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c49da9caef
As mentioned at https://chromium-review.googlesource.com/c/chromium/src/+/735820#message-e8b199498d8b850f2612c46648069d819dd47517, the typical Windows behavior for symbolic links requires administrative privileges. Symbolic links are available to non-administrators in Windows 10.0.15063 and later (1703, Creators Update), provided that developer mode has been enabled and SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE is passed to CreateSymbolicLink(). See https://blogs.windows.com/buildingapps/2016/12/02/symlinks-windows-10/. This adds SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE to uses of CreateSymbolicLink(), and creates test::CanCreateSymbolicLinks() to determine whether symbolic link creation is possible. Tests that exercise symbolic links are adapted to gate all symbolic link operations on this test. Test: crashpad_util_test DirectoryReader.*:Filesystem.* Change-Id: I8250cadd974ffcc7abe32701a0d5bc487061baf0 Bug: crashpad: Reviewed-on: https://chromium-review.googlesource.com/739472 Commit-Queue: Mark Mentovai <mark@chromium.org> Reviewed-by: Joshua Peraza <jperaza@chromium.org> Reviewed-by: Scott Graham <scottmg@chromium.org>
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
// Copyright 2017 The Crashpad Authors. All rights reserved.
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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 "util/file/filesystem.h"
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#include <errno.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "base/logging.h"
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namespace crashpad {
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bool LoggingCreateDirectory(const base::FilePath& path,
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FilePermissions permissions,
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bool may_reuse) {
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if (mkdir(path.value().c_str(),
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permissions == FilePermissions::kWorldReadable ? 0755 : 0700) ==
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0) {
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return true;
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}
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if (may_reuse && errno == EEXIST) {
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if (!IsDirectory(path, true)) {
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LOG(ERROR) << path.value() << " not a directory";
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return false;
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}
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return true;
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}
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PLOG(ERROR) << "mkdir " << path.value();
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return false;
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}
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bool MoveFileOrDirectory(const base::FilePath& source,
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const base::FilePath& dest) {
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if (rename(source.value().c_str(), dest.value().c_str()) != 0) {
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PLOG(ERROR) << "rename " << source.value().c_str() << ", "
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<< dest.value().c_str();
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return false;
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}
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return true;
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}
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bool IsRegularFile(const base::FilePath& path) {
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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) << "stat " << path.value();
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return false;
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}
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return S_ISREG(st.st_mode);
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}
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bool IsDirectory(const base::FilePath& path, bool allow_symlinks) {
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struct stat st;
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if (allow_symlinks) {
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if (stat(path.value().c_str(), &st) != 0) {
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PLOG(ERROR) << "stat " << path.value();
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return false;
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}
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} else 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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return S_ISDIR(st.st_mode);
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}
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bool LoggingRemoveFile(const base::FilePath& path) {
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if (unlink(path.value().c_str()) != 0) {
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PLOG(ERROR) << "unlink " << path.value();
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return false;
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}
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return true;
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}
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bool LoggingRemoveDirectory(const base::FilePath& path) {
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if (rmdir(path.value().c_str()) != 0) {
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PLOG(ERROR) << "rmdir " << path.value();
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return false;
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}
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return true;
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}
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} // namespace crashpad
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