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/*
* 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
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