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/*
* Copyright (c) 2022, Undefine <undefine@undefine.pl>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/FileSystem/BlockBasedFileSystem.h>
#include <Kernel/FileSystem/FATFS/Definitions.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/Forward.h>
#include <Kernel/KBuffer.h>
namespace Kernel {
class FATFS final : public BlockBasedFileSystem {
friend FATInode;
public:
static ErrorOr<NonnullLockRefPtr<FileSystem>> try_create(OpenFileDescription&);
virtual ~FATFS() override = default;
virtual StringView class_name() const override { return "FATFS"sv; }
virtual Inode& root_inode() override;
private:
virtual ErrorOr<void> initialize_while_locked() override;
virtual bool is_initialized_while_locked() override;
// FIXME: This is not a proper way to clear last mount of a FAT filesystem,
// but for now we simply have no other way to properly do it.
virtual ErrorOr<void> prepare_to_clear_last_mount() override { return {}; }
FATFS(OpenFileDescription&);
static constexpr u8 signature_1 = 0x28;
static constexpr u8 signature_2 = 0x29;
static constexpr u32 first_data_cluster = 2;
FAT32BootRecord const* boot_record() const { return reinterpret_cast<FAT32BootRecord const*>(m_boot_record->data()); };
BlockBasedFileSystem::BlockIndex first_block_of_cluster(u32 cluster) const;
OwnPtr<KBuffer> m_boot_record {};
LockRefPtr<FATInode> m_root_inode {};
u32 m_first_data_sector { 0 };
};
}
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