151 lines
4.1 KiB
C++
151 lines
4.1 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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#include "build/build_config.h"
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#include "util/file/directory_reader.h"
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namespace crashpad {
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bool FileModificationTime(const base::FilePath& path, timespec* mtime) {
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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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#if defined(OS_APPLE)
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*mtime = st.st_mtimespec;
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#elif defined(OS_ANDROID)
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// This is needed to compile with traditional NDK headers.
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mtime->tv_sec = st.st_mtime;
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mtime->tv_nsec = st.st_mtime_nsec;
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#else
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*mtime = st.st_mtim;
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#endif
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return true;
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}
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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_IF(ERROR, errno != ENOENT) << "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_IF(ERROR, errno != ENOENT) << "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_IF(ERROR, errno != ENOENT) << "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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uint64_t GetFileSize(const base::FilePath& filepath) {
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if (!IsRegularFile(filepath)) {
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return 0;
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}
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struct stat statbuf;
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if (stat(filepath.value().c_str(), &statbuf) == 0) {
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return statbuf.st_size;
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}
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PLOG(ERROR) << "stat " << filepath.value().c_str();
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return 0;
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}
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uint64_t GetDirectorySize(const base::FilePath& dirpath) {
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if (!IsDirectory(dirpath, /*allow_symlinks=*/false)) {
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return 0;
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}
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DirectoryReader reader;
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if (!reader.Open(dirpath)) {
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return 0;
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}
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base::FilePath filename;
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DirectoryReader::Result result;
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uint64_t size = 0;
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while ((result = reader.NextFile(&filename)) ==
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DirectoryReader::Result::kSuccess) {
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const base::FilePath filepath(dirpath.Append(filename));
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if (IsDirectory(filepath, /*allow_symlinks=*/false)) {
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size += GetDirectorySize(filepath);
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} else {
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size += GetFileSize(filepath);
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}
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}
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return size;
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}
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} // namespace crashpad
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