70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
/*
|
|
* Copyright (C) 2009 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef _UTILS_BACKUP_HELPERS_H
|
|
#define _UTILS_BACKUP_HELPERS_H
|
|
|
|
#include <utils/Errors.h>
|
|
#include <utils/String8.h>
|
|
|
|
namespace android {
|
|
|
|
int back_up_files(int oldSnapshotFD, int oldDataStream, int newSnapshotFD,
|
|
char const* fileBase, char const* const* files, int fileCount);
|
|
|
|
/**
|
|
* Reads the data.
|
|
*
|
|
* If an error occurs, it poisons this object and all write calls will fail
|
|
* with the error that occurred.
|
|
*/
|
|
class BackupDataWriter
|
|
{
|
|
public:
|
|
BackupDataWriter(int fd);
|
|
// does not close fd
|
|
~BackupDataWriter();
|
|
|
|
status_t WriteAppHeader(const String8& packageName);
|
|
|
|
status_t WriteEntityHeader(const String8& key, size_t dataSize);
|
|
status_t WriteEntityData(const void* data, size_t size);
|
|
|
|
status_t WriteAppFooter();
|
|
|
|
private:
|
|
explicit BackupDataWriter();
|
|
status_t write_padding_for(int n);
|
|
|
|
int m_fd;
|
|
status_t m_status;
|
|
ssize_t m_pos;
|
|
int m_entityCount;
|
|
};
|
|
|
|
#define TEST_BACKUP_HELPERS 0
|
|
|
|
#if TEST_BACKUP_HELPERS
|
|
int backup_helper_test_empty();
|
|
int backup_helper_test_four();
|
|
int backup_helper_test_files();
|
|
int backup_helper_test_data_writer();
|
|
#endif
|
|
|
|
} // namespace android
|
|
|
|
#endif // _UTILS_BACKUP_HELPERS_H
|