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sed -i '' -E -e 's/Copyright (.+) The Crashpad Authors\. All rights reserved\.$/Copyright \1 The Crashpad Authors/' $(git grep -El 'Copyright (.+) The Crashpad Authors\. All rights reserved\.$') Bug: chromium:1098010 Change-Id: I8d6138469ddbe3d281a5d83f64cf918ec2491611 Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/3878262 Reviewed-by: Joshua Peraza <jperaza@chromium.org> Commit-Queue: Mark Mentovai <mark@chromium.org>
219 lines
6.4 KiB
C++
219 lines
6.4 KiB
C++
// Copyright 2017 The Crashpad Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "test/filesystem.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include "base/logging.h"
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#include "base/strings/utf_string_conversions.h"
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#include "build/build_config.h"
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#include "gtest/gtest.h"
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#include "test/errors.h"
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#include "test/scoped_temp_dir.h"
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#include "util/file/file_io.h"
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#include "util/file/filesystem.h"
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#include "util/misc/time.h"
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#if BUILDFLAG(IS_POSIX)
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#include <unistd.h>
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#include "base/posix/eintr_wrapper.h"
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#elif BUILDFLAG(IS_WIN)
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#include <windows.h>
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#endif
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namespace crashpad {
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namespace test {
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namespace {
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#if BUILDFLAG(IS_WIN)
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// Detects the flags necessary to create symbolic links and stores them in
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// |flags| if non-nullptr, and returns true on success. If symbolic links can’t
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// be created, returns false.
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bool SymbolicLinkFlags(DWORD* flags) {
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static DWORD symbolic_link_flags = []() {
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ScopedTempDir temp_dir_;
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base::FilePath target_path = temp_dir_.path().Append(L"target");
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base::FilePath symlink_path = temp_dir_.path().Append(L"symlink");
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if (::CreateSymbolicLink(
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symlink_path.value().c_str(), target_path.value().c_str(), 0)) {
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return 0;
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}
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DWORD error = GetLastError();
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if (error == ERROR_PRIVILEGE_NOT_HELD) {
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if (::CreateSymbolicLink(symlink_path.value().c_str(),
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target_path.value().c_str(),
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SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE)) {
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return SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE;
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}
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// This may fail with ERROR_INVALID_PARAMETER if the OS is too old to
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// understand SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE, so keep
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// ERROR_PRIVILEGE_NOT_HELD for |error|.
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}
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// Don’t use ErrorMessage() here because the second CreateSymbolicLink() may
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// have scrambled it. Use the saved |error| value instead.
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EXPECT_EQ(error, static_cast<DWORD>(ERROR_PRIVILEGE_NOT_HELD))
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<< "CreateSymbolicLink: " << logging::SystemErrorCodeToString(error);
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return -1;
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}();
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if (symbolic_link_flags == static_cast<DWORD>(-1)) {
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return false;
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}
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if (flags) {
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*flags = symbolic_link_flags;
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}
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return true;
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}
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#endif // BUILDFLAG(IS_WIN)
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} // namespace
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bool CreateFile(const base::FilePath& file) {
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ScopedFileHandle fd(LoggingOpenFileForWrite(
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file, FileWriteMode::kCreateOrFail, FilePermissions::kOwnerOnly));
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EXPECT_TRUE(fd.is_valid());
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return fd.is_valid();
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}
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bool PathExists(const base::FilePath& path) {
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#if BUILDFLAG(IS_POSIX)
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struct stat st;
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if (lstat(path.value().c_str(), &st) != 0) {
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EXPECT_EQ(errno, ENOENT) << ErrnoMessage("lstat ") << path.value();
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return false;
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}
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return true;
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#elif BUILDFLAG(IS_WIN)
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if (GetFileAttributes(path.value().c_str()) == INVALID_FILE_ATTRIBUTES) {
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EXPECT_EQ(GetLastError(), static_cast<DWORD>(ERROR_FILE_NOT_FOUND))
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<< ErrorMessage("GetFileAttributes ") << base::WideToUTF8(path.value());
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return false;
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}
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return true;
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#endif
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}
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bool SetFileModificationTime(const base::FilePath& path,
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const timespec& mtime) {
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#if BUILDFLAG(IS_APPLE)
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// utimensat() isn't available on macOS until 10.13, so lutimes() is used
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// instead.
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struct stat st;
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if (lstat(path.value().c_str(), &st) != 0) {
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PLOG(ERROR) << "lstat " << path.value();
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return false;
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}
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timeval times[2];
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EXPECT_TRUE(TimespecToTimeval(st.st_atimespec, ×[0]));
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EXPECT_TRUE(TimespecToTimeval(mtime, ×[1]));
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if (lutimes(path.value().c_str(), times) != 0) {
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PLOG(ERROR) << "lutimes " << path.value();
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return false;
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}
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return true;
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#elif BUILDFLAG(IS_POSIX)
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timespec times[2];
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times[0].tv_sec = 0;
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times[0].tv_nsec = UTIME_OMIT;
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times[1] = mtime;
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if (utimensat(AT_FDCWD, path.value().c_str(), times, AT_SYMLINK_NOFOLLOW) !=
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0) {
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PLOG(ERROR) << "utimensat " << path.value();
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return false;
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}
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return true;
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#elif BUILDFLAG(IS_WIN)
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DWORD flags = FILE_FLAG_OPEN_REPARSE_POINT;
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if (IsDirectory(path, true)) {
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// required for directory handles
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flags |= FILE_FLAG_BACKUP_SEMANTICS;
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}
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ScopedFileHandle handle(::CreateFile(path.value().c_str(),
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GENERIC_WRITE,
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FILE_SHARE_READ | FILE_SHARE_WRITE,
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nullptr,
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OPEN_EXISTING,
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flags,
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nullptr));
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if (!handle.is_valid()) {
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PLOG(ERROR) << "CreateFile " << base::WideToUTF8(path.value());
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return false;
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}
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FILETIME filetime = TimespecToFiletimeEpoch(mtime);
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if (!SetFileTime(handle.get(), nullptr, nullptr, &filetime)) {
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PLOG(ERROR) << "SetFileTime " << base::WideToUTF8(path.value());
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return false;
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}
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return true;
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#endif // BUILDFLAG(IS_APPLE)
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}
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#if !BUILDFLAG(IS_FUCHSIA)
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bool CanCreateSymbolicLinks() {
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#if BUILDFLAG(IS_POSIX)
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return true;
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#elif BUILDFLAG(IS_WIN)
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return SymbolicLinkFlags(nullptr);
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#endif // BUILDFLAG(IS_POSIX)
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}
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bool CreateSymbolicLink(const base::FilePath& target_path,
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const base::FilePath& symlink_path) {
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#if BUILDFLAG(IS_POSIX)
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int rv = HANDLE_EINTR(
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symlink(target_path.value().c_str(), symlink_path.value().c_str()));
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if (rv != 0) {
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PLOG(ERROR) << "symlink";
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return false;
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}
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return true;
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#elif BUILDFLAG(IS_WIN)
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DWORD symbolic_link_flags = 0;
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SymbolicLinkFlags(&symbolic_link_flags);
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if (!::CreateSymbolicLink(
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symlink_path.value().c_str(),
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target_path.value().c_str(),
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symbolic_link_flags |
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(IsDirectory(target_path, true) ? SYMBOLIC_LINK_FLAG_DIRECTORY
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: 0))) {
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PLOG(ERROR) << "CreateSymbolicLink";
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return false;
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}
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return true;
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#endif // BUILDFLAG(IS_POSIX)
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}
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#endif // !BUILDFLAG(IS_FUCHSIA)
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} // namespace test
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} // namespace crashpad
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