chromium/storage/browser/file_system/file_system_backend.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef STORAGE_BROWSER_FILE_SYSTEM_FILE_SYSTEM_BACKEND_H_
#define STORAGE_BROWSER_FILE_SYSTEM_FILE_SYSTEM_BACKEND_H_

#include <stdint.h>

#include <limits>
#include <memory>
#include <string>
#include <vector>

#include "base/component_export.h"
#include "base/files/file.h"
#include "base/files/file_path.h"
#include "base/functional/callback_forward.h"
#include "components/file_access/scoped_file_access_delegate.h"
#include "storage/browser/file_system/file_permission_policy.h"
#include "storage/browser/file_system/file_stream_reader.h"
#include "storage/browser/file_system/open_file_system_mode.h"
#include "storage/browser/file_system/task_runner_bound_observer_list.h"
#include "storage/common/file_system/file_system_types.h"
#include "url/origin.h"

class GURL;

namespace storage {

class AsyncFileUtil;
class CopyOrMoveFileValidatorFactory;
class FileSystemURL;
class FileStreamReader;
class FileStreamWriter;
class FileSystemContext;
class FileSystemOperation;
class FileSystemQuotaUtil;
class WatcherManager;

enum class OperationType;

// Callback to take GURL.
URLCallback;

// Maximum numer of bytes to be read by FileStreamReader classes. Used in
// FileSystemBackend::CreateFileStreamReader(), when it's not known how many
// bytes will be fetched in total.
const int64_t kMaximumLength = …;

// An interface for defining a file system backend.
//
// NOTE: when you implement a new FileSystemBackend for your own
// FileSystem module, please contact to [email protected].
//
class COMPONENT_EXPORT(STORAGE_BROWSER) FileSystemBackend { … };

}  // namespace storage

#endif  // STORAGE_BROWSER_FILE_SYSTEM_FILE_SYSTEM_BACKEND_H_