * 10%% = 5GB of\n"
+    "      remaining space.\n"
+    "\n"
+    "   multipart_threshold (default=\"25\")\n"
+    "      - threshold, in MB, to use multipart upload instead of\n"
+    "        single-part. Must be at least 5 MB.\n"
+    "\n"
+    "   singlepart_copy_limit (default=\"512\")\n"
+    "      - maximum size, in MB, of a single-part copy before trying \n"
+    "      multipart copy.\n"
+    "\n"
+    "   host (default=\"https://s3.amazonaws.com\")\n"
+    "      - Set a non-Amazon host, e.g., https://example.com.\n"
+    "\n"
+    "   servicepath (default=\"/\")\n"
+    "      - Set a service path when the non-Amazon host requires a prefix.\n"
+    "\n"
+    "   url (default=\"https://s3.amazonaws.com\")\n"
+    "      - sets the url to use to access Amazon S3. If you want to use HTTP,\n"
+    "        then you can set \"url=http://s3.amazonaws.com\".\n"
+    "        If you do not use https, please specify the URL with the url\n"
+    "        option.\n"
+    "\n"
+    "   endpoint (default=\"us-east-1\")\n"
+    "      - sets the endpoint to use on signature version 4\n"
+    "      If this option is not specified, s3fs uses \"us-east-1\" region as\n"
+    "      the default. If the s3fs could not connect to the region specified\n"
+    "      by this option, s3fs could not run. But if you do not specify this\n"
+    "      option, and if you can not connect with the default region, s3fs\n"
+    "      will retry to automatically connect to the other region. So s3fs\n"
+    "      can know the correct region name, because s3fs can find it in an\n"
+    "      error from the S3 server.\n"
+    "\n"
+    "   sigv2 (default is signature version 4 falling back to version 2)\n"
+    "      - sets signing AWS requests by using only signature version 2\n"
+    "\n"
+    "   sigv4 (default is signature version 4 falling back to version 2)\n"
+    "      - sets signing AWS requests by using only signature version 4\n"
+    "\n"
+    "   mp_umask (default is \"0000\")\n"
+    "      - sets umask for the mount point directory.\n"
+    "      If allow_other option is not set, s3fs allows access to the mount\n"
+    "      point only to the owner. In the opposite case s3fs allows access\n"
+    "      to all users as the default. But if you set the allow_other with\n"
+    "      this option, you can control the permissions of the\n"
+    "      mount point by this option like umask.\n"
+    "\n"
+    "   umask (default is \"0000\")\n"
+    "      - sets umask for files under the mountpoint. This can allow\n"
+    "      users other than the mounting user to read and write to files\n"
+    "      that they did not create.\n"
+    "\n"
+    "   nomultipart (disable multipart uploads)\n"
+    "\n"
+    "   streamupload (default is disable)\n"
+    "      - Enable stream upload.\n"
+    "      If this option is enabled, a sequential upload will be performed\n"
+    "      in parallel with the write from the part that has been written\n"
+    "      during a multipart upload.\n"
+    "      This is expected to give better performance than other upload\n"
+    "      functions.\n"
+    "      Note that this option is still experimental and may change in the\n"
+    "      future.\n"
+    "\n"
+    "   max_thread_count (default is \"5\")\n"
+    "      - Specifies the number of threads waiting for stream uploads.\n"
+    "      Note that this option and Stream Upload are still experimental\n"
+    "      and subject to change in the future.\n"
+    "      This option will be merged with \"parallel_count\" in the future.\n"
+    "\n"
+    "   enable_content_md5 (default is disable)\n"
+    "      - Allow S3 server to check data integrity of uploads via the\n"
+    "      Content-MD5 header. This can add CPU overhead to transfers.\n"
+    "\n"
+    "   enable_unsigned_payload (default is disable)\n"
+    "      - Do not calculate Content-SHA256 for PutObject and UploadPart\n"
+    "      payloads. This can reduce CPU overhead to transfers.\n"
+    "\n"
+    "   ecs (default is disable)\n"
+    "      - This option instructs s3fs to query the ECS container credential\n"
+    "      metadata address instead of the instance metadata address.\n"
+    "\n"
+    "   iam_role (default is no IAM role)\n"
+    "      - This option requires the IAM role name or \"auto\". If you specify\n"
+    "      \"auto\", s3fs will automatically use the IAM role names that are set\n"
+    "      to an instance. If you specify this option without any argument, it\n"
+    "      is the same as that you have specified the \"auto\".\n"
+    "\n"
+    "   imdsv1only (default is to use IMDSv2 with fallback to v1)\n"
+    "      - AWS instance metadata service, used with IAM role authentication,\n"
+    "      supports the use of an API token. If you're using an IAM role\n"
+    "      in an environment that does not support IMDSv2, setting this flag\n"
+    "      will skip retrieval and usage of the API token when retrieving\n"
+    "      IAM credentials.\n"
+    "\n"
+    "   ibm_iam_auth (default is not using IBM IAM authentication)\n"
+    "      - This option instructs s3fs to use IBM IAM authentication.\n"
+    "      In this mode, the AWSAccessKey and AWSSecretKey will be used as\n"
+    "      IBM's Service-Instance-ID and APIKey, respectively.\n"
+    "\n"
+    "   ibm_iam_endpoint (default is https://iam.cloud.ibm.com)\n"
+    "      - sets the URL to use for IBM IAM authentication.\n"
+    "\n"
+    "   credlib (default=\"\" which means disabled)\n"
+    "      - Specifies the shared library that handles the credentials\n"
+    "      containing the authentication token.\n"
+    "      If this option is specified, the specified credential and token\n"
+    "      processing provided by the shared library ant will be performed\n"
+    "      instead of the built-in credential processing.\n"
+    "      This option cannot be specified with passwd_file, profile,\n"
+    "      use_session_token, ecs, ibm_iam_auth, ibm_iam_endpoint, imdsv1only\n"
+    "      and iam_role option.\n"
+    "\n"
+    "   credlib_opts (default=\"\" which means disabled)\n"
+    "      - Specifies the options to pass when the shared library specified\n"
+    "      in credlib is loaded and then initialized.\n"
+    "      For the string specified in this option, specify the string defined\n"
+    "      by the shared library.\n"
+    "\n"
+    "   use_xattr (default is not handling the extended attribute)\n"
+    "      Enable to handle the extended attribute (xattrs).\n"
+    "      If you set this option, you can use the extended attribute.\n"
+    "      For example, encfs and ecryptfs need to support the extended attribute.\n"
+    "      Notice: if s3fs handles the extended attribute, s3fs can not work to\n"
+    "      copy command with preserve=mode.\n"
+    "\n"
+    "   noxmlns (disable registering xml name space)\n"
+    "        disable registering xml name space for response of \n"
+    "        ListBucketResult and ListVersionsResult etc. Default name \n"
+    "        space is looked up from \"http://s3.amazonaws.com/doc/2006-03-01\".\n"
+    "        This option should not be specified now, because s3fs looks up\n"
+    "        xmlns automatically after v1.66.\n"
+    "\n"
+    "   nomixupload (disable copy in multipart uploads)\n"
+    "        Disable to use PUT (copy api) when multipart uploading large size objects.\n"
+    "        By default, when doing multipart upload, the range of unchanged data\n"
+    "        will use PUT (copy api) whenever possible.\n"
+    "        When nocopyapi or norenameapi is specified, use of PUT (copy api) is\n"
+    "        invalidated even if this option is not specified.\n"
+    "\n"
+    "   nocopyapi (for other incomplete compatibility object storage)\n"
+    "        Enable compatibility with S3-like APIs which do not support\n"
+    "        PUT (copy api).\n"
+    "        If you set this option, s3fs do not use PUT with \n"
+    "        \"x-amz-copy-source\" (copy api). Because traffic is increased\n"
+    "        2-3 times by this option, we do not recommend this.\n"
+    "\n"
+    "   norenameapi (for other incomplete compatibility object storage)\n"
+    "        Enable compatibility with S3-like APIs which do not support\n"
+    "        PUT (copy api).\n"
+    "        This option is a subset of nocopyapi option. The nocopyapi\n"
+    "        option does not use copy-api for all command (ex. chmod, chown,\n"
+    "        touch, mv, etc), but this option does not use copy-api for\n"
+    "        only rename command (ex. mv). If this option is specified with\n"
+    "        nocopyapi, then s3fs ignores it.\n"
+    "\n"
+    "   use_path_request_style (use legacy API calling style)\n"
+    "        Enable compatibility with S3-like APIs which do not support\n"
+    "        the virtual-host request style, by using the older path request\n"
+    "        style.\n"
+    "\n"
+    "   listobjectsv2 (use ListObjectsV2)\n"
+    "        Issue ListObjectsV2 instead of ListObjects, useful on object\n"
+    "        stores without ListObjects support.\n"
+    "\n"
+    "   noua (suppress User-Agent header)\n"
+    "        Usually s3fs outputs of the User-Agent in \"s3fs/<version> (commit\n"
+    "        hash <hash>; <using ssl library name>)\" format.\n"
+    "        If this option is specified, s3fs suppresses the output of the\n"
+    "        User-Agent.\n"
+    "\n"
+    "   cipher_suites\n"
+    "        Customize the list of TLS cipher suites.\n"
+    "        Expects a colon separated list of cipher suite names.\n"
+    "        A list of available cipher suites, depending on your TLS engine,\n"
+    "        can be found on the CURL library documentation:\n"
+    "        https://curl.haxx.se/docs/ssl-ciphers.html\n"
+    "\n"
+    "   instance_name - The instance name of the current s3fs mountpoint.\n"
+    "        This name will be added to logging messages and user agent headers sent by s3fs.\n"
+    "\n"
+    "   complement_stat (complement lack of file/directory mode)\n"
+    "        s3fs complements lack of information about file/directory mode\n"
+    "        if a file or a directory object does not have x-amz-meta-mode\n"
+    "        header. As default, s3fs does not complements stat information\n"
+    "        for a object, then the object will not be able to be allowed to\n"
+    "        list/modify.\n"
+    "\n"
+    "   compat_dir (enable support of alternative directory names)\n"
+    "        s3fs supports two different naming schemas \"dir/\" and\n"
+    "        \"dir\" to map directory names to S3 objects and\n"
+    "        vice versa by default. As a third variant, directories can be\n"
+    "        determined indirectly if there is a file object with a path (e.g.\n"
+    "        \"/dir/file\") but without the parent directory.\n"
+    "        This option enables a fourth variant, \"dir_$folder$\", created by\n"
+    "        older applications.\n"
+    "        \n"
+    "        S3fs uses only the first schema \"dir/\" to create S3 objects for\n"
+    "        directories."
+    "        \n"
+    "        The support for these different naming schemas causes an increased\n"
+    "        communication effort.\n"
+    "\n"
+    "   use_wtf8 - support arbitrary file system encoding.\n"
+    "        S3 requires all object names to be valid UTF-8. But some\n"
+    "        clients, notably Windows NFS clients, use their own encoding.\n"
+    "        This option re-encodes invalid UTF-8 object names into valid\n"
+    "        UTF-8 by mapping offending codes into a 'private' codepage of the\n"
+    "        Unicode set.\n"
+    "        Useful on clients not using UTF-8 as their file system encoding.\n"
+    "\n"
+    "   use_session_token - indicate that session token should be provided.\n"
+    "        If credentials are provided by environment variables this switch\n"
+    "        forces presence check of AWSSESSIONTOKEN variable.\n"
+    "        Otherwise an error is returned.\n"
+    "\n"
+    "   requester_pays (default is disable)\n"
+    "        This option instructs s3fs to enable requests involving\n"
+    "        Requester Pays buckets.\n"
+    "        It includes the 'x-amz-request-payer=requester' entry in the\n"
+    "        request header.\n"
+    "\n"
+    "   mime (default is \"/etc/mime.types\")\n"
+    "        Specify the path of the mime.types file.\n"
+    "        If this option is not specified, the existence of \"/etc/mime.types\"\n"
+    "        is checked, and that file is loaded as mime information.\n"
+    "        If this file does not exist on macOS, then \"/etc/apache2/mime.types\"\n"
+    "        is checked as well.\n"
+    "\n"
+    "   proxy (default=\"\")\n"
+    "        This option specifies a proxy to S3 server.\n"
+    "        Specify the proxy with '[<scheme://]hostname(fqdn)[:<port>]' formatted.\n"
+    "        '<schema>://' can be omitted, and 'http://' is used when omitted.\n"
+    "        Also, ':<port>' can also be omitted. If omitted, port 443 is used for\n"
+    "        HTTPS schema, and port 1080 is used otherwise.\n"
+    "        This option is the same as the curl command's '--proxy(-x)' option and\n"
+    "        libcurl's 'CURLOPT_PROXY' flag.\n"
+    "        This option is equivalent to and takes precedence over the environment\n"
+    "        variables 'http_proxy', 'all_proxy', etc.\n"
+    "\n"
+    "   proxy_cred_file (default=\"\")\n"
+    "        This option specifies the file that describes the username and\n"
+    "        passphrase for authentication of the proxy when the HTTP schema\n"
+    "        proxy is specified by the 'proxy' option.\n"
+    "        Username and passphrase are valid only for HTTP schema. If the HTTP\n"
+    "        proxy does not require authentication, this option is not required.\n"
+    "        Separate the username and passphrase with a ':' character and\n"
+    "        specify each as a URL-encoded string.\n"
+    "\n"
+    "   ipresolve (default=\"whatever\")\n"
+    "        Select what type of IP addresses to use when establishing a\n"
+    "        connection.\n"
+    "        Default('whatever') can use addresses of all IP versions(IPv4 and\n"
+    "        IPv6) that your system allows. If you specify 'IPv4', only IPv4\n"
+    "        addresses are used. And when 'IPv6'is specified, only IPv6 addresses\n"
+    "        will be used.\n"
+    "\n"
+    "   logfile - specify the log output file.\n"
+    "        s3fs outputs the log file to syslog. Alternatively, if s3fs is\n"
+    "        started with the \"-f\" option specified, the log will be output\n"
+    "        to the stdout/stderr.\n"
+    "        You can use this option to specify the log file that s3fs outputs.\n"
+    "        If you specify a log file with this option, it will reopen the log\n"
+    "        file when s3fs receives a SIGHUP signal. You can use the SIGHUP\n"
+    "        signal for log rotation.\n"
+    "\n"
+    "   dbglevel (default=\"crit\")\n"
+    "        Set the debug message level. set value as crit (critical), err\n"
+    "        (error), warn (warning), info (information) to debug level.\n"
+    "        default debug level is critical. If s3fs run with \"-d\" option,\n"
+    "        the debug level is set information. When s3fs catch the signal\n"
+    "        SIGUSR2, the debug level is bump up.\n"
+    "\n"
+    "   curldbg - put curl debug message\n"
+    "        Put the debug message from libcurl when this option is specified.\n"
+    "        Specify \"normal\" or \"body\" for the parameter.\n"
+    "        If the parameter is omitted, it is the same as \"normal\".\n"
+    "        If \"body\" is specified, some API communication body data will be\n"
+    "        output in addition to the debug message output as \"normal\".\n"
+    "\n"
+    "   no_time_stamp_msg - no time stamp in debug message\n"
+    "        The time stamp is output to the debug message by default.\n"
+    "        If this option is specified, the time stamp will not be output\n"
+    "        in the debug message.\n"
+    "        It is the same even if the environment variable \"S3FS_MSGTIMESTAMP\"\n"
+    "        is set to \"no\".\n"
+    "\n"
+    "   set_check_cache_sigusr1 (default is stdout)\n"
+    "        If the cache is enabled, you can check the integrity of the\n"
+    "        cache file and the cache file's stats info file.\n"
+    "        This option is specified and when sending the SIGUSR1 signal\n"
+    "        to the s3fs process checks the cache status at that time.\n"
+    "        This option can take a file path as parameter to output the\n"
+    "        check result to that file. The file path parameter can be omitted.\n"
+    "        If omitted, the result will be output to stdout or syslog.\n"
+    "\n"
+    "   update_parent_dir_stat (default is disable)\n"
+    "        The parent directory's mtime and ctime are updated when a file or\n"
+    "        directory is created or deleted (when the parent directory's inode is\n"
+    "        updated).\n"
+    "        By default, parent directory statistics are not updated.\n"
+    "\n"
+    "FUSE/mount Options:\n"
+    "\n"
+    "   Most of the generic mount options described in 'man mount' are\n"
+    "   supported (ro, rw, suid, nosuid, dev, nodev, exec, noexec, atime,\n"
+    "   noatime, sync async, dirsync). Filesystems are mounted with\n"
+    "   '-onodev,nosuid' by default, which can only be overridden by a\n"
+    "   privileged user.\n"
+    "   \n"
+    "   There are many FUSE specific mount options that can be specified.\n"
+    "   e.g. allow_other  See the FUSE's README for the full set.\n"
+    "\n"
+    "Utility mode Options:\n"
+    "\n"
+    " -u, --incomplete-mpu-list\n"
+    "        Lists multipart incomplete objects uploaded to the specified\n"
+    "        bucket.\n"
+    " --incomplete-mpu-abort (=all or =<date format>)\n"
+    "        Delete the multipart incomplete object uploaded to the specified\n"
+    "        bucket.\n"
+    "        If \"all\" is specified for this option, all multipart incomplete\n"
+    "        objects will be deleted. If you specify no argument as an option,\n"
+    "        objects older than 24 hours (24H) will be deleted (This is the\n"
+    "        default value). You can specify an optional date format. It can\n"
+    "        be specified as year, month, day, hour, minute, second, and it is\n"
+    "        expressed as \"Y\", \"M\", \"D\", \"h\", \"m\", \"s\" respectively.\n"
+    "        For example, \"1Y6M10D12h30m30s\".\n"
+    "\n"
+    "Miscellaneous Options:\n"
+    "\n"
+    " -h, --help        Output this help.\n"
+    "     --version     Output version info.\n"
+    " -d  --debug       Turn on DEBUG messages to syslog. Specifying -d\n"
+    "                   twice turns on FUSE debug messages to STDOUT.\n"
+    " -f                FUSE foreground option - do not run as daemon.\n"
+    " -s                FUSE single-threaded option\n"
+    "                   disable multi-threaded operation\n"
+    "\n"
+    "\n"
+    "s3fs home page: <https://github.com/s3fs-fuse/s3fs-fuse>\n"
+    ;
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+void show_usage()
+{
+    printf("Usage: %s BUCKET:[PATH] MOUNTPOINT [OPTION]...\n", program_name.c_str());
+}
+
+void show_help()
+{
+    show_usage();
+    printf(help_string);
+}
+
+void show_version()
+{
+    printf(
+    "Amazon Simple Storage Service File System V%s%s with %s\n"
+    "Copyright (C) 2010 Randy Rizun <rrizun@gmail.com>\n"
+    "License GPL2: GNU GPL version 2 <https://gnu.org/licenses/gpl.html>\n"
+    "This is free software: you are free to change and redistribute it.\n"
+    "There is NO WARRANTY, to the extent permitted by law.\n",
+    VERSION, COMMIT_HASH_VAL, s3fs_crypt_lib_name());
+}
+
+const char* short_version()
+{
+    static constexpr char short_ver[] = "s3fs version " VERSION "" COMMIT_HASH_VAL;
+    return short_ver;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_help.h

@@ -0,0 +1,41 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_S3FS_HELP_H_
+#define S3FS_S3FS_HELP_H_
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+void show_usage();
+void show_help();
+void show_version();
+const char* short_version();
+
+#endif // S3FS_S3FS_HELP_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_logger.cpp

@@ -0,0 +1,307 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdlib>
+#include <iomanip>
+#include <memory>
+#include <sstream>
+#include <string>
+#include <strings.h>
+
+#include "common.h"
+#include "s3fs_logger.h"
+
+//-------------------------------------------------------------------
+// S3fsLog class : variables
+//-------------------------------------------------------------------
+constexpr char          S3fsLog::LOGFILEENV[];
+constexpr const char*   S3fsLog::nest_spaces[];
+constexpr char          S3fsLog::MSGTIMESTAMP[];
+S3fsLog*                S3fsLog::pSingleton       = nullptr;
+S3fsLog::s3fs_log_level S3fsLog::debug_level      = S3fsLog::LEVEL_CRIT;
+FILE*                   S3fsLog::logfp            = nullptr;
+std::string             S3fsLog::logfile;
+bool                    S3fsLog::time_stamp       = true;
+
+//-------------------------------------------------------------------
+// S3fsLog class : class methods
+//-------------------------------------------------------------------
+bool S3fsLog::IsS3fsLogLevel(s3fs_log_level level)
+{
+    return (level == (S3fsLog::debug_level & level));
+}
+
+std::string S3fsLog::GetCurrentTime()
+{
+    std::ostringstream current_time;
+    if(time_stamp){
+        struct timeval  now;
+        struct timespec tsnow;
+        struct tm res;
+        char   tmp[32];
+        if(-1 == clock_gettime(S3FS_CLOCK_MONOTONIC, &tsnow)){
+            now.tv_sec  = tsnow.tv_sec;
+            now.tv_usec = (tsnow.tv_nsec / 1000);
+        }else{
+            gettimeofday(&now, nullptr);
+        }
+        strftime(tmp, sizeof(tmp), "%Y-%m-%dT%H:%M:%S", gmtime_r(&now.tv_sec, &res));
+        current_time << tmp << "." << std::setfill('0') << std::setw(3) << (now.tv_usec / 1000) << "Z ";
+    }
+    return current_time.str();
+}
+
+bool S3fsLog::SetLogfile(const char* pfile)
+{
+    if(!S3fsLog::pSingleton){
+        S3FS_PRN_CRIT("S3fsLog::pSingleton is nullptr.");
+        return false;
+    }
+    return S3fsLog::pSingleton->LowSetLogfile(pfile);
+}
+
+bool S3fsLog::ReopenLogfile()
+{
+    if(!S3fsLog::pSingleton){
+        S3FS_PRN_CRIT("S3fsLog::pSingleton is nullptr.");
+        return false;
+    }
+    if(!S3fsLog::logfp){
+        S3FS_PRN_INFO("Currently the log file is output to stdout/stderr.");
+        return true;
+    }
+    if(!S3fsLog::logfile.empty()){
+        S3FS_PRN_ERR("There is a problem with the path to the log file being empty.");
+        return false;
+    }
+    std::string tmp = S3fsLog::logfile;
+    return S3fsLog::pSingleton->LowSetLogfile(tmp.c_str());
+}
+
+S3fsLog::s3fs_log_level S3fsLog::SetLogLevel(s3fs_log_level level)
+{
+    if(!S3fsLog::pSingleton){
+        S3FS_PRN_CRIT("S3fsLog::pSingleton is nullptr.");
+        return S3fsLog::debug_level;    // Although it is an error, it returns the current value.
+    }
+    return S3fsLog::pSingleton->LowSetLogLevel(level);
+}
+
+S3fsLog::s3fs_log_level S3fsLog::BumpupLogLevel()
+{
+    if(!S3fsLog::pSingleton){
+        S3FS_PRN_CRIT("S3fsLog::pSingleton is nullptr.");
+        return S3fsLog::debug_level;    // Although it is an error, it returns the current value.
+    }
+    return S3fsLog::pSingleton->LowBumpupLogLevel();
+}
+
+bool S3fsLog::SetTimeStamp(bool value)
+{
+    bool old = S3fsLog::time_stamp;
+    S3fsLog::time_stamp = value;
+    return old;
+}
+
+//-------------------------------------------------------------------
+// S3fsLog class : methods
+//-------------------------------------------------------------------
+S3fsLog::S3fsLog()
+{
+    if(!S3fsLog::pSingleton){
+        S3fsLog::pSingleton = this;
+
+        // init syslog(default CRIT)
+        openlog("s3fs", LOG_PID | LOG_ODELAY | LOG_NOWAIT, LOG_USER);
+        LowLoadEnv();
+    }else{
+        S3FS_PRN_ERR("Already set singleton object for S3fsLog.");
+    }
+}
+
+S3fsLog::~S3fsLog()
+{
+    if(S3fsLog::pSingleton == this){
+        FILE*    oldfp = S3fsLog::logfp;
+        S3fsLog::logfp = nullptr;
+        if(oldfp && 0 != fclose(oldfp)){
+            S3FS_PRN_ERR("Could not close old log file(%s), but continue...", (S3fsLog::logfile.empty() ? S3fsLog::logfile.c_str() : "null"));
+        }
+        S3fsLog::logfile.clear();
+        S3fsLog::pSingleton  = nullptr;
+        S3fsLog::debug_level = S3fsLog::LEVEL_CRIT;
+
+        closelog();
+    }else{
+        S3FS_PRN_ERR("This object is not singleton S3fsLog object.");
+    }
+}
+
+bool S3fsLog::LowLoadEnv()
+{
+    if(S3fsLog::pSingleton != this){
+        S3FS_PRN_ERR("This object is not as same as S3fsLog::pSingleton.");
+        return false;
+    }
+    char*    pEnvVal;
+    if(nullptr != (pEnvVal = getenv(S3fsLog::LOGFILEENV))){
+        if(!SetLogfile(pEnvVal)){
+            return false;
+        }
+    }
+    if(nullptr != (pEnvVal = getenv(S3fsLog::MSGTIMESTAMP))){
+        if(0 == strcasecmp(pEnvVal, "true") || 0 == strcasecmp(pEnvVal, "yes") || 0 == strcasecmp(pEnvVal, "1")){
+            S3fsLog::time_stamp = true;
+        }else if(0 == strcasecmp(pEnvVal, "false") || 0 == strcasecmp(pEnvVal, "no") || 0 == strcasecmp(pEnvVal, "0")){
+            S3fsLog::time_stamp = false;
+        }else{
+            S3FS_PRN_WARN("Unknown %s environment value(%s) is specified, skip to set time stamp mode.", S3fsLog::MSGTIMESTAMP, pEnvVal);
+        }
+    }
+    return true;
+}
+
+bool S3fsLog::LowSetLogfile(const char* pfile)
+{
+    if(S3fsLog::pSingleton != this){
+        S3FS_PRN_ERR("This object is not as same as S3fsLog::pSingleton.");
+        return false;
+    }
+
+    if(!pfile){
+        // close log file if it is opened
+        if(S3fsLog::logfp && 0 != fclose(S3fsLog::logfp)){
+            S3FS_PRN_ERR("Could not close log file(%s).", (S3fsLog::logfile.empty() ? S3fsLog::logfile.c_str() : "null"));
+            return false;
+        }
+        S3fsLog::logfp = nullptr;
+        S3fsLog::logfile.clear();
+    }else{
+        // open new log file
+        //
+        // [NOTE]
+        // It will reopen even if it is the same file.
+        //
+        FILE* newfp;
+        if(nullptr == (newfp = fopen(pfile, "a+"))){
+            S3FS_PRN_ERR("Could not open log file(%s).", pfile);
+            return false;
+        }
+
+        // switch new log file and close old log file if it is opened
+        FILE*    oldfp = S3fsLog::logfp;
+        if(oldfp && 0 != fclose(oldfp)){
+            S3FS_PRN_ERR("Could not close old log file(%s).", (!S3fsLog::logfile.empty() ? S3fsLog::logfile.c_str() : "null"));
+            fclose(newfp);
+            return false;
+        }
+        S3fsLog::logfp = newfp;
+        S3fsLog::logfile = pfile;
+    }
+    return true;
+}
+
+S3fsLog::s3fs_log_level S3fsLog::LowSetLogLevel(s3fs_log_level level)
+{
+    if(S3fsLog::pSingleton != this){
+        S3FS_PRN_ERR("This object is not as same as S3fsLog::pSingleton.");
+        return S3fsLog::debug_level;    // Although it is an error, it returns the current value.
+    }
+    if(level == S3fsLog::debug_level){
+        return S3fsLog::debug_level;
+    }
+    s3fs_log_level old   = S3fsLog::debug_level;
+    S3fsLog::debug_level = level;
+    setlogmask(LOG_UPTO(GetSyslogLevel(S3fsLog::debug_level)));
+    S3FS_PRN_CRIT("change debug level from %sto %s", GetLevelString(old), GetLevelString(S3fsLog::debug_level));
+    return old;
+}
+
+S3fsLog::s3fs_log_level S3fsLog::LowBumpupLogLevel()
+{
+    if(S3fsLog::pSingleton != this){
+        S3FS_PRN_ERR("This object is not as same as S3fsLog::pSingleton.");
+        return S3fsLog::debug_level;    // Although it is an error, it returns the current value.
+    }
+    s3fs_log_level old   = S3fsLog::debug_level;
+    S3fsLog::debug_level = ( LEVEL_CRIT == S3fsLog::debug_level ? LEVEL_ERR  :
+                             LEVEL_ERR  == S3fsLog::debug_level ? LEVEL_WARN :
+                             LEVEL_WARN == S3fsLog::debug_level ? LEVEL_INFO :
+                             LEVEL_INFO == S3fsLog::debug_level ? LEVEL_DBG  : LEVEL_CRIT );
+    setlogmask(LOG_UPTO(GetSyslogLevel(S3fsLog::debug_level)));
+    S3FS_PRN_CRIT("change debug level from %sto %s", GetLevelString(old), GetLevelString(S3fsLog::debug_level));
+    return old;
+}
+
+void s3fs_low_logprn(S3fsLog::s3fs_log_level level, const char* file, const char *func, int line, const char *fmt, ...)
+{
+    if(S3fsLog::IsS3fsLogLevel(level)){
+        va_list va;
+        va_start(va, fmt);
+        size_t len = vsnprintf(nullptr, 0, fmt, va) + 1;
+        va_end(va);
+
+        std::unique_ptr<char[]> message(new char[len]);
+        va_start(va, fmt);
+        vsnprintf(message.get(), len, fmt, va);
+        va_end(va);
+
+        if(foreground || S3fsLog::IsSetLogFile()){
+            S3fsLog::SeekEnd();
+            fprintf(S3fsLog::GetOutputLogFile(), "%s%s%s:%s(%d): %s\n", S3fsLog::GetCurrentTime().c_str(), S3fsLog::GetLevelString(level), file, func, line, message.get());
+            S3fsLog::Flush();
+        }else{
+            // TODO: why does this differ from s3fs_low_logprn2?
+            syslog(S3fsLog::GetSyslogLevel(level), "%s%s:%s(%d): %s", instance_name.c_str(), file, func, line, message.get());
+        }
+    }
+}
+
+void s3fs_low_logprn2(S3fsLog::s3fs_log_level level, int nest, const char* file, const char *func, int line, const char *fmt, ...)
+{
+    if(S3fsLog::IsS3fsLogLevel(level)){
+        va_list va;
+        va_start(va, fmt);
+        size_t len = vsnprintf(nullptr, 0, fmt, va) + 1;
+        va_end(va);
+
+        std::unique_ptr<char[]> message(new char[len]);
+        va_start(va, fmt);
+        vsnprintf(message.get(), len, fmt, va);
+        va_end(va);
+
+        if(foreground || S3fsLog::IsSetLogFile()){
+            S3fsLog::SeekEnd();
+            fprintf(S3fsLog::GetOutputLogFile(), "%s%s%s%s:%s(%d): %s\n", S3fsLog::GetCurrentTime().c_str(), S3fsLog::GetLevelString(level), S3fsLog::GetS3fsLogNest(nest), file, func, line, message.get());
+            S3fsLog::Flush();
+        }else{
+            syslog(S3fsLog::GetSyslogLevel(level), "%s%s%s", instance_name.c_str(), S3fsLog::GetS3fsLogNest(nest), message.get());
+        }
+    }
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_logger.h

@@ -0,0 +1,271 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_LOGGER_H_
+#define S3FS_LOGGER_H_
+
+#include <cstdarg>
+#include <cstdint>
+#include <cstdio>
+#include <string>
+#include <syslog.h>
+#include <sys/time.h>
+
+#include "common.h"
+
+#ifdef CLOCK_MONOTONIC_COARSE
+#define S3FS_CLOCK_MONOTONIC    CLOCK_MONOTONIC_COARSE
+#else
+// case of OSX
+#define S3FS_CLOCK_MONOTONIC    CLOCK_MONOTONIC
+#endif
+
+//-------------------------------------------------------------------
+// S3fsLog class
+//-------------------------------------------------------------------
+class S3fsLog
+{
+    public:
+        enum s3fs_log_level : uint8_t {
+            LEVEL_CRIT = 0,          // LEVEL_CRIT
+            LEVEL_ERR  = 1,          // LEVEL_ERR
+            LEVEL_WARN = 3,          // LEVEL_WARNING
+            LEVEL_INFO = 7,          // LEVEL_INFO
+            LEVEL_DBG  = 15          // LEVEL_DEBUG
+        };
+
+    protected:
+        static constexpr int         NEST_MAX = 4;
+        static constexpr const char* nest_spaces[NEST_MAX] = {"", "  ", "    ", "      "};
+        static constexpr char        LOGFILEENV[] = "S3FS_LOGFILE";
+        static constexpr char        MSGTIMESTAMP[] = "S3FS_MSGTIMESTAMP";
+
+        static S3fsLog*       pSingleton;
+        static s3fs_log_level debug_level;
+        static FILE*          logfp;
+        static std::string    logfile;
+        static bool           time_stamp;
+
+    protected:
+        bool LowLoadEnv();
+        bool LowSetLogfile(const char* pfile);
+        s3fs_log_level LowSetLogLevel(s3fs_log_level level);
+        s3fs_log_level LowBumpupLogLevel();
+
+    public:
+        static bool IsS3fsLogLevel(s3fs_log_level level);
+        static bool IsS3fsLogCrit()  { return IsS3fsLogLevel(LEVEL_CRIT); }
+        static bool IsS3fsLogErr()   { return IsS3fsLogLevel(LEVEL_ERR);  }
+        static bool IsS3fsLogWarn()  { return IsS3fsLogLevel(LEVEL_WARN); }
+        static bool IsS3fsLogInfo()  { return IsS3fsLogLevel(LEVEL_INFO); }
+        static bool IsS3fsLogDbg()   { return IsS3fsLogLevel(LEVEL_DBG);  }
+
+        static constexpr int GetSyslogLevel(s3fs_log_level level)
+        {
+            return ( LEVEL_DBG  == (level & LEVEL_DBG) ? LOG_DEBUG   :
+                     LEVEL_INFO == (level & LEVEL_DBG) ? LOG_INFO    :
+                     LEVEL_WARN == (level & LEVEL_DBG) ? LOG_WARNING :
+                     LEVEL_ERR  == (level & LEVEL_DBG) ? LOG_ERR     : LOG_CRIT );
+        }
+
+        static std::string GetCurrentTime();
+
+        static constexpr const char* GetLevelString(s3fs_log_level level)
+        {
+            return ( LEVEL_DBG  == (level & LEVEL_DBG) ? "[DBG] " :
+                     LEVEL_INFO == (level & LEVEL_DBG) ? "[INF] " :
+                     LEVEL_WARN == (level & LEVEL_DBG) ? "[WAN] " :
+                     LEVEL_ERR  == (level & LEVEL_DBG) ? "[ERR] " : "[CRT] " );
+        }
+
+        static constexpr const char* GetS3fsLogNest(int nest)
+        {
+            return nest_spaces[nest < NEST_MAX ? nest : NEST_MAX - 1];
+        }
+
+        static bool IsSetLogFile()
+        {
+            return (nullptr != logfp);
+        }
+
+        static FILE* GetOutputLogFile()
+        {
+            return (logfp ? logfp : stdout);
+        }
+
+        static FILE* GetErrorLogFile()
+        {
+            return (logfp ? logfp : stderr);
+        }
+
+        static void SeekEnd()
+        {
+            if(logfp){
+                fseek(logfp, 0, SEEK_END);
+            }
+        }
+
+        static void Flush()
+        {
+            if(logfp){
+                fflush(logfp);
+            }
+        }
+
+        static bool SetLogfile(const char* pfile);
+        static bool ReopenLogfile();
+        static s3fs_log_level SetLogLevel(s3fs_log_level level);
+        static s3fs_log_level BumpupLogLevel();
+        static bool SetTimeStamp(bool value);
+
+        explicit S3fsLog();
+        ~S3fsLog();
+        S3fsLog(const S3fsLog&) = delete;
+        S3fsLog(S3fsLog&&) = delete;
+        S3fsLog& operator=(const S3fsLog&) = delete;
+        S3fsLog& operator=(S3fsLog&&) = delete;
+};
+
+//-------------------------------------------------------------------
+// Debug macros
+//-------------------------------------------------------------------
+void s3fs_low_logprn(S3fsLog::s3fs_log_level level, const char* file, const char *func, int line, const char *fmt, ...) __attribute__ ((format (printf, 5, 6)));
+#define S3FS_LOW_LOGPRN(level, fmt, ...) \
+        do{ \
+            s3fs_low_logprn(level, __FILE__, __func__, __LINE__, fmt, ##__VA_ARGS__); \
+        }while(0)
+
+void s3fs_low_logprn2(S3fsLog::s3fs_log_level level, int nest, const char* file, const char *func, int line, const char *fmt, ...) __attribute__ ((format (printf, 6, 7)));
+#define S3FS_LOW_LOGPRN2(level, nest, fmt, ...) \
+        do{ \
+            s3fs_low_logprn2(level, nest, __FILE__, __func__, __LINE__, fmt, ##__VA_ARGS__); \
+        }while(0)
+
+#define S3FS_LOW_CURLDBG(fmt, ...) \
+        do{ \
+            if(foreground || S3fsLog::IsSetLogFile()){ \
+                S3fsLog::SeekEnd(); \
+                fprintf(S3fsLog::GetOutputLogFile(), "%s[CURL DBG] " fmt "%s\n", S3fsLog::GetCurrentTime().c_str(), __VA_ARGS__); \
+                S3fsLog::Flush(); \
+            }else{ \
+                syslog(S3fsLog::GetSyslogLevel(S3fsLog::LEVEL_CRIT), "%s" fmt "%s", instance_name.c_str(), __VA_ARGS__); \
+            } \
+        }while(0)
+
+#define S3FS_LOW_LOGPRN_EXIT(fmt, ...) \
+        do{ \
+            if(foreground || S3fsLog::IsSetLogFile()){ \
+                S3fsLog::SeekEnd(); \
+                fprintf(S3fsLog::GetErrorLogFile(), "s3fs: " fmt "%s\n", __VA_ARGS__); \
+                S3fsLog::Flush(); \
+            }else{ \
+                fprintf(S3fsLog::GetErrorLogFile(), "s3fs: " fmt "%s\n", __VA_ARGS__); \
+                syslog(S3fsLog::GetSyslogLevel(S3fsLog::LEVEL_CRIT), "%ss3fs: " fmt "%s", instance_name.c_str(), __VA_ARGS__); \
+            } \
+        }while(0)
+
+// Special macro for init message
+#define S3FS_PRN_INIT_INFO(fmt, ...) \
+        do{ \
+            if(foreground || S3fsLog::IsSetLogFile()){ \
+                S3fsLog::SeekEnd(); \
+                fprintf(S3fsLog::GetOutputLogFile(), "%s%s%s%s:%s(%d): " fmt "%s\n", S3fsLog::GetCurrentTime().c_str(), S3fsLog::GetLevelString(S3fsLog::LEVEL_INFO), S3fsLog::GetS3fsLogNest(0), __FILE__, __func__, __LINE__, __VA_ARGS__, ""); \
+                S3fsLog::Flush(); \
+            }else{ \
+                syslog(S3fsLog::GetSyslogLevel(S3fsLog::LEVEL_INFO), "%s%s" fmt "%s", instance_name.c_str(), S3fsLog::GetS3fsLogNest(0), __VA_ARGS__, ""); \
+            } \
+        }while(0)
+
+#define S3FS_PRN_LAUNCH_INFO(fmt, ...) \
+        do{ \
+            if(foreground || S3fsLog::IsSetLogFile()){ \
+                S3fsLog::SeekEnd(); \
+                fprintf(S3fsLog::GetOutputLogFile(), "%s%s" fmt "%s\n", S3fsLog::GetCurrentTime().c_str(), S3fsLog::GetLevelString(S3fsLog::LEVEL_INFO), __VA_ARGS__, ""); \
+                S3fsLog::Flush(); \
+            }else{ \
+                syslog(S3fsLog::GetSyslogLevel(S3fsLog::LEVEL_INFO), "%s" fmt "%s", instance_name.c_str(), __VA_ARGS__, ""); \
+            } \
+        }while(0)
+
+// Special macro for checking cache files
+#define S3FS_LOW_CACHE(fp, fmt, ...) \
+        do{ \
+            if(foreground || S3fsLog::IsSetLogFile()){ \
+                S3fsLog::SeekEnd(); \
+                fprintf(fp, fmt "%s\n", __VA_ARGS__); \
+                S3fsLog::Flush(); \
+            }else{ \
+                syslog(S3fsLog::GetSyslogLevel(S3fsLog::LEVEL_INFO), "%s: " fmt "%s", instance_name.c_str(), __VA_ARGS__); \
+            } \
+        }while(0)
+
+// [NOTE]
+// small trick for VA_ARGS
+//
+#define S3FS_PRN_EXIT(fmt, ...)   S3FS_LOW_LOGPRN_EXIT(fmt, ##__VA_ARGS__, "")
+#define S3FS_PRN_CRIT(fmt, ...)   S3FS_LOW_LOGPRN(S3fsLog::LEVEL_CRIT, fmt, ##__VA_ARGS__)
+#define S3FS_PRN_ERR(fmt, ...)    S3FS_LOW_LOGPRN(S3fsLog::LEVEL_ERR,  fmt, ##__VA_ARGS__)
+#define S3FS_PRN_WARN(fmt, ...)   S3FS_LOW_LOGPRN(S3fsLog::LEVEL_WARN, fmt, ##__VA_ARGS__)
+#define S3FS_PRN_DBG(fmt, ...)    S3FS_LOW_LOGPRN(S3fsLog::LEVEL_DBG,  fmt, ##__VA_ARGS__)
+#define S3FS_PRN_INFO(fmt, ...)   S3FS_LOW_LOGPRN2(S3fsLog::LEVEL_INFO, 0, fmt, ##__VA_ARGS__)
+#define S3FS_PRN_INFO1(fmt, ...)  S3FS_LOW_LOGPRN2(S3fsLog::LEVEL_INFO, 1, fmt, ##__VA_ARGS__)
+#define S3FS_PRN_INFO2(fmt, ...)  S3FS_LOW_LOGPRN2(S3fsLog::LEVEL_INFO, 2, fmt, ##__VA_ARGS__)
+#define S3FS_PRN_INFO3(fmt, ...)  S3FS_LOW_LOGPRN2(S3fsLog::LEVEL_INFO, 3, fmt, ##__VA_ARGS__)
+#define S3FS_PRN_CURL(fmt, ...)   S3FS_LOW_CURLDBG(fmt, ##__VA_ARGS__, "")
+#define S3FS_PRN_CACHE(fp, ...)   S3FS_LOW_CACHE(fp, ##__VA_ARGS__, "")
+
+// Macros to print log with fuse context
+#define PRINT_FUSE_CTX(level, indent, fmt, ...) do {                    \
+    if(S3fsLog::IsS3fsLogLevel(level)){                                 \
+        struct fuse_context *ctx = fuse_get_context();                  \
+        if(ctx == NULL){                                                \
+            S3FS_LOW_LOGPRN2(level, indent, fmt, ##__VA_ARGS__);        \
+        }else{                                                          \
+            S3FS_LOW_LOGPRN2(level, indent, fmt"[pid=%u,uid=%u,gid=%u]",\
+                ##__VA_ARGS__,                                          \
+                (unsigned int)(ctx->pid),                               \
+                (unsigned int)(ctx->uid),                               \
+                (unsigned int)(ctx->gid));                              \
+        }                                                               \
+    }                                                                   \
+} while (0)
+
+#define FUSE_CTX_INFO(fmt, ...) do {                            \
+    PRINT_FUSE_CTX(S3fsLog::LEVEL_INFO, 0, fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define FUSE_CTX_INFO1(fmt, ...) do {                           \
+    PRINT_FUSE_CTX(S3fsLog::LEVEL_INFO, 1, fmt, ##__VA_ARGS__); \
+} while (0)
+
+#define FUSE_CTX_DBG(fmt, ...) do {                                 \
+    PRINT_FUSE_CTX(S3fsLog::LEVEL_DBG, 0, fmt, ##__VA_ARGS__);  \
+} while (0)
+
+#endif // S3FS_LOGGER_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_util.h

@@ -17,99 +17,30 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
+
 #ifndef S3FS_S3FS_UTIL_H_
 #define S3FS_S3FS_UTIL_H_
 
-//-------------------------------------------------------------------
-// Typedef
-//-------------------------------------------------------------------
-//
-// Struct
-//
-struct s3obj_entry{
-  std::string normalname; // normalized name: if empty, object is normalized name.
-  std::string orgname;    // original name: if empty, object is original name.
-  std::string etag;
-  bool        is_dir;
+#include <cstdint>
+#include <functional>
+#include <string>
+#include <sys/stat.h>
 
-  s3obj_entry() : is_dir(false) {}
-};
-
-typedef std::map<std::string, struct s3obj_entry> s3obj_t;
-typedef std::list<std::string> s3obj_list_t;
-
-//
-// Class
-//
-class S3ObjList
-{
-  private:
-    s3obj_t objects;
-
-  private:
-    bool insert_normalized(const char* name, const char* normalized, bool is_dir);
-    const s3obj_entry* GetS3Obj(const char* name) const;
-
-    s3obj_t::const_iterator begin(void) const {
-      return objects.begin();
-    }
-    s3obj_t::const_iterator end(void) const {
-      return objects.end();
-    }
-
-  public:
-    S3ObjList() {}
-    ~S3ObjList() {}
-
-    bool IsEmpty(void) const {
-      return objects.empty();
-    }
-    bool insert(const char* name, const char* etag = NULL, bool is_dir = false);
-    std::string GetOrgName(const char* name) const;
-    std::string GetNormalizedName(const char* name) const;
-    std::string GetETag(const char* name) const;
-    bool IsDir(const char* name) const;
-    bool GetNameList(s3obj_list_t& list, bool OnlyNormalized = true, bool CutSlash = true) const;
-    bool GetLastName(std::string& lastname) const;
-
-    static bool MakeHierarchizedList(s3obj_list_t& list, bool haveSlash);
-};
-
-typedef struct mvnode {
-   char *old_path;
-   char *new_path;
-   bool is_dir;
-   bool is_normdir;
-   struct mvnode *prev;
-   struct mvnode *next;
-} MVNODE;
-
-class AutoLock
-{
-  public:
-    enum Type {
-      NO_WAIT = 1,
-      ALREADY_LOCKED = 2,
-      NONE = 0
-    };
-    explicit AutoLock(pthread_mutex_t* pmutex, Type type = NONE);
-    bool isLockAcquired() const;
-    ~AutoLock();
-
-  private:
-    pthread_mutex_t* const auto_mutex;
-    bool is_lock_acquired;
-};
+#ifndef CLOCK_REALTIME
+#define CLOCK_REALTIME          0
+#endif
+#ifndef CLOCK_MONOTONIC
+#define CLOCK_MONOTONIC         CLOCK_REALTIME
+#endif
+#ifndef CLOCK_MONOTONIC_COARSE
+#define CLOCK_MONOTONIC_COARSE  CLOCK_MONOTONIC
+#endif
 
 //-------------------------------------------------------------------
 // Functions
 //-------------------------------------------------------------------
 std::string get_realpath(const char *path);
 
-MVNODE *create_mvnode(const char *old_path, const char *new_path, bool is_dir, bool normdir = false);
-MVNODE *add_mvnode(MVNODE** head, MVNODE** tail, const char *old_path, const char *new_path, bool is_dir, bool normdir = false);
-void free_mvnodes(MVNODE *head);
-
 void init_sysconf_vars();
 std::string get_username(uid_t uid);
 int is_uid_include_group(uid_t uid, gid_t gid);
@@ -118,32 +49,66 @@ std::string mydirname(const char* path);
 std::string mydirname(const std::string& path);
 std::string mybasename(const char* path);
 std::string mybasename(const std::string& path);
+
 int mkdirp(const std::string& path, mode_t mode);
 std::string get_exist_directory_path(const std::string& path);
 bool check_exist_dir_permission(const char* dirpath);
 bool delete_files_in_dir(const char* dir, bool is_remove_own);
 
-time_t get_mtime(const char *s);
-time_t get_mtime(headers_t& meta, bool overcheck = true);
-time_t get_ctime(headers_t& meta, bool overcheck = true);
-off_t get_size(const char *s);
-off_t get_size(headers_t& meta);
-mode_t get_mode(const char *s);
-mode_t get_mode(headers_t& meta, const char* path = NULL, bool checkdir = false, bool forcedir = false);
-uid_t get_uid(const char *s);
-uid_t get_uid(headers_t& meta);
-gid_t get_gid(const char *s);
-gid_t get_gid(headers_t& meta);
-blkcnt_t get_blocks(off_t size);
-time_t cvtIAMExpireStringToTime(const char* s);
-time_t get_lastmodified(const char* s);
-time_t get_lastmodified(headers_t& meta);
-bool is_need_check_obj_detail(headers_t& meta);
-bool simple_parse_xml(const char* data, size_t len, const char* key, std::string& value);
+bool compare_sysname(const char* target);
 
-void show_usage(void);
-void show_help(void);
-void show_version(void);
+void print_launch_message(int argc, char** argv);
+
+//
+// Utility for nanosecond time(timespec)
+//
+enum class stat_time_type : uint8_t {
+    ATIME,
+    MTIME,
+    CTIME
+};
+
+//-------------------------------------------------------------------
+// Utility for nanosecond time(timespec)
+//-------------------------------------------------------------------
+static constexpr struct timespec S3FS_OMIT_TS = {0, UTIME_OMIT};
+
+int compare_timespec(const struct timespec& ts1, const struct timespec& ts2);
+int compare_timespec(const struct stat& st, stat_time_type type, const struct timespec& ts);
+void set_timespec_to_stat(struct stat& st, stat_time_type type, const struct timespec& ts);
+struct timespec* set_stat_to_timespec(const struct stat& st, stat_time_type type, struct timespec& ts);
+std::string str_stat_time(const struct stat& st, stat_time_type type);
+struct timespec* s3fs_realtime(struct timespec& ts);
+std::string s3fs_str_realtime();
+
+// Wrap fclose since it is illegal to take the address of a stdlib function
+int s3fs_fclose(FILE* fp);
+
+class scope_guard {
+public:
+    template<class Callable>
+    explicit scope_guard(Callable&& undo_func)
+        : func(std::forward<Callable>(undo_func))
+    {}
+
+    ~scope_guard() {
+        if(func != nullptr) {
+            func();
+        }
+    }
+
+    void dismiss() {
+        func = nullptr;
+    }
+
+    scope_guard(const scope_guard&) = delete;
+    scope_guard(scope_guard&& other) = delete;
+    scope_guard& operator=(const scope_guard&) = delete;
+    scope_guard& operator=(scope_guard&&) = delete;
+
+private:
+    std::function<void()> func;
+};
 
 #endif // S3FS_S3FS_UTIL_H_
 
@@ -152,6 +117,6 @@ void show_version(void);
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/s3fs_xml.cpp

@@ -0,0 +1,499 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+#include <libxml/xpathInternals.h>
+#include <mutex>
+#include <string>
+
+#include "common.h"
+#include "s3fs_logger.h"
+#include "s3fs_xml.h"
+#include "s3fs_util.h"
+#include "s3objlist.h"
+#include "string_util.h"
+
+//-------------------------------------------------------------------
+// Symbols
+//-------------------------------------------------------------------
+enum class get_object_name_result : std::uint8_t {
+    SUCCESS,
+    FAILURE,
+    FILE_OR_SUBDIR_IN_DIR
+};
+
+//-------------------------------------------------------------------
+// Variables
+//-------------------------------------------------------------------
+// [NOTE]
+// mutex for static variables in GetXmlNsUrl
+//
+static std::mutex xml_parser_mutex;
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+static bool GetXmlNsUrl(xmlDocPtr doc, std::string& nsurl)
+{
+    bool result = false;
+
+    if(!doc){
+        return result;
+    }
+
+    std::string tmpNs;
+    {
+        static time_t tmLast = 0;  // cache for 60 sec.
+        static std::string strNs;
+
+        const std::lock_guard<std::mutex> lock(xml_parser_mutex);
+
+        if((tmLast + 60) < time(nullptr)){
+            // refresh
+            tmLast = time(nullptr);
+            strNs  = "";
+            xmlNodePtr pRootNode = xmlDocGetRootElement(doc);
+            if(pRootNode){
+                std::unique_ptr<xmlNsPtr, decltype(xmlFree)> nslist(xmlGetNsList(doc, pRootNode), xmlFree);
+                if(nslist){
+                    if(*nslist && (*nslist)[0].href){
+                        int len = xmlStrlen((*nslist)[0].href);
+                        if(0 < len){
+                            strNs = std::string(reinterpret_cast<const char*>((*nslist)[0].href), len);
+                        }
+                    }
+                }
+            }
+        }
+        tmpNs = strNs;
+    }
+    if(!tmpNs.empty()){
+        nsurl  = tmpNs;
+        result = true;
+    }
+    return result;
+}
+
+static unique_ptr_xmlChar get_base_exp(xmlDocPtr doc, const char* exp)
+{
+    std::string xmlnsurl;
+    std::string exp_string;
+
+    if(!doc){
+        return {nullptr, xmlFree};
+    }
+    unique_ptr_xmlXPathContext ctx(xmlXPathNewContext(doc), xmlXPathFreeContext);
+
+    if(!noxmlns && GetXmlNsUrl(doc, xmlnsurl)){
+        xmlXPathRegisterNs(ctx.get(), reinterpret_cast<const xmlChar*>("s3"), reinterpret_cast<const xmlChar*>(xmlnsurl.c_str()));
+        exp_string = "/s3:ListBucketResult/s3:";
+    } else {
+        exp_string = "/ListBucketResult/";
+    }
+
+    exp_string += exp;
+
+    unique_ptr_xmlXPathObject marker_xp(xmlXPathEvalExpression(reinterpret_cast<const xmlChar*>(exp_string.c_str()), ctx.get()), xmlXPathFreeObject);
+    if(nullptr == marker_xp){
+        return {nullptr, xmlFree};
+    }
+    if(xmlXPathNodeSetIsEmpty(marker_xp->nodesetval)){
+        S3FS_PRN_INFO("marker_xp->nodesetval is empty.");
+        return {nullptr, xmlFree};
+    }
+    xmlNodeSetPtr nodes  = marker_xp->nodesetval;
+
+    unique_ptr_xmlChar result(xmlNodeListGetString(doc, nodes->nodeTab[0]->xmlChildrenNode, 1), xmlFree);
+    return result;
+}
+
+static unique_ptr_xmlChar get_prefix(xmlDocPtr doc)
+{
+    return get_base_exp(doc, "Prefix");
+}
+
+unique_ptr_xmlChar get_next_continuation_token(xmlDocPtr doc)
+{
+    return get_base_exp(doc, "NextContinuationToken");
+}
+
+unique_ptr_xmlChar get_next_marker(xmlDocPtr doc)
+{
+    return get_base_exp(doc, "NextMarker");
+}
+
+static std::pair<get_object_name_result, std::string> get_object_name(xmlDocPtr doc, xmlNodePtr node, const char* path)
+{
+    // Get full path
+    unique_ptr_xmlChar fullpath(xmlNodeListGetString(doc, node, 1), xmlFree);
+    if(!fullpath){
+        S3FS_PRN_ERR("could not get object full path name..");
+        return {get_object_name_result::FAILURE, ""};
+    }
+    // basepath(path) is as same as fullpath.
+    if(0 == strcmp(reinterpret_cast<char*>(fullpath.get()), path)){
+        return {get_object_name_result::FILE_OR_SUBDIR_IN_DIR, ""};
+    }
+
+    // Make dir path and filename
+    std::string strdirpath = mydirname(reinterpret_cast<const char*>(fullpath.get()));
+    std::string strmybpath = mybasename(reinterpret_cast<const char*>(fullpath.get()));
+    const char* dirpath = strdirpath.c_str();
+    const char* mybname = strmybpath.c_str();
+    const char* basepath= (path && '/' == path[0]) ? &path[1] : path;
+
+    if('\0' == mybname[0]){
+        return {get_object_name_result::FAILURE, ""};
+    }
+
+    // check subdir & file in subdir
+    if(0 < strlen(dirpath)){
+        // case of "/"
+        if(0 == strcmp(mybname, "/") && 0 == strcmp(dirpath, "/")){
+            return {get_object_name_result::FILE_OR_SUBDIR_IN_DIR, ""};
+        }
+        // case of "."
+        if(0 == strcmp(mybname, ".") && 0 == strcmp(dirpath, ".")){
+            return {get_object_name_result::FILE_OR_SUBDIR_IN_DIR, ""};
+        }
+        // case of ".."
+        if(0 == strcmp(mybname, "..") && 0 == strcmp(dirpath, ".")){
+            return {get_object_name_result::FILE_OR_SUBDIR_IN_DIR, ""};
+        }
+        // case of "name"
+        if(0 == strcmp(dirpath, ".")){
+            // OK
+            return {get_object_name_result::SUCCESS, mybname};
+        }else{
+            if(basepath && 0 == strcmp(dirpath, basepath)){
+                // OK
+                return {get_object_name_result::SUCCESS, mybname};
+            }else if(basepath && 0 < strlen(basepath) && '/' == basepath[strlen(basepath) - 1] && 0 == strncmp(dirpath, basepath, strlen(basepath) - 1)){
+                std::string withdirname;
+                if(strlen(dirpath) > strlen(basepath)){
+                    withdirname = &dirpath[strlen(basepath)];
+                }
+                // cppcheck-suppress unmatchedSuppression
+                // cppcheck-suppress knownConditionTrueFalse
+                if(!withdirname.empty() && '/' != *withdirname.rbegin()){
+                    withdirname += "/";
+                }
+                withdirname += mybname;
+                return {get_object_name_result::SUCCESS, withdirname};
+            }
+        }
+    }
+    // case of something wrong
+    return {get_object_name_result::FILE_OR_SUBDIR_IN_DIR, ""};
+}
+
+static unique_ptr_xmlChar get_exp_value_xml(xmlDocPtr doc, xmlXPathContextPtr ctx, const char* exp_key)
+{
+    if(!doc || !ctx || !exp_key){
+        return {nullptr, xmlFree};
+    }
+
+    xmlNodeSetPtr     exp_nodes;
+
+    // search exp_key tag
+    unique_ptr_xmlXPathObject exp(xmlXPathEvalExpression(reinterpret_cast<const xmlChar*>(exp_key), ctx), xmlXPathFreeObject);
+    if(nullptr == exp){
+        S3FS_PRN_ERR("Could not find key(%s).", exp_key);
+        return {nullptr, xmlFree};
+    }
+    if(xmlXPathNodeSetIsEmpty(exp->nodesetval)){
+        S3FS_PRN_ERR("Key(%s) node is empty.", exp_key);
+        return {nullptr, xmlFree};
+    }
+    // get exp_key value & set in struct
+    exp_nodes = exp->nodesetval;
+    unique_ptr_xmlChar exp_value(xmlNodeListGetString(doc, exp_nodes->nodeTab[0]->xmlChildrenNode, 1), xmlFree);
+    if(nullptr == exp_value){
+        S3FS_PRN_ERR("Key(%s) value is empty.", exp_key);
+        return {nullptr, xmlFree};
+    }
+
+    return exp_value;
+}
+
+bool get_incomp_mpu_list(xmlDocPtr doc, incomp_mpu_list_t& list)
+{
+    if(!doc){
+        return false;
+    }
+
+    unique_ptr_xmlXPathContext ctx(xmlXPathNewContext(doc), xmlXPathFreeContext);
+
+    std::string xmlnsurl;
+    std::string ex_upload = "//";
+    std::string ex_key;
+    std::string ex_id;
+    std::string ex_date;
+
+    if(!noxmlns && GetXmlNsUrl(doc, xmlnsurl)){
+        xmlXPathRegisterNs(ctx.get(), reinterpret_cast<const xmlChar*>("s3"), reinterpret_cast<const xmlChar*>(xmlnsurl.c_str()));
+        ex_upload += "s3:";
+        ex_key    += "s3:";
+        ex_id     += "s3:";
+        ex_date   += "s3:";
+    }
+    ex_upload += "Upload";
+    ex_key    += "Key";
+    ex_id     += "UploadId";
+    ex_date   += "Initiated";
+
+    // get "Upload" Tags
+    unique_ptr_xmlXPathObject upload_xp(xmlXPathEvalExpression(reinterpret_cast<const xmlChar*>(ex_upload.c_str()), ctx.get()), xmlXPathFreeObject);
+    if(nullptr == upload_xp){
+        S3FS_PRN_ERR("xmlXPathEvalExpression returns null.");
+        return false;
+    }
+    if(xmlXPathNodeSetIsEmpty(upload_xp->nodesetval)){
+        S3FS_PRN_INFO("upload_xp->nodesetval is empty.");
+        return true;
+    }
+
+    // Make list
+    int           cnt;
+    xmlNodeSetPtr upload_nodes;
+    list.clear();
+    for(cnt = 0, upload_nodes = upload_xp->nodesetval; cnt < upload_nodes->nodeNr; cnt++){
+        ctx->node = upload_nodes->nodeTab[cnt];
+
+        INCOMP_MPU_INFO part;
+
+        // search "Key" tag
+        unique_ptr_xmlChar ex_value(get_exp_value_xml(doc, ctx.get(), ex_key.c_str()));
+        if(nullptr == ex_value){
+            continue;
+        }
+        if('/' != *(reinterpret_cast<char*>(ex_value.get()))){
+            part.key = "/";
+        }else{
+            part.key = "";
+        }
+        part.key += reinterpret_cast<char*>(ex_value.get());
+
+        // search "UploadId" tag
+        if(nullptr == (ex_value = get_exp_value_xml(doc, ctx.get(), ex_id.c_str()))){
+            continue;
+        }
+        part.id = reinterpret_cast<char*>(ex_value.get());
+
+        // search "Initiated" tag
+        if(nullptr == (ex_value = get_exp_value_xml(doc, ctx.get(), ex_date.c_str()))){
+            continue;
+        }
+        part.date = reinterpret_cast<char*>(ex_value.get());
+
+        list.push_back(part);
+    }
+
+    return true;
+}
+
+bool is_truncated(xmlDocPtr doc)
+{
+    unique_ptr_xmlChar strTruncate(get_base_exp(doc, "IsTruncated"));
+    if(!strTruncate){
+        return false;
+    }
+    return 0 == strcasecmp(reinterpret_cast<const char*>(strTruncate.get()), "true");
+}
+
+int append_objects_from_xml_ex(const char* path, xmlDocPtr doc, xmlXPathContextPtr ctx, const char* ex_contents, const char* ex_key, const char* ex_etag, int isCPrefix, S3ObjList& head, bool prefix)
+{
+    xmlNodeSetPtr content_nodes;
+
+    unique_ptr_xmlXPathObject contents_xp(xmlXPathEvalExpression(reinterpret_cast<const xmlChar*>(ex_contents), ctx), xmlXPathFreeObject);
+    if(nullptr == contents_xp){
+        S3FS_PRN_ERR("xmlXPathEvalExpression returns null.");
+        return -1;
+    }
+    if(xmlXPathNodeSetIsEmpty(contents_xp->nodesetval)){
+        S3FS_PRN_DBG("contents_xp->nodesetval is empty.");
+        return 0;
+    }
+    content_nodes = contents_xp->nodesetval;
+
+    bool is_dir;
+    std::string stretag;
+    int i;
+    for(i = 0; i < content_nodes->nodeNr; i++){
+        ctx->node = content_nodes->nodeTab[i];
+
+        // object name
+        unique_ptr_xmlXPathObject key(xmlXPathEvalExpression(reinterpret_cast<const xmlChar*>(ex_key), ctx), xmlXPathFreeObject);
+        if(nullptr == key){
+            S3FS_PRN_WARN("key is null. but continue.");
+            continue;
+        }
+        if(xmlXPathNodeSetIsEmpty(key->nodesetval)){
+            S3FS_PRN_WARN("node is empty. but continue.");
+            continue;
+        }
+        xmlNodeSetPtr key_nodes = key->nodesetval;
+        auto result = get_object_name(doc, key_nodes->nodeTab[0]->xmlChildrenNode, path);
+
+        switch(result.first){
+        case get_object_name_result::FAILURE:
+            S3FS_PRN_WARN("name is something wrong. but continue.");
+            break;
+        case get_object_name_result::SUCCESS: {
+            is_dir  = isCPrefix ? true : false;
+            stretag = "";
+
+            if(!isCPrefix && ex_etag){
+                // Get ETag
+                unique_ptr_xmlXPathObject ETag(xmlXPathEvalExpression(reinterpret_cast<const xmlChar*>(ex_etag), ctx), xmlXPathFreeObject);
+                if(nullptr != ETag){
+                    if(xmlXPathNodeSetIsEmpty(ETag->nodesetval)){
+                        S3FS_PRN_INFO("ETag->nodesetval is empty.");
+                    }else{
+                        xmlNodeSetPtr etag_nodes = ETag->nodesetval;
+                        unique_ptr_xmlChar petag(xmlNodeListGetString(doc, etag_nodes->nodeTab[0]->xmlChildrenNode, 1), xmlFree);
+                        if(petag){
+                            stretag = reinterpret_cast<const char*>(petag.get());
+                        }
+                    }
+                }
+            }
+
+            // [NOTE]
+            // The XML data passed to this function is CR code(\r) encoded.
+            // The function below decodes that encoded CR code.
+            //
+            std::string decname = get_decoded_cr_code(result.second.c_str());
+
+            if(prefix){
+                head.AddCommonPrefix(decname);
+            }
+            if(!head.insert(decname.c_str(), (!stretag.empty() ? stretag.c_str() : nullptr), is_dir)){
+                S3FS_PRN_ERR("insert_object returns with error.");
+                return -1;
+            }
+            break;
+        }
+        case get_object_name_result::FILE_OR_SUBDIR_IN_DIR:
+            S3FS_PRN_DBG("name is file or subdir in dir. but continue.");
+            break;
+        }
+    }
+
+    return 0;
+}
+
+int append_objects_from_xml(const char* path, xmlDocPtr doc, S3ObjList& head)
+{
+    std::string xmlnsurl;
+    std::string ex_contents = "//";
+    std::string ex_key;
+    std::string ex_cprefix  = "//";
+    std::string ex_prefix;
+    std::string ex_etag;
+
+    if(!doc){
+        return -1;
+    }
+
+    // If there is not <Prefix>, use path instead of it.
+    auto pprefix = get_prefix(doc);
+    std::string prefix  = (pprefix ? reinterpret_cast<char*>(pprefix.get()) : path ? path : "");
+
+    unique_ptr_xmlXPathContext ctx(xmlXPathNewContext(doc), xmlXPathFreeContext);
+
+    if(!noxmlns && GetXmlNsUrl(doc, xmlnsurl)){
+        xmlXPathRegisterNs(ctx.get(), reinterpret_cast<const xmlChar*>("s3"), reinterpret_cast<const xmlChar*>(xmlnsurl.c_str()));
+        ex_contents+= "s3:";
+        ex_key     += "s3:";
+        ex_cprefix += "s3:";
+        ex_prefix  += "s3:";
+        ex_etag    += "s3:";
+    }
+    ex_contents+= "Contents";
+    ex_key     += "Key";
+    ex_cprefix += "CommonPrefixes";
+    ex_prefix  += "Prefix";
+    ex_etag    += "ETag";
+
+    if(-1 == append_objects_from_xml_ex(prefix.c_str(), doc, ctx.get(), ex_contents.c_str(), ex_key.c_str(), ex_etag.c_str(), 0, head, /*prefix=*/ false) ||
+       -1 == append_objects_from_xml_ex(prefix.c_str(), doc, ctx.get(), ex_cprefix.c_str(), ex_prefix.c_str(), nullptr, 1, head, /*prefix=*/ true) )
+    {
+        S3FS_PRN_ERR("append_objects_from_xml_ex returns with error.");
+        return -1;
+    }
+
+    return 0;
+}
+
+//-------------------------------------------------------------------
+// Utility functions
+//-------------------------------------------------------------------
+bool simple_parse_xml(const char* data, size_t len, const char* key, std::string& value)
+{
+    bool result = false;
+
+    if(!data || !key){
+        return false;
+    }
+    value.clear();
+
+    std::unique_ptr<xmlDoc, decltype(&xmlFreeDoc)> doc(xmlReadMemory(data, static_cast<int>(len), "", nullptr, 0), xmlFreeDoc);
+    if(nullptr == doc){
+        return false;
+    }
+
+    if(nullptr == doc->children){
+        return false;
+    }
+    for(xmlNodePtr cur_node = doc->children->children; nullptr != cur_node; cur_node = cur_node->next){
+        // For DEBUG
+        // std::string cur_node_name(reinterpret_cast<const char *>(cur_node->name));
+        // printf("cur_node_name: %s\n", cur_node_name.c_str());
+
+        if(XML_ELEMENT_NODE == cur_node->type){
+            std::string elementName = reinterpret_cast<const char*>(cur_node->name);
+            // For DEBUG
+            // printf("elementName: %s\n", elementName.c_str());
+
+            if(cur_node->children){
+                if(XML_TEXT_NODE == cur_node->children->type){
+                    if(elementName == key) {
+                        value = reinterpret_cast<const char *>(cur_node->children->content);
+                        result    = true;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+
+    return result;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3fs_xml.h

@@ -0,0 +1,59 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_S3FS_XML_H_
+#define S3FS_S3FS_XML_H_
+
+#include <libxml/xpath.h>
+#include <libxml/parser.h>  // [NOTE] nessetially include this header in some environments
+#include <memory>
+#include <string>
+
+#include "mpu_util.h"
+
+class S3ObjList;
+
+typedef std::unique_ptr<xmlChar, decltype(xmlFree)> unique_ptr_xmlChar;
+typedef std::unique_ptr<xmlXPathObject, decltype(&xmlXPathFreeObject)> unique_ptr_xmlXPathObject;
+typedef std::unique_ptr<xmlXPathContext, decltype(&xmlXPathFreeContext)> unique_ptr_xmlXPathContext;
+typedef std::unique_ptr<xmlDoc, decltype(&xmlFreeDoc)> unique_ptr_xmlDoc;
+
+//-------------------------------------------------------------------
+// Functions
+//-------------------------------------------------------------------
+bool is_truncated(xmlDocPtr doc);
+int append_objects_from_xml_ex(const char* path, xmlDocPtr doc, xmlXPathContextPtr ctx, const char* ex_contents, const char* ex_key, const char* ex_etag, int isCPrefix, S3ObjList& head, bool prefix);
+int append_objects_from_xml(const char* path, xmlDocPtr doc, S3ObjList& head);
+unique_ptr_xmlChar get_next_continuation_token(xmlDocPtr doc);
+unique_ptr_xmlChar get_next_marker(xmlDocPtr doc);
+bool get_incomp_mpu_list(xmlDocPtr doc, incomp_mpu_list_t& list);
+
+bool simple_parse_xml(const char* data, size_t len, const char* key, std::string& value);
+
+#endif // S3FS_S3FS_XML_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3objlist.cpp

@@ -0,0 +1,281 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <cstring>
+#include <string>
+
+#include "s3objlist.h"
+
+//-------------------------------------------------------------------
+// Class S3ObjList
+//-------------------------------------------------------------------
+// New class S3ObjList is base on old s3_object struct.
+// This class is for S3 compatible clients.
+//
+// If name is terminated by "/", it is forced dir type.
+// If name is terminated by "_$folder$", it is forced dir type.
+// If is_dir is true and name is not terminated by "/", the name is added "/".
+//
+bool S3ObjList::insert(const char* name, const char* etag, bool is_dir)
+{
+    if(!name || '\0' == name[0]){
+        return false;
+    }
+
+    s3obj_t::iterator iter;
+    std::string newname;
+    std::string orgname = name;
+
+    // Normalization
+    std::string::size_type pos = orgname.find("_$folder$");
+    if(std::string::npos != pos){
+        newname = orgname.substr(0, pos);
+        is_dir  = true;
+    }else{
+        newname = orgname;
+    }
+    if(is_dir){
+        if('/' != *newname.rbegin()){
+            newname += "/";
+        }
+    }else{
+        if('/' == *newname.rbegin()){
+            is_dir = true;
+        }
+    }
+
+    // Check derived name object.
+    if(is_dir){
+        std::string chkname = newname.substr(0, newname.length() - 1);
+        if(objects.cend() != (iter = objects.find(chkname))){
+            // found "dir" object --> remove it.
+            objects.erase(iter);
+        }
+    }else{
+        std::string chkname = newname + "/";
+        if(objects.cend() != (iter = objects.find(chkname))){
+            // found "dir/" object --> not add new object.
+            // and add normalization
+            return insert_normalized(orgname.c_str(), chkname.c_str(), true);
+        }
+    }
+
+    // Add object
+    if(objects.cend() != (iter = objects.find(newname))){
+        // Found same object --> update information.
+        (*iter).second.normalname.clear();
+        (*iter).second.orgname = orgname;
+        (*iter).second.is_dir  = is_dir;
+        if(etag){
+            (*iter).second.etag = etag;  // over write
+        }
+    }else{
+        // add new object
+        s3obj_entry newobject;
+        newobject.orgname = orgname;
+        newobject.is_dir  = is_dir;
+        if(etag){
+            newobject.etag = etag;
+        }
+        objects[newname] = newobject;
+    }
+
+    // add normalization
+    return insert_normalized(orgname.c_str(), newname.c_str(), is_dir);
+}
+
+bool S3ObjList::insert_normalized(const char* name, const char* normalized, bool is_dir)
+{
+    if(!name || '\0' == name[0] || !normalized || '\0' == normalized[0]){
+        return false;
+    }
+    if(0 == strcmp(name, normalized)){
+        return true;
+    }
+
+    s3obj_t::iterator iter;
+    if(objects.cend() != (iter = objects.find(name))){
+        // found name --> over write
+        iter->second.orgname.clear();
+        iter->second.etag.clear();
+        iter->second.normalname = normalized;
+        iter->second.is_dir     = is_dir;
+    }else{
+        // not found --> add new object
+        s3obj_entry newobject;
+        newobject.normalname = normalized;
+        newobject.is_dir     = is_dir;
+        objects[name]        = newobject;
+    }
+    return true;
+}
+
+const s3obj_entry* S3ObjList::GetS3Obj(const char* name) const
+{
+    s3obj_t::const_iterator iter;
+
+    if(!name || '\0' == name[0]){
+        return nullptr;
+    }
+    if(objects.cend() == (iter = objects.find(name))){
+        return nullptr;
+    }
+    return &((*iter).second);
+}
+
+std::string S3ObjList::GetOrgName(const char* name) const
+{
+    const s3obj_entry* ps3obj;
+
+    if(!name || '\0' == name[0]){
+        return "";
+    }
+    if(nullptr == (ps3obj = GetS3Obj(name))){
+        return "";
+    }
+    return ps3obj->orgname;
+}
+
+std::string S3ObjList::GetNormalizedName(const char* name) const
+{
+    const s3obj_entry* ps3obj;
+
+    if(!name || '\0' == name[0]){
+        return "";
+    }
+    if(nullptr == (ps3obj = GetS3Obj(name))){
+        return "";
+    }
+    if(ps3obj->normalname.empty()){
+        return name;
+    }
+    return ps3obj->normalname;
+}
+
+std::string S3ObjList::GetETag(const char* name) const
+{
+    const s3obj_entry* ps3obj;
+
+    if(!name || '\0' == name[0]){
+        return "";
+    }
+    if(nullptr == (ps3obj = GetS3Obj(name))){
+        return "";
+    }
+    return ps3obj->etag;
+}
+
+bool S3ObjList::IsDir(const char* name) const
+{
+    const s3obj_entry* ps3obj;
+
+    if(nullptr == (ps3obj = GetS3Obj(name))){
+        return false;
+    }
+    return ps3obj->is_dir;
+}
+
+bool S3ObjList::GetLastName(std::string& lastname) const
+{
+    bool result = false;
+    lastname = "";
+    for(auto iter = objects.cbegin(); iter != objects.cend(); ++iter){
+        if(!iter->second.orgname.empty()){
+            if(lastname.compare(iter->second.orgname) < 0){
+                lastname = (*iter).second.orgname;
+                result = true;
+            }
+        }else{
+            if(lastname.compare(iter->second.normalname) < 0){
+                lastname = (*iter).second.normalname;
+                result = true;
+            }
+        }
+    }
+    return result;
+}
+
+bool S3ObjList::GetNameList(s3obj_list_t& list, bool OnlyNormalized, bool CutSlash) const
+{
+    s3obj_t::const_iterator iter;
+
+    for(iter = objects.cbegin(); objects.cend() != iter; ++iter){
+        if(OnlyNormalized && !iter->second.normalname.empty()){
+            continue;
+        }
+        std::string name = (*iter).first;
+        if(CutSlash && 1 < name.length() && '/' == *name.rbegin()){
+            // only "/" std::string is skipped this.
+            name.erase(name.length() - 1);
+        }
+        list.push_back(name);
+    }
+    return true;
+}
+
+typedef std::map<std::string, bool> s3obj_h_t;
+
+bool S3ObjList::MakeHierarchizedList(s3obj_list_t& list, bool haveSlash)
+{
+    s3obj_h_t h_map;
+
+    for(auto liter = list.cbegin(); list.cend() != liter; ++liter){
+        std::string strtmp = (*liter);
+        if(1 < strtmp.length() && '/' == *strtmp.rbegin()){
+            strtmp.erase(strtmp.length() - 1);
+        }
+        h_map[strtmp] = true;
+
+        // check hierarchized directory
+        for(std::string::size_type pos = strtmp.find_last_of('/'); std::string::npos != pos; pos = strtmp.find_last_of('/')){
+            strtmp.erase(pos);
+            if(strtmp.empty() || "/" == strtmp){
+                break;
+            }
+            if(h_map.cend() == h_map.find(strtmp)){
+                // not found
+                h_map[strtmp] = false;
+            }
+        }
+    }
+
+    // check map and add lost hierarchized directory.
+    for(auto hiter = h_map.cbegin(); hiter != h_map.cend(); ++hiter){
+        if(false == (*hiter).second){
+            // add hierarchized directory.
+            std::string strtmp = (*hiter).first;
+            if(haveSlash){
+                strtmp += "/";
+            }
+            list.push_back(strtmp);
+        }
+    }
+    return true;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/s3objlist.h

@@ -0,0 +1,81 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_S3OBJLIST_H_
+#define S3FS_S3OBJLIST_H_
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+//-------------------------------------------------------------------
+// Structure / Typedef
+//-------------------------------------------------------------------
+struct s3obj_entry{
+    std::string normalname; // normalized name: if empty, object is normalized name.
+    std::string orgname;    // original name: if empty, object is original name.
+    std::string etag;
+    bool        is_dir = false;
+};
+
+typedef std::map<std::string, struct s3obj_entry> s3obj_t;
+typedef std::vector<std::string> s3obj_list_t;
+
+//-------------------------------------------------------------------
+// Class S3ObjList
+//-------------------------------------------------------------------
+class S3ObjList
+{
+    private:
+        s3obj_t objects;
+        std::vector<std::string> common_prefixes;
+
+        bool insert_normalized(const char* name, const char* normalized, bool is_dir);
+        const s3obj_entry* GetS3Obj(const char* name) const;
+
+        s3obj_t::const_iterator cbegin() const { return objects.cbegin(); }
+        s3obj_t::const_iterator cend() const { return objects.cend(); }
+
+    public:
+        bool IsEmpty() const { return objects.empty(); }
+        bool insert(const char* name, const char* etag = nullptr, bool is_dir = false);
+        std::string GetOrgName(const char* name) const;
+        std::string GetNormalizedName(const char* name) const;
+        std::string GetETag(const char* name) const;
+        const std::vector<std::string>& GetCommonPrefixes() const { return common_prefixes; }
+        void AddCommonPrefix(std::string prefix) { common_prefixes.push_back(std::move(prefix)); }
+        bool IsDir(const char* name) const;
+        bool GetNameList(s3obj_list_t& list, bool OnlyNormalized = true, bool CutSlash = true) const;
+        bool GetLastName(std::string& lastname) const;
+
+        static bool MakeHierarchizedList(s3obj_list_t& list, bool haveSlash);
+};
+
+#endif // S3FS_S3OBJLIST_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/sighandlers.cpp

@@ -0,0 +1,249 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <csignal>
+#include <thread>
+#include <utility>
+
+#include "psemaphore.h"
+#include "s3fs_logger.h"
+#include "sighandlers.h"
+#include "fdcache.h"
+
+//-------------------------------------------------------------------
+// Class S3fsSignals
+//-------------------------------------------------------------------
+std::unique_ptr<S3fsSignals> S3fsSignals::pSingleton;
+bool S3fsSignals::enableUsr1         = false;
+
+//-------------------------------------------------------------------
+// Class methods
+//-------------------------------------------------------------------
+bool S3fsSignals::Initialize()
+{
+    if(!S3fsSignals::pSingleton){
+        S3fsSignals::pSingleton.reset(new S3fsSignals);
+    }
+    return true;
+}
+
+bool S3fsSignals::Destroy()
+{
+    S3fsSignals::pSingleton.reset();
+    return true;
+}
+
+void S3fsSignals::HandlerUSR1(int sig)
+{
+    if(SIGUSR1 != sig){
+        S3FS_PRN_ERR("The handler for SIGUSR1 received signal(%d)", sig);
+        return;
+    }
+
+    S3fsSignals* pSigobj = S3fsSignals::get();
+    if(!pSigobj){
+        S3FS_PRN_ERR("S3fsSignals object is not initialized.");
+        return;
+    }
+
+    if(!pSigobj->WakeupUsr1Thread()){
+        S3FS_PRN_ERR("Failed to wakeup the thread for SIGUSR1.");
+        return;
+    }
+}
+
+bool S3fsSignals::SetUsr1Handler(const char* path)
+{
+    if(!FdManager::HaveLseekHole()){
+        S3FS_PRN_ERR("Could not set SIGUSR1 for checking cache, because this system does not support SEEK_DATA/SEEK_HOLE in lseek function.");
+        return false;
+    }
+
+    // set output file
+    if(!FdManager::SetCacheCheckOutput(path)){
+        S3FS_PRN_ERR("Could not set output file(%s) for checking cache.", path ? path : "null(stdout)");
+        return false;
+    }
+
+    S3fsSignals::enableUsr1 = true;
+
+    return true;
+}
+
+void S3fsSignals::CheckCacheWorker(Semaphore* pSem)
+{
+    if(!pSem){
+        return;
+    }
+    if(!S3fsSignals::enableUsr1){
+        return;
+    }
+
+    // wait and loop
+    while(S3fsSignals::enableUsr1){
+        // wait
+        pSem->wait();
+
+        // cppcheck-suppress unmatchedSuppression
+        // cppcheck-suppress knownConditionTrueFalse
+        if(!S3fsSignals::enableUsr1){
+            break;    // assap
+        }
+
+        // check all cache
+        if(!FdManager::get()->CheckAllCache()){
+            S3FS_PRN_ERR("Processing failed due to some problem.");
+        }
+
+        // do not allow request queuing
+        while(pSem->try_wait());
+    }
+}
+
+void S3fsSignals::HandlerUSR2(int sig)
+{
+    if(SIGUSR2 == sig){
+        S3fsLog::BumpupLogLevel();
+    }else{
+        S3FS_PRN_ERR("The handler for SIGUSR2 received signal(%d)", sig);
+    }
+}
+
+bool S3fsSignals::InitUsr2Handler()
+{
+    struct sigaction sa{};
+    sa.sa_handler = S3fsSignals::HandlerUSR2;
+    sa.sa_flags   = SA_RESTART;
+    if(0 != sigaction(SIGUSR2, &sa, nullptr)){
+        return false;
+    }
+    return true;
+}
+
+void S3fsSignals::HandlerHUP(int sig)
+{
+    if(SIGHUP == sig){
+        S3fsLog::ReopenLogfile();
+    }else{
+        S3FS_PRN_ERR("The handler for SIGHUP received signal(%d)", sig);
+    }
+}
+
+bool S3fsSignals::InitHupHandler()
+{
+    struct sigaction sa{};
+    sa.sa_handler = S3fsSignals::HandlerHUP;
+    sa.sa_flags   = SA_RESTART;
+    if(0 != sigaction(SIGHUP, &sa, nullptr)){
+        return false;
+    }
+    return true;
+}
+
+//-------------------------------------------------------------------
+// Methods
+//-------------------------------------------------------------------
+S3fsSignals::S3fsSignals()
+{
+    if(S3fsSignals::enableUsr1){
+        if(!InitUsr1Handler()){
+            S3FS_PRN_ERR("failed creating thread for SIGUSR1 handler, but continue...");
+        }
+    }
+    if(!S3fsSignals::InitUsr2Handler()){
+        S3FS_PRN_ERR("failed to initialize SIGUSR2 handler for bumping log level, but continue...");
+    }
+    if(!S3fsSignals::InitHupHandler()){
+        S3FS_PRN_ERR("failed to initialize SIGHUP handler for reopen log file, but continue...");
+    }
+}
+
+S3fsSignals::~S3fsSignals()
+{
+    if(S3fsSignals::enableUsr1){
+        if(!DestroyUsr1Handler()){
+            S3FS_PRN_ERR("failed stopping thread for SIGUSR1 handler, but continue...");
+        }
+    }
+}
+
+bool S3fsSignals::InitUsr1Handler()
+{
+    if(pThreadUsr1 || pSemUsr1){
+        S3FS_PRN_ERR("Already run thread for SIGUSR1");
+        return false;
+    }
+
+    // create thread
+    std::unique_ptr<Semaphore> pSemUsr1_tmp(new Semaphore(0));
+    pThreadUsr1.reset(new std::thread(S3fsSignals::CheckCacheWorker, pSemUsr1_tmp.get()));
+    pSemUsr1 = std::move(pSemUsr1_tmp);
+
+    // set handler
+    struct sigaction sa{};
+    sa.sa_handler = S3fsSignals::HandlerUSR1;
+    sa.sa_flags   = SA_RESTART;
+    if(0 != sigaction(SIGUSR1, &sa, nullptr)){
+        S3FS_PRN_ERR("Could not set signal handler for SIGUSR1");
+        DestroyUsr1Handler();
+        return false;
+    }
+
+    return true;
+}
+
+bool S3fsSignals::DestroyUsr1Handler()
+{
+    if(!pThreadUsr1 || !pSemUsr1){
+        return false;
+    }
+    // for thread exit
+    S3fsSignals::enableUsr1 = false;
+
+    // wakeup thread
+    pSemUsr1->post();
+
+    // wait for thread exiting
+    pThreadUsr1->join();
+    pSemUsr1.reset();
+    pThreadUsr1.reset();
+
+    return true;
+}
+
+bool S3fsSignals::WakeupUsr1Thread()
+{
+    if(!pThreadUsr1 || !pSemUsr1){
+        S3FS_PRN_ERR("The thread for SIGUSR1 is not setup.");
+        return false;
+    }
+    pSemUsr1->post();
+    return true;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/sighandlers.h

@@ -0,0 +1,81 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_SIGHANDLERS_H_
+#define S3FS_SIGHANDLERS_H_
+
+#include <memory>
+#include <thread>
+
+class Semaphore;
+
+//----------------------------------------------
+// class S3fsSignals
+//----------------------------------------------
+class S3fsSignals
+{
+    private:
+        static std::unique_ptr<S3fsSignals> pSingleton;
+        static bool         enableUsr1;
+
+        std::unique_ptr<std::thread> pThreadUsr1;
+        std::unique_ptr<Semaphore> pSemUsr1;
+
+    protected:
+        static S3fsSignals* get() { return pSingleton.get(); }
+
+        static void HandlerUSR1(int sig);
+        static void CheckCacheWorker(Semaphore* pSem);
+
+        static void HandlerUSR2(int sig);
+        static bool InitUsr2Handler();
+
+        static void HandlerHUP(int sig);
+        static bool InitHupHandler();
+
+        S3fsSignals();
+
+        bool InitUsr1Handler();
+        bool DestroyUsr1Handler();
+        bool WakeupUsr1Thread();
+
+    public:
+        ~S3fsSignals();
+        S3fsSignals(const S3fsSignals&) = delete;
+        S3fsSignals(S3fsSignals&&) = delete;
+        S3fsSignals& operator=(const S3fsSignals&) = delete;
+        S3fsSignals& operator=(S3fsSignals&&) = delete;
+
+        static bool Initialize();
+        static bool Destroy();
+
+        static bool SetUsr1Handler(const char* path);
+};
+
+#endif // S3FS_SIGHANDLERS_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/string_util.h

@@ -17,52 +17,114 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
+
 #ifndef S3FS_STRING_UTIL_H_
 #define S3FS_STRING_UTIL_H_
 
-/*
- * A collection of string utilities for manipulating URLs and HTTP responses.
- */
-#include <string.h>
-#include <syslog.h>
-#include <sys/types.h>
-
+#include <cstring>
+#include <ctime>
 #include <string>
 
-static const std::string SPACES = " \t\r\n";
+//
+// A collection of string utilities for manipulating URLs and HTTP responses.
+//
+//-------------------------------------------------------------------
+// Global variables
+//-------------------------------------------------------------------
+static constexpr char SPACES[] = " \t\r\n";
 
-static inline int STR2NCMP(const char *str1, const char *str2) { return strncmp(str1, str2, strlen(str2)); }
+//-------------------------------------------------------------------
+// Inline functions
+//-------------------------------------------------------------------
+static inline bool is_prefix(const char *str, const char *prefix) { return strncmp(str, prefix, strlen(prefix)) == 0; }
+static inline const char* SAFESTRPTR(const char *strptr) { return strptr ? strptr : ""; }
 
-template <class T> std::string str(T value);
+//-------------------------------------------------------------------
+// Macros(WTF8)
+//-------------------------------------------------------------------
+#define WTF8_ENCODE(ARG)  \
+        std::string ARG##_buf; \
+        const char * ARG = _##ARG; \
+        if (use_wtf8 && s3fs_wtf8_encode( _##ARG, 0 )) { \
+            s3fs_wtf8_encode( _##ARG, &ARG##_buf); \
+            ARG = ARG##_buf.c_str(); \
+        }
 
-// Convert string to off_t.  Throws std::invalid_argument and std::out_of_range on bad input.
-off_t s3fs_strtoofft(const char* str, int base = 0);
+//-------------------------------------------------------------------
+// Utilities
+//-------------------------------------------------------------------
+// TODO: rename to to_string?
+std::string str(const struct timespec& value);
 
-std::string trim_left(const std::string &s, const std::string &t = SPACES);
-std::string trim_right(const std::string &s, const std::string &t = SPACES);
-std::string trim(const std::string &s, const std::string &t = SPACES);
+#ifdef __MSYS__
+//
+// Polyfill for strptime function.
+//
+char* strptime(const char* s, const char* f, struct tm* tm);
+#endif
+//
+// Convert string to off_t.  Returns false on bad input.
+// Replacement for C++11 std::stoll.
+//
+bool s3fs_strtoofft(off_t* value, const char* str, int base = 0);
+//
+// This function returns 0 if a value that cannot be converted is specified.
+// Only call if 0 is considered an error and the operation can continue.
+//
+off_t cvt_strtoofft(const char* str, int base);
+
+//
+// String Manipulation
+//
+std::string trim_left(std::string s, const char *t = SPACES);
+std::string trim_right(std::string s, const char *t = SPACES);
+std::string trim(std::string s, const char *t = SPACES);
 std::string lower(std::string s);
-std::string get_date_rfc850(void);
+std::string peeloff(const std::string& s);
+
+//
+// Date string
+//
+std::string get_date_rfc850();
 void get_date_sigv3(std::string& date, std::string& date8601);
 std::string get_date_string(time_t tm);
 std::string get_date_iso8601(time_t tm);
 bool get_unixtime_from_iso8601(const char* pdate, time_t& unixtime);
 bool convert_unixtime_from_option_arg(const char* argv, time_t& unixtime);
-std::string urlEncode(const std::string &s);
-std::string urlEncode2(const std::string &s);
+
+//
+// For encoding
+//
+std::string urlEncodeGeneral(const std::string &s);
+std::string urlEncodePath(const std::string &s);
+std::string urlEncodeQuery(const std::string &s);
 std::string urlDecode(const std::string& s);
+
 bool takeout_str_dquart(std::string& str);
-bool get_keyword_value(std::string& target, const char* keyword, std::string& value);
+bool get_keyword_value(const std::string& target, const char* keyword, std::string& value);
 
-std::string s3fs_hex(const unsigned char* input, size_t length);
-char* s3fs_base64(const unsigned char* input, size_t length);
-unsigned char* s3fs_decode64(const char* input, size_t* plength);
+//
+// For binary string
+//
+std::string s3fs_hex_lower(const unsigned char* input, size_t length);
+std::string s3fs_hex_upper(const unsigned char* input, size_t length);
+std::string s3fs_base64(const unsigned char* input, size_t length);
+std::string s3fs_decode64(const char* input, size_t input_len);
 
+//
+// WTF8
+//
 bool s3fs_wtf8_encode(const char *s, std::string *result);
 std::string s3fs_wtf8_encode(const std::string &s);
 bool s3fs_wtf8_decode(const char *s, std::string *result);
 std::string s3fs_wtf8_decode(const std::string &s);
 
+//
+// For CR in XML
+//
+std::string get_encoded_cr_code(const char* pbase);
+std::string get_decoded_cr_code(const char* pencode);
+
 #endif // S3FS_STRING_UTIL_H_
 
 /*
@@ -70,6 +132,6 @@ std::string s3fs_wtf8_decode(const std::string &s);
 * tab-width: 4
 * c-basic-offset: 4
 * End:
-* vim600: noet sw=4 ts=4 fdm=marker
-* vim<600: noet sw=4 ts=4
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
 */

src/test_curl_util.cpp

@@ -0,0 +1,167 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2020 Andrew Gaul <andrew@gaul.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <string>
+#include <cstring>
+
+#include "curl_util.h"
+#include "test_util.h"
+
+//---------------------------------------------------------
+// S3fsCred Stub
+//
+// [NOTE]
+// This test program links curl_util.cpp just to use the
+// curl_slist_sort_insert function.
+// This file has a call to S3fsCred::GetBucket(), which
+// results in a link error. That method is not used in
+// this test file, so define a stub class. Linking all
+// implementation of the S3fsCred class or making all
+// stubs is not practical, so this is the best answer.
+//
+class S3fsCred
+{
+    private:
+        static std::string  bucket_name;
+    public:
+        static const std::string& GetBucket();
+};
+
+std::string  S3fsCred::bucket_name;
+
+const std::string& S3fsCred::GetBucket()
+{
+	return S3fsCred::bucket_name;
+}
+//---------------------------------------------------------
+
+#define ASSERT_IS_SORTED(x) assert_is_sorted((x), __FILE__, __LINE__)
+
+void assert_is_sorted(const struct curl_slist* list, const char *file, int line)
+{
+    for(; list != nullptr; list = list->next){
+        std::string key1 = list->data;
+        key1.erase(key1.find(':'));
+        std::string key2 = list->data;
+        key2.erase(key2.find(':'));
+        std::cerr << "key1: " << key1 << " key2: " << key2 << std::endl;
+
+        if(strcasecmp(key1.c_str(), key2.c_str()) > 0){
+            std::cerr << "not sorted: " << key1 << " " << key2 << " at " << file << ":" << line << std::endl;
+            std::exit(1);
+        }
+    }
+    std::cerr << std::endl;
+}
+
+size_t curl_slist_length(const struct curl_slist* list)
+{
+    size_t len = 0;
+    for(; list != nullptr; list = list->next){
+        ++len;
+    }
+    return len;
+}
+
+void test_sort_insert()
+{
+    struct curl_slist* list = nullptr;
+    ASSERT_IS_SORTED(list);
+    // add to head
+    list = curl_slist_sort_insert(list, "2", "val");
+    ASSERT_IS_SORTED(list);
+    // add to tail
+    list = curl_slist_sort_insert(list, "4", "val");
+    ASSERT_IS_SORTED(list);
+    // add in between
+    list = curl_slist_sort_insert(list, "3", "val");
+    ASSERT_IS_SORTED(list);
+    // add to head
+    list = curl_slist_sort_insert(list, "1", "val");
+    ASSERT_IS_SORTED(list);
+    ASSERT_STREQUALS("1: val", list->data);
+    // replace head
+    list = curl_slist_sort_insert(list, "1", "val2");
+    ASSERT_IS_SORTED(list);
+    ASSERT_EQUALS(static_cast<size_t>(4), curl_slist_length(list));
+    ASSERT_STREQUALS("1: val2", list->data);
+    curl_slist_free_all(list);
+}
+
+void test_slist_remove()
+{
+    struct curl_slist* list = nullptr;
+
+    // remove no elements
+    ASSERT_EQUALS(static_cast<size_t>(0), curl_slist_length(list));
+    list = curl_slist_remove(list, "1");
+    ASSERT_EQUALS(static_cast<size_t>(0), curl_slist_length(list));
+
+    // remove only element
+    list = nullptr;
+    list = curl_slist_sort_insert(list, "1", "val");
+    ASSERT_EQUALS(static_cast<size_t>(1), curl_slist_length(list));
+    list = curl_slist_remove(list, "1");
+    ASSERT_EQUALS(static_cast<size_t>(0), curl_slist_length(list));
+
+    // remove head element
+    list = nullptr;
+    list = curl_slist_sort_insert(list, "1", "val");
+    list = curl_slist_sort_insert(list, "2", "val");
+    ASSERT_EQUALS(static_cast<size_t>(2), curl_slist_length(list));
+    list = curl_slist_remove(list, "1");
+    ASSERT_EQUALS(static_cast<size_t>(1), curl_slist_length(list));
+    curl_slist_free_all(list);
+
+    // remove tail element
+    list = nullptr;
+    list = curl_slist_sort_insert(list, "1", "val");
+    list = curl_slist_sort_insert(list, "2", "val");
+    ASSERT_EQUALS(static_cast<size_t>(2), curl_slist_length(list));
+    list = curl_slist_remove(list, "2");
+    ASSERT_EQUALS(static_cast<size_t>(1), curl_slist_length(list));
+    curl_slist_free_all(list);
+
+    // remove middle element
+    list = nullptr;
+    list = curl_slist_sort_insert(list, "1", "val");
+    list = curl_slist_sort_insert(list, "2", "val");
+    list = curl_slist_sort_insert(list, "3", "val");
+    ASSERT_EQUALS(static_cast<size_t>(3), curl_slist_length(list));
+    list = curl_slist_remove(list, "2");
+    ASSERT_EQUALS(static_cast<size_t>(2), curl_slist_length(list));
+    curl_slist_free_all(list);
+}
+
+int main(int argc, const char *argv[])
+{
+    test_sort_insert();
+    test_slist_remove();
+    return 0;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/test_page_list.cpp

@@ -0,0 +1,79 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2021 Andrew Gaul <andrew@gaul.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include "fdcache_page.h"
+#include "fdcache_stat.h"
+#include "test_util.h"
+
+bool CacheFileStat::Open() { return false; }  // NOLINT(readability-convert-member-functions-to-static)
+
+void test_compress()
+{
+  PageList list;
+  ASSERT_EQUALS(off_t(0), list.Size());
+
+  list.Init(42, /*is_loaded=*/ false, /*is_modified=*/ false);
+  ASSERT_EQUALS(off_t(42), list.Size());
+  ASSERT_FALSE(list.IsPageLoaded(0, 1));
+
+  list.SetPageLoadedStatus(0, 1, /*pstatus=*/ PageList::page_status::LOADED);
+  ASSERT_TRUE(list.IsPageLoaded(0, 1));
+  ASSERT_FALSE(list.IsPageLoaded(0, 2));
+
+  off_t start = 0;
+  off_t size = 0;
+  ASSERT_TRUE(list.FindUnloadedPage(0, start, size));
+  ASSERT_EQUALS(off_t(1), start);
+  ASSERT_EQUALS(off_t(41), size);
+
+  // test adding subsequent page then compressing
+  list.SetPageLoadedStatus(1, 3, /*pstatus=*/ PageList::page_status::LOADED);
+  list.Compress();
+  ASSERT_TRUE(list.IsPageLoaded(0, 3));
+
+  ASSERT_TRUE(list.FindUnloadedPage(0, start, size));
+  ASSERT_EQUALS(off_t(4), start);
+  ASSERT_EQUALS(off_t(38), size);
+
+  // test adding non-contiguous page then compressing
+  list.SetPageLoadedStatus(5, 1, /*pstatus=*/ PageList::page_status::LOADED);
+  list.Compress();
+
+  ASSERT_TRUE(list.FindUnloadedPage(0, start, size));
+  ASSERT_EQUALS(off_t(4), start);
+  ASSERT_EQUALS(off_t(1), size);
+  list.Dump();
+  printf("\n");
+
+  // test adding page between two pages then compressing
+  list.SetPageLoadedStatus(4, 1, /*pstatus=*/ PageList::page_status::LOADED);
+  list.Compress();
+
+  list.Dump();
+  ASSERT_TRUE(list.FindUnloadedPage(0, start, size));
+  ASSERT_EQUALS(off_t(6), start);
+  ASSERT_EQUALS(off_t(36), size);
+}
+
+int main(int argc, const char *argv[])
+{
+  test_compress();
+  return 0;
+}

src/test_string_util.cpp

@@ -18,109 +18,203 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#include <cstdint>
+#include <cstdlib>
 #include <limits>
-#include <stdint.h>
 #include <string>
 
+#include "s3fs_logger.h"
 #include "string_util.h"
 #include "test_util.h"
 
+//-------------------------------------------------------------------
+// Global variables for test_string_util
+//-------------------------------------------------------------------
+bool foreground                   = false;
+std::string instance_name;
+
 void test_trim()
 {
-  ASSERT_EQUALS(std::string("1234"), trim("  1234  "));
-  ASSERT_EQUALS(std::string("1234"), trim("1234  "));
-  ASSERT_EQUALS(std::string("1234"), trim("  1234"));
-  ASSERT_EQUALS(std::string("1234"), trim("1234"));
+    ASSERT_EQUALS(std::string("1234"), trim("  1234  "));
+    ASSERT_EQUALS(std::string("1234"), trim("1234  "));
+    ASSERT_EQUALS(std::string("1234"), trim("  1234"));
+    ASSERT_EQUALS(std::string("1234"), trim("1234"));
 
-  ASSERT_EQUALS(std::string("1234  "), trim_left("  1234  "));
-  ASSERT_EQUALS(std::string("1234  "), trim_left("1234  "));
-  ASSERT_EQUALS(std::string("1234"), trim_left("  1234"));
-  ASSERT_EQUALS(std::string("1234"), trim_left("1234"));
+    ASSERT_EQUALS(std::string("1234  "), trim_left("  1234  "));
+    ASSERT_EQUALS(std::string("1234  "), trim_left("1234  "));
+    ASSERT_EQUALS(std::string("1234"), trim_left("  1234"));
+    ASSERT_EQUALS(std::string("1234"), trim_left("1234"));
 
-  ASSERT_EQUALS(std::string("  1234"), trim_right("  1234  "));
-  ASSERT_EQUALS(std::string("1234"), trim_right("1234  "));
-  ASSERT_EQUALS(std::string("  1234"), trim_right("  1234"));
-  ASSERT_EQUALS(std::string("1234"), trim_right("1234"));
+    ASSERT_EQUALS(std::string("  1234"), trim_right("  1234  "));
+    ASSERT_EQUALS(std::string("1234"), trim_right("1234  "));
+    ASSERT_EQUALS(std::string("  1234"), trim_right("  1234"));
+    ASSERT_EQUALS(std::string("1234"), trim_right("1234"));
 
-  ASSERT_EQUALS(std::string("0"), str(0));
-  ASSERT_EQUALS(std::string("1"), str(1));
-  ASSERT_EQUALS(std::string("-1"), str(-1));
-  ASSERT_EQUALS(std::string("9223372036854775807"), str(std::numeric_limits<int64_t>::max()));
-  ASSERT_EQUALS(std::string("-9223372036854775808"), str(std::numeric_limits<int64_t>::min()));
-  ASSERT_EQUALS(std::string("0"), str(std::numeric_limits<uint64_t>::min()));
-  ASSERT_EQUALS(std::string("18446744073709551615"), str(std::numeric_limits<uint64_t>::max()));
+    ASSERT_EQUALS(std::string("1234"), peeloff("\"1234\""));            // "1234"   -> 1234
+    ASSERT_EQUALS(std::string("\"1234\""), peeloff("\"\"1234\"\""));    // ""1234"" -> "1234"
+    ASSERT_EQUALS(std::string("\"1234"), peeloff("\"\"1234\""));        // ""1234"  ->  "1234
+    ASSERT_EQUALS(std::string("1234\""), peeloff("\"1234\"\""));        // "1234""  -> 1234"
+    ASSERT_EQUALS(std::string("\"1234"), peeloff("\"1234"));            // "1234    -> "1234
+    ASSERT_EQUALS(std::string("1234\""), peeloff("1234\""));            // 1234"    -> 1234"
+    ASSERT_EQUALS(std::string(" \"1234\""), peeloff(" \"1234\""));      // _"1234"  -> _"1234"
+    ASSERT_EQUALS(std::string("\"1234\" "), peeloff("\"1234\" "));      // "1234"_  -> "1234"_
 }
 
 void test_base64()
 {
-  size_t len;
-  ASSERT_STREQUALS(s3fs_base64(NULL, 0), NULL);
-  ASSERT_STREQUALS(reinterpret_cast<const char *>(s3fs_decode64(NULL, &len)), NULL);
-  ASSERT_STREQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>(""), 0), NULL);
-  ASSERT_STREQUALS(reinterpret_cast<const char *>(s3fs_decode64("", &len)), NULL);
+    std::string buf;
+    char tmpbuf = '\0';
 
-  ASSERT_STREQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("1"), 1), "MQ==");
-  ASSERT_STREQUALS(reinterpret_cast<const char *>(s3fs_decode64("MQ==", &len)), "1");
-  ASSERT_EQUALS(len, static_cast<size_t>(1));
-  ASSERT_STREQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("12"), 2), "MTI=");
-  ASSERT_STREQUALS(reinterpret_cast<const char *>(s3fs_decode64("MTI=", &len)), "12");
-  ASSERT_EQUALS(len, static_cast<size_t>(2));
-  ASSERT_STREQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("123"), 3), "MTIz");
-  ASSERT_STREQUALS(reinterpret_cast<const char *>(s3fs_decode64("MTIz", &len)), "123");
-  ASSERT_EQUALS(len, static_cast<size_t>(3));
-  ASSERT_STREQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("1234"), 4), "MTIzNA==");
-  ASSERT_STREQUALS(reinterpret_cast<const char *>(s3fs_decode64("MTIzNA==", &len)), "1234");
-  ASSERT_EQUALS(len, static_cast<size_t>(4));
+    ASSERT_EQUALS(s3fs_base64(nullptr, 0), std::string(""));
+    buf = s3fs_decode64(nullptr, 0);
+    ASSERT_BUFEQUALS(buf.c_str(), buf.length(), &tmpbuf, 0);
 
-  // TODO: invalid input
+    ASSERT_EQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>(""), 0), std::string(""));
+    buf = s3fs_decode64("", 0);
+    ASSERT_BUFEQUALS(buf.c_str(), buf.length(), &tmpbuf, 0);
+
+    ASSERT_EQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("1"), 1), std::string("MQ=="));
+    buf = s3fs_decode64("MQ==", 4);
+    ASSERT_BUFEQUALS(buf.c_str(), buf.length(), "1", 1);
+    ASSERT_EQUALS(buf.length(), static_cast<size_t>(1));
+
+    ASSERT_EQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("12"), 2), std::string("MTI="));
+    buf = s3fs_decode64("MTI=", 4);
+    ASSERT_BUFEQUALS(buf.c_str(), buf.length(), "12", 2);
+    ASSERT_EQUALS(buf.length(), static_cast<size_t>(2));
+
+    ASSERT_EQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("123"), 3), std::string("MTIz"));
+    buf = s3fs_decode64("MTIz", 4);
+    ASSERT_BUFEQUALS(buf.c_str(), buf.length(), "123", 3);
+    ASSERT_EQUALS(buf.length(), static_cast<size_t>(3));
+
+    ASSERT_EQUALS(s3fs_base64(reinterpret_cast<const unsigned char *>("1234"), 4), std::string("MTIzNA=="));
+    buf = s3fs_decode64("MTIzNA==", 8);
+    ASSERT_BUFEQUALS(buf.c_str(), buf.length(), "1234", 4);
+    ASSERT_EQUALS(buf.length(), static_cast<size_t>(4));
+
+    // TODO: invalid input
 }
 
 void test_strtoofft()
 {
-  ASSERT_EQUALS(s3fs_strtoofft("0"), static_cast<off_t>(0L));
-  ASSERT_EQUALS(s3fs_strtoofft("9"), static_cast<off_t>(9L));
-  try{
-    s3fs_strtoofft("A");
-    abort();
-  }catch(std::exception &e){
-    // expected
-  }
-  ASSERT_EQUALS(s3fs_strtoofft("A", /*base=*/ 16), static_cast<off_t>(10L));
-  ASSERT_EQUALS(s3fs_strtoofft("F", /*base=*/ 16), static_cast<off_t>(15L));
-  ASSERT_EQUALS(s3fs_strtoofft("a", /*base=*/ 16), static_cast<off_t>(10L));
-  ASSERT_EQUALS(s3fs_strtoofft("f", /*base=*/ 16), static_cast<off_t>(15L));
-  ASSERT_EQUALS(s3fs_strtoofft("deadbeef", /*base=*/ 16), static_cast<off_t>(3735928559L));
+    off_t value;
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "0"));
+    ASSERT_EQUALS(value, static_cast<off_t>(0L));
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "9"));
+    ASSERT_EQUALS(value, static_cast<off_t>(9L));
+
+    ASSERT_FALSE(s3fs_strtoofft(&value, "A"));
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "A", /*base=*/ 16));
+    ASSERT_EQUALS(value, static_cast<off_t>(10L));
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "F", /*base=*/ 16));
+    ASSERT_EQUALS(value, static_cast<off_t>(15L));
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "a", /*base=*/ 16));
+    ASSERT_EQUALS(value, static_cast<off_t>(10L));
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "f", /*base=*/ 16));
+    ASSERT_EQUALS(value, static_cast<off_t>(15L));
+
+    ASSERT_TRUE(s3fs_strtoofft(&value, "deadbeef", /*base=*/ 16));
+    ASSERT_EQUALS(value, static_cast<off_t>(3735928559L));
 }
 
 void test_wtf8_encoding()
 {
-  std::string ascii("normal string");
-  std::string utf8("Hyld\xc3\xbdpi \xc3\xbej\xc3\xb3\xc3\xb0""f\xc3\xa9lagsins vex \xc3\xbar k\xc3\xa6rkomnu b\xc3\xb6li \xc3\xad \xc3\xa1st");
-  std::string cp1252("Hyld\xfdpi \xfej\xf3\xf0""f\xe9lagsins vex \xfar k\xe6rkomnu b\xf6li \xed \xe1st");
-  std::string broken = utf8;
-  broken[14] = 0x97;
-  std::string mixed = ascii + utf8 + cp1252;
+    std::string ascii("normal std::string");
+    std::string utf8("Hyld\xc3\xbdpi \xc3\xbej\xc3\xb3\xc3\xb0""f\xc3\xa9lagsins vex \xc3\xbar k\xc3\xa6rkomnu b\xc3\xb6li \xc3\xad \xc3\xa1st");
+    std::string cp1252("Hyld\xfdpi \xfej\xf3\xf0""f\xe9lagsins vex \xfar k\xe6rkomnu b\xf6li \xed \xe1st");
+    std::string broken = utf8;
+    broken[14] = '\x97';
+    std::string mixed = ascii + utf8 + cp1252;
 
-  ASSERT_EQUALS(s3fs_wtf8_encode(ascii), ascii);
-  ASSERT_EQUALS(s3fs_wtf8_decode(ascii), ascii);
-  ASSERT_EQUALS(s3fs_wtf8_encode(utf8), utf8);
-  ASSERT_EQUALS(s3fs_wtf8_decode(utf8), utf8);
+    ASSERT_EQUALS(s3fs_wtf8_encode(ascii), ascii);
+    ASSERT_EQUALS(s3fs_wtf8_decode(ascii), ascii);
+    ASSERT_EQUALS(s3fs_wtf8_encode(utf8), utf8);
+    ASSERT_EQUALS(s3fs_wtf8_decode(utf8), utf8);
 
-  ASSERT_NEQUALS(s3fs_wtf8_encode(cp1252), cp1252);
-  ASSERT_EQUALS(s3fs_wtf8_decode(s3fs_wtf8_encode(cp1252)), cp1252);
+    ASSERT_NEQUALS(s3fs_wtf8_encode(cp1252), cp1252);
+    ASSERT_EQUALS(s3fs_wtf8_decode(s3fs_wtf8_encode(cp1252)), cp1252);
 
-  ASSERT_NEQUALS(s3fs_wtf8_encode(broken), broken);
-  ASSERT_EQUALS(s3fs_wtf8_decode(s3fs_wtf8_encode(broken)), broken);
+    ASSERT_NEQUALS(s3fs_wtf8_encode(broken), broken);
+    ASSERT_EQUALS(s3fs_wtf8_decode(s3fs_wtf8_encode(broken)), broken);
 
-  ASSERT_NEQUALS(s3fs_wtf8_encode(mixed), mixed);
-  ASSERT_EQUALS(s3fs_wtf8_decode(s3fs_wtf8_encode(mixed)), mixed);
+    ASSERT_NEQUALS(s3fs_wtf8_encode(mixed), mixed);
+    ASSERT_EQUALS(s3fs_wtf8_decode(s3fs_wtf8_encode(mixed)), mixed);
 }
 
-int main(int argc, char *argv[])
+void test_cr_encoding()
 {
-  test_trim();
-  test_base64();
-  test_strtoofft();
-  test_wtf8_encoding();
-  return 0;
+    // bse strings
+    std::string base_no("STR");
+
+    std::string base_end_cr1("STR\r");
+    std::string base_mid_cr1("STR\rSTR");
+    std::string base_end_cr2("STR\r\r");
+    std::string base_mid_cr2("STR\r\rSTR");
+
+    std::string base_end_per1("STR%");
+    std::string base_mid_per1("STR%STR");
+    std::string base_end_per2("STR%%");
+    std::string base_mid_per2("STR%%STR");
+
+    std::string base_end_crlf1("STR\r\n");
+    std::string base_mid_crlf1("STR\r\nSTR");
+    std::string base_end_crlf2("STR\r\n\r\n");
+    std::string base_mid_crlf2("STR\r\n\r\nSTR");
+
+    std::string base_end_crper1("STR%\r");
+    std::string base_mid_crper1("STR%\rSTR");
+    std::string base_end_crper2("STR%\r%\r");
+    std::string base_mid_crper2("STR%\r%\rSTR");
+
+    // encode->decode->compare
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_no.c_str()).c_str()),         base_no);
+
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_cr1.c_str()).c_str()),    base_end_cr1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_cr1.c_str()).c_str()),    base_mid_cr1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_cr2.c_str()).c_str()),    base_end_cr2);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_cr2.c_str()).c_str()),    base_mid_cr2);
+
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_per1.c_str()).c_str()),   base_end_per1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_per1.c_str()).c_str()),   base_mid_per1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_per2.c_str()).c_str()),   base_end_per2);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_per2.c_str()).c_str()),   base_mid_per2);
+
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_crlf1.c_str()).c_str()),  base_end_crlf1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_crlf1.c_str()).c_str()),  base_mid_crlf1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_crlf2.c_str()).c_str()),  base_end_crlf2);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_crlf2.c_str()).c_str()),  base_mid_crlf2);
+
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_crper1.c_str()).c_str()), base_end_crper1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_crper1.c_str()).c_str()), base_mid_crper1);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_end_crper2.c_str()).c_str()), base_end_crper2);
+    ASSERT_EQUALS(get_decoded_cr_code(get_encoded_cr_code(base_mid_crper2.c_str()).c_str()), base_mid_crper2);
 }
+
+int main(int argc, const char *argv[])
+{
+    S3fsLog singletonLog;
+
+    test_trim();
+    test_base64();
+    test_strtoofft();
+    test_wtf8_encoding();
+    test_cr_encoding();
+
+    return 0;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/test_util.h

@@ -18,72 +18,90 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  */
 
+#ifndef S3FS_TEST_UTIL_H_
+#define S3FS_TEST_UTIL_H_
+
+#include <cstdio>
 #include <cstdlib>
 #include <iostream>
-#include <stdio.h>
+#include <string>
 
-template <typename T> void assert_equals(const T &x, const T &y, const char *file, int line)
+#include "string_util.h"
+
+template <typename T> inline void assert_equals(const T &x, const T &y, const char *file, int line)
 {
-  if (x != y) {
-    std::cerr << x << " != " << y << " at " << file << ":" << line << std::endl;
-    std::cerr << std::endl;
-    std::exit(1);
-  }
+    if (x != y) {
+        std::cerr << x << " != " << y << " at " << file << ":" << line << std::endl;
+        std::cerr << std::endl;
+        abort();
+    }
 }
 
-template <> void assert_equals(const std::string &x, const std::string &y, const char *file, int line)
+template <> inline void assert_equals(const std::string &x, const std::string &y, const char *file, int line)
 {
-  if (x != y) {
-    std::cerr << x << " != " << y << " at " << file << ":" << line << std::endl;
-    for (unsigned i=0; i<x.length(); i++)
-       fprintf(stderr, "%02x ", (unsigned char)x[i]);
-    std::cerr << std::endl;
-    for (unsigned i=0; i<y.length(); i++)
-       fprintf(stderr, "%02x ", (unsigned char)y[i]);
-    std::cerr << std::endl;
-    std::exit(1);
-  }
+    if (x != y) {
+        std::cerr << x << " != " << y << " at " << file << ":" << line << std::endl;
+        std::cerr << s3fs_hex_lower(reinterpret_cast<const unsigned char *>(x.c_str()), x.size()) << std::endl;
+        std::cerr << s3fs_hex_lower(reinterpret_cast<const unsigned char *>(y.c_str()), y.size()) << std::endl;
+        abort();
+    }
 }
 
 
-template <typename T> void assert_nequals(const T &x, const T &y, const char *file, int line)
+template <typename T> inline void assert_nequals(const T &x, const T &y, const char *file, int line)
 {
-  if (x == y) {
-    std::cerr << x << " == " << y << " at " << file << ":" << line << std::endl;
-    std::exit(1);
-  }
+    if (x == y) {
+        std::cerr << x << " == " << y << " at " << file << ":" << line << std::endl;
+        abort();
+    }
 }
 
-template <> void assert_nequals(const std::string &x, const std::string &y, const char *file, int line)
+template <> inline void assert_nequals(const std::string &x, const std::string &y, const char *file, int line)
 {
-  if (x == y) {
-    std::cerr << x << " == " << y << " at " << file << ":" << line << std::endl;
-    for (unsigned i=0; i<x.length(); i++)
-       fprintf(stderr, "%02x ", (unsigned char)x[i]);
-    std::cerr << std::endl;
-    for (unsigned i=0; i<y.length(); i++)
-       fprintf(stderr, "%02x ", (unsigned char)y[i]);
-    std::cerr << std::endl;
-    std::exit(1);
-  }
+    if (x == y) {
+        std::cerr << x << " == " << y << " at " << file << ":" << line << std::endl;
+        std::cerr << s3fs_hex_lower(reinterpret_cast<const unsigned char *>(x.c_str()), x.size()) << std::endl;
+        std::cerr << s3fs_hex_lower(reinterpret_cast<const unsigned char *>(y.c_str()), y.size()) << std::endl;
+        abort();
+    }
 }
 
-void assert_strequals(const char *x, const char *y, const char *file, int line)
+inline void assert_strequals(const char *x, const char *y, const char *file, int line)
 {
-  if(x == NULL && y == NULL){
-    return;
+  if(x == nullptr && y == nullptr){
+      return;
   // cppcheck-suppress nullPointerRedundantCheck
-  } else if(x == NULL || y == NULL || strcmp(x, y) != 0){
-    std::cerr << (x ? x : "null") << " != " << (y ? y : "null") << " at " << file << ":" << line << std::endl;
-    std::exit(1);
+  } else if(x == nullptr || y == nullptr || strcmp(x, y) != 0){
+      std::cerr << (x ? x : "null") << " != " << (y ? y : "null") << " at " << file << ":" << line << std::endl;
+      abort();
   }
 }
 
-#define ASSERT_EQUALS(x, y) \
-  assert_equals((x), (y), __FILE__, __LINE__)
+inline void assert_bufequals(const char *x, size_t len1, const char *y, size_t len2, const char *file, int line)
+{
+    if(x == nullptr && y == nullptr){
+        return;
+    // cppcheck-suppress nullPointerRedundantCheck
+    } else if(x == nullptr || y == nullptr || len1 != len2 || memcmp(x, y, len1) != 0){
+        std::cerr << (x ? std::string(x, len1) : "null") << " != " << (y ? std::string(y, len2) : "null") << " at " << file << ":" << line << std::endl;
+        abort();
+    }
+}
 
-#define ASSERT_NEQUALS(x, y) \
-  assert_nequals((x), (y), __FILE__, __LINE__)
+#define ASSERT_TRUE(x)          assert_equals((x), true, __FILE__, __LINE__)
+#define ASSERT_FALSE(x)         assert_equals((x), false, __FILE__, __LINE__)
+#define ASSERT_EQUALS(x, y)     assert_equals((x), (y), __FILE__, __LINE__)
+#define ASSERT_NEQUALS(x, y)    assert_nequals((x), (y), __FILE__, __LINE__)
+#define ASSERT_STREQUALS(x, y)  assert_strequals((x), (y), __FILE__, __LINE__)
+#define ASSERT_BUFEQUALS(x, len1, y, len2) assert_bufequals((x), (len1), (y), (len2), __FILE__, __LINE__)
 
-#define ASSERT_STREQUALS(x, y) \
-  assert_strequals((x), (y), __FILE__, __LINE__)
+#endif // S3FS_TEST_UTIL_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/threadpoolman.cpp

@@ -0,0 +1,224 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Takeshi Nakatani <ggtakec.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <future>
+#include <thread>
+#include <utility>
+
+#include "s3fs_logger.h"
+#include "threadpoolman.h"
+
+//------------------------------------------------
+// ThreadPoolMan class variables
+//------------------------------------------------
+std::unique_ptr<ThreadPoolMan> ThreadPoolMan::singleton;
+
+//------------------------------------------------
+// ThreadPoolMan class methods
+//------------------------------------------------
+bool ThreadPoolMan::Initialize(int count)
+{
+    if(ThreadPoolMan::singleton){
+        S3FS_PRN_CRIT("Already singleton for Thread Manager exists.");
+        abort();
+    }
+    ThreadPoolMan::singleton.reset(new ThreadPoolMan(count));
+    return true;
+}
+
+void ThreadPoolMan::Destroy()
+{
+    ThreadPoolMan::singleton.reset();
+}
+
+bool ThreadPoolMan::Instruct(const thpoolman_param& param)
+{
+    if(!ThreadPoolMan::singleton){
+        S3FS_PRN_WARN("The singleton object is not initialized yet.");
+        return false;
+    }
+    ThreadPoolMan::singleton->SetInstruction(param);
+    return true;
+}
+
+//
+// Thread worker
+//
+void ThreadPoolMan::Worker(ThreadPoolMan* psingleton, std::promise<int> promise)
+{
+    if(!psingleton){
+        S3FS_PRN_ERR("The parameter for worker thread is invalid.");
+        promise.set_value(-EIO);
+        return;
+    }
+    S3FS_PRN_INFO3("Start worker thread in ThreadPoolMan.");
+
+    while(!psingleton->IsExit()){
+        // wait
+        psingleton->thpoolman_sem.wait();
+
+        if(psingleton->IsExit()){
+            break;
+        }
+
+        // get instruction
+        thpoolman_param param;
+        {
+            const std::lock_guard<std::mutex> lock(psingleton->thread_list_lock);
+
+            if(psingleton->instruction_list.empty()){
+                S3FS_PRN_DBG("Got a semaphore, but the instruction is empty.");
+                continue;
+            }else{
+                param = psingleton->instruction_list.front();
+                psingleton->instruction_list.pop_front();
+            }
+        }
+
+        void* retval = param.pfunc(param.args);
+        if(nullptr != retval){
+            S3FS_PRN_WARN("The instruction function returned with something error code(%ld).", reinterpret_cast<long>(retval));
+        }
+        if(param.psem){
+            param.psem->post();
+        }
+    }
+
+    promise.set_value(0);
+}
+
+//------------------------------------------------
+// ThreadPoolMan methods
+//------------------------------------------------
+ThreadPoolMan::ThreadPoolMan(int count) : is_exit(false), thpoolman_sem(0)
+{
+    if(count < 1){
+        S3FS_PRN_CRIT("Failed to creating singleton for Thread Manager, because thread count(%d) is under 1.", count);
+        abort();
+    }
+    if(ThreadPoolMan::singleton){
+        S3FS_PRN_CRIT("Already singleton for Thread Manager exists.");
+        abort();
+    }
+
+    // create threads
+    if(!StartThreads(count)){
+        S3FS_PRN_ERR("Failed starting threads at initializing.");
+        abort();
+    }
+}
+
+ThreadPoolMan::~ThreadPoolMan()
+{
+    StopThreads();
+}
+
+bool ThreadPoolMan::IsExit() const
+{
+    return is_exit;
+}
+
+void ThreadPoolMan::SetExitFlag(bool exit_flag)
+{
+    is_exit = exit_flag;
+}
+
+bool ThreadPoolMan::StopThreads()
+{
+    const std::lock_guard<std::mutex> lock(thread_list_lock);
+
+    if(thread_list.empty()){
+        S3FS_PRN_INFO("Any threads are running now, then nothing to do.");
+        return true;
+    }
+
+    // all threads to exit
+    SetExitFlag(true);
+    for(size_t waitcnt = thread_list.size(); 0 < waitcnt; --waitcnt){
+        thpoolman_sem.post();
+    }
+
+    // wait for threads exiting
+    for(auto& pair : thread_list){
+        pair.first.join();
+        long retval = pair.second.get();
+        S3FS_PRN_DBG("join succeeded - return code(%ld)", reinterpret_cast<long>(retval));
+    }
+    thread_list.clear();
+
+    // reset semaphore(to zero)
+    while(thpoolman_sem.try_wait()){
+    }
+
+    return true;
+}
+
+bool ThreadPoolMan::StartThreads(int count)
+{
+    if(count < 1){
+        S3FS_PRN_ERR("Failed to creating threads, because thread count(%d) is under 1.", count);
+        return false;
+    }
+
+    // stop all thread if they are running.
+    // cppcheck-suppress unmatchedSuppression
+    // cppcheck-suppress knownConditionTrueFalse
+    if(!StopThreads()){
+        S3FS_PRN_ERR("Failed to stop existed threads.");
+        return false;
+    }
+
+    // create all threads
+    SetExitFlag(false);
+    for(int cnt = 0; cnt < count; ++cnt){
+        // run thread
+        std::promise<int> promise;
+        std::future<int> future = promise.get_future();
+        std::thread thread(ThreadPoolMan::Worker, this, std::move(promise));
+
+        const std::lock_guard<std::mutex> lock(thread_list_lock);
+        thread_list.emplace_back(std::move(thread), std::move(future));
+    }
+    return true;
+}
+
+void ThreadPoolMan::SetInstruction(const thpoolman_param& param)
+{
+    // set parameter to list
+    {
+        const std::lock_guard<std::mutex> lock(thread_list_lock);
+        instruction_list.push_back(param);
+    }
+
+    // run thread
+    thpoolman_sem.post();
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/threadpoolman.h

@@ -0,0 +1,106 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_THREADPOOLMAN_H_
+#define S3FS_THREADPOOLMAN_H_
+
+#include <atomic>
+#include <future>
+#include <list>
+#include <mutex>
+#include <vector>
+
+#include "common.h"
+#include "psemaphore.h"
+
+//------------------------------------------------
+// Typedefs for functions and structures
+//------------------------------------------------
+//
+// Prototype function
+//
+typedef void* (*thpoolman_worker)(void*);
+
+//
+// Parameter structure
+//
+// [NOTE]
+// The args member is a value that is an argument of the worker function.
+// The psem member is allowed nullptr. If it is not nullptr, the post() method is
+// called when finishing the function.
+//
+struct thpoolman_param
+{
+    void*            args = nullptr;
+    Semaphore*       psem = nullptr;
+    thpoolman_worker pfunc = nullptr;
+};
+
+typedef std::list<thpoolman_param> thpoolman_params_t;
+
+//------------------------------------------------
+// Class ThreadPoolMan
+//------------------------------------------------
+class ThreadPoolMan
+{
+    private:
+        static std::unique_ptr<ThreadPoolMan> singleton;
+
+        std::atomic<bool>     is_exit;
+        Semaphore             thpoolman_sem;
+
+        std::mutex            thread_list_lock;
+        std::vector<std::pair<std::thread, std::future<int>>> thread_list GUARDED_BY(thread_list_lock);
+        thpoolman_params_t    instruction_list GUARDED_BY(thread_list_lock);
+
+    private:
+        static void Worker(ThreadPoolMan* psingleton, std::promise<int> promise);
+
+        explicit ThreadPoolMan(int count = 1);
+
+        bool IsExit() const;
+        void SetExitFlag(bool exit_flag);
+
+        bool StopThreads();
+        bool StartThreads(int count);
+        void SetInstruction(const thpoolman_param& pparam);
+
+    public:
+        ~ThreadPoolMan();
+        ThreadPoolMan(const ThreadPoolMan&) = delete;
+        ThreadPoolMan(ThreadPoolMan&&) = delete;
+        ThreadPoolMan& operator=(const ThreadPoolMan&) = delete;
+        ThreadPoolMan& operator=(ThreadPoolMan&&) = delete;
+
+        static bool Initialize(int count);
+        static void Destroy();
+        static bool Instruct(const thpoolman_param& pparam);
+};
+
+#endif // S3FS_THREADPOOLMAN_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

src/types.h

@@ -0,0 +1,365 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2007 Randy Rizun <rrizun@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#ifndef S3FS_TYPES_H_
+#define S3FS_TYPES_H_
+
+#include <cstdlib>
+#include <cstdint>
+#include <cstring>
+#include <string>
+#include <map>
+#include <list>
+#include <utility>
+#include <vector>
+
+//
+// For extended attribute
+// (HAVE_XXX symbols are defined in config.h)
+//
+#ifdef HAVE_SYS_EXTATTR_H
+#include <sys/extattr.h>
+#elif HAVE_ATTR_XATTR_H
+#include <attr/xattr.h>
+#elif HAVE_SYS_XATTR_H
+#include <sys/xattr.h>
+#endif
+
+//-------------------------------------------------------------------
+// xattrs_t
+//-------------------------------------------------------------------
+//
+// Header "x-amz-meta-xattr" is for extended attributes.
+// This header is url encoded string which is json formatted.
+//   x-amz-meta-xattr:urlencode({"xattr-1":"base64(value-1)","xattr-2":"base64(value-2)","xattr-3":"base64(value-3)"})
+//
+typedef std::map<std::string, std::string> xattrs_t;
+
+//-------------------------------------------------------------------
+// acl_t
+//-------------------------------------------------------------------
+enum class acl_t : uint8_t {
+    PRIVATE,
+    PUBLIC_READ,
+    PUBLIC_READ_WRITE,
+    AWS_EXEC_READ,
+    AUTHENTICATED_READ,
+    BUCKET_OWNER_READ,
+    BUCKET_OWNER_FULL_CONTROL,
+    LOG_DELIVERY_WRITE,
+    UNKNOWN
+};
+
+inline const char* str(acl_t value)
+{
+    switch(value){
+    case acl_t::PRIVATE:
+        return "private";
+    case acl_t::PUBLIC_READ:
+        return "public-read";
+    case acl_t::PUBLIC_READ_WRITE:
+        return "public-read-write";
+    case acl_t::AWS_EXEC_READ:
+        return "aws-exec-read";
+    case acl_t::AUTHENTICATED_READ:
+        return "authenticated-read";
+    case acl_t::BUCKET_OWNER_READ:
+        return "bucket-owner-read";
+    case acl_t::BUCKET_OWNER_FULL_CONTROL:
+        return "bucket-owner-full-control";
+    case acl_t::LOG_DELIVERY_WRITE:
+        return "log-delivery-write";
+    case acl_t::UNKNOWN:
+        return nullptr;
+    }
+    abort();
+}
+
+inline acl_t to_acl(const char *acl)
+{
+    if(0 == strcmp(acl, "private")){
+        return acl_t::PRIVATE;
+    }else if(0 == strcmp(acl, "public-read")){
+        return acl_t::PUBLIC_READ;
+    }else if(0 == strcmp(acl, "public-read-write")){
+        return acl_t::PUBLIC_READ_WRITE;
+    }else if(0 == strcmp(acl, "aws-exec-read")){
+        return acl_t::AWS_EXEC_READ;
+    }else if(0 == strcmp(acl, "authenticated-read")){
+        return acl_t::AUTHENTICATED_READ;
+    }else if(0 == strcmp(acl, "bucket-owner-read")){
+        return acl_t::BUCKET_OWNER_READ;
+    }else if(0 == strcmp(acl, "bucket-owner-full-control")){
+        return acl_t::BUCKET_OWNER_FULL_CONTROL;
+    }else if(0 == strcmp(acl, "log-delivery-write")){
+        return acl_t::LOG_DELIVERY_WRITE;
+    }else{
+        return acl_t::UNKNOWN;
+    }
+}
+
+//-------------------------------------------------------------------
+// sse_type_t
+//-------------------------------------------------------------------
+enum class sse_type_t : uint8_t {
+    SSE_DISABLE = 0,      // not use server side encrypting
+    SSE_S3,               // server side encrypting by S3 key
+    SSE_C,                // server side encrypting by custom key
+    SSE_KMS               // server side encrypting by kms id
+};
+
+enum class signature_type_t  : uint8_t {
+    V2_ONLY,
+    V4_ONLY,
+    V2_OR_V4
+};
+
+//----------------------------------------------
+// etaglist_t / filepart / untreatedpart
+//----------------------------------------------
+//
+// Etag string and part number pair
+//
+struct etagpair
+{
+    std::string  etag;        // expected etag value
+    int          part_num;    // part number
+
+    explicit etagpair(const char* petag = nullptr, int part = -1) : etag(petag ? petag : ""), part_num(part) {}
+
+    ~etagpair()
+    {
+      clear();
+    }
+
+    void clear()
+    {
+        etag.clear();
+        part_num = -1;
+    }
+};
+
+// Requires pointer stability and thus must be a list not a vector
+typedef std::list<etagpair> etaglist_t;
+
+struct petagpool
+{
+    // Requires pointer stability and thus must be a list not a vector
+    std::list<etagpair> petaglist;
+
+    ~petagpool()
+    {
+        clear();
+    }
+
+    void clear()
+    {
+        petaglist.clear();
+    }
+
+    etagpair* add(const etagpair& etag_entity)
+    {
+        petaglist.push_back(etag_entity);
+        return &petaglist.back();
+    }
+};
+
+//
+// Each part information for Multipart upload
+//
+struct filepart
+{
+    bool         uploaded = false;  // does finish uploading
+    std::string  etag;        // expected etag value
+    int          fd;          // base file(temporary full file) descriptor
+    off_t        startpos;    // seek fd point for uploading
+    off_t        size;        // uploading size
+    bool         is_copy;     // whether is copy multipart
+    etagpair*    petag;       // use only parallel upload
+
+    explicit filepart(bool is_uploaded = false, int _fd = -1, off_t part_start = 0, off_t part_size = -1, bool is_copy_part = false, etagpair* petagpair = nullptr) : fd(_fd), startpos(part_start), size(part_size), is_copy(is_copy_part), petag(petagpair) {}
+
+    ~filepart()
+    {
+      clear();
+    }
+
+    void clear()
+    {
+        uploaded = false;
+        etag     = "";
+        fd       = -1;
+        startpos = 0;
+        size     = -1;
+        is_copy  = false;
+        petag    = nullptr;
+    }
+
+    void add_etag_list(etaglist_t& list, int partnum = -1)
+    {
+        if(-1 == partnum){
+            partnum = static_cast<int>(list.size()) + 1;
+        }
+        list.emplace_back(nullptr, partnum);
+        petag = &list.back();
+    }
+
+    void set_etag(etagpair* petagobj)
+    {
+        petag = petagobj;
+    }
+
+    int get_part_number() const
+    {
+        if(!petag){
+            return -1;
+        }
+        return petag->part_num;
+    }
+};
+
+typedef std::vector<filepart> filepart_list_t;
+
+//
+// Each part information for Untreated parts
+//
+struct untreatedpart
+{
+    off_t start;            // untreated start position
+    off_t size;             // number of untreated bytes
+    long  untreated_tag;    // untreated part tag
+
+    explicit untreatedpart(off_t part_start = 0, off_t part_size = 0, long part_untreated_tag = 0) : start(part_start), size(part_size), untreated_tag(part_untreated_tag)
+    {
+        if(part_start < 0 || part_size <= 0){
+            clear();        // wrong parameter, so clear value.
+        }
+    }
+
+    ~untreatedpart()
+    {
+        clear();
+    }
+
+    void clear()
+    {
+        start  = 0;
+        size   = 0;
+        untreated_tag = 0;
+    }
+
+    // [NOTE]
+    // Check if the areas overlap
+    // However, even if the areas do not overlap, this method returns true if areas are adjacent.
+    //
+    bool check_overlap(off_t chk_start, off_t chk_size) const
+    {
+        if(chk_start < 0 || chk_size <= 0 || start < 0 || size <= 0 || (chk_start + chk_size) < start || (start + size) < chk_start){
+            return false;
+        }
+        return true;
+    }
+
+    bool stretch(off_t add_start, off_t add_size, long tag)
+    {
+        if(!check_overlap(add_start, add_size)){
+            return false;
+        }
+        off_t new_start      = std::min(start, add_start);
+        off_t new_next_start = std::max((start + size), (add_start + add_size));
+
+        start         = new_start;
+        size          = new_next_start - new_start;
+        untreated_tag = tag;
+
+        return true;
+    }
+};
+
+typedef std::vector<untreatedpart> untreated_list_t;
+
+//
+// Information on each part of multipart upload
+//
+struct mp_part
+{
+    off_t  start;
+    off_t  size;
+    int    part_num;        // Set only for information to upload
+
+    explicit mp_part(off_t set_start = 0, off_t set_size = 0, int part = 0) : start(set_start), size(set_size), part_num(part) {}
+};
+
+typedef std::vector<struct mp_part> mp_part_list_t;
+
+inline off_t total_mp_part_list(const mp_part_list_t& mplist)
+{
+    off_t size = 0;
+    for(auto iter = mplist.cbegin(); iter != mplist.cend(); ++iter){
+        size += iter->size;
+    }
+    return size;
+}
+
+//
+// Rename directory struct
+//
+struct mvnode
+{
+    mvnode(std::string old_path, std::string new_path, bool is_dir, bool is_normdir)
+        : old_path(std::move(old_path))
+        , new_path(std::move(new_path))
+        , is_dir(is_dir)
+        , is_normdir(is_normdir)
+    {}
+    std::string old_path;
+    std::string new_path;
+    bool is_dir;
+    bool is_normdir;
+};
+
+//-------------------------------------------------------------------
+// mimes_t
+//-------------------------------------------------------------------
+struct case_insensitive_compare_func
+{
+    bool operator()(const std::string& a, const std::string& b) const {
+        return strcasecmp(a.c_str(), b.c_str()) < 0;
+    }
+};
+typedef std::map<std::string, std::string, case_insensitive_compare_func> mimes_t;
+
+//-------------------------------------------------------------------
+// Typedefs specialized for use
+//-------------------------------------------------------------------
+typedef std::vector<std::string>           readline_t;
+typedef std::map<std::string, std::string> kvmap_t;
+typedef std::map<std::string, kvmap_t>     bucketkvmap_t;
+
+#endif // S3FS_TYPES_H_
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

test/Makefile.am

@@ -17,14 +17,45 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 ######################################################################
+
 TESTS=small-integration-test.sh
 
 EXTRA_DIST = \
-   integration-test-common.sh \
-   require-root.sh \
-   small-integration-test.sh \
-   mergedir.sh \
-   sample_delcache.sh \
-   sample_ahbe.conf
+    integration-test-common.sh \
+    small-integration-test.sh \
+    mergedir.sh \
+    sample_delcache.sh \
+    sample_ahbe.conf
 
 testdir = test
+
+noinst_PROGRAMS = \
+    junk_data \
+    write_multiblock \
+    mknod_test \
+    truncate_read_file \
+    cr_filename
+
+junk_data_SOURCES          = junk_data.cc
+write_multiblock_SOURCES   = write_multiblock.cc
+mknod_test_SOURCES         = mknod_test.cc
+truncate_read_file_SOURCES = truncate_read_file.cc
+cr_filename_SOURCES        = cr_filename.cc
+
+clang-tidy:
+	clang-tidy \
+    $(junk_data_SOURCES) \
+    $(write_multiblock_SOURCES) \
+    $(mknod_test_SOURCES) \
+    $(truncate_read_file_SOURCES) \
+    $(cr_filename_SOURCES) \
+    -- $(DEPS_CFLAGS) $(CPPFLAGS)
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

test/chaos-http-proxy.conf

@@ -0,0 +1,2 @@
+com.bouncestorage.chaoshttpproxy.http_503=1
+com.bouncestorage.chaoshttpproxy.success=9

test/compile_all_targets.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+COMMON_FLAGS='-O -Wall -Werror'
+
+make clean
+CXXFLAGS="$COMMON_FLAGS" ./configure --with-gnutls
+make --jobs "$(nproc)"
+
+make clean
+CXXFLAGS="$COMMON_FLAGS" ./configure --with-gnutls --with-nettle
+make --jobs "$(nproc)"
+
+make clean
+CXXFLAGS="$COMMON_FLAGS" ./configure --with-nss
+make --jobs "$(nproc)"
+
+make clean
+CXXFLAGS="$COMMON_FLAGS" ./configure --with-openssl
+make --jobs "$(nproc)"
+
+make clean
+CXXFLAGS="$COMMON_FLAGS -std=c++23" ./configure
+make --jobs "$(nproc)"
+
+make clean
+CXXFLAGS="$COMMON_FLAGS -m32" ./configure
+make --jobs "$(nproc)"
+
+make clean
+CXX=clang++ CXXFLAGS="$COMMON_FLAGS -Wshorten-64-to-32" ./configure
+make --jobs "$(nproc)"
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

test/cr_filename.cc

@@ -0,0 +1,77 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2021 Andrew Gaul <andrew@gaul.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cstdio>
+#include <cstdlib>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+// [NOTE]
+// This is a program used for file size inspection.
+// File size checking should be done by the caller of this program.
+// This program truncates the file and reads the file in another process
+// between truncate and flush(close file).
+//
+int main(int argc, const char *argv[])
+{
+    if(argc != 2){
+        fprintf(stderr, "[ERROR] Wrong paraemters\n");
+        fprintf(stdout, "[Usage] cr_filename <base file path>\n");
+        exit(EXIT_FAILURE);
+    }
+
+    int  fd;
+    char filepath[4096];
+    snprintf(filepath, sizeof(filepath), "%s\r", argv[1]);
+    filepath[sizeof(filepath) - 1] = '\0';              // for safety
+
+    // create empty file
+    if(-1 == (fd = open(filepath, O_CREAT|O_RDWR, 0644))){
+        fprintf(stderr, "[ERROR] Could not open file(%s)\n", filepath);
+        exit(EXIT_FAILURE);
+    }
+    close(fd);
+
+    // stat
+    struct stat buf;
+    if(0 != stat(filepath, &buf)){
+        fprintf(stderr, "[ERROR] Could not get stat for file(%s)\n", filepath);
+        exit(EXIT_FAILURE);
+    }
+
+    // remove file
+    if(0 != unlink(filepath)){
+        fprintf(stderr, "[ERROR] Could not remove file(%s)\n", filepath);
+        exit(EXIT_FAILURE);
+    }
+
+    exit(EXIT_SUCCESS);
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

test/filter-suite-log.sh

@@ -28,25 +28,25 @@ func_usage()
     echo ""
 }
 
-PRGNAME=`basename $0`
-SCRIPTDIR=`dirname $0`
-S3FSDIR=`cd ${SCRIPTDIR}/..; pwd`
-TOPDIR=`cd ${S3FSDIR}/test; pwd`
+PRGNAME=$(basename "$0")
+SCRIPTDIR=$(dirname "$0")
+S3FSDIR=$(cd "${SCRIPTDIR}"/.. || exit 1; pwd)
+TOPDIR=$(cd "${S3FSDIR}"/test || exit 1; pwd)
 SUITELOG="${TOPDIR}/test-suite.log"
 TMP_LINENO_FILE="/tmp/.lineno.tmp"
 
 while [ $# -ne 0 ]; do
     if [ "X$1" = "X" ]; then
         break
-    elif [ "X$1" = "X-h" -o "X$1" = "X-H" -o "X$1" = "X--help" -o "X$1" = "X--HELP" ]; then
-        func_usage ${PRGNAME}
+    elif [ "X$1" = "X-h" ] || [ "X$1" = "X-H" ] || [ "X$1" = "X--help" ] || [ "X$1" = "X--HELP" ]; then
+        func_usage "${PRGNAME}"
         exit 0
     else
         SUITELOG=$1
     fi
     shift
 done
-if [ ! -f ${SUITELOG} ]; then
+if [ ! -f "${SUITELOG}" ]; then
     echo "[ERROR] not found ${SUITELOG} log file."
     exit 1
 fi
@@ -59,75 +59,77 @@ fi
 # 2 : passed line of end of one small test(specified in test-utils.sh)
 # 3 : failed line of end of one small test(specified in test-utils.sh)
 #
-grep -n -e 'test_.*: ".*"' -o -e 'test_.* passed' -o -e 'test_.* failed' ${SUITELOG} 2>/dev/null | sed 's/:test_.*: ".*"/ 1/g' | sed 's/:test_.* passed/ 2/g' | sed 's/:test_.* failed/ 3/g' > ${TMP_LINENO_FILE}
+grep -n -e 'test_.*: ".*"' -o -e 'test_.* passed' -o -e 'test_.* failed' "${SUITELOG}" 2>/dev/null | sed 's/:test_.*: ".*"/ 1/g' | sed 's/:test_.* passed/ 2/g' | sed 's/:test_.* failed/ 3/g' > "${TMP_LINENO_FILE}"
 
 #
 # Loop for printing result
 #
 prev_line_type=0
 prev_line_number=1
-while read line; do
+while read -r line; do
     # line is "<line number> <line type>"
-    number_type=($line)
+    #
+    # shellcheck disable=SC2206
+    number_type=(${line})
 
-    head_line_cnt=`expr ${number_type[0]} - 1`
-    tail_line_cnt=`expr ${number_type[0]} - ${prev_line_number}`
+    head_line_cnt=$((number_type[0] - 1))
+    tail_line_cnt=$((number_type[0] - prev_line_number))
 
-    if [ ${number_type[1]} -eq 2 ]; then
+    if [ "${number_type[1]}" -eq 2 ]; then
         echo ""
     fi
-    if [ ${prev_line_type} -eq 1 ]; then
-        if [ ${number_type[1]} -eq 2 ]; then
+    if [ "${prev_line_type}" -eq 1 ]; then
+        if [ "${number_type[1]}" -eq 2 ]; then
             # if passed, cut s3fs information messages
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
-        elif [ ${number_type[1]} -eq 3 ]; then
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
+        elif [ "${number_type[1]}" -eq 3 ]; then
             # if failed, print all
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%'
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%'
         else
             # there is start keyword but not end keyword, so print all
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%'
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%'
         fi
-    elif [ ${prev_line_type} -eq 2 -o ${prev_line_type} -eq 3 ]; then
-        if [ ${number_type[1]} -eq 2 -o ${number_type[1]} -eq 3 ]; then
+    elif [ "${prev_line_type}" -eq 2 ] || [ "${prev_line_type}" -eq 3 ]; then
+        if [ "${number_type[1]}" -eq 2 ] || [ "${number_type[1]}" -eq 3 ]; then
             # previous is end of chmpx, but this type is end of chmpx without start keyword. then print all
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%'
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%'
         else
             # this area is not from start to end, cut s3fs information messages
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
         fi
     else
-        if [ ${number_type[1]} -eq 2 -o ${number_type[1]} -eq 3 ]; then
+        if [ "${number_type[1]}" -eq 2 ] || [ "${number_type[1]}" -eq 3 ]; then
             # previous is normal, but this type is end of chmpx without start keyword. then print all
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%'
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%'
         else
             # this area is normal, cut s3fs information messages
-            head -${head_line_cnt} ${SUITELOG} | tail -${tail_line_cnt} | grep -v -e '[0-9]\+\%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
+            head "-${head_line_cnt}" "${SUITELOG}" | tail "-${tail_line_cnt}" | grep -v -e '[0-9]\+%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
         fi
     fi
-    if [ ${number_type[1]} -eq 3 ]; then
+    if [ "${number_type[1]}" -eq 3 ]; then
         echo ""
     fi
-    prev_line_type=${number_type[1]}
-    prev_line_number=${number_type[0]}
+    prev_line_type="${number_type[1]}"
+    prev_line_number="${number_type[0]}"
 
-done < ${TMP_LINENO_FILE}
+done < "${TMP_LINENO_FILE}"
 
 #
 # Print rest lines
 #
-file_line_cnt=`wc -l ${SUITELOG} | awk '{print $1}'`
-tail_line_cnt=`expr ${file_line_cnt} - ${prev_line_number}`
+file_line_cnt=$(wc -l "${SUITELOG}" | awk '{print $1}')
+tail_line_cnt=$((file_line_cnt - prev_line_number))
 
-if [ ${prev_line_type} -eq 1 ]; then
-    tail -${tail_line_cnt} ${SUITELOG} | grep -v -e '[0-9]\+\%'
+if [ "${prev_line_type}" -eq 1 ]; then
+    tail "-${tail_line_cnt}" "${SUITELOG}" | grep -v -e '[0-9]\+%'
 else
-    tail -${tail_line_cnt} ${SUITELOG} | grep -v -e '[0-9]\+\%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
+    tail "-${tail_line_cnt}" "${SUITELOG}" | grep -v -e '[0-9]\+%' | grep -v -e '^s3fs: ' -a -e '\[INF\]'
 fi
 
 #
 # Remove temp file
 #
-rm -f ${TMP_LINENO_FILE}
+rm -f "${TMP_LINENO_FILE}"
 
 exit 0
 
@@ -136,6 +138,6 @@ exit 0
 # tab-width: 4
 # c-basic-offset: 4
 # End:
-# vim600: noet sw=4 ts=4 fdm=marker
-# vim<600: noet sw=4 ts=4
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
 #

test/integration-test-common.sh

@@ -1,4 +1,23 @@
 #!/bin/bash
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
 
 #
 # Common code for starting an s3fs-fuse mountpoint and an S3Proxy instance 
@@ -8,11 +27,17 @@
 # environment variables:
 #
 # S3FS_CREDENTIALS_FILE=keyfile      s3fs format key file
+# S3FS_PROFILE=name                  s3fs profile to use (overrides key file)
 # TEST_BUCKET_1=bucketname           Name of bucket to use 
 # S3PROXY_BINARY=""                  Specify empty string to skip S3Proxy start
-# S3_URL="https://s3.amazonaws.com"   Specify Amazon AWS as the S3 provider
+# S3_URL="https://s3.amazonaws.com"  Specify Amazon AWS as the S3 provider
+# S3_ENDPOINT="us-east-1"            Specify region
+# TMPDIR="/var/tmp"                  Set to use a temporary directory different
+#                                    from /var/tmp
+# CHAOS_HTTP_PROXY=1                 Test proxy(environment) by CHAOS HTTP PROXY
+# CHAOS_HTTP_PROXY_OPT=1             Test proxy(option) by CHAOS HTTP PROXY
 #
-# Example of running against Amazon S3 using a bucket named "bucket:
+# Example of running against Amazon S3 using a bucket named "bucket":
 #
 # S3FS_CREDENTIALS_FILE=keyfile TEST_BUCKET_1=bucket S3PROXY_BINARY="" S3_URL="https://s3.amazonaws.com" ./small-integration-test.sh
 #
@@ -43,52 +68,73 @@ set -o pipefail
 S3FS=../src/s3fs
 
 # Allow these defaulted values to be overridden
-: ${S3_URL:="https://127.0.0.1:8080"}
-: ${S3FS_CREDENTIALS_FILE:="passwd-s3fs"}
-: ${TEST_BUCKET_1:="s3fs-integration-test"}
+#
+# [NOTE]
+# CHAOS HTTP PROXY does not support HTTPS.
+#
+if [ -z "${CHAOS_HTTP_PROXY}" ] && [ -z "${CHAOS_HTTP_PROXY_OPT}" ]; then
+    : "${S3_URL:="https://127.0.0.1:8080"}"
+else
+    : "${S3_URL:="http://127.0.0.1:8080"}"
+fi
+: "${S3_ENDPOINT:="us-east-1"}"
+: "${S3FS_CREDENTIALS_FILE:="passwd-s3fs"}"
+: "${TEST_BUCKET_1:="s3fs-integration-test"}"
 
 export TEST_BUCKET_1
 export S3_URL
-export TEST_SCRIPT_DIR=`pwd`
+export S3_ENDPOINT
+TEST_SCRIPT_DIR=$(pwd)
+export TEST_SCRIPT_DIR
 export TEST_BUCKET_MOUNT_POINT_1=${TEST_BUCKET_1}
 
-S3PROXY_VERSION="1.7.0"
-S3PROXY_BINARY=${S3PROXY_BINARY-"s3proxy-${S3PROXY_VERSION}"}
+S3PROXY_VERSION="2.0.0"
+S3PROXY_BINARY="${S3PROXY_BINARY-"s3proxy-${S3PROXY_VERSION}"}"
+
+CHAOS_HTTP_PROXY_VERSION="1.1.0"
+CHAOS_HTTP_PROXY_BINARY="chaos-http-proxy-${CHAOS_HTTP_PROXY_VERSION}"
 
 if [ ! -f "$S3FS_CREDENTIALS_FILE" ]
 then
-	echo "Missing credentials file: $S3FS_CREDENTIALS_FILE"
+	echo "Missing credentials file: ${S3FS_CREDENTIALS_FILE}"
 	exit 1
 fi
-chmod 600 "$S3FS_CREDENTIALS_FILE"
+chmod 600 "${S3FS_CREDENTIALS_FILE}"
 
-if [ ! -d $TEST_BUCKET_MOUNT_POINT_1 ]
-then
-	mkdir -p $TEST_BUCKET_MOUNT_POINT_1
+if [ -z "${S3FS_PROFILE}" ]; then
+    AWS_ACCESS_KEY_ID=$(cut -d: -f1 "${S3FS_CREDENTIALS_FILE}")
+    export AWS_ACCESS_KEY_ID
+
+    AWS_SECRET_ACCESS_KEY=$(cut -d: -f2 "${S3FS_CREDENTIALS_FILE}")
+    export AWS_SECRET_ACCESS_KEY
+fi
+
+if [ ! -d "${TEST_BUCKET_MOUNT_POINT_1}" ]; then
+	mkdir -p "${TEST_BUCKET_MOUNT_POINT_1}"
 fi
 
 # This function execute the function parameters $1 times
 # before giving up, with 1 second delays.
 function retry {
-    set +o errexit
-    N=$1; shift;
-    status=0
-    for i in $(seq $N); do
+    local N="$1"
+    shift
+    rc=0
+    for _ in $(seq "${N}"); do
         echo "Trying: $*"
-        "$@"
-        status=$?
-        if [ $status == 0 ]; then
+        # shellcheck disable=SC2068,SC2294
+        eval $@
+        rc=$?
+        if [ "${rc}" -eq 0 ]; then
             break
         fi
         sleep 1
         echo "Retrying: $*"
     done
 
-    if [ $status != 0 ]; then
+    if [ "${rc}" -ne 0 ]; then
         echo "timeout waiting for $*"
     fi
-    set -o errexit
-    return $status
+    return "${rc}"
 }
 
 # Proxy is not started if S3PROXY_BINARY is an empty string
@@ -97,40 +143,68 @@ function retry {
 # 
 function start_s3proxy {
     if [ -n "${PUBLIC}" ]; then
-        S3PROXY_CONFIG="s3proxy-noauth.conf"
+        local S3PROXY_CONFIG="s3proxy-noauth.conf"
     else
-        S3PROXY_CONFIG="s3proxy.conf"
+        if [ -z "${CHAOS_HTTP_PROXY}" ] && [ -z "${CHAOS_HTTP_PROXY_OPT}" ]; then
+            local S3PROXY_CONFIG="s3proxy.conf"
+        else
+            local S3PROXY_CONFIG="s3proxy_http.conf"
+        fi
     fi
 
     if [ -n "${S3PROXY_BINARY}" ]
     then
         if [ ! -e "${S3PROXY_BINARY}" ]; then
-            wget "https://github.com/andrewgaul/s3proxy/releases/download/s3proxy-${S3PROXY_VERSION}/s3proxy" \
-                --quiet -O "${S3PROXY_BINARY}"
+            curl "https://github.com/gaul/s3proxy/releases/download/s3proxy-${S3PROXY_VERSION}/s3proxy" \
+                --fail --location --silent --output "${S3PROXY_BINARY}"
             chmod +x "${S3PROXY_BINARY}"
         fi
 
-        stdbuf -oL -eL java -jar "$S3PROXY_BINARY" --properties $S3PROXY_CONFIG &
+        # generate self-signed SSL certificate
+        #
+        # [NOTE]
+        # The PROXY test is HTTP only, so do not create CA certificates.
+        #
+        if [ -z "${CHAOS_HTTP_PROXY}" ] && [ -z "${CHAOS_HTTP_PROXY_OPT}" ]; then
+            S3PROXY_CACERT_FILE="/tmp/keystore.pem"
+            rm -f /tmp/keystore.jks "${S3PROXY_CACERT_FILE}"
+            printf 'password\npassword\n\n\n\n\n\n\ny' | keytool -genkey -keystore /tmp/keystore.jks -keyalg RSA -keysize 2048 -validity 365 -ext SAN=IP:127.0.0.1
+            echo password | keytool -exportcert -keystore /tmp/keystore.jks -rfc -file "${S3PROXY_CACERT_FILE}"
+        else
+            S3PROXY_CACERT_FILE=""
+        fi
+
+        "${STDBUF_BIN}" -oL -eL java -jar "${S3PROXY_BINARY}" --properties "${S3PROXY_CONFIG}" &
         S3PROXY_PID=$!
 
         # wait for S3Proxy to start
-        for i in $(seq 30);
-        do
-            if exec 3<>"/dev/tcp/127.0.0.1/8080";
-            then
-                exec 3<&-  # Close for read
-                exec 3>&-  # Close for write
-                break
-            fi
-            sleep 1
-        done
+        wait_for_port 8080
+    fi
+
+    if [ -n "${CHAOS_HTTP_PROXY}" ] || [ -n "${CHAOS_HTTP_PROXY_OPT}" ]; then
+        if [ ! -e "${CHAOS_HTTP_PROXY_BINARY}" ]; then
+            curl "https://github.com/bouncestorage/chaos-http-proxy/releases/download/chaos-http-proxy-${CHAOS_HTTP_PROXY_VERSION}/chaos-http-proxy" \
+                --fail --location --silent --output "${CHAOS_HTTP_PROXY_BINARY}"
+            chmod +x "${CHAOS_HTTP_PROXY_BINARY}"
+        fi
+
+        "${STDBUF_BIN}" -oL -eL java -jar "${CHAOS_HTTP_PROXY_BINARY}" --properties chaos-http-proxy.conf &
+        CHAOS_HTTP_PROXY_PID=$!
+
+        # wait for Chaos HTTP Proxy to start
+        wait_for_port 1080
     fi
 }
 
 function stop_s3proxy {
     if [ -n "${S3PROXY_PID}" ]
     then
-        kill $S3PROXY_PID
+        kill "${S3PROXY_PID}"
+    fi
+
+    if [ -n "${CHAOS_HTTP_PROXY_PID}" ]
+    then
+        kill "${CHAOS_HTTP_PROXY_PID}"
     fi
 }
 
@@ -139,9 +213,11 @@ function stop_s3proxy {
 function start_s3fs {
     # Public bucket if PUBLIC is set
     if [ -n "${PUBLIC}" ]; then
-        AUTH_OPT="-o public_bucket=1"
+        local AUTH_OPT="-o public_bucket=1"
+    elif [ -n "${S3FS_PROFILE}" ]; then
+        local AUTH_OPT="-o profile=${S3FS_PROFILE}"
     else
-        AUTH_OPT="-o passwd_file=${S3FS_CREDENTIALS_FILE}"
+        local AUTH_OPT="-o passwd_file=${S3FS_CREDENTIALS_FILE}"
     fi
 
     # If VALGRIND is set, pass it as options to valgrind.
@@ -153,10 +229,50 @@ function start_s3fs {
     fi
 
     # On OSX only, we need to specify the direct_io and auto_cache flag.
-    if [ `uname` = "Darwin" ]; then
-       DIRECT_IO_OPT="-o direct_io -o auto_cache"
+    #
+    # And Turn off creation and reference of spotlight index.
+    # (Leaving spotlight ON will result in a lot of wasted requests,
+    # which will affect test execution time)
+    #
+    if [ "$(uname)" = "Darwin" ]; then
+       local DIRECT_IO_OPT="-o direct_io -o auto_cache"
+
+       # disable spotlight
+       sudo mdutil -a -i off
     else
-       DIRECT_IO_OPT=""
+       local DIRECT_IO_OPT=""
+    fi
+
+    # Set environment variables or options for proxy.
+    # And the PROXY test is HTTP only and does not set CA certificates.
+    #
+    if [ -n "${CHAOS_HTTP_PROXY}" ]; then
+        export http_proxy="127.0.0.1:1080"
+        S3FS_HTTP_PROXY_OPT=""
+    elif [ -n "${CHAOS_HTTP_PROXY_OPT}" ]; then
+        S3FS_HTTP_PROXY_OPT="-o proxy=http://127.0.0.1:1080"
+    else
+        S3FS_HTTP_PROXY_OPT=""
+    fi
+
+    # [NOTE]
+    # For macos fuse-t, we need to specify the "noattrcache" option to
+    # disable NFS caching.
+    #
+    if [ "$(uname)" = "Darwin" ]; then
+        local FUSE_T_ATTRCACHE_OPT="-o noattrcache"
+    else
+        local FUSE_T_ATTRCACHE_OPT=""
+    fi
+
+    # [NOTE]
+    # On macOS we may get a VERIFY error for the self-signed certificate used by s3proxy.
+    # We can specify NO_CHECK_CERT=1 to avoid this.
+    #
+    if [ -n "${NO_CHECK_CERT}" ] && [ "${NO_CHECK_CERT}" -eq 1 ]; then
+        local NO_CHECK_CERT_OPT="-o no_check_certificate"
+    else
+        local NO_CHECK_CERT_OPT=""
     fi
 
     # Common s3fs options:
@@ -165,9 +281,6 @@ function start_s3fs {
     #
     # use_path_request_style
     #     The test env doesn't have virtual hosts
-    # createbucket
-    #     S3Proxy always starts with no buckets, this tests the s3fs-fuse
-    #     automatic bucket creation path.
     # $AUTH_OPT
     #     Will be either "-o public_bucket=1" 
     #                     or 
@@ -179,50 +292,60 @@ function start_s3fs {
     #
 
     # subshell with set -x to log exact invocation of s3fs-fuse
+    # shellcheck disable=SC2086
     (
         set -x 
-        stdbuf -oL -eL \
-            ${VALGRIND_EXEC} ${S3FS} \
-            $TEST_BUCKET_1 \
-            $TEST_BUCKET_MOUNT_POINT_1 \
+        CURL_CA_BUNDLE="${S3PROXY_CACERT_FILE}" \
+        ${STDBUF_BIN} -oL -eL \
+            ${VALGRIND_EXEC} \
+            ${S3FS} \
+            ${TEST_BUCKET_1} \
+            ${TEST_BUCKET_MOUNT_POINT_1} \
             -o use_path_request_style \
-            -o url=${S3_URL} \
-            -o no_check_certificate \
-            -o ssl_verify_hostname=0 \
+            -o url="${S3_URL}" \
+            -o endpoint="${S3_ENDPOINT}" \
             -o use_xattr=1 \
-            -o createbucket \
+            -o enable_unsigned_payload \
             ${AUTH_OPT} \
             ${DIRECT_IO_OPT} \
+            ${S3FS_HTTP_PROXY_OPT} \
+            ${NO_CHECK_CERT_OPT} \
+            ${FUSE_T_ATTRCACHE_OPT} \
             -o stat_cache_expire=1 \
             -o stat_cache_interval_expire=1 \
-            -o dbglevel=${DBGLEVEL:=info} \
+            -o dbglevel="${DBGLEVEL:=info}" \
+            -o no_time_stamp_msg \
             -o retries=3 \
             -f \
-            "${@}" | stdbuf -oL -eL sed $SED_BUFFER_FLAG "s/^/s3fs: /" &
-    )
+            "${@}" &
+        echo $! >&3
+    ) 3>pid | "${STDBUF_BIN}" -oL -eL "${SED_BIN}" "${SED_BUFFER_FLAG}" "s/^/s3fs: /" &
+    sleep 1
+    S3FS_PID=$(<pid)
+    export S3FS_PID
+    rm -f pid
 
-    if [ `uname` = "Darwin" ]; then
-         set +o errexit
-         TRYCOUNT=0
-         while [ $TRYCOUNT -le 20 ]; do
-             df | grep -q $TEST_BUCKET_MOUNT_POINT_1
-             if [ $? -eq 0 ]; then
+    if [ "$(uname)" = "Darwin" ]; then
+         local TRYCOUNT=0
+         while [ "${TRYCOUNT}" -le "${RETRIES:=20}" ]; do
+             _DF_RESULT=$(df 2>/dev/null)
+             if echo "${_DF_RESULT}" | grep -q "${TEST_BUCKET_MOUNT_POINT_1}"; then
                  break;
              fi
              sleep 1
-             TRYCOUNT=`expr ${TRYCOUNT} + 1`
+             TRYCOUNT=$((TRYCOUNT + 1))
          done
-         if [ $? -ne 0 ]; then
+         if [ "${TRYCOUNT}" -gt "${RETRIES}" ]; then
+             echo "Waited ${TRYCOUNT} seconds, but it could not be mounted."
              exit 1
          fi
-         set -o errexit
     else
-        retry 20 grep -q $TEST_BUCKET_MOUNT_POINT_1 /proc/mounts || exit 1
+        retry "${RETRIES:=20}" grep -q "${TEST_BUCKET_MOUNT_POINT_1}" /proc/mounts || exit 1
     fi
 
     # Quick way to start system up for manual testing with options under test
-    if [[ -n ${INTERACT} ]]; then
-        echo "Mountpoint $TEST_BUCKET_MOUNT_POINT_1  is ready"
+    if [[ -n "${INTERACT}" ]]; then
+        echo "Mountpoint ${TEST_BUCKET_MOUNT_POINT_1} is ready"
         echo "control-C to quit"
         sleep infinity
         exit 0
@@ -231,13 +354,13 @@ function start_s3fs {
 
 function stop_s3fs {
     # Retry in case file system is in use
-    if [ `uname` = "Darwin" ]; then
-        if df | grep -q $TEST_BUCKET_MOUNT_POINT_1; then
-            retry 10 df | grep -q $TEST_BUCKET_MOUNT_POINT_1 && umount $TEST_BUCKET_MOUNT_POINT_1
+    if [ "$(uname)" = "Darwin" ]; then
+        if df | grep -q "${TEST_BUCKET_MOUNT_POINT_1}"; then
+            retry 10 df "|" grep -q "${TEST_BUCKET_MOUNT_POINT_1}" "&&" umount "${TEST_BUCKET_MOUNT_POINT_1}"
         fi
     else
-        if grep -q $TEST_BUCKET_MOUNT_POINT_1 /proc/mounts; then 
-            retry 10 grep -q $TEST_BUCKET_MOUNT_POINT_1 /proc/mounts && fusermount -u $TEST_BUCKET_MOUNT_POINT_1
+        if grep -q "${TEST_BUCKET_MOUNT_POINT_1}" /proc/mounts; then 
+            retry 10 grep -q "${TEST_BUCKET_MOUNT_POINT_1}" /proc/mounts "&&" fusermount -u "${TEST_BUCKET_MOUNT_POINT_1}"
         fi
     fi
 }
@@ -248,3 +371,12 @@ function common_exit_handler {
     stop_s3proxy
 }
 trap common_exit_handler EXIT
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

test/junk_data.cc

@@ -0,0 +1,50 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2021 Andrew Gaul <andrew@gaul.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+// Generate junk data at high speed.  An alternative to dd if=/dev/urandom.
+
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+
+int main(int argc, const char *argv[])
+{
+    if (argc != 2) {
+        return 1;
+    }
+    uint64_t count = strtoull(argv[1], nullptr, 10);
+    char buf[128 * 1024];
+    for (uint64_t i = 0; i < count; i += sizeof(buf)) {
+        for (uint64_t j = 0; j < sizeof(buf) / sizeof(i); ++j) {
+            *(reinterpret_cast<uint64_t *>(buf) + j) = i / sizeof(i) + j;
+        }
+        fwrite(buf, 1, sizeof(buf) > count - i ? count - i : sizeof(buf), stdout);
+    }
+    return 0;
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

test/mergedir.sh

@@ -1,4 +1,24 @@
 #!/bin/sh
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
 #
 # Merge old directory object to new.
 # For s3fs after v1.64
@@ -20,25 +40,25 @@ UsageFunction()
 }
 
 ### Check parameters
-WHOAMI=`whoami`
-OWNNAME=`basename $0`
+WHOAMI=$(whoami)
+OWNNAME=$(basename "$0")
 AUTOYES="no"
 ALLYES="no"
 DIRPARAM=""
 
 while [ "$1" != "" ]; do
-    if [ "X$1" = "X-help" -o "X$1" = "X-h" -o "X$1" = "X-H" ]; then
-        UsageFunction $OWNNAME
+    if [ "X$1" = "X-help" ] || [ "X$1" = "X-h" ] || [ "X$1" = "X-H" ]; then
+        UsageFunction "${OWNNAME}"
         exit 0
-    elif [ "X$1" = "X-y" -o "X$1" = "X-Y" ]; then
+    elif [ "X$1" = "X-y" ] || [ "X$1" = "X-Y" ]; then
         AUTOYES="yes"
-    elif [ "X$1" = "X-all" -o "X$1" = "X-ALL" ]; then
+    elif [ "X$1" = "X-all" ] || [ "X$1" = "X-ALL" ]; then
         ALLYES="yes"
     else
         if [ "X$DIRPARAM" != "X" ]; then
             echo "*** Input error."
             echo ""
-            UsageFunction $OWNNAME
+            UsageFunction "${OWNNAME}"
             exit 1
         fi
         DIRPARAM=$1
@@ -48,7 +68,7 @@ done
 if [ "X$DIRPARAM" = "X" ]; then
     echo "*** Input error."
     echo ""
-    UsageFunction $OWNNAME
+    UsageFunction "${OWNNAME}"
     exit 1
 fi
 
@@ -68,18 +88,17 @@ echo "Please execute this program by responsibility of your own."
 echo "#############################################################################"
 echo ""
 
-DATE=`date +'%Y%m%d-%H%M%S'`
-LOGFILE="$OWNNAME-$DATE.log"
+DATE=$(date +'%Y%m%d-%H%M%S')
+LOGFILE="${OWNNAME}-${DATE}.log"
 
-echo -n "Start to merge directory object... [$DIRPARAM]"
-echo "# Start to merge directory object... [$DIRPARAM]" >> $LOGFILE
-echo -n "# DATE :        " >> $LOGFILE
-echo `date` >> $LOGFILE
-echo -n "# BASEDIR :     " >> $LOGFILE
-echo `pwd` >> $LOGFILE
-echo -n "# TARGET PATH : " >> $LOGFILE
-echo $DIRPARAM >> $LOGFILE
-echo  "" >> $LOGFILE
+echo "Start to merge directory object... [${DIRPARAM}]"
+{
+	echo "# Start to merge directory object... [${DIRPARAM}]"
+	echo "# DATE :        $(date)"
+	echo "# BASEDIR :     $(pwd)"
+	echo "# TARGET PATH : ${DIRPARAM}"
+	echo  ""
+} > "${LOGFILE}"
 
 if [ "$AUTOYES" = "yes" ]; then
     echo "(no confirmation)"
@@ -89,81 +108,90 @@ fi
 echo ""
 
 ### Get Directory list
-DIRLIST=`find $DIRPARAM -type d -print | grep -v ^\.$`
+DIRLIST=$(find "${DIRPARAM}" -type d -print | grep -v ^\.$)
 
 #
 # Main loop
 #
 for DIR in $DIRLIST; do
     ### Skip "." and ".." directories
-    BASENAME=`basename $DIR`
-    if [ "$BASENAME" = "." -o "$BASENAME" = ".." ]; then
+    BASENAME=$(basename "${DIR}")
+    if [ "${BASENAME}" = "." ] || [ "${BASENAME}" = ".." ]; then
         continue
     fi
 
-    if [ "$ALLYES" = "no" ]; then
+    if [ "${ALLYES}" = "no" ]; then
         ### Skip "d---------" directories.
         ### Other clients make directory object "dir/" which don't have
         ### "x-amz-meta-mode" attribute.
         ### Then these directories is "d---------", it is target directory.
-        DIRPERMIT=`ls -ld --time-style=+'%Y%m%d%H%M' $DIR | awk '{print $1}'`
-        if [ "$DIRPERMIT" != "d---------" ]; then
+
+        # shellcheck disable=SC2012
+        DIRPERMIT=$(ls -ld --time-style=+'%Y%m%d%H%M' "${DIR}" | awk '{print $1}')
+        if [ "${DIRPERMIT}" != "d---------" ]; then
             continue
         fi
     fi
 
     ### Confirm
     ANSWER=""
-    if [ "$AUTOYES" = "yes" ]; then
+    if [ "${AUTOYES}" = "yes" ]; then
         ANSWER="y"
     fi
-    while [ "X$ANSWER" != "XY" -a "X$ANSWER" != "Xy" -a "X$ANSWER" != "XN" -a "X$ANSWER" != "Xn" ]; do
-        echo -n "Do you merge $DIR? (y/n): "
-        read ANSWER
+    while [ "X${ANSWER}" != "XY" ] && [ "X${ANSWER}" != "Xy" ] && [ "X${ANSWER}" != "XN" ] && [ "X${ANSWER}" != "Xn" ]; do
+        printf "%s" "Do you merge ${DIR} ? (y/n): "
+        read -r ANSWER
     done
-    if [ "X$ANSWER" != "XY" -a "X$ANSWER" != "Xy" ]; then
+    if [ "X${ANSWER}" != "XY" ] && [ "X${ANSWER}" != "Xy" ]; then
         continue
     fi
 
     ### Do
-    CHOWN=`ls -ld --time-style=+'%Y%m%d%H%M' $DIR | awk '{print $3":"$4" "$7}'`
-    CHMOD=`ls -ld --time-style=+'%Y%m%d%H%M' $DIR | awk '{print $7}'`
-    TOUCH=`ls -ld --time-style=+'%Y%m%d%H%M' $DIR | awk '{print $6" "$7}'`
+    # shellcheck disable=SC2012
+    CHOWN=$(ls -ld --time-style=+'%Y%m%d%H%M' "${DIR}" | awk '{print $3":"$4" "$7}')
+    # shellcheck disable=SC2012
+    CHMOD=$(ls -ld --time-style=+'%Y%m%d%H%M' "${DIR}" | awk '{print $7}')
+    # shellcheck disable=SC2012
+    TOUCH=$(ls -ld --time-style=+'%Y%m%d%H%M' "${DIR}" | awk '{print $6" "$7}')
 
-    echo -n "*** Merge $DIR :	"
-    echo -n "	$DIR :		" >> $LOGFILE
+    printf "%s" "*** Merge ${DIR} :	"
+    printf "%s" "	${DIR} :		" >> "${LOGFILE}"
 
-    chmod 755 $CHMOD > /dev/null 2>&1
+    chmod 755 "${CHMOD}" > /dev/null 2>&1
     RESULT=$?
-    if [ $RESULT -ne 0 ]; then
+    if [ "${RESULT}" -ne 0 ]; then
         echo "Failed(chmod)"
-        echo "Failed(chmod)" >> $LOGFILE
+        echo "Failed(chmod)" >> "${LOGFILE}"
         continue
     fi
-    chown $CHOWN > /dev/null 2>&1
+    chown "${CHOWN}" > /dev/null 2>&1
     RESULT=$?
-    if [ $RESULT -ne 0 ]; then
+    if [ "${RESULT}" -ne 0 ]; then
         echo "Failed(chown)"
-        echo "Failed(chown)" >> $LOGFILE
+        echo "Failed(chown)" >> "${LOGFILE}"
         continue
     fi
-    touch -t $TOUCH > /dev/null 2>&1
+    touch -t "${TOUCH}" > /dev/null 2>&1
     RESULT=$?
-    if [ $RESULT -ne 0 ]; then
+    if [ "${RESULT}" -ne 0 ]; then
         echo "Failed(touch)"
-        echo "Failed(touch)" >> $LOGFILE
+        echo "Failed(touch)" >> "${LOGFILE}"
         continue
     fi
     echo "Succeed"
-    echo "Succeed" >> $LOGFILE
+    echo "Succeed" >> "${LOGFILE}"
 done
 
 echo ""
-echo "" >> $LOGFILE
+echo "" >> "${LOGFILE}"
 echo "Finished."
-echo -n "# Finished : " >> $LOGFILE
-echo `date` >> $LOGFILE
+echo "# Finished : $(date)" >> "${LOGFILE}"
 
 #
-# END
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
 #

test/mknod_test.cc

@@ -0,0 +1,184 @@
+/*
+ * s3fs - FUSE-based file system backed by Amazon S3
+ *
+ * Copyright(C) 2021 Andrew Gaul <andrew@gaul.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+#include <cerrno>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#if !defined(__APPLE__) && !defined(__FreeBSD__)
+#include <sys/sysmacros.h>
+#endif
+
+//---------------------------------------------------------
+// Const
+//---------------------------------------------------------
+static constexpr char usage_string[]  = "Usage : \"mknod_test <base file path>\"";
+
+static constexpr char str_mode_reg[]  = "REGULAR";
+static constexpr char str_mode_chr[]  = "CHARACTER";
+static constexpr char str_mode_blk[]  = "BLOCK";
+static constexpr char str_mode_fifo[] = "FIFO";
+static constexpr char str_mode_sock[] = "SOCK";
+
+static constexpr char str_ext_reg[]   = "reg";
+static constexpr char str_ext_chr[]   = "chr";
+static constexpr char str_ext_blk[]   = "blk";
+static constexpr char str_ext_fifo[]  = "fifo";
+static constexpr char str_ext_sock[]  = "sock";
+
+// [NOTE]
+// It would be nice if PATH_MAX could be used as is, but since there are
+// issues using on Linux and we also must support for macos, this simple
+// test program defines a fixed value for simplicity.
+//
+static constexpr size_t S3FS_TEST_PATH_MAX = 255;
+static constexpr size_t MAX_BASE_PATH_LENGTH = S3FS_TEST_PATH_MAX - 5;
+
+//---------------------------------------------------------
+// Test function
+//---------------------------------------------------------
+bool TestMknod(const char* basepath, mode_t mode)
+{
+    if(!basepath){
+        fprintf(stderr, "[ERROR] Called function with wrong basepath argument.\n");
+        return false;
+    }
+
+    const char* str_mode;
+    dev_t       dev;
+    char        filepath[S3FS_TEST_PATH_MAX];
+    switch(mode){
+        case S_IFREG:
+            str_mode = str_mode_reg;
+            dev      = 0;
+            snprintf(filepath, sizeof(filepath), "%s.%s", basepath, str_ext_reg);
+            filepath[S3FS_TEST_PATH_MAX - 1] = '\0';    // for safety
+            break;
+        case S_IFCHR:
+            str_mode = str_mode_chr;
+            dev      = makedev(0, 0);
+            snprintf(filepath, sizeof(filepath), "%s.%s", basepath, str_ext_chr);
+            filepath[S3FS_TEST_PATH_MAX - 1] = '\0';    // for safety
+            break;
+        case S_IFBLK:
+            str_mode = str_mode_blk;
+            dev      = makedev((unsigned int)(259), 0); // temporary value
+            snprintf(filepath, sizeof(filepath), "%s.%s", basepath, str_ext_blk);
+            filepath[S3FS_TEST_PATH_MAX - 1] = '\0';    // for safety
+            break;
+        case S_IFIFO:
+            str_mode = str_mode_fifo;
+            dev      = 0;
+            snprintf(filepath, sizeof(filepath), "%s.%s", basepath, str_ext_fifo);
+            filepath[S3FS_TEST_PATH_MAX - 1] = '\0';    // for safety
+            break;
+        case S_IFSOCK:
+            str_mode = str_mode_sock;
+            dev      = 0;
+            snprintf(filepath, sizeof(filepath), "%s.%s", basepath, str_ext_sock);
+            filepath[S3FS_TEST_PATH_MAX - 1] = '\0';    // for safety
+            break;
+        default:
+            fprintf(stderr, "[ERROR] Called function with wrong mode argument.\n");
+            return false;
+    }
+
+    //
+    // Create
+    //
+    if(0 != mknod(filepath, mode | S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH, dev)){
+        fprintf(stderr, "[ERROR] Could not create %s file(%s) : errno = %d\n", str_mode, filepath, errno);
+        return false;
+    }
+
+    //
+    // Check
+    //
+    struct stat st;
+    if(0 != stat(filepath, &st)){
+        fprintf(stderr, "[ERROR] Could not get stat from %s file(%s) : errno = %d\n", str_mode, filepath, errno);
+        return false;
+    }
+    if(mode != (st.st_mode & S_IFMT)){
+        fprintf(stderr, "[ERROR] Created %s file(%s) does not have 0%o stat\n", str_mode, filepath, mode);
+        return false;
+    }
+
+    //
+    // Remove
+    //
+    if(0 != unlink(filepath)){
+        fprintf(stderr, "[WARNING] Could not remove %s file(%s) : errno = %d\n", str_mode, filepath, mode);
+    }
+    return true;
+}
+
+//---------------------------------------------------------
+// Main
+//---------------------------------------------------------
+int main(int argc, const char *argv[])
+{
+    // Parse parameters
+    if(2 != argc){
+        fprintf(stderr, "[ERROR] No parameter is specified.\n");
+        fprintf(stderr, "%s\n", usage_string);
+        exit(EXIT_FAILURE);
+    }
+    if(0 == strcmp("-h", argv[1]) || 0 == strcmp("--help", argv[1])){
+        fprintf(stdout, "%s\n", usage_string);
+        exit(EXIT_SUCCESS);
+    }
+    if(MAX_BASE_PATH_LENGTH < strlen(argv[1])){
+        fprintf(stderr, "[ERROR] Base file path is too long, it must be less than %zu\n", MAX_BASE_PATH_LENGTH);
+        exit(EXIT_FAILURE);
+    }
+
+    // Test
+    //
+    // [NOTE]
+    // Privilege is required to execute S_IFBLK.
+    //
+    if(0 != geteuid()){
+        fprintf(stderr, "[WARNING] Skipping mknod(S_IFBLK) due to missing root privileges.\n");
+    }
+    if(!TestMknod(argv[1], S_IFREG)  ||
+       !TestMknod(argv[1], S_IFCHR)  ||
+       !TestMknod(argv[1], S_IFIFO)  ||
+       !TestMknod(argv[1], S_IFSOCK) ||
+       (0 == geteuid() && !TestMknod(argv[1], S_IFBLK)))
+    {
+        exit(EXIT_FAILURE);
+    }
+
+    exit(EXIT_SUCCESS);
+}
+
+/*
+* Local variables:
+* tab-width: 4
+* c-basic-offset: 4
+* End:
+* vim600: expandtab sw=4 ts=4 fdm=marker
+* vim<600: expandtab sw=4 ts=4
+*/

test/require-root.sh

@@ -1,7 +0,0 @@
-#!/bin/bash -e
-
-if [[ $EUID -ne 0 ]]
-then
-	echo "This test script must be run as root" 1>&2
-	exit 1
-fi

test/run_tests_using_sanitizers.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+# Disable preprocessor warnings from _FORTIFY_SOURCE and -O0
+COMMON_FLAGS="-g -O0 -Wno-cpp"
+
+# run tests with libstc++ debug mode, https://gcc.gnu.org/onlinedocs/libstdc++/manual/debug_mode.html
+make clean
+./configure CXXFLAGS="$COMMON_FLAGS -D_GLIBCXX_DEBUG"
+make --jobs="$(nproc)"
+ALL_TESTS=1 make check -C test/
+
+# run tests under AddressSanitizer, https://clang.llvm.org/docs/AddressSanitizer.html
+make clean
+./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=address -fsanitize-address-use-after-scope"
+make --jobs="$(nproc)"
+ALL_TESTS=1 ASAN_OPTIONS='detect_leaks=1,detect_stack_use_after_return=1' make check -C test/
+
+# run tests under MemorySanitizer, https://clang.llvm.org/docs/MemorySanitizer.html
+# TODO: this requires a custom libc++
+#make clean
+#./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=memory"
+#make --jobs="$(nproc)"
+#ALL_TESTS=1 make check -C test/
+
+# run tests under ThreadSanitizer, https://clang.llvm.org/docs/ThreadSanitizer.html
+make clean
+./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=thread"
+make --jobs="$(nproc)"
+ALL_TESTS=1 TSAN_OPTIONS='halt_on_error=1,suppressions=threadsanitizer_suppressions.txt' make check -C test/
+
+# run tests under UndefinedBehaviorSanitizer, https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html
+make clean
+./configure CXX=clang++ CXXFLAGS="$COMMON_FLAGS -fsanitize=undefined,implicit-conversion,local-bounds,unsigned-integer-overflow"
+make --jobs="$(nproc)"
+ALL_TESTS=1 make check -C test/
+
+# run tests with Valgrind
+make clean
+./configure CXXFLAGS="$COMMON_FLAGS"
+make --jobs="$(nproc)"
+ALL_TESTS=1 RETRIES=100 VALGRIND="--leak-check=full --error-exitcode=1" S3_URL=http://127.0.0.1:8081 make check -C test/
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

test/s3proxy.conf

@@ -1,8 +1,9 @@
+s3proxy.endpoint=http://127.0.0.1:8081
 s3proxy.secure-endpoint=https://127.0.0.1:8080
 s3proxy.authorization=aws-v2-or-v4
 s3proxy.identity=local-identity
 s3proxy.credential=local-credential
-s3proxy.keystore-path=keystore.jks
+s3proxy.keystore-path=/tmp/keystore.jks
 s3proxy.keystore-password=password
 
 jclouds.provider=transient

test/s3proxy_http.conf

@@ -0,0 +1,8 @@
+s3proxy.endpoint=http://127.0.0.1:8080
+s3proxy.authorization=aws-v2-or-v4
+s3proxy.identity=local-identity
+s3proxy.credential=local-credential
+
+jclouds.provider=transient
+jclouds.identity=remote-identity
+jclouds.credential=remote-credential

test/sample_delcache.sh

@@ -1,6 +1,26 @@
 #!/bin/sh
 #
-# This is unsupport sample deleting cache files script.
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+
+#
+# This is unsupported sample deleting cache files script.
 # So s3fs's local cache files(stats and objects) grow up,
 # you need to delete these.
 # This script deletes these files with total size limit
@@ -12,49 +32,49 @@
 
 func_usage()
 {
-  echo ""
-  echo "Usage:  $1 <bucket name> <cache path> <limit size> [-silent]"
-  echo "        $1 -h"
-  echo "Sample: $1 mybucket /tmp/s3fs/cache 1073741824"
-  echo ""
-  echo "  bucket name = bucket name which specified s3fs option"
-  echo "  cache path  = cache directory path which specified by"
-  echo "                use_cache s3fs option."
-  echo "  limit size  = limit for total cache files size."
-  echo "                specify by BYTE"
-  echo "  -silent     = silent mode"
-  echo ""
+    echo ""
+    echo "Usage:  $1 <bucket name> <cache path> <limit size> [-silent]"
+    echo "        $1 -h"
+    echo "Sample: $1 mybucket /tmp/s3fs/cache 1073741824"
+    echo ""
+    echo "  bucket name = bucket name which specified s3fs option"
+    echo "  cache path  = cache directory path which specified by"
+    echo "                use_cache s3fs option."
+    echo "  limit size  = limit for total cache files size."
+    echo "                specify by BYTE"
+    echo "  -silent     = silent mode"
+    echo ""
 }
 
-PRGNAME=`basename $0`
+PRGNAME=$(basename "$0")
 
-if [ "X$1" = "X-h" -o "X$1" = "X-H" ]; then
-  func_usage $PRGNAME
-  exit 0
+if [ "X$1" = "X-h" ] || [ "X$1" = "X-H" ]; then
+    func_usage "${PRGNAME}"
+    exit 0
 fi
-if [ "X$1" = "X" -o "X$2" = "X" -o "X$3" = "X" ]; then
-  func_usage $PRGNAME
-  exit 1
+if [ "X$1" = "X" ] || [ "X$2" = "X" ] || [ "X$3" = "X" ]; then
+    func_usage "${PRGNAME}"
+    exit 1
 fi
 
-BUCKET=$1
+BUCKET="$1"
 CDIR="$2"
-LIMIT=$3
+LIMIT="$3"
 SILENT=0
 if [ "X$4" = "X-silent" ]; then
-  SILENT=1
+    SILENT=1
 fi
 FILES_CDIR="${CDIR}/${BUCKET}"
 STATS_CDIR="${CDIR}/.${BUCKET}.stat"
-CURRENT_CACHE_SIZE=`du -sb "$FILES_CDIR" | awk '{print $1}'`
+CURRENT_CACHE_SIZE=$(du -sb "${FILES_CDIR}" | awk '{print $1}')
 #
 # Check total size
 #
-if [ $LIMIT -ge $CURRENT_CACHE_SIZE ]; then
-  if [ $SILENT -ne 1 ]; then
-    echo "$FILES_CDIR ($CURRENT_CACHE_SIZE) is below allowed $LIMIT"
-  fi
-  exit 0
+if [ "${LIMIT}" -ge "${CURRENT_CACHE_SIZE}" ]; then
+    if [ $SILENT -ne 1 ]; then
+        echo "${FILES_CDIR} (${CURRENT_CACHE_SIZE}) is below allowed ${LIMIT}"
+    fi
+    exit 0
 fi
 
 #
@@ -66,41 +86,45 @@ TMP_CFILE=""
 #
 # Make file list by sorted access time
 #
-find "$STATS_CDIR" -type f -exec stat -c "%X:%n" "{}" \; | sort | while read part
+find "${STATS_CDIR}" -type f -exec stat -c "%X:%n" "{}" \; | sort | while read -r part
 do
-  echo Looking at $part
-  TMP_ATIME=`echo "$part" | cut -d: -f1`
-  TMP_STATS="`echo "$part" | cut -d: -f2`"
-  TMP_CFILE=`echo "$TMP_STATS" | sed s/\.$BUCKET\.stat/$BUCKET/`
-  
-  if [ `stat -c %X "$TMP_STATS"` -eq $TMP_ATIME ]; then
-    rm -f "$TMP_STATS" "$TMP_CFILE" > /dev/null 2>&1
-    if [ $? -ne 0 ]; then
-      if [ $SILENT -ne 1 ]; then
-        echo "ERROR: Could not remove files($TMP_STATS,$TMP_CFILE)"
-      fi
-      exit 1
-    else
-      if [ $SILENT -ne 1 ]; then
-        echo "remove file: $TMP_CFILE	$TMP_STATS"
-      fi
+    echo "Looking at ${part}"
+    TMP_ATIME=$(echo "${part}" | cut -d: -f1)
+    TMP_STATS=$(echo "${part}" | cut -d: -f2-)
+    TMP_CFILE=$(echo "${TMP_STATS}" | sed -e "s/\\.${BUCKET}\\.stat/${BUCKET}/")
+
+    if [ "$(stat -c %X "${TMP_STATS}")" -eq "${TMP_ATIME}" ]; then
+        if ! rm "${TMP_STATS}" "${TMP_CFILE}" > /dev/null 2>&1; then
+            if [ "${SILENT}" -ne 1 ]; then
+                echo "ERROR: Could not remove files(${TMP_STATS},${TMP_CFILE})"
+            fi
+            exit 1
+        else
+            if [ "${SILENT}" -ne 1 ]; then
+                echo "remove file: ${TMP_CFILE}	${TMP_STATS}"
+            fi
+        fi
     fi
-  fi
-  if [ $LIMIT -ge `du -sb "$FILES_CDIR" | awk '{print $1}'` ]; then
-    if [ $SILENT -ne 1 ]; then
-      echo "finish removing files"
+    if [ "${LIMIT}" -ge "$(du -sb "${FILES_CDIR}" | awk '{print $1}')" ]; then
+        if [ "${SILENT}" -ne 1 ]; then
+            echo "finish removing files"
+        fi
+        break
     fi
-    break
-  fi
 done
 
-if [ $SILENT -ne 1 ]; then
-  TOTAL_SIZE=`du -sb "$FILES_CDIR" | awk '{print $1}'`
-  echo "Finish: $FILES_CDIR total size is $TOTAL_SIZE"
+if [ "${SILENT}" -ne 1 ]; then
+    TOTAL_SIZE=$(du -sb "${FILES_CDIR}" | awk '{print $1}')
+    echo "Finish: ${FILES_CDIR} total size is ${TOTAL_SIZE}"
 fi
 
 exit 0
 
 #
-# End
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
 #

test/small-integration-test.sh

@@ -1,4 +1,23 @@
 #!/bin/bash
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
 
 #
 # Test s3fs-fuse file system operations with
@@ -7,52 +26,58 @@
 set -o errexit
 set -o pipefail
 
-# Require root
-REQUIRE_ROOT=require-root.sh
-#source $REQUIRE_ROOT
-
 source integration-test-common.sh
 
 CACHE_DIR="/tmp/s3fs-cache"
 rm -rf "${CACHE_DIR}"
 mkdir "${CACHE_DIR}"
 
-#reserve 200MB for data cache
 source test-utils.sh
-CACHE_DISK_AVAIL_SIZE=`get_disk_avail_size $CACHE_DIR`
-if [ `uname` = "Darwin" ]; then
-    # [FIXME]
-    # Only on MacOS, there are cases where process or system
-    # other than the s3fs cache uses disk space.
-    # We can imagine that this is caused by Timemachine, but
-    # there is no workaround, so s3fs cache size is set +1gb
-    # for error bypass.
-    #
-    ENSURE_DISKFREE_SIZE=$((CACHE_DISK_AVAIL_SIZE - 1200))
-else
-    ENSURE_DISKFREE_SIZE=$((CACHE_DISK_AVAIL_SIZE - 200))
-fi
+
+#reserve 200MB for data cache
+FAKE_FREE_DISK_SIZE=200
+ENSURE_DISKFREE_SIZE=10
+
+# set up client-side encryption keys
+head -c 32 < /dev/urandom > /tmp/ssekey.bin
+base64 < /tmp/ssekey.bin > /tmp/ssekey
+openssl md5 -binary < /tmp/ssekey.bin | base64 > /tmp/ssekeymd5
+chmod 600 /tmp/ssekey /tmp/ssekey.bin /tmp/ssekeymd5
 
 export CACHE_DIR
 export ENSURE_DISKFREE_SIZE 
-FLAGS=(
-    "use_cache=${CACHE_DIR} -o ensure_diskfree=${ENSURE_DISKFREE_SIZE}"
-    enable_content_md5
-    enable_noobj_cache
-    nocopyapi
-    nomultipart
-    notsup_compat_dir
-    sigv2
-    singlepart_copy_limit=$((10 * 1024))  # limit size to exercise multipart code paths
-    #use_sse  # TODO: S3Proxy does not support SSE
-)
+if [ -n "${ALL_TESTS}" ]; then
+    FLAGS=(
+        "use_cache=${CACHE_DIR} -o ensure_diskfree=${ENSURE_DISKFREE_SIZE} -o fake_diskfree=${FAKE_FREE_DISK_SIZE} -o use_xattr -o update_parent_dir_stat"
+        enable_content_md5
+        disable_noobj_cache
+        "max_stat_cache_size=100"
+        nocopyapi
+        nomultipart
+        sigv2
+        sigv4
+        "singlepart_copy_limit=10"  # limit size to exercise multipart code paths
+        #use_sse  # TODO: S3Proxy does not support SSE
+        #use_sse=custom:/tmp/ssekey  # TODO: S3Proxy does not support SSE
+        "use_cache=${CACHE_DIR} -o ensure_diskfree=${ENSURE_DISKFREE_SIZE} -o fake_diskfree=${FAKE_FREE_DISK_SIZE} -o streamupload"
+    )
+else
+    FLAGS=(
+        sigv4
+    )
+fi
 
 start_s3proxy
 
-for flag in "${FLAGS[@]}"; do
-    echo "testing s3fs flag: $flag"
+if ! aws_cli s3api head-bucket --bucket "${TEST_BUCKET_1}" --region "${S3_ENDPOINT}"; then
+    aws_cli s3 mb "s3://${TEST_BUCKET_1}" --region "${S3_ENDPOINT}"
+fi
 
-    start_s3fs -o $flag
+for flag in "${FLAGS[@]}"; do
+    echo "testing s3fs flag: ${flag}"
+
+    # shellcheck disable=SC2086
+    start_s3fs -o ${flag}
 
     ./integration-test-main.sh
 
@@ -62,3 +87,12 @@ done
 stop_s3proxy
 
 echo "$0: tests complete."
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#

test/test-utils.sh

@@ -1,28 +1,88 @@
 #!/bin/bash
+#
+# s3fs - FUSE-based file system backed by Amazon S3
+#
+# Copyright 2007-2008 Randy Rizun <rrizun@gmail.com>
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
 
 #### Test utils
 
 set -o errexit
 set -o pipefail
 
+#
 # Configuration
+#
 TEST_TEXT="HELLO WORLD"
 TEST_TEXT_FILE=test-s3fs.txt
 TEST_DIR=testdir
+# shellcheck disable=SC2034
 ALT_TEST_TEXT_FILE=test-s3fs-ALT.txt
+# shellcheck disable=SC2034
 TEST_TEXT_FILE_LENGTH=15
+# shellcheck disable=SC2034
 BIG_FILE=big-file-s3fs.txt
-BIG_FILE_LENGTH=$((25 * 1024 * 1024))
+# shellcheck disable=SC2034
+TEMP_DIR="${TMPDIR:-"/var/tmp"}"
+
+# /dev/urandom can only return 32 MB per block maximum
+BIG_FILE_BLOCK_SIZE=$((25 * 1024 * 1024))
+BIG_FILE_COUNT=1
+
+# This should be greater than the multipart size
+# shellcheck disable=SC2034
+BIG_FILE_LENGTH=$((BIG_FILE_BLOCK_SIZE * BIG_FILE_COUNT))
+
+# Set locale because some tests check for English expressions
+export LC_ALL=en_US.UTF-8
 export RUN_DIR
 
-if [ `uname` = "Darwin" ]; then
-    export SED_BUFFER_FLAG="-l"
+# [NOTE]
+# stdbuf, truncate and sed installed on macos do not work as
+# expected(not compatible with Linux).
+# Therefore, macos installs a brew package such as coreutils
+# and uses gnu commands(gstdbuf, gtruncate, gsed).
+# Set your PATH appropriately so that you can find these commands.
+#
+if [ "$(uname)" = "Darwin" ]; then
+    export STDBUF_BIN="gstdbuf"
+    export TRUNCATE_BIN="gtruncate"
+    export SED_BIN="gsed"
+    export BASE64_BIN="gbase64"
 else
-    export SED_BUFFER_FLAG="--unbuffered"
+    export STDBUF_BIN="stdbuf"
+    export TRUNCATE_BIN="truncate"
+    export SED_BIN="sed"
+    export BASE64_BIN="base64"
+fi
+export SED_BUFFER_FLAG="--unbuffered"
+
+# [NOTE]
+# Specifying cache disable option depending on stat(coreutils) version
+# TODO: investigate why this is necessary #2327
+#
+if stat --cached=never / >/dev/null 2>&1; then
+    STAT_BIN=(stat --cache=never)
+else
+    STAT_BIN=(stat)
 fi
 
 function get_xattr() {
-    if [ `uname` = "Darwin" ]; then
+    if [ "$(uname)" = "Darwin" ]; then
         xattr -p "$1" "$2"
     else
         getfattr -n "$1" --only-values "$2"
@@ -30,7 +90,7 @@ function get_xattr() {
 }
 
 function set_xattr() {
-    if [ `uname` = "Darwin" ]; then
+    if [ "$(uname)" = "Darwin" ]; then
         xattr -w "$1" "$2" "$3"
     else
         setfattr -n "$1" -v "$2" "$3"
@@ -38,80 +98,75 @@ function set_xattr() {
 }
 
 function del_xattr() {
-    if [ `uname` = "Darwin" ]; then
+    if [ "$(uname)" = "Darwin" ]; then
         xattr -d "$1" "$2"
     else
         setfattr -x "$1" "$2"
     fi
 }
 
-function get_size() {
-    if [ `uname` = "Darwin" ]; then
-        stat -f "%z" "$1"
+function get_inode() {
+    if [ "$(uname)" = "Darwin" ]; then
+        "${STAT_BIN[@]}" -f "%i" "$1"
     else
-        stat -c %s "$1"
+        "${STAT_BIN[@]}" --format "%i" "$1"
+    fi
+}
+
+function get_size() {
+    if [ "$(uname)" = "Darwin" ]; then
+        "${STAT_BIN[@]}" -f "%z" "$1"
+    else
+        "${STAT_BIN[@]}" --format "%s" "$1"
     fi
 }
 
 function check_file_size() {
-    FILE_NAME="$1"
-    EXPECTED_SIZE="$2"
+    local FILE_NAME="$1"
+    local EXPECTED_SIZE="$2"
 
-    # Verify file is zero length via metadata
-    size=$(get_size ${FILE_NAME})
-    if [ $size -ne $EXPECTED_SIZE ]
+    # Verify file length via metadata
+    local size
+    size=$(get_size "${FILE_NAME}")
+    if [ "${size}" -ne "${EXPECTED_SIZE}" ]
     then
-        echo "error: expected ${FILE_NAME} to be zero length"
+        echo "error: expected ${FILE_NAME} to be ${EXPECTED_SIZE} length but was ${size} via metadata"
         return 1
     fi
 
-    # Verify file is zero length via data
-    size=$(cat ${FILE_NAME} | wc -c)
-    if [ $size -ne $EXPECTED_SIZE ]
+    # Verify file length via data
+    # shellcheck disable=SC2002
+    size=$(cat "${FILE_NAME}" | wc -c)
+    if [ "${size}" -ne "${EXPECTED_SIZE}" ]
     then
-        echo "error: expected ${FILE_NAME} to be $EXPECTED_SIZE length, got $size"
+        echo "error: expected ${FILE_NAME} to be ${EXPECTED_SIZE} length, got ${size} via data"
         return 1
     fi
 }
 
 function mk_test_file {
-    if [ $# == 0 ]; then
-        TEXT=$TEST_TEXT
+    if [ $# = 0 ]; then
+        local TEXT="${TEST_TEXT}"
     else
-        TEXT=$1
+        local TEXT="$1"
     fi
-    echo $TEXT > $TEST_TEXT_FILE
-    if [ ! -e $TEST_TEXT_FILE ]
+    echo "${TEXT}" > "${TEST_TEXT_FILE}"
+    if [ ! -e "${TEST_TEXT_FILE}" ]
     then
         echo "Could not create file ${TEST_TEXT_FILE}, it does not exist"
         exit 1
     fi
-
-    # wait & check
-    BASE_TEXT_LENGTH=`echo $TEXT | wc -c | awk '{print $1}'`
-    TRY_COUNT=10
-    while true; do
-        MK_TEXT_LENGTH=`wc -c $TEST_TEXT_FILE | awk '{print $1}'`
-        if [ $BASE_TEXT_LENGTH -eq $MK_TEXT_LENGTH ]; then
-            break
-        fi
-        TRY_COUNT=`expr $TRY_COUNT - 1`
-        if [ $TRY_COUNT -le 0 ]; then
-            echo "Could not create file ${TEST_TEXT_FILE}, that file size is something wrong"
-        fi
-        sleep 1
-    done
 }
 
 function rm_test_file {
-    if [ $# == 0 ]; then
-        FILE=$TEST_TEXT_FILE
+    if [ $# = 0 ]; then
+        local FILE="${TEST_TEXT_FILE}"
     else
-        FILE=$1
+        local FILE="$1"
     fi
-    rm -f $FILE
+    rm -f "${FILE}"
 
-    if [ -e $FILE ]
+    if [ -e "${FILE}" ]
     then
         echo "Could not cleanup file ${TEST_TEXT_FILE}"
         exit 1
@@ -119,17 +174,17 @@ function rm_test_file {
 }
 
 function mk_test_dir {
-    mkdir ${TEST_DIR}
+    mkdir "${TEST_DIR}"
 
-    if [ ! -d ${TEST_DIR} ]; then
+    if [ ! -d "${TEST_DIR}" ]; then
         echo "Directory ${TEST_DIR} was not created"
         exit 1
     fi
 }
 
 function rm_test_dir {
-    rmdir ${TEST_DIR}
-    if [ -e $TEST_DIR ]; then
+    rmdir "${TEST_DIR}"
+    if [ -e "${TEST_DIR}" ]; then
         echo "Could not remove the test directory, it still exists: ${TEST_DIR}"
         exit 1
     fi
@@ -138,18 +193,18 @@ function rm_test_dir {
 # Create and cd to a unique directory for this test run
 # Sets RUN_DIR to the name of the created directory
 function cd_run_dir {
-    if [ "$TEST_BUCKET_MOUNT_POINT_1" == "" ]; then
-        echo "TEST_BUCKET_MOUNT_POINT variable not set"
+    if [ "${TEST_BUCKET_MOUNT_POINT_1}" = "" ]; then
+        echo "TEST_BUCKET_MOUNT_POINT_1 variable not set"
         exit 1
     fi
-    RUN_DIR=${TEST_BUCKET_MOUNT_POINT_1}/${1}
-    mkdir -p ${RUN_DIR}
-    cd ${RUN_DIR}
+    local RUN_DIR="${TEST_BUCKET_MOUNT_POINT_1}/${1}"
+    mkdir -p "${RUN_DIR}"
+    cd "${RUN_DIR}"
 }
 
 function clean_run_dir {
-    if [  -d ${RUN_DIR} ]; then
-        rm -rf ${RUN_DIR} || echo "Error removing ${RUN_DIR}"
+    if [ -d "${RUN_DIR}" ]; then
+        rm -rf "${RUN_DIR}" || echo "Error removing ${RUN_DIR}"
     fi
 }
 
@@ -164,14 +219,14 @@ function init_suite {
 #   report_pass TEST_NAME
 function report_pass {
     echo "$1 passed"
-    TEST_PASSED_LIST+=($1)
+    TEST_PASSED_LIST+=("$1")
 }
 
 # Report a failing test case
 #   report_fail TEST_NAME
 function report_fail {
     echo "$1 failed"
-    TEST_FAILED_LIST+=($1)
+    TEST_FAILED_LIST+=("$1")
 }
 
 # Add tests to the suite
@@ -191,10 +246,17 @@ function describe {
 # directory in the bucket.  An attempt to clean this directory is
 # made after the test run.  
 function run_suite {
-   orig_dir=$PWD
-   key_prefix="testrun-$RANDOM"
-   cd_run_dir $key_prefix
+   orig_dir="${PWD}"
+   key_prefix="testrun-${RANDOM}"
+   cd_run_dir "${key_prefix}"
    for t in "${TEST_LIST[@]}"; do
+       # Ensure test input name differs every iteration
+       TEST_TEXT_FILE="test-s3fs-${RANDOM}.txt"
+       TEST_DIR="testdir-${RANDOM}"
+       # shellcheck disable=SC2034
+       ALT_TEST_TEXT_FILE="test-s3fs-ALT-${RANDOM}.txt"
+       # shellcheck disable=SC2034
+       BIG_FILE="big-file-s3fs-${RANDOM}.txt"
        # The following sequence runs tests in a subshell to allow continuation
        # on test failure, but still allowing errexit to be in effect during
        # the test.
@@ -202,32 +264,33 @@ function run_suite {
        # See:
        #     https://groups.google.com/d/msg/gnu.bash.bug/NCK_0GmIv2M/dkeZ9MFhPOIJ
        # Other ways of trying to capture the return value will also disable
-       # errexit in the function due to bash... compliance with POSIX? 
+       # errexit in the function due to bash... compliance with POSIX?
        set +o errexit
        (set -o errexit; $t $key_prefix)
-       if [[ $? == 0 ]]; then
-           report_pass $t
+       # shellcheck disable=SC2181
+       if [ $? == 0 ]; then
+           report_pass "${t}"
        else
-           report_fail $t
+           report_fail "${t}"
        fi
        set -o errexit
    done
-   cd ${orig_dir}
+   cd "${orig_dir}"
    clean_run_dir
 
    for t in "${TEST_PASSED_LIST[@]}"; do
-       echo "PASS: $t"
+       echo "PASS: ${t}"
    done
    for t in "${TEST_FAILED_LIST[@]}"; do
-       echo "FAIL: $t"
+       echo "FAIL: ${t}"
    done
 
-   passed=${#TEST_PASSED_LIST[@]} 
-   failed=${#TEST_FAILED_LIST[@]} 
+   local passed=${#TEST_PASSED_LIST[@]}
+   local failed=${#TEST_FAILED_LIST[@]}
 
-   echo "SUMMARY for $0: $passed tests passed.  $failed tests failed."
+   echo "SUMMARY for $0: ${passed} tests passed.  ${failed} tests failed."
 
-   if [[ $failed != 0 ]]; then
+   if [[ "${failed}" != 0 ]]; then
        return 1
    else
        return 0
@@ -235,34 +298,147 @@ function run_suite {
 }
 
 function get_ctime() {
-    if [ `uname` = "Darwin" ]; then
-        stat -f "%c" "$1"
+    # ex: "1657504903.019784214"
+    if [ "$(uname)" = "Darwin" ]; then
+        "${STAT_BIN[@]}" -f "%Fc" "$1"
     else
-        stat -c %Z "$1"
+        "${STAT_BIN[@]}" --format "%.9Z" "$1"
     fi
 }
 
 function get_mtime() {
-    if [ `uname` = "Darwin" ]; then
-        stat -f "%m" "$1"
+    # ex: "1657504903.019784214"
+    if [ "$(uname)" = "Darwin" ]; then
+        "${STAT_BIN[@]}" -f "%Fm" "$1"
     else
-        stat -c %Y "$1"
+        "${STAT_BIN[@]}" --format "%.9Y" "$1"
     fi
 }
+
+function get_atime() {
+    # ex: "1657504903.019784214"
+    if [ "$(uname)" = "Darwin" ]; then
+        "${STAT_BIN[@]}" -f "%Fa" "$1"
+    else
+        "${STAT_BIN[@]}" --format "%.9X" "$1"
+    fi
+}
+
+function get_permissions() {
+    if [ "$(uname)" = "Darwin" ]; then
+        "${STAT_BIN[@]}" -f "%p" "$1"
+    else
+        "${STAT_BIN[@]}" --format "%a" "$1"
+    fi
+}
+
+function get_user_and_group() {
+    if [ "$(uname)" = "Darwin" ]; then
+        stat -f "%u:%g" "$1"
+    else
+        "${STAT_BIN[@]}" --format "%u:%g" "$1"
+    fi
+}
+
 function check_content_type() {
-    INFO_STR=`aws_cli s3api head-object --bucket ${TEST_BUCKET_1} --key $1`
-    if [[ "${INFO_STR}" != *"$2"* ]]
+    local INFO_STR
+    INFO_STR=$(aws_cli s3api head-object --bucket "${TEST_BUCKET_1}" --key "$1" | jq -r .ContentType)
+    if [ "${INFO_STR}" != "$2" ]
     then
-        echo "moved file content-type is not as expected expected:$2 got:${INFO_STR}"
-        exit 1
+        echo "Expected Content-Type: $2 but got: ${INFO_STR}"
+        return 1
     fi
 }
 
 function get_disk_avail_size() {
-    DISK_AVAIL_SIZE=`BLOCKSIZE=$((1024 * 1024)) df $1 | awk '{print $4}' | tail -n 1`
-    echo ${DISK_AVAIL_SIZE}
+    local DISK_AVAIL_SIZE
+    DISK_AVAIL_SIZE=$(BLOCKSIZE=$((1024 * 1024)) df "$1" | awk '{print $4}' | tail -n 1)
+    echo "${DISK_AVAIL_SIZE}"
 }
 
 function aws_cli() {
-    AWS_ACCESS_KEY_ID=local-identity AWS_SECRET_ACCESS_KEY=local-credential aws $* --endpoint-url "${S3_URL}" --no-verify-ssl 
+    local FLAGS=""
+    if [ -n "${S3FS_PROFILE}" ]; then
+        FLAGS="--profile ${S3FS_PROFILE}"
+    fi
+
+    if [ "$1" = "s3" ] && [ "$2" != "ls" ] && [ "$2" != "mb" ]; then
+        if s3fs_args | grep -q use_sse=custom; then
+            FLAGS="${FLAGS} --sse-c AES256 --sse-c-key fileb:///tmp/ssekey.bin"
+        fi
+    elif [ "$1" = "s3api" ] && [ "$2" != "head-bucket" ]; then
+        if s3fs_args | grep -q use_sse=custom; then
+            FLAGS="${FLAGS} --sse-customer-algorithm AES256 --sse-customer-key $(cat /tmp/ssekey) --sse-customer-key-md5 $(cat /tmp/ssekeymd5)"
+        fi
+    fi
+
+    # [NOTE]
+    # AWS_EC2_METADATA_DISABLED for preventing the metadata service(to 169.254.169.254).
+    # shellcheck disable=SC2086,SC2068
+    AWS_EC2_METADATA_DISABLED=true aws $@ --endpoint-url "${S3_URL}" --ca-bundle /tmp/keystore.pem ${FLAGS}
 }
+
+function wait_for_port() {
+    local PORT="$1"
+    for _ in $(seq 30); do
+        if exec 3<>"/dev/tcp/127.0.0.1/${PORT}";
+        then
+            exec 3<&-  # Close for read
+            exec 3>&-  # Close for write
+            break
+        fi
+        sleep 1
+    done
+}
+
+function make_random_string() {
+    if [ -n "$1" ]; then
+        local END_POS="$1"
+    else
+        local END_POS=8
+    fi
+    if [ "$(uname)" = "Darwin" ]; then
+        local BASE64_OPT="--break=0"
+    else
+        local BASE64_OPT="--wrap=0"
+    fi
+    "${BASE64_BIN}" "${BASE64_OPT}" < /dev/urandom 2>/dev/null | tr -d /+ | head -c "${END_POS}"
+
+    return 0
+}
+
+function s3fs_args() {
+    if [ "$(uname)" = "Darwin" ]; then
+        ps -o args -p "${S3FS_PID}" | tail -n +2
+    else
+        ps -o args -p "${S3FS_PID}" --no-headers
+    fi
+}
+
+#
+# $1:    sleep seconds
+# $2:    OS type(ex. 'Darwin', unset(means all os type))
+#
+# [NOTE] macos fuse-t
+# macos fuse-t mounts over NFS, and the mtime/ctime/atime attribute
+# values are in seconds(not m/u/n-sec).
+# Therefore, unlike tests on other OSs, we have to wait at least 1
+# second.
+# This function is called primarily for this purpose.
+#
+function wait_ostype() {
+    if [ -z "$2" ] || uname | grep -q "$2"; then
+        if [ -n "$1" ] && ! (echo "$1" | grep -q '[^0-9]'); then
+            sleep "$1"
+        fi
+    fi
+}
+
+#
+# Local variables:
+# tab-width: 4
+# c-basic-offset: 4
+# End:
+# vim600: expandtab sw=4 ts=4 fdm=marker
+# vim<600: expandtab sw=4 ts=4
+#