ladybird/Kernel/FileSystem/ISO9660FS/FileSystem.h
Andreas Kling 673592dea8 Kernel: Stop using *LockRefPtr for FileSystem pointers
There was only one permanent storage location for these: as a member
in the Mount class.

That member is never modified after Mount initialization, so we don't
need to worry about races there.
2023-04-04 10:33:42 +02:00

68 lines
2.2 KiB
C++

/*
* Copyright (c) 2021, sin-ack <sin-ack@protonmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/EnumBits.h>
#include <AK/Error.h>
#include <AK/HashMap.h>
#include <AK/RecursionDecision.h>
#include <AK/StringView.h>
#include <AK/Types.h>
#include <Kernel/FileSystem/BlockBasedFileSystem.h>
#include <Kernel/FileSystem/ISO9660FS/Definitions.h>
#include <Kernel/FileSystem/ISO9660FS/DirectoryEntry.h>
#include <Kernel/FileSystem/Inode.h>
#include <Kernel/KBuffer.h>
#include <Kernel/Library/NonnullLockRefPtr.h>
namespace Kernel {
class ISO9660Inode;
class ISO9660DirectoryIterator;
class ISO9660FS final : public BlockBasedFileSystem {
friend ISO9660Inode;
friend ISO9660DirectoryIterator;
public:
static ErrorOr<NonnullRefPtr<FileSystem>> try_create(OpenFileDescription&);
virtual ~ISO9660FS() override;
virtual StringView class_name() const override { return "ISO9660FS"sv; }
virtual Inode& root_inode() override;
virtual unsigned total_block_count() const override;
virtual unsigned total_inode_count() const override;
virtual u8 internal_file_type_to_directory_entry_type(DirectoryEntryView const& entry) const override;
ErrorOr<NonnullLockRefPtr<ISO9660FSDirectoryEntry>> directory_entry_for_record(Badge<ISO9660DirectoryIterator>, ISO::DirectoryRecordHeader const* record);
private:
ISO9660FS(OpenFileDescription&);
virtual ErrorOr<void> prepare_to_clear_last_mount() override;
virtual bool is_initialized_while_locked() override;
virtual ErrorOr<void> initialize_while_locked() override;
ErrorOr<void> parse_volume_set();
ErrorOr<void> create_root_inode();
ErrorOr<void> calculate_inode_count() const;
u32 calculate_directory_entry_cache_key(ISO::DirectoryRecordHeader const&);
ErrorOr<void> visit_directory_record(ISO::DirectoryRecordHeader const& record, Function<ErrorOr<RecursionDecision>(ISO::DirectoryRecordHeader const*)> const& visitor) const;
OwnPtr<ISO::PrimaryVolumeDescriptor> m_primary_volume;
RefPtr<ISO9660Inode> m_root_inode;
mutable u32 m_cached_inode_count { 0 };
HashMap<u32, NonnullLockRefPtr<ISO9660FSDirectoryEntry>> m_directory_entry_cache;
};
}