mtd/ubi/kapi.c

64  * @vol: volume description object
67 void ubi_do_get_volume_info(struct ubi_device *ubi, struct ubi_volume *vol,
70 	vi->vol_id = vol->vol_id;
72 	vi->size = vol->reserved_pebs;
73 	vi->used_bytes = vol->used_bytes;
74 	vi->vol_type = vol->vol_type;
75 	vi->corrupted = vol->corrupted;
76 	vi->upd_marker = vol->upd_marker;
77 	vi->alignment = vol->alignment;
78 	vi->usable_leb_size = vol->usable_leb_size;
79 	vi->name_len = vol->name_len;
80 	vi->name = vol->name;
81 	vi->cdev = vol->cdev.dev;
82 	vi->dev = &vol->dev;
93 	ubi_do_get_volume_info(desc->vol->ubi, desc->vol, vi);
120 	struct ubi_volume *vol;
154 	vol = ubi->volumes[vol_id];
155 	if (!vol || vol->is_dead)
161 		if (vol->exclusive)
163 		vol->readers += 1;
167 		if (vol->exclusive || vol->writers > 0)
169 		vol->writers += 1;
173 		if (vol->exclusive || vol->writers || vol->readers ||
174 		    vol->metaonly)
176 		vol->exclusive = 1;
180 		if (vol->metaonly || vol->exclusive)
182 		vol->metaonly = 1;
185 	get_device(&vol->dev);
186 	vol->ref_count += 1;
189 	desc->vol = vol;
193 	if (!vol->checked && !vol->skip_check) {
204 			vol->corrupted = 1;
206 		vol->checked = 1;
259 		struct ubi_volume *vol = ubi->volumes[i];
261 		if (vol && len == vol->name_len && !strcmp(name, vol->name)) {
348 	struct ubi_volume *vol = desc->vol;
349 	struct ubi_device *ubi = vol->ubi;
352 		ubi->ubi_num, vol->vol_id, desc->mode);
357 		vol->readers -= 1;
360 		vol->writers -= 1;
363 		vol->exclusive = 0;
366 		vol->metaonly = 0;
369 	vol->ref_count -= 1;
373 	put_device(&vol->dev);
392 	struct ubi_volume *vol = desc->vol;
393 	struct ubi_device *ubi = vol->ubi;
394 	int vol_id = vol->vol_id;
397 	    lnum >= vol->used_ebs || offset < 0 || len < 0 ||
398 	    offset + len > vol->usable_leb_size)
401 	if (vol->vol_type == UBI_STATIC_VOLUME) {
402 		if (vol->used_ebs == 0)
405 		if (lnum == vol->used_ebs - 1 &&
406 		    offset + len > vol->last_eb_bytes)
410 	if (vol->upd_marker)
446 	struct ubi_volume *vol = desc->vol;
447 	struct ubi_device *ubi = vol->ubi;
448 	int err, vol_id = vol->vol_id;
459 	err = ubi_eba_read_leb(ubi, vol, lnum, buf, offset, len, check);
460 	if (err && mtd_is_eccerr(err) && vol->vol_type == UBI_STATIC_VOLUME) {
462 		vol->corrupted = 1;
486 	struct ubi_volume *vol = desc->vol;
487 	struct ubi_device *ubi = vol->ubi;
488 	int err, vol_id = vol->vol_id;
499 	err = ubi_eba_read_leb_sg(ubi, vol, sgl, lnum, offset, len, check);
500 	if (err && mtd_is_eccerr(err) && vol->vol_type == UBI_STATIC_VOLUME) {
502 		vol->corrupted = 1;
537 	struct ubi_volume *vol = desc->vol;
538 	struct ubi_device *ubi = vol->ubi;
539 	int vol_id = vol->vol_id;
546 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
549 	if (!ubi_leb_valid(vol, lnum) || offset < 0 || len < 0 ||
550 	    offset + len > vol->usable_leb_size ||
554 	if (vol->upd_marker)
560 	return ubi_eba_write_leb(ubi, vol, lnum, buf, offset, len);
582 	struct ubi_volume *vol = desc->vol;
583 	struct ubi_device *ubi = vol->ubi;
584 	int vol_id = vol->vol_id;
591 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
594 	if (!ubi_leb_valid(vol, lnum) || len < 0 ||
595 	    len > vol->usable_leb_size || len & (ubi->min_io_size - 1))
598 	if (vol->upd_marker)
604 	return ubi_eba_atomic_leb_change(ubi, vol, lnum, buf, len);
622 	struct ubi_volume *vol = desc->vol;
623 	struct ubi_device *ubi = vol->ubi;
626 	dbg_gen("erase LEB %d:%d", vol->vol_id, lnum);
628 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
631 	if (!ubi_leb_valid(vol, lnum))
634 	if (vol->upd_marker)
637 	err = ubi_eba_unmap_leb(ubi, vol, lnum);
641 	return ubi_wl_flush(ubi, vol->vol_id, lnum);
683 	struct ubi_volume *vol = desc->vol;
684 	struct ubi_device *ubi = vol->ubi;
686 	dbg_gen("unmap LEB %d:%d", vol->vol_id, lnum);
688 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
691 	if (!ubi_leb_valid(vol, lnum))
694 	if (vol->upd_marker)
697 	return ubi_eba_unmap_leb(ubi, vol, lnum);
719 	struct ubi_volume *vol = desc->vol;
720 	struct ubi_device *ubi = vol->ubi;
722 	dbg_gen("map LEB %d:%d", vol->vol_id, lnum);
724 	if (desc->mode == UBI_READONLY || vol->vol_type == UBI_STATIC_VOLUME)
727 	if (!ubi_leb_valid(vol, lnum))
730 	if (vol->upd_marker)
733 	if (ubi_eba_is_mapped(vol, lnum))
736 	return ubi_eba_write_leb(ubi, vol, lnum, NULL, 0, 0);
758 	struct ubi_volume *vol = desc->vol;
760 	dbg_gen("test LEB %d:%d", vol->vol_id, lnum);
762 	if (!ubi_leb_valid(vol, lnum))
765 	if (vol->upd_marker)
768 	return ubi_eba_is_mapped(vol, lnum);