57 static int get_exclusive(struct ubi_volume_desc *desc)  in get_exclusive()  argument
60 	struct ubi_volume *vol = desc->vol;  in get_exclusive()
71 		err = desc->mode;  in get_exclusive()
72 		desc->mode = UBI_EXCLUSIVE;  in get_exclusive()
84 static void revoke_exclusive(struct ubi_volume_desc *desc, int mode)  in revoke_exclusive()  argument
86 	struct ubi_volume *vol = desc->vol;  in revoke_exclusive()
90 	ubi_assert(vol->exclusive == 1 && desc->mode == UBI_EXCLUSIVE);  in revoke_exclusive()
102 	desc->mode = mode;  in revoke_exclusive()
107 	struct ubi_volume_desc *desc;  in vol_cdev_open()  local
122 	desc = ubi_open_volume(ubi_num, vol_id, mode);  in vol_cdev_open()
123 	if (IS_ERR(desc))  in vol_cdev_open()
124 		return PTR_ERR(desc);  in vol_cdev_open()
126 	file->private_data = desc;  in vol_cdev_open()
132 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_release()  local
133 	struct ubi_volume *vol = desc->vol;  in vol_cdev_release()
136 		vol->ubi->ubi_num, vol->vol_id, desc->mode);  in vol_cdev_release()
152 	ubi_close_volume(desc);  in vol_cdev_release()
158 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_llseek()  local
159 	struct ubi_volume *vol = desc->vol;  in vol_cdev_llseek()
173 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_fsync()  local
174 	struct ubi_device *ubi = desc->vol->ubi;  in vol_cdev_fsync()
187 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_read()  local
188 	struct ubi_volume *vol = desc->vol;  in vol_cdev_read()
264 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_direct_write()  local
265 	struct ubi_volume *vol = desc->vol;  in vol_cdev_direct_write()
340 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_write()  local
341 	struct ubi_volume *vol = desc->vol;  in vol_cdev_write()
366 			revoke_exclusive(desc, UBI_READWRITE);  in vol_cdev_write()
381 		revoke_exclusive(desc, UBI_READWRITE);  in vol_cdev_write()
391 	struct ubi_volume_desc *desc = file->private_data;  in vol_cdev_ioctl()  local
392 	struct ubi_volume *vol = desc->vol;  in vol_cdev_ioctl()
413 		if (desc->mode == UBI_READONLY) {  in vol_cdev_ioctl()
425 		err = get_exclusive(desc);  in vol_cdev_ioctl()
432 			revoke_exclusive(desc, UBI_READWRITE);  in vol_cdev_ioctl()
449 		if (desc->mode == UBI_READONLY ||  in vol_cdev_ioctl()
461 		err = get_exclusive(desc);  in vol_cdev_ioctl()
467 			revoke_exclusive(desc, UBI_READWRITE);  in vol_cdev_ioctl()
482 		if (desc->mode == UBI_READONLY ||  in vol_cdev_ioctl()
512 		err = ubi_leb_map(desc, req.lnum);  in vol_cdev_ioctl()
526 		err = ubi_leb_unmap(desc, lnum);  in vol_cdev_ioctl()
540 		err = ubi_is_mapped(desc, lnum);  in vol_cdev_ioctl()
558 			desc->vol->direct_writes = !!req.value;  in vol_cdev_ioctl()
573 		ubi_get_volume_info(desc, &vi);  in vol_cdev_ioctl()
583 		ubi_get_volume_info(desc, &vi);  in vol_cdev_ioctl()
738 		re->desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_METAONLY);  in rename_volumes()
739 		if (IS_ERR(re->desc)) {  in rename_volumes()
740 			err = PTR_ERR(re->desc);  in rename_volumes()
748 		if (re->desc->vol->name_len == name_len &&  in rename_volumes()
749 		    !memcmp(re->desc->vol->name, name, name_len)) {  in rename_volumes()
750 			ubi_close_volume(re->desc);  in rename_volumes()
759 			vol_id, re->desc->vol->name, name);  in rename_volumes()
767 		struct ubi_volume_desc *desc;  in rename_volumes()  local
777 			if (re->new_name_len == re1->desc->vol->name_len &&  in rename_volumes()
778 			    !memcmp(re->new_name, re1->desc->vol->name,  in rename_volumes()
779 				    re1->desc->vol->name_len)) {  in rename_volumes()
792 		desc = ubi_open_volume_nm(ubi->ubi_num, re->new_name,  in rename_volumes()
794 		if (IS_ERR(desc)) {  in rename_volumes()
795 			err = PTR_ERR(desc);  in rename_volumes()
809 			ubi_close_volume(desc);  in rename_volumes()
814 		re1->desc = desc;  in rename_volumes()
817 			re1->desc->vol->vol_id, re1->desc->vol->name);  in rename_volumes()
826 		ubi_close_volume(re->desc);  in rename_volumes()
838 	struct ubi_volume_desc *desc;  in ubi_cdev_ioctl()  local
890 		desc = ubi_open_volume(ubi->ubi_num, vol_id, UBI_EXCLUSIVE);  in ubi_cdev_ioctl()
891 		if (IS_ERR(desc)) {  in ubi_cdev_ioctl()
892 			err = PTR_ERR(desc);  in ubi_cdev_ioctl()
897 		err = ubi_remove_volume(desc, 0);  in ubi_cdev_ioctl()
905 		ubi_close_volume(desc);  in ubi_cdev_ioctl()
926 		desc = ubi_open_volume(ubi->ubi_num, req.vol_id, UBI_EXCLUSIVE);  in ubi_cdev_ioctl()
927 		if (IS_ERR(desc)) {  in ubi_cdev_ioctl()
928 			err = PTR_ERR(desc);  in ubi_cdev_ioctl()
932 		pebs = div_u64(req.bytes + desc->vol->usable_leb_size - 1,  in ubi_cdev_ioctl()
933 			       desc->vol->usable_leb_size);  in ubi_cdev_ioctl()
936 		err = ubi_resize_volume(desc, pebs);  in ubi_cdev_ioctl()
938 		ubi_close_volume(desc);  in ubi_cdev_ioctl()