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/*
* Copyright (c) 2020-2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Error.h>
#include <LibPartition/PartitionTable.h>
namespace Partition {
class MBRPartitionTable : public PartitionTable {
public:
struct [[gnu::packed]] Entry {
u8 status;
u8 chs1[3];
u8 type;
u8 chs2[3];
u32 offset;
u32 length;
};
struct [[gnu::packed]] Header {
u8 code1[218];
u16 ts_zero;
u8 ts_drive;
u8 ts_seconds;
u8 ts_minutes;
u8 ts_hours;
u8 code2[216];
u32 disk_signature;
u16 disk_signature_zero;
Entry entry[4];
u16 mbr_signature;
};
public:
~MBRPartitionTable();
#ifdef KERNEL
static ErrorOr<NonnullOwnPtr<MBRPartitionTable>> try_to_initialize(Kernel::StorageDevice const&);
static OwnPtr<MBRPartitionTable> try_to_initialize(Kernel::StorageDevice const&, u32 start_lba);
explicit MBRPartitionTable(Kernel::StorageDevice const&);
MBRPartitionTable(Kernel::StorageDevice const&, u32 start_lba);
#else
static ErrorOr<NonnullOwnPtr<MBRPartitionTable>> try_to_initialize(NonnullRefPtr<Core::DeprecatedFile>);
static OwnPtr<MBRPartitionTable> try_to_initialize(NonnullRefPtr<Core::DeprecatedFile>, u32 start_lba);
explicit MBRPartitionTable(NonnullRefPtr<Core::DeprecatedFile>);
MBRPartitionTable(NonnullRefPtr<Core::DeprecatedFile>, u32 start_lba);
#endif
bool is_protective_mbr() const;
bool contains_ebr() const;
virtual bool is_valid() const override { return m_valid; };
protected:
Header const& header() const;
bool is_header_valid() const { return m_header_valid; };
private:
bool read_boot_record();
bool initialize();
bool m_valid { false };
bool m_header_valid { false };
const u32 m_start_lba;
ByteBuffer m_cached_header;
};
}
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