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/*
* Copyright (C) 2018 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.
*/
#include <stdint.h>
#include <map>
#include <memory>
#include <string>
#include <android-base/unique_fd.h>
#include <liblp/liblp.h>
#include <sparse/sparse.h>
namespace android {
namespace fs_mgr {
// Helper function to serialize geometry and metadata to a normal file, for
// flashing or debugging.
std::unique_ptr<LpMetadata> ReadFromImageFile(int fd);
// We use an object to build the image file since it requires that data
// pointers be held alive until the sparse file is destroyed. It's easier
// to do this when the data pointers are all in one place.
class ImageBuilder {
public:
ImageBuilder(const LpMetadata& metadata, uint32_t block_size,
const std::map<std::string, std::string>& images, bool sparsify);
bool Build();
bool Export(const std::string& file);
bool ExportFiles(const std::string& dir);
bool IsValid() const;
using SparsePtr = std::unique_ptr<sparse_file, decltype(&sparse_file_destroy)>;
const std::vector<SparsePtr>& device_images() const { return device_images_; }
private:
bool AddData(sparse_file* file, const std::string& blob, uint64_t sector);
bool AddPartitionImage(const LpMetadataPartition& partition, const std::string& file);
int OpenImageFile(const std::string& file);
bool SectorToBlock(uint64_t sector, uint32_t* block);
uint64_t BlockToSector(uint64_t block) const;
bool CheckExtentOrdering();
uint64_t ComputePartitionSize(const LpMetadataPartition& partition) const;
const LpMetadata& metadata_;
const LpMetadataGeometry& geometry_;
uint32_t block_size_;
bool sparsify_;
std::vector<SparsePtr> device_images_;
std::string all_metadata_;
std::map<std::string, std::string> images_;
std::vector<android::base::unique_fd> temp_fds_;
};
} // namespace fs_mgr
} // namespace android
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