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| author | kinuko@chromium.org <kinuko@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-05-21 05:15:26 +0000 |
|---|---|---|
| committer | kinuko@chromium.org <kinuko@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2013-05-21 05:15:26 +0000 |
| commit | 28f051c316b821ea200d82a1ce42f7c672c41933 (patch) | |
| tree | a461d5a14b79d667cad2b11b14320424b00704a1 /webkit/browser/fileapi/sandbox_directory_database.h | |
| parent | 952ce9c3af14a489e2ccd575ffa61f18f636232b (diff) | |
| download | chromium_src-28f051c316b821ea200d82a1ce42f7c672c41933.zip chromium_src-28f051c316b821ea200d82a1ce42f7c672c41933.tar.gz chromium_src-28f051c316b821ea200d82a1ce42f7c672c41933.tar.bz2 | |
Move FileAPI sandboxed filesystem related code from webkit/fileapi to webkit/browser/fileapi
This moves following files from webkit/fileapi to webkit/browser/fileapi:
- obfuscated_file_util*
- sandbox_database_test_helper*
- sandbox_directory_database*
- sandbox_file_stream_writer*
- sandbox_mount_point_provider*
- sandbox_origin_database*
- sandbox_quota_observer*
BUG=239710
TBR=avi@chromium.org, calvinlo@chromium.org, thestig@chromium.org, tzik@chromium.org
Review URL: https://codereview.chromium.org/15442002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@201229 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'webkit/browser/fileapi/sandbox_directory_database.h')
| -rw-r--r-- | webkit/browser/fileapi/sandbox_directory_database.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/webkit/browser/fileapi/sandbox_directory_database.h b/webkit/browser/fileapi/sandbox_directory_database.h new file mode 100644 index 0000000..c16c90d --- /dev/null +++ b/webkit/browser/fileapi/sandbox_directory_database.h @@ -0,0 +1,124 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef WEBKIT_BROWSER_FILEAPI_SANDBOX_DIRECTORY_DATABASE_H_ +#define WEBKIT_BROWSER_FILEAPI_SANDBOX_DIRECTORY_DATABASE_H_ + +#include <string> +#include <vector> + +#include "base/files/file_path.h" +#include "base/memory/scoped_ptr.h" +#include "base/time.h" +#include "webkit/storage/webkit_storage_export.h" + +namespace tracked_objects { +class Location; +} + +namespace leveldb { +class DB; +class Status; +class WriteBatch; +} + +namespace fileapi { + +// This class WILL NOT protect you against producing directory loops, giving an +// empty directory a backing data file, giving two files the same backing file, +// or pointing to a nonexistent backing file. It does no file IO other than +// that involved with talking to its underlying database. It does not create or +// in any way touch real files; it only creates path entries in its database. + +// TODO(ericu): Safe mode, which does more checks such as the above on debug +// builds. +// TODO(ericu): Add a method that will give a unique filename for a data file. +class WEBKIT_STORAGE_EXPORT_PRIVATE SandboxDirectoryDatabase { + public: + typedef int64 FileId; + + struct WEBKIT_STORAGE_EXPORT_PRIVATE FileInfo { + FileInfo(); + ~FileInfo(); + + bool is_directory() const { + return data_path.empty(); + } + + FileId parent_id; + base::FilePath data_path; + base::FilePath::StringType name; + // This modification time is valid only for directories, not files, as + // FileWriter will get the files out of sync. + // For files, look at the modification time of the underlying data_path. + base::Time modification_time; + }; + + explicit SandboxDirectoryDatabase( + const base::FilePath& filesystem_data_directory); + ~SandboxDirectoryDatabase(); + + bool GetChildWithName( + FileId parent_id, + const base::FilePath::StringType& name, + FileId* child_id); + bool GetFileWithPath(const base::FilePath& path, FileId* file_id); + // ListChildren will succeed, returning 0 children, if parent_id doesn't + // exist. + bool ListChildren(FileId parent_id, std::vector<FileId>* children); + bool GetFileInfo(FileId file_id, FileInfo* info); + bool AddFileInfo(const FileInfo& info, FileId* file_id); + bool RemoveFileInfo(FileId file_id); + // This does a full update of the FileInfo, and is what you'd use for moves + // and renames. If you just want to update the modification_time, use + // UpdateModificationTime. + bool UpdateFileInfo(FileId file_id, const FileInfo& info); + bool UpdateModificationTime( + FileId file_id, const base::Time& modification_time); + // This is used for an overwriting move of a file [not a directory] on top of + // another file [also not a directory]; we need to alter two files' info in a + // single transaction to avoid weird backing file references in the event of a + // partial failure. + bool OverwritingMoveFile(FileId src_file_id, FileId dest_file_id); + + // This produces the series 0, 1, 2..., starting at 0 when the underlying + // filesystem is first created, and maintaining state across + // creation/destruction of SandboxDirectoryDatabase objects. + bool GetNextInteger(int64* next); + + // Returns true if the database looks consistent with local filesystem. + bool IsFileSystemConsistent(); + + static bool DestroyDatabase(const base::FilePath& path); + + private: + enum RecoveryOption { + DELETE_ON_CORRUPTION, + REPAIR_ON_CORRUPTION, + FAIL_ON_CORRUPTION, + }; + + friend class SandboxDirectoryDatabaseTest; + + bool Init(RecoveryOption recovery_option); + bool RepairDatabase(const std::string& db_path); + void ReportInitStatus(const leveldb::Status& status); + bool StoreDefaultValues(); + bool GetLastFileId(FileId* file_id); + bool VerifyIsDirectory(FileId file_id); + bool AddFileInfoHelper( + const FileInfo& info, FileId file_id, leveldb::WriteBatch* batch); + bool RemoveFileInfoHelper(FileId file_id, leveldb::WriteBatch* batch); + void HandleError(const tracked_objects::Location& from_here, + const leveldb::Status& status); + + const base::FilePath filesystem_data_directory_; + scoped_ptr<leveldb::DB> db_; + base::Time last_reported_time_; + DISALLOW_COPY_AND_ASSIGN(SandboxDirectoryDatabase); +}; + +} // namespace fileapi + +#endif // WEBKIT_BROWSER_FILEAPI_SANDBOX_DIRECTORY_DATABASE_H_ |