mirror of https://github.com/vivier/EMILE.git
44 lines
842 B
C
44 lines
842 B
C
/*
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*
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* (c) 2005 Laurent Vivier <Laurent@Vivier.EU>
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*
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*/
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#include <sys/types.h>
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#include <string.h>
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#include <macos/devices.h>
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#include "libfloppy.h"
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/* offset is a block number
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* size is the number of bytes to read
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*/
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int floppy_read_sector(floppy_device_t *device,
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off_t offset, void* buffer, size_t size)
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{
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OSErr err;
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ParamBlockRec_t param_block;
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/* check size to read is multiple of sector size */
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if (size & (SECTOR_SIZE - 1))
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return -1;
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memset(¶m_block, 0, sizeof(param_block));
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param_block.ioBuffer = (unsigned long)buffer;
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param_block.ioVRefNum = device->unit + 1;
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param_block.ioRefNum = -5;
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param_block.ioReqCount = size;
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param_block.ioPosMode = fsFromStart;
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param_block.ioPosOffset = offset << SECTOR_SIZE_BITS;
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err = PBReadSync(¶m_block);
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if (err != noErr)
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return -1;
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return 0;
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}
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