ladybird/Kernel/Devices/FileBackedDiskDevice.h
Andreas Kling 27f699ef0c AK: Rename the common integer typedefs to make it obvious what they are.
These types can be picked up by including <AK/Types.h>:

* u8, u16, u32, u64 (unsigned)
* i8, i16, i32, i64 (signed)
2019-07-03 21:20:13 +02:00

33 lines
972 B
C++

#pragma once
#include <AK/AKString.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
#include <Kernel/Devices/DiskDevice.h>
#include <stdio.h>
class FileBackedDiskDevice final : public DiskDevice {
public:
static RefPtr<FileBackedDiskDevice> create(String&& image_path, unsigned block_size);
virtual ~FileBackedDiskDevice() override;
bool is_valid() const { return m_file; }
virtual unsigned block_size() const override;
virtual bool read_block(unsigned index, u8* out) const override;
virtual bool write_block(unsigned index, const u8*) override;
private:
virtual const char* class_name() const override;
bool read_internal(DiskOffset, unsigned length, u8* out) const;
bool write_internal(DiskOffset, unsigned length, const u8* data);
FileBackedDiskDevice(String&& imagePath, unsigned block_size);
String m_image_path;
FILE* m_file { nullptr };
DiskOffset m_file_length { 0 };
unsigned m_block_size { 0 };
};