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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/file_system_context.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/single_thread_task_runner.h" | |
| 9 #include "base/stl_util.h" | |
| 10 #include "base/task_runner_util.h" | |
| 11 #include "net/url_request/url_request.h" | |
| 12 #include "url/gurl.h" | |
| 13 #include "webkit/browser/blob/file_stream_reader.h" | |
| 14 #include "webkit/browser/fileapi/copy_or_move_file_validator.h" | |
| 15 #include "webkit/browser/fileapi/external_mount_points.h" | |
| 16 #include "webkit/browser/fileapi/file_permission_policy.h" | |
| 17 #include "webkit/browser/fileapi/file_stream_writer.h" | |
| 18 #include "webkit/browser/fileapi/file_system_file_util.h" | |
| 19 #include "webkit/browser/fileapi/file_system_operation.h" | |
| 20 #include "webkit/browser/fileapi/file_system_operation_runner.h" | |
| 21 #include "webkit/browser/fileapi/file_system_options.h" | |
| 22 #include "webkit/browser/fileapi/file_system_quota_client.h" | |
| 23 #include "webkit/browser/fileapi/file_system_url.h" | |
| 24 #include "webkit/browser/fileapi/isolated_context.h" | |
| 25 #include "webkit/browser/fileapi/isolated_file_system_backend.h" | |
| 26 #include "webkit/browser/fileapi/mount_points.h" | |
| 27 #include "webkit/browser/fileapi/quota/quota_reservation.h" | |
| 28 #include "webkit/browser/fileapi/sandbox_file_system_backend.h" | |
| 29 #include "webkit/browser/quota/quota_manager_proxy.h" | |
| 30 #include "webkit/browser/quota/special_storage_policy.h" | |
| 31 #include "webkit/common/fileapi/file_system_info.h" | |
| 32 #include "webkit/common/fileapi/file_system_util.h" | |
| 33 | |
| 34 using quota::QuotaClient; | |
| 35 | |
| 36 namespace fileapi { | |
| 37 | |
| 38 namespace { | |
| 39 | |
| 40 QuotaClient* CreateQuotaClient( | |
| 41 FileSystemContext* context, | |
| 42 bool is_incognito) { | |
| 43 return new FileSystemQuotaClient(context, is_incognito); | |
| 44 } | |
| 45 | |
| 46 | |
| 47 void DidGetMetadataForResolveURL( | |
| 48 const base::FilePath& path, | |
| 49 const FileSystemContext::ResolveURLCallback& callback, | |
| 50 const FileSystemInfo& info, | |
| 51 base::File::Error error, | |
| 52 const base::File::Info& file_info) { | |
| 53 if (error != base::File::FILE_OK) { | |
| 54 if (error == base::File::FILE_ERROR_NOT_FOUND) { | |
| 55 callback.Run(base::File::FILE_OK, info, path, | |
| 56 FileSystemContext::RESOLVED_ENTRY_NOT_FOUND); | |
| 57 } else { | |
| 58 callback.Run(error, FileSystemInfo(), base::FilePath(), | |
| 59 FileSystemContext::RESOLVED_ENTRY_NOT_FOUND); | |
| 60 } | |
| 61 return; | |
| 62 } | |
| 63 callback.Run(error, info, path, file_info.is_directory ? | |
| 64 FileSystemContext::RESOLVED_ENTRY_DIRECTORY : | |
| 65 FileSystemContext::RESOLVED_ENTRY_FILE); | |
| 66 } | |
| 67 | |
| 68 void RelayResolveURLCallback( | |
| 69 scoped_refptr<base::MessageLoopProxy> message_loop, | |
| 70 const FileSystemContext::ResolveURLCallback& callback, | |
| 71 base::File::Error result, | |
| 72 const FileSystemInfo& info, | |
| 73 const base::FilePath& file_path, | |
| 74 FileSystemContext::ResolvedEntryType type) { | |
| 75 message_loop->PostTask( | |
| 76 FROM_HERE, base::Bind(callback, result, info, file_path, type)); | |
| 77 } | |
| 78 | |
| 79 } // namespace | |
| 80 | |
| 81 // static | |
| 82 int FileSystemContext::GetPermissionPolicy(FileSystemType type) { | |
| 83 switch (type) { | |
| 84 case kFileSystemTypeTemporary: | |
| 85 case kFileSystemTypePersistent: | |
| 86 case kFileSystemTypeSyncable: | |
| 87 return FILE_PERMISSION_SANDBOX; | |
| 88 | |
| 89 case kFileSystemTypeDrive: | |
| 90 case kFileSystemTypeNativeForPlatformApp: | |
| 91 case kFileSystemTypeNativeLocal: | |
| 92 case kFileSystemTypeCloudDevice: | |
| 93 case kFileSystemTypeProvided: | |
| 94 case kFileSystemTypeDeviceMediaAsFileStorage: | |
| 95 return FILE_PERMISSION_USE_FILE_PERMISSION; | |
| 96 | |
| 97 case kFileSystemTypeRestrictedNativeLocal: | |
| 98 return FILE_PERMISSION_READ_ONLY | | |
| 99 FILE_PERMISSION_USE_FILE_PERMISSION; | |
| 100 | |
| 101 case kFileSystemTypeDeviceMedia: | |
| 102 case kFileSystemTypeIphoto: | |
| 103 case kFileSystemTypeItunes: | |
| 104 case kFileSystemTypeNativeMedia: | |
| 105 case kFileSystemTypePicasa: | |
| 106 return FILE_PERMISSION_USE_FILE_PERMISSION; | |
| 107 | |
| 108 // Following types are only accessed via IsolatedFileSystem, and | |
| 109 // don't have their own permission policies. | |
| 110 case kFileSystemTypeDragged: | |
| 111 case kFileSystemTypeForTransientFile: | |
| 112 case kFileSystemTypePluginPrivate: | |
| 113 return FILE_PERMISSION_ALWAYS_DENY; | |
| 114 | |
| 115 // Following types only appear as mount_type, and will not be | |
| 116 // queried for their permission policies. | |
| 117 case kFileSystemTypeIsolated: | |
| 118 case kFileSystemTypeExternal: | |
| 119 return FILE_PERMISSION_ALWAYS_DENY; | |
| 120 | |
| 121 // Following types should not be used to access files by FileAPI clients. | |
| 122 case kFileSystemTypeTest: | |
| 123 case kFileSystemTypeSyncableForInternalSync: | |
| 124 case kFileSystemInternalTypeEnumEnd: | |
| 125 case kFileSystemInternalTypeEnumStart: | |
| 126 case kFileSystemTypeUnknown: | |
| 127 return FILE_PERMISSION_ALWAYS_DENY; | |
| 128 } | |
| 129 NOTREACHED(); | |
| 130 return FILE_PERMISSION_ALWAYS_DENY; | |
| 131 } | |
| 132 | |
| 133 FileSystemContext::FileSystemContext( | |
| 134 base::SingleThreadTaskRunner* io_task_runner, | |
| 135 base::SequencedTaskRunner* file_task_runner, | |
| 136 ExternalMountPoints* external_mount_points, | |
| 137 quota::SpecialStoragePolicy* special_storage_policy, | |
| 138 quota::QuotaManagerProxy* quota_manager_proxy, | |
| 139 ScopedVector<FileSystemBackend> additional_backends, | |
| 140 const std::vector<URLRequestAutoMountHandler>& auto_mount_handlers, | |
| 141 const base::FilePath& partition_path, | |
| 142 const FileSystemOptions& options) | |
| 143 : io_task_runner_(io_task_runner), | |
| 144 default_file_task_runner_(file_task_runner), | |
| 145 quota_manager_proxy_(quota_manager_proxy), | |
| 146 sandbox_delegate_(new SandboxFileSystemBackendDelegate( | |
| 147 quota_manager_proxy, | |
| 148 file_task_runner, | |
| 149 partition_path, | |
| 150 special_storage_policy, | |
| 151 options)), | |
| 152 sandbox_backend_(new SandboxFileSystemBackend( | |
| 153 sandbox_delegate_.get())), | |
| 154 isolated_backend_(new IsolatedFileSystemBackend()), | |
| 155 plugin_private_backend_(new PluginPrivateFileSystemBackend( | |
| 156 file_task_runner, | |
| 157 partition_path, | |
| 158 special_storage_policy, | |
| 159 options)), | |
| 160 additional_backends_(additional_backends.Pass()), | |
| 161 auto_mount_handlers_(auto_mount_handlers), | |
| 162 external_mount_points_(external_mount_points), | |
| 163 partition_path_(partition_path), | |
| 164 is_incognito_(options.is_incognito()), | |
| 165 operation_runner_(new FileSystemOperationRunner(this)) { | |
| 166 RegisterBackend(sandbox_backend_.get()); | |
| 167 RegisterBackend(isolated_backend_.get()); | |
| 168 RegisterBackend(plugin_private_backend_.get()); | |
| 169 | |
| 170 for (ScopedVector<FileSystemBackend>::const_iterator iter = | |
| 171 additional_backends_.begin(); | |
| 172 iter != additional_backends_.end(); ++iter) { | |
| 173 RegisterBackend(*iter); | |
| 174 } | |
| 175 | |
| 176 if (quota_manager_proxy) { | |
| 177 // Quota client assumes all backends have registered. | |
| 178 quota_manager_proxy->RegisterClient(CreateQuotaClient( | |
| 179 this, options.is_incognito())); | |
| 180 } | |
| 181 | |
| 182 sandbox_backend_->Initialize(this); | |
| 183 isolated_backend_->Initialize(this); | |
| 184 plugin_private_backend_->Initialize(this); | |
| 185 for (ScopedVector<FileSystemBackend>::const_iterator iter = | |
| 186 additional_backends_.begin(); | |
| 187 iter != additional_backends_.end(); ++iter) { | |
| 188 (*iter)->Initialize(this); | |
| 189 } | |
| 190 | |
| 191 // Additional mount points must be added before regular system-wide | |
| 192 // mount points. | |
| 193 if (external_mount_points) | |
| 194 url_crackers_.push_back(external_mount_points); | |
| 195 url_crackers_.push_back(ExternalMountPoints::GetSystemInstance()); | |
| 196 url_crackers_.push_back(IsolatedContext::GetInstance()); | |
| 197 } | |
| 198 | |
| 199 bool FileSystemContext::DeleteDataForOriginOnFileTaskRunner( | |
| 200 const GURL& origin_url) { | |
| 201 DCHECK(default_file_task_runner()->RunsTasksOnCurrentThread()); | |
| 202 DCHECK(origin_url == origin_url.GetOrigin()); | |
| 203 | |
| 204 bool success = true; | |
| 205 for (FileSystemBackendMap::iterator iter = backend_map_.begin(); | |
| 206 iter != backend_map_.end(); | |
| 207 ++iter) { | |
| 208 FileSystemBackend* backend = iter->second; | |
| 209 if (!backend->GetQuotaUtil()) | |
| 210 continue; | |
| 211 if (backend->GetQuotaUtil()->DeleteOriginDataOnFileTaskRunner( | |
| 212 this, quota_manager_proxy(), origin_url, iter->first) | |
| 213 != base::File::FILE_OK) { | |
| 214 // Continue the loop, but record the failure. | |
| 215 success = false; | |
| 216 } | |
| 217 } | |
| 218 | |
| 219 return success; | |
| 220 } | |
| 221 | |
| 222 scoped_refptr<QuotaReservation> | |
| 223 FileSystemContext::CreateQuotaReservationOnFileTaskRunner( | |
| 224 const GURL& origin_url, | |
| 225 FileSystemType type) { | |
| 226 DCHECK(default_file_task_runner()->RunsTasksOnCurrentThread()); | |
| 227 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 228 if (!backend || !backend->GetQuotaUtil()) | |
| 229 return scoped_refptr<QuotaReservation>(); | |
| 230 return backend->GetQuotaUtil()->CreateQuotaReservationOnFileTaskRunner( | |
| 231 origin_url, type); | |
| 232 } | |
| 233 | |
| 234 void FileSystemContext::Shutdown() { | |
| 235 if (!io_task_runner_->RunsTasksOnCurrentThread()) { | |
| 236 io_task_runner_->PostTask( | |
| 237 FROM_HERE, base::Bind(&FileSystemContext::Shutdown, | |
| 238 make_scoped_refptr(this))); | |
| 239 return; | |
| 240 } | |
| 241 operation_runner_->Shutdown(); | |
| 242 } | |
| 243 | |
| 244 FileSystemQuotaUtil* | |
| 245 FileSystemContext::GetQuotaUtil(FileSystemType type) const { | |
| 246 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 247 if (!backend) | |
| 248 return NULL; | |
| 249 return backend->GetQuotaUtil(); | |
| 250 } | |
| 251 | |
| 252 AsyncFileUtil* FileSystemContext::GetAsyncFileUtil( | |
| 253 FileSystemType type) const { | |
| 254 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 255 if (!backend) | |
| 256 return NULL; | |
| 257 return backend->GetAsyncFileUtil(type); | |
| 258 } | |
| 259 | |
| 260 CopyOrMoveFileValidatorFactory* | |
| 261 FileSystemContext::GetCopyOrMoveFileValidatorFactory( | |
| 262 FileSystemType type, base::File::Error* error_code) const { | |
| 263 DCHECK(error_code); | |
| 264 *error_code = base::File::FILE_OK; | |
| 265 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 266 if (!backend) | |
| 267 return NULL; | |
| 268 return backend->GetCopyOrMoveFileValidatorFactory( | |
| 269 type, error_code); | |
| 270 } | |
| 271 | |
| 272 FileSystemBackend* FileSystemContext::GetFileSystemBackend( | |
| 273 FileSystemType type) const { | |
| 274 FileSystemBackendMap::const_iterator found = backend_map_.find(type); | |
| 275 if (found != backend_map_.end()) | |
| 276 return found->second; | |
| 277 NOTREACHED() << "Unknown filesystem type: " << type; | |
| 278 return NULL; | |
| 279 } | |
| 280 | |
| 281 bool FileSystemContext::IsSandboxFileSystem(FileSystemType type) const { | |
| 282 FileSystemBackendMap::const_iterator found = backend_map_.find(type); | |
| 283 return found != backend_map_.end() && found->second->GetQuotaUtil(); | |
| 284 } | |
| 285 | |
| 286 const UpdateObserverList* FileSystemContext::GetUpdateObservers( | |
| 287 FileSystemType type) const { | |
| 288 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 289 if (backend->GetQuotaUtil()) | |
| 290 return backend->GetQuotaUtil()->GetUpdateObservers(type); | |
| 291 return NULL; | |
| 292 } | |
| 293 | |
| 294 const AccessObserverList* FileSystemContext::GetAccessObservers( | |
| 295 FileSystemType type) const { | |
| 296 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 297 if (backend->GetQuotaUtil()) | |
| 298 return backend->GetQuotaUtil()->GetAccessObservers(type); | |
| 299 return NULL; | |
| 300 } | |
| 301 | |
| 302 void FileSystemContext::GetFileSystemTypes( | |
| 303 std::vector<FileSystemType>* types) const { | |
| 304 types->clear(); | |
| 305 for (FileSystemBackendMap::const_iterator iter = backend_map_.begin(); | |
| 306 iter != backend_map_.end(); ++iter) | |
| 307 types->push_back(iter->first); | |
| 308 } | |
| 309 | |
| 310 ExternalFileSystemBackend* | |
| 311 FileSystemContext::external_backend() const { | |
| 312 return static_cast<ExternalFileSystemBackend*>( | |
| 313 GetFileSystemBackend(kFileSystemTypeExternal)); | |
| 314 } | |
| 315 | |
| 316 void FileSystemContext::OpenFileSystem( | |
| 317 const GURL& origin_url, | |
| 318 FileSystemType type, | |
| 319 OpenFileSystemMode mode, | |
| 320 const OpenFileSystemCallback& callback) { | |
| 321 DCHECK(io_task_runner_->RunsTasksOnCurrentThread()); | |
| 322 DCHECK(!callback.is_null()); | |
| 323 | |
| 324 if (!FileSystemContext::IsSandboxFileSystem(type)) { | |
| 325 // Disallow opening a non-sandboxed filesystem. | |
| 326 callback.Run(GURL(), std::string(), base::File::FILE_ERROR_SECURITY); | |
| 327 return; | |
| 328 } | |
| 329 | |
| 330 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 331 if (!backend) { | |
| 332 callback.Run(GURL(), std::string(), base::File::FILE_ERROR_SECURITY); | |
| 333 return; | |
| 334 } | |
| 335 | |
| 336 backend->ResolveURL( | |
| 337 CreateCrackedFileSystemURL(origin_url, type, base::FilePath()), | |
| 338 mode, | |
| 339 callback); | |
| 340 } | |
| 341 | |
| 342 void FileSystemContext::ResolveURL( | |
| 343 const FileSystemURL& url, | |
| 344 const ResolveURLCallback& callback) { | |
| 345 DCHECK(!callback.is_null()); | |
| 346 | |
| 347 // If not on IO thread, forward before passing the task to the backend. | |
| 348 if (!io_task_runner_->RunsTasksOnCurrentThread()) { | |
| 349 ResolveURLCallback relay_callback = | |
| 350 base::Bind(&RelayResolveURLCallback, | |
| 351 base::MessageLoopProxy::current(), callback); | |
| 352 io_task_runner_->PostTask( | |
| 353 FROM_HERE, | |
| 354 base::Bind(&FileSystemContext::ResolveURL, this, url, relay_callback)); | |
| 355 return; | |
| 356 } | |
| 357 | |
| 358 FileSystemBackend* backend = GetFileSystemBackend(url.type()); | |
| 359 if (!backend) { | |
| 360 callback.Run(base::File::FILE_ERROR_SECURITY, | |
| 361 FileSystemInfo(), base::FilePath(), | |
| 362 FileSystemContext::RESOLVED_ENTRY_NOT_FOUND); | |
| 363 return; | |
| 364 } | |
| 365 | |
| 366 backend->ResolveURL( | |
| 367 url, | |
| 368 OPEN_FILE_SYSTEM_FAIL_IF_NONEXISTENT, | |
| 369 base::Bind(&FileSystemContext::DidOpenFileSystemForResolveURL, | |
| 370 this, | |
| 371 url, | |
| 372 callback)); | |
| 373 } | |
| 374 | |
| 375 void FileSystemContext::AttemptAutoMountForURLRequest( | |
| 376 const net::URLRequest* url_request, | |
| 377 const std::string& storage_domain, | |
| 378 const StatusCallback& callback) { | |
| 379 FileSystemURL filesystem_url(url_request->url()); | |
| 380 if (filesystem_url.type() == kFileSystemTypeExternal) { | |
| 381 for (size_t i = 0; i < auto_mount_handlers_.size(); i++) { | |
| 382 if (auto_mount_handlers_[i].Run(url_request, filesystem_url, | |
| 383 storage_domain, callback)) { | |
| 384 return; | |
| 385 } | |
| 386 } | |
| 387 } | |
| 388 callback.Run(base::File::FILE_ERROR_NOT_FOUND); | |
| 389 } | |
| 390 | |
| 391 void FileSystemContext::DeleteFileSystem( | |
| 392 const GURL& origin_url, | |
| 393 FileSystemType type, | |
| 394 const StatusCallback& callback) { | |
| 395 DCHECK(io_task_runner_->RunsTasksOnCurrentThread()); | |
| 396 DCHECK(origin_url == origin_url.GetOrigin()); | |
| 397 DCHECK(!callback.is_null()); | |
| 398 | |
| 399 FileSystemBackend* backend = GetFileSystemBackend(type); | |
| 400 if (!backend) { | |
| 401 callback.Run(base::File::FILE_ERROR_SECURITY); | |
| 402 return; | |
| 403 } | |
| 404 if (!backend->GetQuotaUtil()) { | |
| 405 callback.Run(base::File::FILE_ERROR_INVALID_OPERATION); | |
| 406 return; | |
| 407 } | |
| 408 | |
| 409 base::PostTaskAndReplyWithResult( | |
| 410 default_file_task_runner(), | |
| 411 FROM_HERE, | |
| 412 // It is safe to pass Unretained(quota_util) since context owns it. | |
| 413 base::Bind(&FileSystemQuotaUtil::DeleteOriginDataOnFileTaskRunner, | |
| 414 base::Unretained(backend->GetQuotaUtil()), | |
| 415 make_scoped_refptr(this), | |
| 416 base::Unretained(quota_manager_proxy()), | |
| 417 origin_url, | |
| 418 type), | |
| 419 callback); | |
| 420 } | |
| 421 | |
| 422 scoped_ptr<webkit_blob::FileStreamReader> | |
| 423 FileSystemContext::CreateFileStreamReader( | |
| 424 const FileSystemURL& url, | |
| 425 int64 offset, | |
| 426 const base::Time& expected_modification_time) { | |
| 427 if (!url.is_valid()) | |
| 428 return scoped_ptr<webkit_blob::FileStreamReader>(); | |
| 429 FileSystemBackend* backend = GetFileSystemBackend(url.type()); | |
| 430 if (!backend) | |
| 431 return scoped_ptr<webkit_blob::FileStreamReader>(); | |
| 432 return backend->CreateFileStreamReader( | |
| 433 url, offset, expected_modification_time, this); | |
| 434 } | |
| 435 | |
| 436 scoped_ptr<FileStreamWriter> FileSystemContext::CreateFileStreamWriter( | |
| 437 const FileSystemURL& url, | |
| 438 int64 offset) { | |
| 439 if (!url.is_valid()) | |
| 440 return scoped_ptr<FileStreamWriter>(); | |
| 441 FileSystemBackend* backend = GetFileSystemBackend(url.type()); | |
| 442 if (!backend) | |
| 443 return scoped_ptr<FileStreamWriter>(); | |
| 444 return backend->CreateFileStreamWriter(url, offset, this); | |
| 445 } | |
| 446 | |
| 447 scoped_ptr<FileSystemOperationRunner> | |
| 448 FileSystemContext::CreateFileSystemOperationRunner() { | |
| 449 return make_scoped_ptr(new FileSystemOperationRunner(this)); | |
| 450 } | |
| 451 | |
| 452 FileSystemURL FileSystemContext::CrackURL(const GURL& url) const { | |
| 453 return CrackFileSystemURL(FileSystemURL(url)); | |
| 454 } | |
| 455 | |
| 456 FileSystemURL FileSystemContext::CreateCrackedFileSystemURL( | |
| 457 const GURL& origin, | |
| 458 FileSystemType type, | |
| 459 const base::FilePath& path) const { | |
| 460 return CrackFileSystemURL(FileSystemURL(origin, type, path)); | |
| 461 } | |
| 462 | |
| 463 #if defined(OS_CHROMEOS) | |
| 464 void FileSystemContext::EnableTemporaryFileSystemInIncognito() { | |
| 465 sandbox_backend_->set_enable_temporary_file_system_in_incognito(true); | |
| 466 } | |
| 467 #endif | |
| 468 | |
| 469 bool FileSystemContext::CanServeURLRequest(const FileSystemURL& url) const { | |
| 470 // We never support accessing files in isolated filesystems via an URL. | |
| 471 if (url.mount_type() == kFileSystemTypeIsolated) | |
| 472 return false; | |
| 473 #if defined(OS_CHROMEOS) | |
| 474 if (url.type() == kFileSystemTypeTemporary && | |
| 475 sandbox_backend_->enable_temporary_file_system_in_incognito()) { | |
| 476 return true; | |
| 477 } | |
| 478 #endif | |
| 479 return !is_incognito_ || !FileSystemContext::IsSandboxFileSystem(url.type()); | |
| 480 } | |
| 481 | |
| 482 bool FileSystemContext::ShouldFlushOnWriteCompletion( | |
| 483 FileSystemType type) const { | |
| 484 if (IsSandboxFileSystem(type)) { | |
| 485 // Disable Flush() for each write operation on SandboxFileSystems since it | |
| 486 // hurts the performance, assuming the FileSystems are stored in a local | |
| 487 // disk, we don't need to keep calling fsync() for it. | |
| 488 // On the other hand, other FileSystems that may stored on a removable media | |
| 489 // should be Flush()ed as soon as a write operation is completed, so that | |
| 490 // written data is saved over sudden media removal. | |
| 491 return false; | |
| 492 } | |
| 493 return true; | |
| 494 } | |
| 495 | |
| 496 void FileSystemContext::OpenPluginPrivateFileSystem( | |
| 497 const GURL& origin_url, | |
| 498 FileSystemType type, | |
| 499 const std::string& filesystem_id, | |
| 500 const std::string& plugin_id, | |
| 501 OpenFileSystemMode mode, | |
| 502 const StatusCallback& callback) { | |
| 503 DCHECK(plugin_private_backend_); | |
| 504 plugin_private_backend_->OpenPrivateFileSystem( | |
| 505 origin_url, type, filesystem_id, plugin_id, mode, callback); | |
| 506 } | |
| 507 | |
| 508 FileSystemContext::~FileSystemContext() { | |
| 509 } | |
| 510 | |
| 511 void FileSystemContext::DeleteOnCorrectThread() const { | |
| 512 if (!io_task_runner_->RunsTasksOnCurrentThread() && | |
| 513 io_task_runner_->DeleteSoon(FROM_HERE, this)) { | |
| 514 return; | |
| 515 } | |
| 516 delete this; | |
| 517 } | |
| 518 | |
| 519 FileSystemOperation* FileSystemContext::CreateFileSystemOperation( | |
| 520 const FileSystemURL& url, base::File::Error* error_code) { | |
| 521 if (!url.is_valid()) { | |
| 522 if (error_code) | |
| 523 *error_code = base::File::FILE_ERROR_INVALID_URL; | |
| 524 return NULL; | |
| 525 } | |
| 526 | |
| 527 FileSystemBackend* backend = GetFileSystemBackend(url.type()); | |
| 528 if (!backend) { | |
| 529 if (error_code) | |
| 530 *error_code = base::File::FILE_ERROR_FAILED; | |
| 531 return NULL; | |
| 532 } | |
| 533 | |
| 534 base::File::Error fs_error = base::File::FILE_OK; | |
| 535 FileSystemOperation* operation = | |
| 536 backend->CreateFileSystemOperation(url, this, &fs_error); | |
| 537 | |
| 538 if (error_code) | |
| 539 *error_code = fs_error; | |
| 540 return operation; | |
| 541 } | |
| 542 | |
| 543 FileSystemURL FileSystemContext::CrackFileSystemURL( | |
| 544 const FileSystemURL& url) const { | |
| 545 if (!url.is_valid()) | |
| 546 return FileSystemURL(); | |
| 547 | |
| 548 // The returned value in case there is no crackers which can crack the url. | |
| 549 // This is valid situation for non isolated/external file systems. | |
| 550 FileSystemURL current = url; | |
| 551 | |
| 552 // File system may be mounted multiple times (e.g., an isolated filesystem on | |
| 553 // top of an external filesystem). Hence cracking needs to be iterated. | |
| 554 for (;;) { | |
| 555 FileSystemURL cracked = current; | |
| 556 for (size_t i = 0; i < url_crackers_.size(); ++i) { | |
| 557 if (!url_crackers_[i]->HandlesFileSystemMountType(current.type())) | |
| 558 continue; | |
| 559 cracked = url_crackers_[i]->CrackFileSystemURL(current); | |
| 560 if (cracked.is_valid()) | |
| 561 break; | |
| 562 } | |
| 563 if (cracked == current) | |
| 564 break; | |
| 565 current = cracked; | |
| 566 } | |
| 567 return current; | |
| 568 } | |
| 569 | |
| 570 void FileSystemContext::RegisterBackend(FileSystemBackend* backend) { | |
| 571 const FileSystemType mount_types[] = { | |
| 572 kFileSystemTypeTemporary, | |
| 573 kFileSystemTypePersistent, | |
| 574 kFileSystemTypeIsolated, | |
| 575 kFileSystemTypeExternal, | |
| 576 }; | |
| 577 // Register file system backends for public mount types. | |
| 578 for (size_t j = 0; j < ARRAYSIZE_UNSAFE(mount_types); ++j) { | |
| 579 if (backend->CanHandleType(mount_types[j])) { | |
| 580 const bool inserted = backend_map_.insert( | |
| 581 std::make_pair(mount_types[j], backend)).second; | |
| 582 DCHECK(inserted); | |
| 583 } | |
| 584 } | |
| 585 // Register file system backends for internal types. | |
| 586 for (int t = kFileSystemInternalTypeEnumStart + 1; | |
| 587 t < kFileSystemInternalTypeEnumEnd; ++t) { | |
| 588 FileSystemType type = static_cast<FileSystemType>(t); | |
| 589 if (backend->CanHandleType(type)) { | |
| 590 const bool inserted = backend_map_.insert( | |
| 591 std::make_pair(type, backend)).second; | |
| 592 DCHECK(inserted); | |
| 593 } | |
| 594 } | |
| 595 } | |
| 596 | |
| 597 void FileSystemContext::DidOpenFileSystemForResolveURL( | |
| 598 const FileSystemURL& url, | |
| 599 const FileSystemContext::ResolveURLCallback& callback, | |
| 600 const GURL& filesystem_root, | |
| 601 const std::string& filesystem_name, | |
| 602 base::File::Error error) { | |
| 603 DCHECK(io_task_runner_->RunsTasksOnCurrentThread()); | |
| 604 | |
| 605 if (error != base::File::FILE_OK) { | |
| 606 callback.Run(error, FileSystemInfo(), base::FilePath(), | |
| 607 FileSystemContext::RESOLVED_ENTRY_NOT_FOUND); | |
| 608 return; | |
| 609 } | |
| 610 | |
| 611 fileapi::FileSystemInfo info( | |
| 612 filesystem_name, filesystem_root, url.mount_type()); | |
| 613 | |
| 614 // Extract the virtual path not containing a filesystem type part from |url|. | |
| 615 base::FilePath parent = CrackURL(filesystem_root).virtual_path(); | |
| 616 base::FilePath child = url.virtual_path(); | |
| 617 base::FilePath path; | |
| 618 | |
| 619 if (parent.empty()) { | |
| 620 path = child; | |
| 621 } else if (parent != child) { | |
| 622 bool result = parent.AppendRelativePath(child, &path); | |
| 623 DCHECK(result); | |
| 624 } | |
| 625 | |
| 626 operation_runner()->GetMetadata( | |
| 627 url, base::Bind(&DidGetMetadataForResolveURL, path, callback, info)); | |
| 628 } | |
| 629 | |
| 630 } // namespace fileapi | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 442383002:
Move storage-related files from webkit/ to new top-level directory storage/ (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src