EMILE/libscsi/scsi_read_sector.c

/*
 *
 * (c) 2004, 2005 Laurent Vivier <Laurent@Vivier.EU>
 *
 */

#include <sys/types.h>
#include <string.h>

#include <macos/devices.h>

#include "libscsi.h"

#define ISO_BLOCKS(X)   (((X) / device->sector_size) + (((X)%device->sector_size)?1:0))

/* offset is a block number
 * size is the number of bytes to read
 */

int scsi_read_sector(scsi_device_t *device,
		     off_t offset, void* buffer, size_t size)
{
	OSErr err;

	err = scsi_READ(device->target, offset, ISO_BLOCKS(size), buffer, size);
	if (err != noErr)
		return -1;

	return 0;
}