59 	int users, err;  in get_exclusive()  local
67 		err = -EBUSY;  in get_exclusive()
71 		err = desc->mode;  in get_exclusive()
76 	return err;  in get_exclusive()
176 	int err;  in vol_cdev_fsync()  local
178 	err = ubi_sync(ubi->ubi_num);  in vol_cdev_fsync()
180 	return err;  in vol_cdev_fsync()
190 	int err, lnum, off, len,  tbuf_size;  in vol_cdev_read()  local
230 		err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0);  in vol_cdev_read()
231 		if (err)  in vol_cdev_read()
243 		err = copy_to_user(buf, tbuf, len);  in vol_cdev_read()
244 		if (err) {  in vol_cdev_read()
245 			err = -EFAULT;  in vol_cdev_read()
254 	return err ? err : count_save - count;  in vol_cdev_read()
267 	int lnum, off, len, tbuf_size, err = 0;  in vol_cdev_direct_write()  local
310 		err = copy_from_user(tbuf, buf, len);  in vol_cdev_direct_write()
311 		if (err) {  in vol_cdev_direct_write()
312 			err = -EFAULT;  in vol_cdev_direct_write()
316 		err = ubi_eba_write_leb(ubi, vol, lnum, tbuf, off, len);  in vol_cdev_direct_write()
317 		if (err)  in vol_cdev_direct_write()
333 	return err ? err : count_save - count;  in vol_cdev_direct_write()
339 	int err = 0;  in vol_cdev_write()  local
348 		err = ubi_more_update_data(ubi, vol, buf, count);  in vol_cdev_write()
350 		err = ubi_more_leb_change_data(ubi, vol, buf, count);  in vol_cdev_write()
352 	if (err < 0) {  in vol_cdev_write()
354 			count, err);  in vol_cdev_write()
355 		return err;  in vol_cdev_write()
358 	if (err) {  in vol_cdev_write()
363 		count = err;  in vol_cdev_write()
370 		err = ubi_check_volume(ubi, vol->vol_id);  in vol_cdev_write()
371 		if (err < 0)  in vol_cdev_write()
372 			return err;  in vol_cdev_write()
374 		if (err) {  in vol_cdev_write()
390 	int err = 0;  in vol_cdev_ioctl()  local
403 			err = -EPERM;  in vol_cdev_ioctl()
407 		err = copy_from_user(&bytes, argp, sizeof(int64_t));  in vol_cdev_ioctl()
408 		if (err) {  in vol_cdev_ioctl()
409 			err = -EFAULT;  in vol_cdev_ioctl()
414 			err = -EROFS;  in vol_cdev_ioctl()
421 			err = -EINVAL;  in vol_cdev_ioctl()
425 		err = get_exclusive(desc);  in vol_cdev_ioctl()
426 		if (err < 0)  in vol_cdev_ioctl()
429 		err = ubi_start_update(ubi, vol, bytes);  in vol_cdev_ioctl()
442 		err = copy_from_user(&req, argp,  in vol_cdev_ioctl()
444 		if (err) {  in vol_cdev_ioctl()
445 			err = -EFAULT;  in vol_cdev_ioctl()
451 			err = -EROFS;  in vol_cdev_ioctl()
456 		err = -EINVAL;  in vol_cdev_ioctl()
461 		err = get_exclusive(desc);  in vol_cdev_ioctl()
462 		if (err < 0)  in vol_cdev_ioctl()
465 		err = ubi_start_leb_change(ubi, vol, &req);  in vol_cdev_ioctl()
476 		err = get_user(lnum, (__user int32_t *)argp);  in vol_cdev_ioctl()
477 		if (err) {  in vol_cdev_ioctl()
478 			err = -EFAULT;  in vol_cdev_ioctl()
484 			err = -EROFS;  in vol_cdev_ioctl()
489 			err = -EINVAL;  in vol_cdev_ioctl()
494 		err = ubi_eba_unmap_leb(ubi, vol, lnum);  in vol_cdev_ioctl()
495 		if (err)  in vol_cdev_ioctl()
498 		err = ubi_wl_flush(ubi, UBI_ALL, UBI_ALL);  in vol_cdev_ioctl()
507 		err = copy_from_user(&req, argp, sizeof(struct ubi_map_req));  in vol_cdev_ioctl()
508 		if (err) {  in vol_cdev_ioctl()
509 			err = -EFAULT;  in vol_cdev_ioctl()
512 		err = ubi_leb_map(desc, req.lnum);  in vol_cdev_ioctl()
521 		err = get_user(lnum, (__user int32_t *)argp);  in vol_cdev_ioctl()
522 		if (err) {  in vol_cdev_ioctl()
523 			err = -EFAULT;  in vol_cdev_ioctl()
526 		err = ubi_leb_unmap(desc, lnum);  in vol_cdev_ioctl()
535 		err = get_user(lnum, (__user int32_t *)argp);  in vol_cdev_ioctl()
536 		if (err) {  in vol_cdev_ioctl()
537 			err = -EFAULT;  in vol_cdev_ioctl()
540 		err = ubi_is_mapped(desc, lnum);  in vol_cdev_ioctl()
549 		err = copy_from_user(&req, argp,  in vol_cdev_ioctl()
551 		if (err) {  in vol_cdev_ioctl()
552 			err = -EFAULT;  in vol_cdev_ioctl()
562 			err = -EINVAL;  in vol_cdev_ioctl()
574 		err = ubiblock_create(&vi);  in vol_cdev_ioctl()
584 		err = ubiblock_remove(&vi);  in vol_cdev_ioctl()
589 		err = -ENOTTY;  in vol_cdev_ioctl()
592 	return err;  in vol_cdev_ioctl()
605 	int n, err = -EINVAL;  in verify_mkvol_req()  local
636 		err = -ENAMETOOLONG;  in verify_mkvol_req()
649 	return err;  in verify_mkvol_req()
684 	int i, n, err;  in rename_volumes()  local
734 			err = -ENOMEM;  in rename_volumes()
740 			err = PTR_ERR(re->desc);  in rename_volumes()
742 				vol_id, err);  in rename_volumes()
795 			err = PTR_ERR(desc);  in rename_volumes()
796 			if (err == -ENODEV)  in rename_volumes()
802 				re->new_name, err);  in rename_volumes()
808 			err = -ENOMEM;  in rename_volumes()
821 	err = ubi_rename_volumes(ubi, &rename_list);  in rename_volumes()
830 	return err;  in rename_volumes()
836 	int err = 0;  in ubi_cdev_ioctl()  local
855 		err = copy_from_user(&req, argp, sizeof(struct ubi_mkvol_req));  in ubi_cdev_ioctl()
856 		if (err) {  in ubi_cdev_ioctl()
857 			err = -EFAULT;  in ubi_cdev_ioctl()
861 		err = verify_mkvol_req(ubi, &req);  in ubi_cdev_ioctl()
862 		if (err)  in ubi_cdev_ioctl()
866 		err = ubi_create_volume(ubi, &req);  in ubi_cdev_ioctl()
868 		if (err)  in ubi_cdev_ioctl()
871 		err = put_user(req.vol_id, (__user int32_t *)argp);  in ubi_cdev_ioctl()
872 		if (err)  in ubi_cdev_ioctl()
873 			err = -EFAULT;  in ubi_cdev_ioctl()
884 		err = get_user(vol_id, (__user int32_t *)argp);  in ubi_cdev_ioctl()
885 		if (err) {  in ubi_cdev_ioctl()
886 			err = -EFAULT;  in ubi_cdev_ioctl()
892 			err = PTR_ERR(desc);  in ubi_cdev_ioctl()
897 		err = ubi_remove_volume(desc, 0);  in ubi_cdev_ioctl()
916 		err = copy_from_user(&req, argp, sizeof(struct ubi_rsvol_req));  in ubi_cdev_ioctl()
917 		if (err) {  in ubi_cdev_ioctl()
918 			err = -EFAULT;  in ubi_cdev_ioctl()
922 		err = verify_rsvol_req(ubi, &req);  in ubi_cdev_ioctl()
923 		if (err)  in ubi_cdev_ioctl()
928 			err = PTR_ERR(desc);  in ubi_cdev_ioctl()
936 		err = ubi_resize_volume(desc, pebs);  in ubi_cdev_ioctl()
950 			err = -ENOMEM;  in ubi_cdev_ioctl()
954 		err = copy_from_user(req, argp, sizeof(struct ubi_rnvol_req));  in ubi_cdev_ioctl()
955 		if (err) {  in ubi_cdev_ioctl()
956 			err = -EFAULT;  in ubi_cdev_ioctl()
961 		err = rename_volumes(ubi, req);  in ubi_cdev_ioctl()
967 		err = -ENOTTY;  in ubi_cdev_ioctl()
972 	return err;  in ubi_cdev_ioctl()
978 	int err = 0;  in ctrl_cdev_ioctl()  local
992 		err = copy_from_user(&req, argp, sizeof(struct ubi_attach_req));  in ctrl_cdev_ioctl()
993 		if (err) {  in ctrl_cdev_ioctl()
994 			err = -EFAULT;  in ctrl_cdev_ioctl()
1000 			err = -EINVAL;  in ctrl_cdev_ioctl()
1006 			err = PTR_ERR(mtd);  in ctrl_cdev_ioctl()
1015 		err = ubi_attach_mtd_dev(mtd, req.ubi_num, req.vid_hdr_offset,  in ctrl_cdev_ioctl()
1018 		if (err < 0)  in ctrl_cdev_ioctl()
1022 			err = put_user(err, (__user int32_t *)argp);  in ctrl_cdev_ioctl()
1033 		err = get_user(ubi_num, (__user int32_t *)argp);  in ctrl_cdev_ioctl()
1034 		if (err) {  in ctrl_cdev_ioctl()
1035 			err = -EFAULT;  in ctrl_cdev_ioctl()
1040 		err = ubi_detach_mtd_dev(ubi_num, 0);  in ctrl_cdev_ioctl()
1046 		err = -ENOTTY;  in ctrl_cdev_ioctl()
1050 	return err;  in ctrl_cdev_ioctl()