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| 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. | |
| 4 | |
| 5 #include "webkit/browser/fileapi/native_file_util.h" | |
| 6 | |
| 7 #include "base/files/file.h" | |
| 8 #include "base/files/file_enumerator.h" | |
| 9 #include "base/files/file_util.h" | |
| 10 #include "base/memory/scoped_ptr.h" | |
| 11 #include "webkit/browser/fileapi/file_system_operation_context.h" | |
| 12 #include "webkit/browser/fileapi/file_system_url.h" | |
| 13 | |
| 14 namespace storage { | |
| 15 | |
| 16 namespace { | |
| 17 | |
| 18 // Sets permissions on directory at |dir_path| based on the target platform. | |
| 19 // Returns true on success, or false otherwise. | |
| 20 // | |
| 21 // TODO(benchan): Find a better place outside webkit to host this function. | |
| 22 bool SetPlatformSpecificDirectoryPermissions(const base::FilePath& dir_path) { | |
| 23 #if defined(OS_CHROMEOS) | |
| 24 // System daemons on Chrome OS may run as a user different than the Chrome | |
| 25 // process but need to access files under the directories created here. | |
| 26 // Because of that, grant the execute permission on the created directory | |
| 27 // to group and other users. | |
| 28 if (HANDLE_EINTR(chmod(dir_path.value().c_str(), | |
| 29 S_IRWXU | S_IXGRP | S_IXOTH)) != 0) { | |
| 30 return false; | |
| 31 } | |
| 32 #endif | |
| 33 // Keep the directory permissions unchanged on non-Chrome OS platforms. | |
| 34 return true; | |
| 35 } | |
| 36 | |
| 37 // Copies a file |from| to |to|, and ensure the written content is synced to | |
| 38 // the disk. This is essentially base::CopyFile followed by fsync(). | |
| 39 bool CopyFileAndSync(const base::FilePath& from, const base::FilePath& to) { | |
| 40 base::File infile(from, base::File::FLAG_OPEN | base::File::FLAG_READ); | |
| 41 if (!infile.IsValid()) { | |
| 42 return false; | |
| 43 } | |
| 44 | |
| 45 base::File outfile(to, | |
| 46 base::File::FLAG_CREATE_ALWAYS | base::File::FLAG_WRITE); | |
| 47 if (!outfile.IsValid()) { | |
| 48 return false; | |
| 49 } | |
| 50 | |
| 51 const int kBufferSize = 32768; | |
| 52 std::vector<char> buffer(kBufferSize); | |
| 53 | |
| 54 for (;;) { | |
| 55 int bytes_read = infile.ReadAtCurrentPos(&buffer[0], kBufferSize); | |
| 56 if (bytes_read < 0) | |
| 57 return false; | |
| 58 if (bytes_read == 0) | |
| 59 break; | |
| 60 for (int bytes_written = 0; bytes_written < bytes_read; ) { | |
| 61 int bytes_written_partial = outfile.WriteAtCurrentPos( | |
| 62 &buffer[bytes_written], bytes_read - bytes_written); | |
| 63 if (bytes_written_partial < 0) | |
| 64 return false; | |
| 65 bytes_written += bytes_written_partial; | |
| 66 } | |
| 67 } | |
| 68 | |
| 69 return outfile.Flush(); | |
| 70 } | |
| 71 | |
| 72 } // namespace | |
| 73 | |
| 74 using base::PlatformFile; | |
| 75 | |
| 76 class NativeFileEnumerator : public FileSystemFileUtil::AbstractFileEnumerator { | |
| 77 public: | |
| 78 NativeFileEnumerator(const base::FilePath& root_path, | |
| 79 bool recursive, | |
| 80 int file_type) | |
| 81 : file_enum_(root_path, recursive, file_type) { | |
| 82 } | |
| 83 | |
| 84 virtual ~NativeFileEnumerator() {} | |
| 85 | |
| 86 virtual base::FilePath Next() OVERRIDE; | |
| 87 virtual int64 Size() OVERRIDE; | |
| 88 virtual base::Time LastModifiedTime() OVERRIDE; | |
| 89 virtual bool IsDirectory() OVERRIDE; | |
| 90 | |
| 91 private: | |
| 92 base::FileEnumerator file_enum_; | |
| 93 base::FileEnumerator::FileInfo file_util_info_; | |
| 94 }; | |
| 95 | |
| 96 base::FilePath NativeFileEnumerator::Next() { | |
| 97 base::FilePath rv = file_enum_.Next(); | |
| 98 if (!rv.empty()) | |
| 99 file_util_info_ = file_enum_.GetInfo(); | |
| 100 return rv; | |
| 101 } | |
| 102 | |
| 103 int64 NativeFileEnumerator::Size() { | |
| 104 return file_util_info_.GetSize(); | |
| 105 } | |
| 106 | |
| 107 base::Time NativeFileEnumerator::LastModifiedTime() { | |
| 108 return file_util_info_.GetLastModifiedTime(); | |
| 109 } | |
| 110 | |
| 111 bool NativeFileEnumerator::IsDirectory() { | |
| 112 return file_util_info_.IsDirectory(); | |
| 113 } | |
| 114 | |
| 115 NativeFileUtil::CopyOrMoveMode NativeFileUtil::CopyOrMoveModeForDestination( | |
| 116 const FileSystemURL& dest_url, bool copy) { | |
| 117 if (copy) { | |
| 118 return dest_url.mount_option().copy_sync_option() == COPY_SYNC_OPTION_SYNC ? | |
| 119 COPY_SYNC : COPY_NOSYNC; | |
| 120 } | |
| 121 return MOVE; | |
| 122 } | |
| 123 | |
| 124 base::File NativeFileUtil::CreateOrOpen(const base::FilePath& path, | |
| 125 int file_flags) { | |
| 126 if (!base::DirectoryExists(path.DirName())) { | |
| 127 // If its parent does not exist, should return NOT_FOUND error. | |
| 128 return base::File(base::File::FILE_ERROR_NOT_FOUND); | |
| 129 } | |
| 130 | |
| 131 // TODO(rvargas): Check |file_flags| instead. See bug 356358. | |
| 132 if (base::DirectoryExists(path)) | |
| 133 return base::File(base::File::FILE_ERROR_NOT_A_FILE); | |
| 134 | |
| 135 return base::File(path, file_flags); | |
| 136 } | |
| 137 | |
| 138 base::File::Error NativeFileUtil::EnsureFileExists( | |
| 139 const base::FilePath& path, | |
| 140 bool* created) { | |
| 141 if (!base::DirectoryExists(path.DirName())) | |
| 142 // If its parent does not exist, should return NOT_FOUND error. | |
| 143 return base::File::FILE_ERROR_NOT_FOUND; | |
| 144 | |
| 145 // Tries to create the |path| exclusively. This should fail | |
| 146 // with base::File::FILE_ERROR_EXISTS if the path already exists. | |
| 147 base::File file(path, base::File::FLAG_CREATE | base::File::FLAG_READ); | |
| 148 | |
| 149 if (file.IsValid()) { | |
| 150 if (created) | |
| 151 *created = file.created(); | |
| 152 return base::File::FILE_OK; | |
| 153 } | |
| 154 | |
| 155 base::File::Error error_code = file.error_details(); | |
| 156 if (error_code == base::File::FILE_ERROR_EXISTS) { | |
| 157 // Make sure created_ is false. | |
| 158 if (created) | |
| 159 *created = false; | |
| 160 error_code = base::File::FILE_OK; | |
| 161 } | |
| 162 return error_code; | |
| 163 } | |
| 164 | |
| 165 base::File::Error NativeFileUtil::CreateDirectory( | |
| 166 const base::FilePath& path, | |
| 167 bool exclusive, | |
| 168 bool recursive) { | |
| 169 // If parent dir of file doesn't exist. | |
| 170 if (!recursive && !base::PathExists(path.DirName())) | |
| 171 return base::File::FILE_ERROR_NOT_FOUND; | |
| 172 | |
| 173 bool path_exists = base::PathExists(path); | |
| 174 if (exclusive && path_exists) | |
| 175 return base::File::FILE_ERROR_EXISTS; | |
| 176 | |
| 177 // If file exists at the path. | |
| 178 if (path_exists && !base::DirectoryExists(path)) | |
| 179 return base::File::FILE_ERROR_EXISTS; | |
| 180 | |
| 181 if (!base::CreateDirectory(path)) | |
| 182 return base::File::FILE_ERROR_FAILED; | |
| 183 | |
| 184 if (!SetPlatformSpecificDirectoryPermissions(path)) { | |
| 185 // Since some file systems don't support permission setting, we do not treat | |
| 186 // an error from the function as the failure of copying. Just log it. | |
| 187 LOG(WARNING) << "Setting directory permission failed: " | |
| 188 << path.AsUTF8Unsafe(); | |
| 189 } | |
| 190 | |
| 191 return base::File::FILE_OK; | |
| 192 } | |
| 193 | |
| 194 base::File::Error NativeFileUtil::GetFileInfo( | |
| 195 const base::FilePath& path, | |
| 196 base::File::Info* file_info) { | |
| 197 if (!base::PathExists(path)) | |
| 198 return base::File::FILE_ERROR_NOT_FOUND; | |
| 199 | |
| 200 if (!base::GetFileInfo(path, file_info)) | |
| 201 return base::File::FILE_ERROR_FAILED; | |
| 202 return base::File::FILE_OK; | |
| 203 } | |
| 204 | |
| 205 scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator> | |
| 206 NativeFileUtil::CreateFileEnumerator(const base::FilePath& root_path, | |
| 207 bool recursive) { | |
| 208 return make_scoped_ptr(new NativeFileEnumerator( | |
| 209 root_path, recursive, | |
| 210 base::FileEnumerator::FILES | base::FileEnumerator::DIRECTORIES)) | |
| 211 .PassAs<FileSystemFileUtil::AbstractFileEnumerator>(); | |
| 212 } | |
| 213 | |
| 214 base::File::Error NativeFileUtil::Touch( | |
| 215 const base::FilePath& path, | |
| 216 const base::Time& last_access_time, | |
| 217 const base::Time& last_modified_time) { | |
| 218 if (!base::TouchFile(path, last_access_time, last_modified_time)) | |
| 219 return base::File::FILE_ERROR_FAILED; | |
| 220 return base::File::FILE_OK; | |
| 221 } | |
| 222 | |
| 223 base::File::Error NativeFileUtil::Truncate(const base::FilePath& path, | |
| 224 int64 length) { | |
| 225 base::File file(path, base::File::FLAG_OPEN | base::File::FLAG_WRITE); | |
| 226 if (!file.IsValid()) | |
| 227 return file.error_details(); | |
| 228 | |
| 229 if (!file.SetLength(length)) | |
| 230 return base::File::FILE_ERROR_FAILED; | |
| 231 | |
| 232 return base::File::FILE_OK; | |
| 233 } | |
| 234 | |
| 235 bool NativeFileUtil::PathExists(const base::FilePath& path) { | |
| 236 return base::PathExists(path); | |
| 237 } | |
| 238 | |
| 239 bool NativeFileUtil::DirectoryExists(const base::FilePath& path) { | |
| 240 return base::DirectoryExists(path); | |
| 241 } | |
| 242 | |
| 243 base::File::Error NativeFileUtil::CopyOrMoveFile( | |
| 244 const base::FilePath& src_path, | |
| 245 const base::FilePath& dest_path, | |
| 246 FileSystemOperation::CopyOrMoveOption option, | |
| 247 CopyOrMoveMode mode) { | |
| 248 base::File::Info info; | |
| 249 base::File::Error error = NativeFileUtil::GetFileInfo(src_path, &info); | |
| 250 if (error != base::File::FILE_OK) | |
| 251 return error; | |
| 252 if (info.is_directory) | |
| 253 return base::File::FILE_ERROR_NOT_A_FILE; | |
| 254 base::Time last_modified = info.last_modified; | |
| 255 | |
| 256 error = NativeFileUtil::GetFileInfo(dest_path, &info); | |
| 257 if (error != base::File::FILE_OK && | |
| 258 error != base::File::FILE_ERROR_NOT_FOUND) | |
| 259 return error; | |
| 260 if (info.is_directory) | |
| 261 return base::File::FILE_ERROR_INVALID_OPERATION; | |
| 262 if (error == base::File::FILE_ERROR_NOT_FOUND) { | |
| 263 error = NativeFileUtil::GetFileInfo(dest_path.DirName(), &info); | |
| 264 if (error != base::File::FILE_OK) | |
| 265 return error; | |
| 266 if (!info.is_directory) | |
| 267 return base::File::FILE_ERROR_NOT_FOUND; | |
| 268 } | |
| 269 | |
| 270 switch (mode) { | |
| 271 case COPY_NOSYNC: | |
| 272 if (!base::CopyFile(src_path, dest_path)) | |
| 273 return base::File::FILE_ERROR_FAILED; | |
| 274 break; | |
| 275 case COPY_SYNC: | |
| 276 if (!CopyFileAndSync(src_path, dest_path)) | |
| 277 return base::File::FILE_ERROR_FAILED; | |
| 278 break; | |
| 279 case MOVE: | |
| 280 if (!base::Move(src_path, dest_path)) | |
| 281 return base::File::FILE_ERROR_FAILED; | |
| 282 break; | |
| 283 } | |
| 284 | |
| 285 // Preserve the last modified time. Do not return error here even if | |
| 286 // the setting is failed, because the copy itself is successfully done. | |
| 287 if (option == FileSystemOperation::OPTION_PRESERVE_LAST_MODIFIED) | |
| 288 base::TouchFile(dest_path, last_modified, last_modified); | |
| 289 | |
| 290 return base::File::FILE_OK; | |
| 291 } | |
| 292 | |
| 293 base::File::Error NativeFileUtil::DeleteFile(const base::FilePath& path) { | |
| 294 if (!base::PathExists(path)) | |
| 295 return base::File::FILE_ERROR_NOT_FOUND; | |
| 296 if (base::DirectoryExists(path)) | |
| 297 return base::File::FILE_ERROR_NOT_A_FILE; | |
| 298 if (!base::DeleteFile(path, false)) | |
| 299 return base::File::FILE_ERROR_FAILED; | |
| 300 return base::File::FILE_OK; | |
| 301 } | |
| 302 | |
| 303 base::File::Error NativeFileUtil::DeleteDirectory(const base::FilePath& path) { | |
| 304 if (!base::PathExists(path)) | |
| 305 return base::File::FILE_ERROR_NOT_FOUND; | |
| 306 if (!base::DirectoryExists(path)) | |
| 307 return base::File::FILE_ERROR_NOT_A_DIRECTORY; | |
| 308 if (!base::IsDirectoryEmpty(path)) | |
| 309 return base::File::FILE_ERROR_NOT_EMPTY; | |
| 310 if (!base::DeleteFile(path, false)) | |
| 311 return base::File::FILE_ERROR_FAILED; | |
| 312 return base::File::FILE_OK; | |
| 313 } | |
| 314 | |
| 315 } // namespace storage | |
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Chromium Code Reviews
Issue 539143002:
Migrate webkit/browser/ to storage/browser/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master