mirror of
https://github.com/RGBCube/serenity
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94ca55cefd
As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
85 lines
2.5 KiB
C++
85 lines
2.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/RefPtr.h>
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#include <AK/Vector.h>
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#include <Kernel/Devices/DiskDevice.h>
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#include <Kernel/Devices/DiskPartition.h>
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#define GPT_SIGNATURE2 0x54524150
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#define GPT_SIGNATURE 0x20494645
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#define BytesPerSector 512
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struct GPTPartitionEntry {
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u32 partition_guid[4];
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u32 unique_guid[4];
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u32 first_lba[2];
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u32 last_lba[2];
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u64 attributes;
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u8 partition_name[72];
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} __attribute__((packed));
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struct GPTPartitionHeader {
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u32 sig[2];
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u32 revision;
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u32 header_size;
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u32 crc32_header;
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u32 reserved;
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u64 current_lba;
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u64 backup_lba;
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u64 first_usable_lba;
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u64 last_usable_lba;
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u64 disk_guid1[2];
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u64 partition_array_start_lba;
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u32 entries_count;
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u32 partition_entry_size;
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u32 crc32_entries_array;
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} __attribute__((packed));
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class GPTPartitionTable {
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public:
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explicit GPTPartitionTable(DiskDevice&);
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~GPTPartitionTable();
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bool initialize();
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RefPtr<DiskPartition> partition(unsigned index);
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private:
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NonnullRefPtr<DiskDevice> m_device;
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const GPTPartitionHeader& header() const;
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u8 m_cached_header[512];
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};
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