19 static int self_check_volumes(struct ubi_device *ubi);
59 	struct ubi_device *ubi;  in vol_attribute_show()  local
61 	ubi = ubi_get_device(vol->ubi->ubi_num);  in vol_attribute_show()
62 	if (!ubi)  in vol_attribute_show()
65 	spin_lock(&ubi->volumes_lock);  in vol_attribute_show()
66 	if (!ubi->volumes[vol->vol_id]) {  in vol_attribute_show()
67 		spin_unlock(&ubi->volumes_lock);  in vol_attribute_show()
68 		ubi_put_device(ubi);  in vol_attribute_show()
73 	spin_unlock(&ubi->volumes_lock);  in vol_attribute_show()
102 	spin_lock(&ubi->volumes_lock);  in vol_attribute_show()
105 	spin_unlock(&ubi->volumes_lock);  in vol_attribute_show()
106 	ubi_put_device(ubi);  in vol_attribute_show()
144 int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)  in ubi_create_volume()  argument
151 	if (ubi->ro_mode)  in ubi_create_volume()
160 	vol->dev.parent = &ubi->dev;  in ubi_create_volume()
167 	spin_lock(&ubi->volumes_lock);  in ubi_create_volume()
171 		for (i = 0; i < ubi->vtbl_slots; i++)  in ubi_create_volume()
172 			if (!ubi->volumes[i]) {  in ubi_create_volume()
178 			ubi_err(ubi, "out of volume IDs");  in ubi_create_volume()
186 		ubi->ubi_num, vol_id, (unsigned long long)req->bytes,  in ubi_create_volume()
191 	if (ubi->volumes[vol_id]) {  in ubi_create_volume()
192 		ubi_err(ubi, "volume %d already exists", vol_id);  in ubi_create_volume()
197 	for (i = 0; i < ubi->vtbl_slots; i++)  in ubi_create_volume()
198 		if (ubi->volumes[i] &&  in ubi_create_volume()
199 		    ubi->volumes[i]->name_len == req->name_len &&  in ubi_create_volume()
200 		    !strcmp(ubi->volumes[i]->name, req->name)) {  in ubi_create_volume()
201 			ubi_err(ubi, "volume \"%s\" exists (ID %d)",  in ubi_create_volume()
207 	vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment;  in ubi_create_volume()
212 	if (vol->reserved_pebs > ubi->avail_pebs) {  in ubi_create_volume()
213 		ubi_err(ubi, "not enough PEBs, only %d available",  in ubi_create_volume()
214 			ubi->avail_pebs);  in ubi_create_volume()
215 		if (ubi->corr_peb_count)  in ubi_create_volume()
216 			ubi_err(ubi, "%d PEBs are corrupted and not used",  in ubi_create_volume()
217 				ubi->corr_peb_count);  in ubi_create_volume()
221 	ubi->avail_pebs -= vol->reserved_pebs;  in ubi_create_volume()
222 	ubi->rsvd_pebs += vol->reserved_pebs;  in ubi_create_volume()
223 	spin_unlock(&ubi->volumes_lock);  in ubi_create_volume()
227 	vol->data_pad  = ubi->leb_size % vol->alignment;  in ubi_create_volume()
231 	vol->ubi = ubi;  in ubi_create_volume()
237 	err = ubi_wl_flush(ubi, vol_id, UBI_ALL);  in ubi_create_volume()
265 	spin_lock(&ubi->volumes_lock);  in ubi_create_volume()
266 	ubi->volumes[vol_id] = vol;  in ubi_create_volume()
267 	ubi->vol_count += 1;  in ubi_create_volume()
268 	spin_unlock(&ubi->volumes_lock);  in ubi_create_volume()
274 	vol->dev.devt = MKDEV(MAJOR(ubi->cdev.dev), vol_id + 1);  in ubi_create_volume()
275 	dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);  in ubi_create_volume()
278 		ubi_err(ubi, "cannot add device");  in ubi_create_volume()
298 	err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);  in ubi_create_volume()
302 	ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);  in ubi_create_volume()
303 	self_check_volumes(ubi);  in ubi_create_volume()
314 	spin_lock(&ubi->volumes_lock);  in ubi_create_volume()
315 	ubi->volumes[vol_id] = NULL;  in ubi_create_volume()
316 	ubi->vol_count -= 1;  in ubi_create_volume()
317 	spin_unlock(&ubi->volumes_lock);  in ubi_create_volume()
320 	spin_lock(&ubi->volumes_lock);  in ubi_create_volume()
321 	ubi->rsvd_pebs -= vol->reserved_pebs;  in ubi_create_volume()
322 	ubi->avail_pebs += vol->reserved_pebs;  in ubi_create_volume()
324 	spin_unlock(&ubi->volumes_lock);  in ubi_create_volume()
326 	ubi_err(ubi, "cannot create volume %d, error %d", vol_id, err);  in ubi_create_volume()
343 	struct ubi_device *ubi = vol->ubi;  in ubi_remove_volume()  local
346 	dbg_gen("remove device %d, volume %d", ubi->ubi_num, vol_id);  in ubi_remove_volume()
348 	ubi_assert(vol == ubi->volumes[vol_id]);  in ubi_remove_volume()
350 	if (ubi->ro_mode)  in ubi_remove_volume()
353 	spin_lock(&ubi->volumes_lock);  in ubi_remove_volume()
362 	ubi->volumes[vol_id] = NULL;  in ubi_remove_volume()
363 	spin_unlock(&ubi->volumes_lock);  in ubi_remove_volume()
366 		err = ubi_change_vtbl_record(ubi, vol_id, NULL);  in ubi_remove_volume()
372 		err = ubi_eba_unmap_leb(ubi, vol, i);  in ubi_remove_volume()
380 	spin_lock(&ubi->volumes_lock);  in ubi_remove_volume()
381 	ubi->rsvd_pebs -= reserved_pebs;  in ubi_remove_volume()
382 	ubi->avail_pebs += reserved_pebs;  in ubi_remove_volume()
383 	ubi_update_reserved(ubi);  in ubi_remove_volume()
384 	ubi->vol_count -= 1;  in ubi_remove_volume()
385 	spin_unlock(&ubi->volumes_lock);  in ubi_remove_volume()
387 	ubi_volume_notify(ubi, vol, UBI_VOLUME_REMOVED);  in ubi_remove_volume()
389 		self_check_volumes(ubi);  in ubi_remove_volume()
394 	ubi_err(ubi, "cannot remove volume %d, error %d", vol_id, err);  in ubi_remove_volume()
395 	spin_lock(&ubi->volumes_lock);  in ubi_remove_volume()
396 	ubi->volumes[vol_id] = vol;  in ubi_remove_volume()
398 	spin_unlock(&ubi->volumes_lock);  in ubi_remove_volume()
415 	struct ubi_device *ubi = vol->ubi;  in ubi_resize_volume()  local
420 	if (ubi->ro_mode)  in ubi_resize_volume()
424 		ubi->ubi_num, vol_id, vol->reserved_pebs, reserved_pebs);  in ubi_resize_volume()
428 		ubi_err(ubi, "too small size %d, %d LEBs contain data",  in ubi_resize_volume()
441 	spin_lock(&ubi->volumes_lock);  in ubi_resize_volume()
443 		spin_unlock(&ubi->volumes_lock);  in ubi_resize_volume()
447 	spin_unlock(&ubi->volumes_lock);  in ubi_resize_volume()
452 		spin_lock(&ubi->volumes_lock);  in ubi_resize_volume()
453 		if (pebs > ubi->avail_pebs) {  in ubi_resize_volume()
454 			ubi_err(ubi, "not enough PEBs: requested %d, available %d",  in ubi_resize_volume()
455 				pebs, ubi->avail_pebs);  in ubi_resize_volume()
456 			if (ubi->corr_peb_count)  in ubi_resize_volume()
457 				ubi_err(ubi, "%d PEBs are corrupted and not used",  in ubi_resize_volume()
458 					ubi->corr_peb_count);  in ubi_resize_volume()
459 			spin_unlock(&ubi->volumes_lock);  in ubi_resize_volume()
463 		ubi->avail_pebs -= pebs;  in ubi_resize_volume()
464 		ubi->rsvd_pebs += pebs;  in ubi_resize_volume()
467 		spin_unlock(&ubi->volumes_lock);  in ubi_resize_volume()
472 			err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i);  in ubi_resize_volume()
476 		spin_lock(&ubi->volumes_lock);  in ubi_resize_volume()
477 		ubi->rsvd_pebs += pebs;  in ubi_resize_volume()
478 		ubi->avail_pebs -= pebs;  in ubi_resize_volume()
479 		ubi_update_reserved(ubi);  in ubi_resize_volume()
482 		spin_unlock(&ubi->volumes_lock);  in ubi_resize_volume()
491 		err = ubi_wl_flush(ubi, vol_id, UBI_ALL);  in ubi_resize_volume()
497 	vtbl_rec = ubi->vtbl[vol_id];  in ubi_resize_volume()
499 	err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);  in ubi_resize_volume()
511 	ubi_volume_notify(ubi, vol, UBI_VOLUME_RESIZED);  in ubi_resize_volume()
512 	self_check_volumes(ubi);  in ubi_resize_volume()
517 		spin_lock(&ubi->volumes_lock);  in ubi_resize_volume()
518 		ubi->rsvd_pebs -= pebs;  in ubi_resize_volume()
519 		ubi->avail_pebs += pebs;  in ubi_resize_volume()
520 		spin_unlock(&ubi->volumes_lock);  in ubi_resize_volume()
536 int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list)  in ubi_rename_volumes()  argument
541 	err = ubi_vtbl_rename_volumes(ubi, rename_list);  in ubi_rename_volumes()
553 			spin_lock(&ubi->volumes_lock);  in ubi_rename_volumes()
556 			spin_unlock(&ubi->volumes_lock);  in ubi_rename_volumes()
557 			ubi_volume_notify(ubi, vol, UBI_VOLUME_RENAMED);  in ubi_rename_volumes()
562 		self_check_volumes(ubi);  in ubi_rename_volumes()
575 int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)  in ubi_add_volume()  argument
585 	dev = MKDEV(MAJOR(ubi->cdev.dev), vol->vol_id + 1);  in ubi_add_volume()
588 		ubi_err(ubi, "cannot add character device for volume %d, error %d",  in ubi_add_volume()
594 	vol->dev.parent = &ubi->dev;  in ubi_add_volume()
598 	dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);  in ubi_add_volume()
603 	self_check_volumes(ubi);  in ubi_add_volume()
619 void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)  in ubi_free_volume()  argument
623 	ubi->volumes[vol->vol_id] = NULL;  in ubi_free_volume()
635 static int self_check_volume(struct ubi_device *ubi, int vol_id)  in self_check_volume()  argument
637 	int idx = vol_id2idx(ubi, vol_id);  in self_check_volume()
643 	spin_lock(&ubi->volumes_lock);  in self_check_volume()
644 	reserved_pebs = be32_to_cpu(ubi->vtbl[vol_id].reserved_pebs);  in self_check_volume()
645 	vol = ubi->volumes[idx];  in self_check_volume()
649 			ubi_err(ubi, "no volume info, but volume exists");  in self_check_volume()
652 		spin_unlock(&ubi->volumes_lock);  in self_check_volume()
658 		ubi_err(ubi, "negative values");  in self_check_volume()
661 	if (vol->alignment > ubi->leb_size || vol->alignment == 0) {  in self_check_volume()
662 		ubi_err(ubi, "bad alignment");  in self_check_volume()
666 	n = vol->alignment & (ubi->min_io_size - 1);  in self_check_volume()
668 		ubi_err(ubi, "alignment is not multiple of min I/O unit");  in self_check_volume()
672 	n = ubi->leb_size % vol->alignment;  in self_check_volume()
674 		ubi_err(ubi, "bad data_pad, has to be %lld", n);  in self_check_volume()
680 		ubi_err(ubi, "bad vol_type");  in self_check_volume()
685 		ubi_err(ubi, "update marker and corrupted simultaneously");  in self_check_volume()
689 	if (vol->reserved_pebs > ubi->good_peb_count) {  in self_check_volume()
690 		ubi_err(ubi, "too large reserved_pebs");  in self_check_volume()
694 	n = ubi->leb_size - vol->data_pad;  in self_check_volume()
695 	if (vol->usable_leb_size != ubi->leb_size - vol->data_pad) {  in self_check_volume()
696 		ubi_err(ubi, "bad usable_leb_size, has to be %lld", n);  in self_check_volume()
701 		ubi_err(ubi, "too long volume name, max is %d",  in self_check_volume()
708 		ubi_err(ubi, "bad name_len %lld", n);  in self_check_volume()
715 			ubi_err(ubi, "corrupted dynamic volume");  in self_check_volume()
719 			ubi_err(ubi, "bad used_ebs");  in self_check_volume()
723 			ubi_err(ubi, "bad last_eb_bytes");  in self_check_volume()
727 			ubi_err(ubi, "bad used_bytes");  in self_check_volume()
732 			ubi_err(ubi, "bad skip_check");  in self_check_volume()
737 			ubi_err(ubi, "bad used_ebs");  in self_check_volume()
742 			ubi_err(ubi, "bad last_eb_bytes");  in self_check_volume()
747 			ubi_err(ubi, "bad used_bytes");  in self_check_volume()
752 	alignment  = be32_to_cpu(ubi->vtbl[vol_id].alignment);  in self_check_volume()
753 	data_pad   = be32_to_cpu(ubi->vtbl[vol_id].data_pad);  in self_check_volume()
754 	name_len   = be16_to_cpu(ubi->vtbl[vol_id].name_len);  in self_check_volume()
755 	upd_marker = ubi->vtbl[vol_id].upd_marker;  in self_check_volume()
756 	name       = &ubi->vtbl[vol_id].name[0];  in self_check_volume()
757 	if (ubi->vtbl[vol_id].vol_type == UBI_VID_DYNAMIC)  in self_check_volume()
765 		ubi_err(ubi, "volume info is different");  in self_check_volume()
769 	spin_unlock(&ubi->volumes_lock);  in self_check_volume()
773 	ubi_err(ubi, "self-check failed for volume %d", vol_id);  in self_check_volume()
776 	ubi_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);  in self_check_volume()
778 	spin_unlock(&ubi->volumes_lock);  in self_check_volume()
788 static int self_check_volumes(struct ubi_device *ubi)  in self_check_volumes()  argument
792 	if (!ubi_dbg_chk_gen(ubi))  in self_check_volumes()
795 	for (i = 0; i < ubi->vtbl_slots; i++) {  in self_check_volumes()
796 		err = self_check_volume(ubi, i);  in self_check_volumes()