119 lines
2.3 KiB
C++
119 lines
2.3 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 <ProFUSE/Exception.h>
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#include <Device/TrackSector.h>
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namespace Device {
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class MappedFile;
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class AbstractBlockCache;
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class BlockDevice {
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public:
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virtual ~BlockDevice();
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virtual void read(unsigned block, void *bp) = 0;
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virtual void read(TrackSector ts, void *bp);
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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);
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// direct access to mapped memory (not always possible).
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virtual void *read(unsigned block);
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virtual void *read(TrackSector ts);
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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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AbstractBlockCache *blockCache();
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protected:
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BlockDevice();
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virtual AbstractBlockCache *createBlockCache();
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private:
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AbstractBlockCache *_cache;
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};
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class DiskImage : public BlockDevice {
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public:
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static unsigned ImageType(const char *type, unsigned defv = 0);
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virtual ~DiskImage();
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virtual void read(unsigned block, void *bp);
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virtual void write(unsigned block, const void *bp);
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virtual void sync();
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virtual bool readOnly();
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virtual unsigned blocks();
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protected:
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virtual AbstractBlockCache *createBlockCache();
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DiskImage(MappedFile * = 0);
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DiskImage(const char *name, bool readOnly);
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MappedFile *file() { return _file; }
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void setFile(MappedFile *);
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private:
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MappedFile *_file;
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};
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class ProDOSOrderDiskImage : public DiskImage {
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public:
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ProDOSOrderDiskImage(const char *name, bool readOnly);
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static ProDOSOrderDiskImage *Create(const char *name, size_t blocks);
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static ProDOSOrderDiskImage *Open(MappedFile *);
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private:
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ProDOSOrderDiskImage(MappedFile *);
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static void Validate(MappedFile *);
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};
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class DOSOrderDiskImage : public DiskImage {
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public:
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DOSOrderDiskImage(const char *name, bool readOnly);
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static DOSOrderDiskImage *Create(const char *name, size_t blocks);
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static DOSOrderDiskImage *Open(MappedFile *);
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private:
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DOSOrderDiskImage(MappedFile *);
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static void Validate(MappedFile *);
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};
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}
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#endif |