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