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37 lines
1.1 KiB
37 lines
1.1 KiB
/*
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* Copyright (C) 2020 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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constexpr int SECTOR_SIZE_SHIFT = 9;
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constexpr int SECTOR_SIZE = 1 << SECTOR_SIZE_SHIFT;
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struct __attribute__((packed)) MbrPartitionEntry {
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std::uint8_t status;
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std::uint8_t begin_chs[3];
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std::uint8_t partition_type;
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std::uint8_t end_chs[3];
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std::uint32_t first_lba;
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std::uint32_t num_sectors;
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};
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struct __attribute__((packed)) MasterBootRecord {
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std::uint8_t bootstrap_code[446];
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MbrPartitionEntry partitions[4];
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std::uint8_t boot_signature[2];
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};
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static_assert(sizeof(MasterBootRecord) == SECTOR_SIZE);
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