ladybird/Kernel/Storage/Partition/GUIDPartitionTable.h

/*
 * Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
 * 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
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 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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 */

#pragma once

#include <AK/RefPtr.h>
#include <AK/Result.h>
#include <AK/Types.h>
#include <AK/Vector.h>
#include <Kernel/Storage/Partition/MBRPartitionTable.h>

namespace Kernel {

struct GUIDPartitionHeader;
class GUIDPartitionTable final : public MBRPartitionTable {
public:
    virtual ~GUIDPartitionTable() {};

    static Result<NonnullOwnPtr<GUIDPartitionTable>, PartitionTable::Error> try_to_initialize(const StorageDevice&);
    explicit GUIDPartitionTable(const StorageDevice&);

    virtual Type type() const override { return Type::GPT; };
    virtual bool is_valid() const override { return m_valid; };

private:
    bool is_unused_entry(ByteBuffer) const;
    const GUIDPartitionHeader& header() const;
    bool initialize();

    bool m_valid { true };
    ByteBuffer m_cached_header;
};

}