71 lines
2.4 KiB
C++
71 lines
2.4 KiB
C++
/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdint.h>
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#include <map>
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#include <memory>
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#include <string>
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#include <android-base/unique_fd.h>
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#include <liblp/liblp.h>
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#include <sparse/sparse.h>
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namespace android {
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namespace fs_mgr {
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// Helper function to serialize geometry and metadata to a normal file, for
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// flashing or debugging.
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std::unique_ptr<LpMetadata> ReadFromImageFile(int fd);
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// We use an object to build the image file since it requires that data
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// pointers be held alive until the sparse file is destroyed. It's easier
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// to do this when the data pointers are all in one place.
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class ImageBuilder {
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public:
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ImageBuilder(const LpMetadata& metadata, uint32_t block_size,
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const std::map<std::string, std::string>& images, bool sparsify);
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bool Build();
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bool Export(const std::string& file);
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bool ExportFiles(const std::string& dir);
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bool IsValid() const;
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using SparsePtr = std::unique_ptr<sparse_file, decltype(&sparse_file_destroy)>;
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const std::vector<SparsePtr>& device_images() const { return device_images_; }
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private:
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bool AddData(sparse_file* file, const std::string& blob, uint64_t sector);
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bool AddPartitionImage(const LpMetadataPartition& partition, const std::string& file);
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int OpenImageFile(const std::string& file);
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bool SectorToBlock(uint64_t sector, uint32_t* block);
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uint64_t BlockToSector(uint64_t block) const;
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bool CheckExtentOrdering();
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uint64_t ComputePartitionSize(const LpMetadataPartition& partition) const;
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const LpMetadata& metadata_;
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const LpMetadataGeometry& geometry_;
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uint32_t block_size_;
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bool sparsify_;
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std::vector<SparsePtr> device_images_;
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std::string all_metadata_;
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std::map<std::string, std::string> images_;
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std::vector<android::base::unique_fd> temp_fds_;
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};
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} // namespace fs_mgr
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} // namespace android
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