3121 		struct mtop mtc;  in st_ioctl()  local
3123 		if (_IOC_SIZE(cmd_in) != sizeof(mtc)) {  in st_ioctl()
3128 		i = copy_from_user((char *) &mtc, (char *) arg, sizeof(struct mtop));  in st_ioctl()
3134 		if (mtc.mt_op == MTSETDRVBUFFER && !capable(CAP_SYS_ADMIN)) {  in st_ioctl()
3141 		    (mtc.mt_op != MTSETDRVBUFFER &&  in st_ioctl()
3142 		     (mtc.mt_count & MT_ST_OPTIONS) == 0)) {  in st_ioctl()
3150 				if (mtc.mt_op == MTFSF || mtc.mt_op == MTFSFM ||  in st_ioctl()
3151                                     mtc.mt_op == MTEOM) {  in st_ioctl()
3152 					mtc.mt_count -= 1;  in st_ioctl()
3155 				} else if (mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM) {  in st_ioctl()
3156 					mtc.mt_count += 1;  in st_ioctl()
3162 			if (mtc.mt_op == MTSEEK) {  in st_ioctl()
3168 				i = mtc.mt_op == MTREW || mtc.mt_op == MTOFFL ||  in st_ioctl()
3169 				    mtc.mt_op == MTRETEN || mtc.mt_op == MTEOM ||  in st_ioctl()
3170 				    mtc.mt_op == MTLOCK || mtc.mt_op == MTLOAD ||  in st_ioctl()
3171 				    mtc.mt_op == MTFSF || mtc.mt_op == MTFSFM ||  in st_ioctl()
3172 				    mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM ||  in st_ioctl()
3173 				    mtc.mt_op == MTCOMPRESSION;  in st_ioctl()
3186 			if (mtc.mt_op != MTREW &&  in st_ioctl()
3187 			    mtc.mt_op != MTOFFL &&  in st_ioctl()
3188 			    mtc.mt_op != MTRETEN &&  in st_ioctl()
3189 			    mtc.mt_op != MTERASE &&  in st_ioctl()
3190 			    mtc.mt_op != MTSEEK &&  in st_ioctl()
3191 			    mtc.mt_op != MTEOM) {  in st_ioctl()
3207 		if (mtc.mt_op != MTNOP && mtc.mt_op != MTSETBLK &&  in st_ioctl()
3208 		    mtc.mt_op != MTSETDENSITY && mtc.mt_op != MTWSM &&  in st_ioctl()
3209 		    mtc.mt_op != MTSETDRVBUFFER && mtc.mt_op != MTSETPART)  in st_ioctl()
3212 		if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED)  in st_ioctl()
3215 		if (mtc.mt_op == MTSETDRVBUFFER &&  in st_ioctl()
3216 		    (mtc.mt_count & MT_ST_OPTIONS) != 0) {  in st_ioctl()
3217 			retval = st_set_options(STp, mtc.mt_count);  in st_ioctl()
3221 		if (mtc.mt_op == MTSETPART) {  in st_ioctl()
3223 			    mtc.mt_count < 0 || mtc.mt_count >= ST_NBR_PARTITIONS) {  in st_ioctl()
3227 			if (mtc.mt_count >= STp->nbr_partitions &&  in st_ioctl()
3232 			if (mtc.mt_count >= STp->nbr_partitions) {  in st_ioctl()
3236 			STp->new_partition = mtc.mt_count;  in st_ioctl()
3241 		if (mtc.mt_op == MTMKPART) {  in st_ioctl()
3247 			    (i = partition_tape(STp, mtc.mt_count)) < 0) {  in st_ioctl()
3263 		if (mtc.mt_op == MTSEEK) {  in st_ioctl()
3264 			i = set_location(STp, mtc.mt_count, STp->new_partition, 0);  in st_ioctl()
3271 		if (mtc.mt_op == MTUNLOAD || mtc.mt_op == MTOFFL) {  in st_ioctl()
3276 		if (mtc.mt_op == MTLOAD) {  in st_ioctl()
3277 			retval = do_load_unload(STp, file, max(1, mtc.mt_count));  in st_ioctl()
3287 		if (mtc.mt_op == MTCOMPRESSION)  in st_ioctl()
3288 			retval = st_compression(STp, (mtc.mt_count & 1));  in st_ioctl()
3290 			retval = st_int_ioctl(STp, mtc.mt_op, mtc.mt_count);  in st_ioctl()