67 static void self_vtbl_check(const struct ubi_device *ubi);
83 int ubi_change_vtbl_record(struct ubi_device *ubi, int idx,  in ubi_change_vtbl_record()  argument
90 	ubi_assert(idx >= 0 && idx < ubi->vtbl_slots);  in ubi_change_vtbl_record()
91 	layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];  in ubi_change_vtbl_record()
100 	memcpy(&ubi->vtbl[idx], vtbl_rec, sizeof(struct ubi_vtbl_record));  in ubi_change_vtbl_record()
102 		err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,  in ubi_change_vtbl_record()
103 						ubi->vtbl_size);  in ubi_change_vtbl_record()
108 	self_vtbl_check(ubi);  in ubi_change_vtbl_record()
121 int ubi_vtbl_rename_volumes(struct ubi_device *ubi,  in ubi_vtbl_rename_volumes()  argument
131 		struct ubi_vtbl_record *vtbl_rec = &ubi->vtbl[vol->vol_id];  in ubi_vtbl_rename_volumes()
148 	layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];  in ubi_vtbl_rename_volumes()
150 		err = ubi_eba_atomic_leb_change(ubi, layout_vol, i, ubi->vtbl,  in ubi_vtbl_rename_volumes()
151 						ubi->vtbl_size);  in ubi_vtbl_rename_volumes()
167 static int vtbl_check(const struct ubi_device *ubi,  in vtbl_check()  argument
175 	for (i = 0; i < ubi->vtbl_slots; i++) {  in vtbl_check()
188 			ubi_err(ubi, "bad CRC at record %u: %#08x, not %#08x",  in vtbl_check()
209 		if (alignment > ubi->leb_size || alignment == 0) {  in vtbl_check()
214 		n = alignment & (ubi->min_io_size - 1);  in vtbl_check()
220 		n = ubi->leb_size % alignment;  in vtbl_check()
222 			ubi_err(ubi, "bad data_pad, has to be %d", n);  in vtbl_check()
237 		if (reserved_pebs > ubi->good_peb_count) {  in vtbl_check()
238 			ubi_err(ubi, "too large reserved_pebs %d, good PEBs %d",  in vtbl_check()
239 				reserved_pebs, ubi->good_peb_count);  in vtbl_check()
261 	for (i = 0; i < ubi->vtbl_slots - 1; i++) {  in vtbl_check()
262 		for (n = i + 1; n < ubi->vtbl_slots; n++) {  in vtbl_check()
268 				ubi_err(ubi, "volumes %d and %d have the same name \"%s\"",  in vtbl_check()
280 	ubi_err(ubi, "volume table check failed: record %d, error %d", i, err);  in vtbl_check()
295 static int create_vtbl(struct ubi_device *ubi, struct ubi_attach_info *ai,  in create_vtbl()  argument
304 	vid_hdr = ubi_zalloc_vid_hdr(ubi, GFP_KERNEL);  in create_vtbl()
309 	new_aeb = ubi_early_get_peb(ubi, ai);  in create_vtbl()
324 	err = ubi_io_write_vid_hdr(ubi, new_aeb->pnum, vid_hdr);  in create_vtbl()
329 	err = ubi_io_write_data(ubi, vtbl, new_aeb->pnum, 0, ubi->vtbl_size);  in create_vtbl()
337 	err = ubi_add_to_av(ubi, ai, new_aeb->pnum, new_aeb->ec, vid_hdr, 0);  in create_vtbl()
339 	ubi_free_vid_hdr(ubi, vid_hdr);  in create_vtbl()
353 	ubi_free_vid_hdr(ubi, vid_hdr);  in create_vtbl()
368 static struct ubi_vtbl_record *process_lvol(struct ubi_device *ubi,  in process_lvol()  argument
407 		leb[aeb->lnum] = vzalloc(ubi->vtbl_size);  in process_lvol()
413 		err = ubi_io_read_data(ubi, leb[aeb->lnum], aeb->pnum, 0,  in process_lvol()
414 				       ubi->vtbl_size);  in process_lvol()
433 		leb_corrupted[0] = vtbl_check(ubi, leb[0]);  in process_lvol()
442 						  ubi->vtbl_size);  in process_lvol()
444 			ubi_warn(ubi, "volume table copy #2 is corrupted");  in process_lvol()
445 			err = create_vtbl(ubi, ai, 1, leb[0]);  in process_lvol()
448 			ubi_msg(ubi, "volume table was restored");  in process_lvol()
457 			leb_corrupted[1] = vtbl_check(ubi, leb[1]);  in process_lvol()
463 			ubi_err(ubi, "both volume tables are corrupted");  in process_lvol()
467 		ubi_warn(ubi, "volume table copy #1 is corrupted");  in process_lvol()
468 		err = create_vtbl(ubi, ai, 0, leb[1]);  in process_lvol()
471 		ubi_msg(ubi, "volume table was restored");  in process_lvol()
491 static struct ubi_vtbl_record *create_empty_lvol(struct ubi_device *ubi,  in create_empty_lvol()  argument
497 	vtbl = vzalloc(ubi->vtbl_size);  in create_empty_lvol()
501 	for (i = 0; i < ubi->vtbl_slots; i++)  in create_empty_lvol()
507 		err = create_vtbl(ubi, ai, i, vtbl);  in create_empty_lvol()
527 static int init_volumes(struct ubi_device *ubi,  in init_volumes()  argument
535 	for (i = 0; i < ubi->vtbl_slots; i++) {  in init_volumes()
552 		vol->usable_leb_size = ubi->leb_size - vol->data_pad;  in init_volumes()
559 			if (ubi->autoresize_vol_id != -1) {  in init_volumes()
560 				ubi_err(ubi, "more than one auto-resize volume (%d and %d)",  in init_volumes()
561 					ubi->autoresize_vol_id, i);  in init_volumes()
566 			ubi->autoresize_vol_id = i;  in init_volumes()
569 		ubi_assert(!ubi->volumes[i]);  in init_volumes()
570 		ubi->volumes[i] = vol;  in init_volumes()
571 		ubi->vol_count += 1;  in init_volumes()
572 		vol->ubi = ubi;  in init_volumes()
606 			ubi_warn(ubi, "static volume %d misses %d LEBs - corrupted",  in init_volumes()
629 	vol->usable_leb_size = ubi->leb_size;  in init_volumes()
633 		(long long)vol->used_ebs * (ubi->leb_size - vol->data_pad);  in init_volumes()
637 	ubi_assert(!ubi->volumes[i]);  in init_volumes()
638 	ubi->volumes[vol_id2idx(ubi, vol->vol_id)] = vol;  in init_volumes()
640 	ubi->vol_count += 1;  in init_volumes()
641 	vol->ubi = ubi;  in init_volumes()
643 	if (reserved_pebs > ubi->avail_pebs) {  in init_volumes()
644 		ubi_err(ubi, "not enough PEBs, required %d, available %d",  in init_volumes()
645 			reserved_pebs, ubi->avail_pebs);  in init_volumes()
646 		if (ubi->corr_peb_count)  in init_volumes()
647 			ubi_err(ubi, "%d PEBs are corrupted and not used",  in init_volumes()
648 				ubi->corr_peb_count);  in init_volumes()
651 	ubi->rsvd_pebs += reserved_pebs;  in init_volumes()
652 	ubi->avail_pebs -= reserved_pebs;  in init_volumes()
693 	ubi_err(vol->ubi, "bad attaching information, error %d", err);  in check_av()
709 static int check_attaching_info(const struct ubi_device *ubi,  in check_attaching_info()  argument
716 	if (ai->vols_found > UBI_INT_VOL_COUNT + ubi->vtbl_slots) {  in check_attaching_info()
717 		ubi_err(ubi, "found %d volumes while attaching, maximum is %d + %d",  in check_attaching_info()
718 			ai->vols_found, UBI_INT_VOL_COUNT, ubi->vtbl_slots);  in check_attaching_info()
722 	if (ai->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&  in check_attaching_info()
724 		ubi_err(ubi, "too large volume ID %d found",  in check_attaching_info()
729 	for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {  in check_attaching_info()
733 		vol = ubi->volumes[i];  in check_attaching_info()
741 			ubi_assert(i < ubi->vtbl_slots);  in check_attaching_info()
753 			ubi_msg(ubi, "finish volume %d removal", av->vol_id);  in check_attaching_info()
774 int ubi_read_volume_table(struct ubi_device *ubi, struct ubi_attach_info *ai)  in ubi_read_volume_table()  argument
785 	ubi->vtbl_slots = ubi->leb_size / UBI_VTBL_RECORD_SIZE;  in ubi_read_volume_table()
786 	if (ubi->vtbl_slots > UBI_MAX_VOLUMES)  in ubi_read_volume_table()
787 		ubi->vtbl_slots = UBI_MAX_VOLUMES;  in ubi_read_volume_table()
789 	ubi->vtbl_size = ubi->vtbl_slots * UBI_VTBL_RECORD_SIZE;  in ubi_read_volume_table()
790 	ubi->vtbl_size = ALIGN(ubi->vtbl_size, ubi->min_io_size);  in ubi_read_volume_table()
803 			ubi->vtbl = create_empty_lvol(ubi, ai);  in ubi_read_volume_table()
804 			if (IS_ERR(ubi->vtbl))  in ubi_read_volume_table()
805 				return PTR_ERR(ubi->vtbl);  in ubi_read_volume_table()
807 			ubi_err(ubi, "the layout volume was not found");  in ubi_read_volume_table()
813 			ubi_err(ubi, "too many LEBs (%d) in layout volume",  in ubi_read_volume_table()
818 		ubi->vtbl = process_lvol(ubi, ai, av);  in ubi_read_volume_table()
819 		if (IS_ERR(ubi->vtbl))  in ubi_read_volume_table()
820 			return PTR_ERR(ubi->vtbl);  in ubi_read_volume_table()
823 	ubi->avail_pebs = ubi->good_peb_count - ubi->corr_peb_count;  in ubi_read_volume_table()
829 	err = init_volumes(ubi, ai, ubi->vtbl);  in ubi_read_volume_table()
837 	err = check_attaching_info(ubi, ai);  in ubi_read_volume_table()
844 	vfree(ubi->vtbl);  in ubi_read_volume_table()
845 	for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {  in ubi_read_volume_table()
846 		kfree(ubi->volumes[i]);  in ubi_read_volume_table()
847 		ubi->volumes[i] = NULL;  in ubi_read_volume_table()
856 static void self_vtbl_check(const struct ubi_device *ubi)  in self_vtbl_check()  argument
858 	if (!ubi_dbg_chk_gen(ubi))  in self_vtbl_check()
861 	if (vtbl_check(ubi, ubi->vtbl)) {  in self_vtbl_check()
862 		ubi_err(ubi, "self-check failed");  in self_vtbl_check()