1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 #include "base/test/test_file_util.h"
10 #include <sys/types.h>
14 #include "base/file_util.h"
15 #include "base/files/file_path.h"
16 #include "base/logging.h"
17 #include "base/strings/string_util.h"
18 #include "base/strings/utf_string_conversions.h"
20 using base::MakeAbsoluteFilePath;
26 // Deny |permission| on the file |path|.
27 bool DenyFilePermission(const base::FilePath& path, mode_t permission) {
29 if (stat(path.value().c_str(), &stat_buf) != 0)
31 stat_buf.st_mode &= ~permission;
33 int rv = HANDLE_EINTR(chmod(path.value().c_str(), stat_buf.st_mode));
37 // Gets a blob indicating the permission information for |path|.
38 // |length| is the length of the blob. Zero on failure.
39 // Returns the blob pointer, or NULL on failure.
40 void* GetPermissionInfo(const base::FilePath& path, size_t* length) {
45 if (stat(path.value().c_str(), &stat_buf) != 0)
48 *length = sizeof(mode_t);
49 mode_t* mode = new mode_t;
50 *mode = stat_buf.st_mode & ~S_IFMT; // Filter out file/path kind.
55 // Restores the permission information for |path|, given the blob retrieved
56 // using |GetPermissionInfo()|.
57 // |info| is the pointer to the blob.
58 // |length| is the length of the blob.
59 // Either |info| or |length| may be NULL/0, in which case nothing happens.
60 bool RestorePermissionInfo(const base::FilePath& path,
61 void* info, size_t length) {
62 if (!info || (length == 0))
65 DCHECK_EQ(sizeof(mode_t), length);
66 mode_t* mode = reinterpret_cast<mode_t*>(info);
68 int rv = HANDLE_EINTR(chmod(path.value().c_str(), *mode));
77 bool DieFileDie(const base::FilePath& file, bool recurse) {
78 // There is no need to workaround Windows problems on POSIX.
80 return base::DeleteFile(file, recurse);
83 #if !defined(OS_LINUX) && !defined(OS_MACOSX)
84 bool EvictFileFromSystemCache(const base::FilePath& file) {
85 // There doesn't seem to be a POSIX way to cool the disk cache.
91 std::wstring FilePathAsWString(const base::FilePath& path) {
92 return UTF8ToWide(path.value());
94 base::FilePath WStringAsFilePath(const std::wstring& path) {
95 return base::FilePath(WideToUTF8(path));
98 bool MakeFileUnreadable(const base::FilePath& path) {
99 return DenyFilePermission(path, S_IRUSR | S_IRGRP | S_IROTH);
102 bool MakeFileUnwritable(const base::FilePath& path) {
103 return DenyFilePermission(path, S_IWUSR | S_IWGRP | S_IWOTH);
106 PermissionRestorer::PermissionRestorer(const base::FilePath& path)
107 : path_(path), info_(NULL), length_(0) {
108 info_ = GetPermissionInfo(path_, &length_);
109 DCHECK(info_ != NULL);
110 DCHECK_NE(0u, length_);
113 PermissionRestorer::~PermissionRestorer() {
114 if (!RestorePermissionInfo(path_, info_, length_))
118 } // namespace file_util