mirror of
https://github.com/mhx/dwarfs.git
synced 2025-09-12 05:49:56 -04:00
Move make_file_stat to file_stat module
This commit is contained in:
Marcus Holland-Moritz
parent
5df3dd64be
commit
2dfc39eb6f
@ -430,6 +430,7 @@ list(
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src/dwarfs/entry.cpp
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src/dwarfs/error.cpp
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src/dwarfs/file_scanner.cpp
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src/dwarfs/file_stat.cpp
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src/dwarfs/file_type.cpp
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src/dwarfs/filesystem_extractor.cpp
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src/dwarfs/filesystem_v2.cpp
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@ -81,6 +81,8 @@ struct file_stat {
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time_type ctime;
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};
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file_stat make_file_stat(std::filesystem::path const& path);
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template <bool with_block_info = true, typename T>
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void copy_file_stat(T* out, file_stat const& in) {
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out->st_dev = in.dev;
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173
src/dwarfs/file_stat.cpp
Normal file
173
src/dwarfs/file_stat.cpp
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@ -0,0 +1,173 @@
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/* vim:set ts=2 sw=2 sts=2 et: */
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/**
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* \author Marcus Holland-Moritz (github@mhxnet.de)
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* \copyright Copyright (c) Marcus Holland-Moritz
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*
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* This file is part of dwarfs.
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*
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* dwarfs is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* dwarfs is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with dwarfs. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <cerrno>
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#include <ctime>
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#include <filesystem>
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#include <stdexcept>
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#include <vector>
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#ifdef _WIN32
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#include <folly/portability/Windows.h>
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#else
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#include <fcntl.h>
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#endif
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#include <folly/portability/Unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fmt/format.h>
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#include "dwarfs/error.h"
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#include "dwarfs/mmap.h"
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#include "dwarfs/os_access_generic.h"
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namespace dwarfs {
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namespace {
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namespace fs = std::filesystem;
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#ifdef _WIN32
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uint64_t time_from_filetime(FILETIME const& ft) {
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static constexpr uint64_t FT_TICKS_PER_SECOND = UINT64_C(10000000);
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static constexpr uint64_t FT_EPOCH_OFFSET = UINT64_C(11644473600);
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uint64_t ticks =
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(static_cast<uint64_t>(ft.dwHighDateTime) << 32) + ft.dwLowDateTime;
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return (ticks / FT_TICKS_PER_SECOND) - FT_EPOCH_OFFSET;
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}
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#endif
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} // namespace
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#ifdef _WIN32
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file_stat make_file_stat(fs::path const& path) {
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auto status = fs::symlink_status(path);
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file_stat rv;
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rv.mode = file_status_to_mode(status);
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rv.blksize = 0;
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rv.blocks = 0;
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auto wps = path.wstring();
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if (status.type() == fs::file_type::symlink) {
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::WIN32_FILE_ATTRIBUTE_DATA info;
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if (::GetFileAttributesExW(wps.c_str(), GetFileExInfoStandard, &info) ==
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0) {
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throw std::system_error(::GetLastError(), std::system_category(),
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"GetFileAttributesExW");
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}
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rv.dev = 0;
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rv.ino = 0;
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rv.nlink = 0;
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rv.uid = 0;
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rv.gid = 0;
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rv.rdev = 0;
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rv.size =
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(static_cast<uint64_t>(info.nFileSizeHigh) << 32) + info.nFileSizeLow;
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rv.atime = time_from_filetime(info.ftLastAccessTime);
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rv.mtime = time_from_filetime(info.ftLastWriteTime);
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rv.ctime = time_from_filetime(info.ftCreationTime);
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} else {
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struct ::__stat64 st;
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if (::_wstat64(wps.c_str(), &st) != 0) {
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throw std::system_error(errno, std::generic_category(), "_stat64");
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}
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if (status.type() == fs::file_type::regular) {
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::HANDLE hdl =
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::CreateFileW(wps.c_str(), 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
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if (hdl == INVALID_HANDLE_VALUE) {
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throw std::system_error(::GetLastError(), std::system_category(),
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fmt::format("CreateFileW({})", path.string()));
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}
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::BY_HANDLE_FILE_INFORMATION info;
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if (!::GetFileInformationByHandle(hdl, &info)) {
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throw std::system_error(::GetLastError(), std::system_category(),
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"GetFileInformationByHandle");
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}
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if (!::CloseHandle(hdl)) {
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throw std::system_error(::GetLastError(), std::system_category(),
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"CloseHandle");
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}
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rv.ino = (static_cast<uint64_t>(info.nFileIndexHigh) << 32) +
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info.nFileIndexLow;
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rv.nlink = info.nNumberOfLinks;
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} else {
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rv.ino = st.st_ino;
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rv.nlink = st.st_nlink;
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}
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rv.dev = st.st_dev;
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rv.uid = st.st_uid;
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rv.gid = st.st_gid;
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rv.rdev = st.st_rdev;
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rv.size = st.st_size;
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rv.atime = st.st_atime;
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rv.mtime = st.st_mtime;
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rv.ctime = st.st_ctime;
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}
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return rv;
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}
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#else
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file_stat make_file_stat(fs::path const& path) {
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struct ::stat st;
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if (::lstat(path.string().c_str(), &st) != 0) {
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throw std::system_error(errno, std::generic_category(), "lstat");
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}
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file_stat rv;
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rv.dev = st.st_dev;
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rv.ino = st.st_ino;
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rv.nlink = st.st_nlink;
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rv.mode = st.st_mode;
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rv.uid = st.st_uid;
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rv.gid = st.st_gid;
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rv.rdev = st.st_rdev;
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rv.size = st.st_size;
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rv.blksize = st.st_blksize;
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rv.blocks = st.st_blocks;
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rv.atime = st.st_atim.tv_sec;
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rv.mtime = st.st_mtim.tv_sec;
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rv.ctime = st.st_ctim.tv_sec;
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return rv;
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}
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#endif
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} // namespace dwarfs
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@ -19,26 +19,8 @@
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* along with dwarfs. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <cerrno>
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#include <ctime>
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#include <filesystem>
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#include <stdexcept>
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#include <vector>
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#ifdef _WIN32
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#include <folly/portability/Windows.h>
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#else
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#include <fcntl.h>
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#endif
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#include <folly/portability/Unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <fmt/format.h>
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#include "dwarfs/error.h"
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#include "dwarfs/mmap.h"
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#include "dwarfs/os_access_generic.h"
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@ -48,122 +30,6 @@ namespace fs = std::filesystem;
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namespace {
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#ifdef _WIN32
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uint64_t time_from_filetime(FILETIME const& ft) {
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static constexpr uint64_t FT_TICKS_PER_SECOND = UINT64_C(10000000);
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static constexpr uint64_t FT_EPOCH_OFFSET = UINT64_C(11644473600);
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uint64_t ticks =
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(static_cast<uint64_t>(ft.dwHighDateTime) << 32) + ft.dwLowDateTime;
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return (ticks / FT_TICKS_PER_SECOND) - FT_EPOCH_OFFSET;
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}
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file_stat make_file_stat(fs::path const& path) {
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auto status = fs::symlink_status(path);
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file_stat rv;
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rv.mode = file_status_to_mode(status);
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rv.blksize = 0;
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rv.blocks = 0;
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auto wps = path.wstring();
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if (status.type() == fs::file_type::symlink) {
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::WIN32_FILE_ATTRIBUTE_DATA info;
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if (::GetFileAttributesExW(wps.c_str(), GetFileExInfoStandard, &info) ==
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0) {
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throw std::system_error(::GetLastError(), std::system_category(),
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"GetFileAttributesExW");
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}
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rv.dev = 0;
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rv.ino = 0;
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rv.nlink = 0;
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rv.uid = 0;
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rv.gid = 0;
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rv.rdev = 0;
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rv.size =
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(static_cast<uint64_t>(info.nFileSizeHigh) << 32) + info.nFileSizeLow;
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rv.atime = time_from_filetime(info.ftLastAccessTime);
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rv.mtime = time_from_filetime(info.ftLastWriteTime);
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rv.ctime = time_from_filetime(info.ftCreationTime);
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} else {
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struct ::__stat64 st;
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if (::_wstat64(wps.c_str(), &st) != 0) {
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throw std::system_error(errno, std::generic_category(), "_stat64");
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}
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if (status.type() == fs::file_type::regular) {
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::HANDLE hdl =
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::CreateFileW(wps.c_str(), 0, FILE_SHARE_READ, NULL, OPEN_EXISTING,
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FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED, NULL);
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if (hdl == INVALID_HANDLE_VALUE) {
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throw std::system_error(::GetLastError(), std::system_category(),
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fmt::format("CreateFileW({})", path.string()));
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}
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::BY_HANDLE_FILE_INFORMATION info;
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if (!::GetFileInformationByHandle(hdl, &info)) {
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throw std::system_error(::GetLastError(), std::system_category(),
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"GetFileInformationByHandle");
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}
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if (!::CloseHandle(hdl)) {
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throw std::system_error(::GetLastError(), std::system_category(),
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"CloseHandle");
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}
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rv.ino = (static_cast<uint64_t>(info.nFileIndexHigh) << 32) +
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info.nFileIndexLow;
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rv.nlink = info.nNumberOfLinks;
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} else {
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rv.ino = st.st_ino;
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rv.nlink = st.st_nlink;
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}
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rv.dev = st.st_dev;
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rv.uid = st.st_uid;
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rv.gid = st.st_gid;
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rv.rdev = st.st_rdev;
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rv.size = st.st_size;
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rv.atime = st.st_atime;
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rv.mtime = st.st_mtime;
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rv.ctime = st.st_ctime;
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}
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return rv;
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}
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#else
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file_stat make_file_stat(fs::path const& path) {
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struct ::stat st;
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if (::lstat(path.string().c_str(), &st) != 0) {
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throw std::system_error(errno, std::generic_category(), "lstat");
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}
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file_stat rv;
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rv.dev = st.st_dev;
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rv.ino = st.st_ino;
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rv.nlink = st.st_nlink;
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rv.mode = st.st_mode;
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rv.uid = st.st_uid;
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rv.gid = st.st_gid;
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rv.rdev = st.st_rdev;
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rv.size = st.st_size;
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rv.blksize = st.st_blksize;
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rv.blocks = st.st_blocks;
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rv.atime = st.st_atim.tv_sec;
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rv.mtime = st.st_mtim.tv_sec;
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rv.ctime = st.st_ctim.tv_sec;
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return rv;
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}
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#endif
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class generic_dir_reader final : public dir_reader {
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public:
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explicit generic_dir_reader(fs::path const& path)
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