70 lines
1.4 KiB
C++
70 lines
1.4 KiB
C++
#ifndef __BLOCKDEVICE_H__
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#define __BLOCKDEVICE_H__
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#include <stdint.h>
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#include <sys/types.h>
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#include <Device/Device.h>
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#include <Device/TrackSector.h>
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#include <Common/Exception.h>
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#include <Common/smart_pointers.h>
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#include <File/File.h>
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class MappedFile;
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namespace Device {
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class BlockDevice : public ENABLE_SHARED_FROM_THIS(BlockDevice) {
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public:
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// static methods.
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static unsigned ImageType(const char *type, unsigned defv = 0);
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static unsigned ImageType(MappedFile *, unsigned defv = 0);
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static BlockDevicePointer Open(const char *name, File::FileFlags flags, unsigned imageType = 0);
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static BlockDevicePointer Create(const char *fname, const char *vname, unsigned blocks, unsigned imageType = 0);
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virtual ~BlockDevice();
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virtual BlockCachePointer createBlockCache();
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virtual void read(unsigned block, void *bp) = 0;
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//virtual void read(TrackSector ts, void *bp) = 0
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virtual void write(unsigned block, const void *bp) = 0;
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//virtual void write(TrackSector ts, const void *bp) = 0;
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virtual unsigned blocks() = 0;
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virtual bool mapped();
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virtual bool readOnly() = 0;
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virtual void sync() = 0;
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virtual void sync(unsigned block);
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//virtual void sync(TrackSector ts);
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void zeroBlock(unsigned block);
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protected:
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BlockDevice();
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};
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}
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#endif
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