mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-28 13:43:45 +03:00
77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/*
|
|
* 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/Vector.h>
|
|
#include <Kernel/Devices/DiskDevice.h>
|
|
#include <Kernel/Devices/DiskPartition.h>
|
|
|
|
#define MBR_SIGNATURE 0xaa55
|
|
#define MBR_PROTECTIVE 0xEE
|
|
|
|
struct [[gnu::packed]] MBRPartitionEntry
|
|
{
|
|
u8 status;
|
|
u8 chs1[3];
|
|
u8 type;
|
|
u8 chs2[3];
|
|
u32 offset;
|
|
u32 length;
|
|
};
|
|
|
|
struct [[gnu::packed]] MBRPartitionHeader
|
|
{
|
|
u8 code1[218];
|
|
u16 ts_zero;
|
|
u8 ts_drive, ts_seconds, ts_minutes, ts_hours;
|
|
u8 code2[216];
|
|
u32 disk_signature;
|
|
u16 disk_signature_zero;
|
|
MBRPartitionEntry entry[4];
|
|
u16 mbr_signature;
|
|
};
|
|
|
|
class MBRPartitionTable {
|
|
AK_MAKE_ETERNAL
|
|
|
|
public:
|
|
MBRPartitionTable(NonnullRefPtr<DiskDevice>);
|
|
~MBRPartitionTable();
|
|
|
|
bool initialize();
|
|
bool is_protective_mbr() const;
|
|
RefPtr<DiskPartition> partition(unsigned index);
|
|
|
|
private:
|
|
NonnullRefPtr<DiskDevice> m_device;
|
|
|
|
const MBRPartitionHeader& header() const;
|
|
|
|
u8 m_cached_header[512];
|
|
};
|