st_validate_tapemarks
ST_FUNC(ST_DEVINFO, st_validate_tapemarks);
rval = st_validate_tapemarks(un, st_uscsi_cmd, &un->un_pos);
rval = st_validate_tapemarks(un, st_uscsi_cmd, &dest);
static int st_validate_tapemarks(struct scsi_tape *un, ubufunc_t ubf,
(void) st_validate_tapemarks(un,