3441 		struct mtop mtc;  in st_ioctl()  local
3443 		if (_IOC_SIZE(cmd_in) != sizeof(mtc)) {  in st_ioctl()
3448 		i = copy_from_user(&mtc, p, sizeof(struct mtop));  in st_ioctl()
3454 		if (mtc.mt_op == MTSETDRVBUFFER && !capable(CAP_SYS_ADMIN)) {  in st_ioctl()
3461 		    (mtc.mt_op != MTSETDRVBUFFER &&  in st_ioctl()
3462 		     (mtc.mt_count & MT_ST_OPTIONS) == 0)) {  in st_ioctl()
3470 				if (mtc.mt_op == MTFSF || mtc.mt_op == MTFSFM ||  in st_ioctl()
3471                                     mtc.mt_op == MTEOM) {  in st_ioctl()
3472 					mtc.mt_count -= 1;  in st_ioctl()
3475 				} else if (mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM) {  in st_ioctl()
3476 					mtc.mt_count += 1;  in st_ioctl()
3482 			if (mtc.mt_op == MTSEEK) {  in st_ioctl()
3488 				i = mtc.mt_op == MTREW || mtc.mt_op == MTOFFL ||  in st_ioctl()
3489 				    mtc.mt_op == MTRETEN || mtc.mt_op == MTEOM ||  in st_ioctl()
3490 				    mtc.mt_op == MTLOCK || mtc.mt_op == MTLOAD ||  in st_ioctl()
3491 				    mtc.mt_op == MTFSF || mtc.mt_op == MTFSFM ||  in st_ioctl()
3492 				    mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM ||  in st_ioctl()
3493 				    mtc.mt_op == MTCOMPRESSION;  in st_ioctl()
3501 			    (mtc.mt_op == MTREW || mtc.mt_op == MTOFFL ||  in st_ioctl()
3502 			     mtc.mt_op == MTSEEK ||  in st_ioctl()
3503 			     mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM)) {  in st_ioctl()
3509 				if (mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM)  in st_ioctl()
3510 					mtc.mt_count++;  in st_ioctl()
3520 			if (mtc.mt_op != MTREW &&  in st_ioctl()
3521 			    mtc.mt_op != MTOFFL &&  in st_ioctl()
3522 			    mtc.mt_op != MTRETEN &&  in st_ioctl()
3523 			    mtc.mt_op != MTERASE &&  in st_ioctl()
3524 			    mtc.mt_op != MTSEEK &&  in st_ioctl()
3525 			    mtc.mt_op != MTEOM) {  in st_ioctl()
3534 		if (mtc.mt_op != MTNOP && mtc.mt_op != MTSETBLK &&  in st_ioctl()
3535 		    mtc.mt_op != MTSETDENSITY && mtc.mt_op != MTWSM &&  in st_ioctl()
3536 		    mtc.mt_op != MTSETDRVBUFFER && mtc.mt_op != MTSETPART)  in st_ioctl()
3539 		if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED)  in st_ioctl()
3542 		if (mtc.mt_op == MTSETDRVBUFFER &&  in st_ioctl()
3543 		    (mtc.mt_count & MT_ST_OPTIONS) != 0) {  in st_ioctl()
3544 			retval = st_set_options(STp, mtc.mt_count);  in st_ioctl()
3548 		if (mtc.mt_op == MTSETPART) {  in st_ioctl()
3550 			    mtc.mt_count < 0 || mtc.mt_count >= ST_NBR_PARTITIONS) {  in st_ioctl()
3554 			if (mtc.mt_count >= STp->nbr_partitions &&  in st_ioctl()
3559 			if (mtc.mt_count >= STp->nbr_partitions) {  in st_ioctl()
3563 			STp->new_partition = mtc.mt_count;  in st_ioctl()
3568 		if (mtc.mt_op == MTMKPART) {  in st_ioctl()
3574 			    (i = partition_tape(STp, mtc.mt_count)) < 0) {  in st_ioctl()
3590 		if (mtc.mt_op == MTSEEK) {  in st_ioctl()
3591 			i = set_location(STp, mtc.mt_count, STp->new_partition, 0);  in st_ioctl()
3598 		if (mtc.mt_op == MTUNLOAD || mtc.mt_op == MTOFFL) {  in st_ioctl()
3603 		if (mtc.mt_op == MTLOAD) {  in st_ioctl()
3604 			retval = do_load_unload(STp, file, max(1, mtc.mt_count));  in st_ioctl()
3608 		if (mtc.mt_op == MTLOCK || mtc.mt_op == MTUNLOCK) {  in st_ioctl()
3609 			retval = do_door_lock(STp, (mtc.mt_op == MTLOCK));  in st_ioctl()
3619 		if (mtc.mt_op == MTCOMPRESSION)  in st_ioctl()
3620 			retval = st_compression(STp, (mtc.mt_count & 1));  in st_ioctl()
3622 			retval = st_int_ioctl(STp, mtc.mt_op, mtc.mt_count);  in st_ioctl()