ee4075d84d
This change enables reading metadata images from memory, for situations where using file descriptors is not practical (such as fastbootd flash). Bug: 78793464 Test: liblp_test gtest Change-Id: I9ad08b0ddd4cbb96e87583237a90785e0f4befa4
49 lines
1.8 KiB
C++
49 lines
1.8 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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#ifndef LIBLP_READER_H_
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#define LIBLP_READER_H_
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#include <stddef.h>
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#include <memory>
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#include <liblp/liblp.h>
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namespace android {
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namespace fs_mgr {
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// Parse an LpMetadataGeometry from a buffer. The buffer must be at least
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// LP_METADATA_GEOMETRY_SIZE bytes in size.
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bool ParseGeometry(const void* buffer, LpMetadataGeometry* geometry);
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// Helper functions for manually reading geometry and metadata.
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std::unique_ptr<LpMetadata> ReadMetadata(int fd, uint32_t slot_number);
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std::unique_ptr<LpMetadata> ParseMetadata(const LpMetadataGeometry& geometry, int fd);
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std::unique_ptr<LpMetadata> ParseMetadata(const LpMetadataGeometry& geometry, const void* buffer,
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size_t size);
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bool ReadLogicalPartitionGeometry(int fd, LpMetadataGeometry* geometry);
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// These functions assume a valid geometry and slot number.
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std::unique_ptr<LpMetadata> ReadPrimaryMetadata(int fd, const LpMetadataGeometry& geometry,
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uint32_t slot_number);
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std::unique_ptr<LpMetadata> ReadBackupMetadata(int fd, const LpMetadataGeometry& geometry,
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uint32_t slot_number);
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} // namespace fs_mgr
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} // namespace android
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#endif /* LIBLP_READER_H_ */
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