scsi_tape.7 (2010 09)

scsi_tape(7) scsi_tape(7)

#define SIOC_GET_BLOCK_SIZE _IOR(’S’, 30, int)

#define SIOC_SET_BLOCK_SIZE _IOW(’S’, 31, int)

#define SIOC_GET_BLOCK_LIMITS _IOW(’S’, 32, struct scsi_block_limits)

#define SIOC_GET_POSITION _IOR(’S’, 33, int)

#define SIOC_SET_POSITION _IOW(’S’, 34, int)

/* structure for SIOC_GET_BLOCK_LIMITS ioctl */

struct scsi_block_limits {

unsigned min_blk_size;

unsigned max_blk_size;

};

WARNINGS

SCSI bus and device resets cause some devices to reposition media to beginning-of-tape (BOT). This

unintentional media repositioning can cause loss of data. The

scsi_tape driver causes the ﬁrst subse-

quent

open() attempt to fail as an indication of potential data loss.

The

scsi_tape driver does not write ﬁlemarks at close if the media has been programmatically reposi-

tioned. Applications that reposition the media prior to closing the device should write any required tape-

marks.