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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <AK/Vector.h>
#include <Kernel/Devices/DiskPartition.h>
namespace Kernel {
#define GPT_SIGNATURE2 0x54524150
#define GPT_SIGNATURE 0x20494645
#define BytesPerSector 512
struct [[gnu::packed]] GPTPartitionEntry
{
u32 partition_guid[4];
u32 unique_guid[4];
u32 first_lba[2];
u32 last_lba[2];
u64 attributes;
u8 partition_name[72];
};
struct [[gnu::packed]] GPTPartitionHeader
{
u32 sig[2];
u32 revision;
u32 header_size;
u32 crc32_header;
u32 reserved;
u64 current_lba;
u64 backup_lba;
u64 first_usable_lba;
u64 last_usable_lba;
u64 disk_guid1[2];
u64 partition_array_start_lba;
u32 entries_count;
u32 partition_entry_size;
u32 crc32_entries_array;
};
class GPTPartitionTable {
public:
explicit GPTPartitionTable(BlockDevice&);
~GPTPartitionTable();
bool initialize();
RefPtr<DiskPartition> partition(unsigned index);
private:
NonnullRefPtr<BlockDevice> m_device;
const GPTPartitionHeader& header() const;
u8 m_cached_header[512];
};
}
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