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28 lines
713 B
C++
28 lines
713 B
C++
#pragma once
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#include "FileSystem.h"
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#include <AK/ByteBuffer.h>
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class DiskBackedFS : public FS {
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public:
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virtual ~DiskBackedFS() override;
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DiskDevice& device() { return *m_device; }
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const DiskDevice& device() const { return *m_device; }
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virtual void flush_writes() override;
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protected:
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explicit DiskBackedFS(NonnullRefPtr<DiskDevice>&&);
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ByteBuffer read_block(unsigned index) const;
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ByteBuffer read_blocks(unsigned index, unsigned count) const;
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bool write_block(unsigned index, const ByteBuffer&);
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bool write_blocks(unsigned index, unsigned count, const ByteBuffer&);
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private:
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NonnullRefPtr<DiskDevice> m_device;
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HashMap<unsigned, ByteBuffer> m_write_cache;
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};
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