6dd098cb1e
This commit constructs the super_vbmeta image to eliminate the need of adding /vbmeta_system and/or /vbmeta_vendor when AVB chain partition is used with Android Dynamic Partition. See BOARD_AVB_VBMETA_SYSTEM under the link: https://android.googlesource.com/platform/external/avb/#build-system-integration The structure of super_vbmeta : | VBMeta Table | (fixed-length 2KiB) | Backup VBMeta Table | (fixed-length 2KiB) | VBMeta Images | (fixed-length 64KiB each) The structure of VBMeta Table : | Super VBMeta Header | (fixed-length 128B) | VBMeta Descriptors | (variable-length) The VBMeta Table records the slot number of each vbmeta image within the /super_vbmeta partition. Bug: 137054296 Test: m libvbmeta_test Test: ./out/host/linux-x86/nativetest/libvbmeta_test/libvbmeta_test Change-Id: I01aeadd850750ae87d9125484c1b1f570bb84756
36 lines
No EOL
1.2 KiB
C++
36 lines
No EOL
1.2 KiB
C++
/*
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* Copyright (C) 2019 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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#pragma once
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#include <string>
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#include <android-base/result.h>
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#include "super_vbmeta_format.h"
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namespace android {
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namespace fs_mgr {
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std::string SerializeVBMetaTable(const VBMetaTable& input);
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android::base::Result<void> WritePrimaryVBMetaTable(int fd, const std::string& table);
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android::base::Result<void> WriteBackupVBMetaTable(int fd, const std::string& table);
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android::base::Result<void> WriteVBMetaImage(int fd, const uint8_t slot_number,
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const std::string& vbmeta_image);
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} // namespace fs_mgr
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} // namespace android
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