168 lines
3.2 KiB
C++
168 lines
3.2 KiB
C++
#include "BlockDevice.h"
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#include "Exception.h"
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#include "MappedFile.h"
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#include <cerrno>
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#include <cstdlib>
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#include <cstring>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/mman.h>
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using namespace ProFUSE;
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BlockDevice::~BlockDevice()
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{
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}
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#pragma mark DiskImage
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DiskImage::DiskImage(const char *name, bool readOnly) :
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_file(NULL)
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{
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_file = new MappedFile(name, readOnly);
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}
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DiskImage::DiskImage(MappedFile *file) :
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_file(file)
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{
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}
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DiskImage::~DiskImage()
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{
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delete _file;
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}
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bool DiskImage::readOnly()
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{
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#undef __METHOD__
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#define __METHOD__ "DiskImage::readOnly"
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if (_file) return _file->readOnly();
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throw Exception(__METHOD__ ": File not set.");
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}
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void DiskImage::read(unsigned block, void *bp)
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{
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#undef __METHOD__
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#define __METHOD__ "DiskImage::read"
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if (_file) return _file->readBlock(block, bp);
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throw Exception(__METHOD__ ": File not set.");
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}
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void DiskImage::write(unsigned block, const void *bp)
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{
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#undef __METHOD__
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#define __METHOD__ "DiskImage::write"
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if (_file) return _file->writeBlock(block, bp);
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throw Exception(__METHOD__ ": File not set.");
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}
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void DiskImage::sync()
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{
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#undef __METHOD__
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#define __METHOD__ "DiskImage::sync"
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if (_file) return _file->sync();
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throw Exception(__METHOD__ ": File not set.");
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}
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ProDOSOrderDiskImage::ProDOSOrderDiskImage(const char *name, bool readOnly) :
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DiskImage(name, readOnly)
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{
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Validate(file());
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}
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ProDOSOrderDiskImage::ProDOSOrderDiskImage(MappedFile *file) :
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DiskImage(file)
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{
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}
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ProDOSOrderDiskImage *ProDOSOrderDiskImage::Create(const char *name, size_t blocks)
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{
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MappedFile *file = new MappedFile(name, blocks * 512);
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return new ProDOSOrderDiskImage(file);
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}
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ProDOSOrderDiskImage *ProDOSOrderDiskImage::Open(MappedFile *file)
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{
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Validate(file);
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return new ProDOSOrderDiskImage(file);
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}
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void ProDOSOrderDiskImage::Validate(MappedFile *f)
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{
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#undef __METHOD__
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#define __METHOD__ "ProDOSOrderDiskImage::Validate"
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if (!f) throw Exception(__METHOD__ ": File not set.");
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size_t size = f->fileSize();
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if (size % 512)
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throw Exception(__METHOD__ ": Invalid file format.");
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f->reset();
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f->setBlocks(size / 512);
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}
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DOSOrderDiskImage::DOSOrderDiskImage(const char *name, bool readOnly) :
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DiskImage(name, readOnly)
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{
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Validate(file());
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}
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DOSOrderDiskImage::DOSOrderDiskImage(MappedFile *file) :
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DiskImage(file)
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{
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}
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DOSOrderDiskImage *DOSOrderDiskImage::Create(const char *name, size_t blocks)
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{
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MappedFile *file = new MappedFile(name, blocks * 512);
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file->setDosOrder(true);
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return new DOSOrderDiskImage(file);
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}
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DOSOrderDiskImage *DOSOrderDiskImage::Open(MappedFile *file)
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{
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Validate(file);
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return new DOSOrderDiskImage(file);
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}
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void DOSOrderDiskImage::Validate(MappedFile *f)
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{
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#undef __METHOD__
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#define __METHOD__ "DOSOrderDiskImage::Validate"
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if (!f) throw Exception(__METHOD__ ": File not set.");
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size_t size = f->fileSize();
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if (size % 512)
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throw Exception(__METHOD__ ": Invalid file format.");
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f->reset();
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f->setDosOrder(true);
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f->setBlocks(size / 512);
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}
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