2 * Copyright (c) International Business Machines Corp., 2006
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
12 * the GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * Author: Artem Bityutskiy (Битюцкий Артём)
22 * This file contains implementation of volume creation, deletion, updating and
26 #include <linux/err.h>
27 #include <linux/math64.h>
28 #include <linux/slab.h>
29 #include <linux/export.h>
32 static int self_check_volumes(struct ubi_device *ubi);
34 static ssize_t vol_attribute_show(struct device *dev,
35 struct device_attribute *attr, char *buf);
37 /* Device attributes corresponding to files in '/<sysfs>/class/ubi/ubiX_Y' */
38 static struct device_attribute attr_vol_reserved_ebs =
39 __ATTR(reserved_ebs, S_IRUGO, vol_attribute_show, NULL);
40 static struct device_attribute attr_vol_type =
41 __ATTR(type, S_IRUGO, vol_attribute_show, NULL);
42 static struct device_attribute attr_vol_name =
43 __ATTR(name, S_IRUGO, vol_attribute_show, NULL);
44 static struct device_attribute attr_vol_corrupted =
45 __ATTR(corrupted, S_IRUGO, vol_attribute_show, NULL);
46 static struct device_attribute attr_vol_alignment =
47 __ATTR(alignment, S_IRUGO, vol_attribute_show, NULL);
48 static struct device_attribute attr_vol_usable_eb_size =
49 __ATTR(usable_eb_size, S_IRUGO, vol_attribute_show, NULL);
50 static struct device_attribute attr_vol_data_bytes =
51 __ATTR(data_bytes, S_IRUGO, vol_attribute_show, NULL);
52 static struct device_attribute attr_vol_upd_marker =
53 __ATTR(upd_marker, S_IRUGO, vol_attribute_show, NULL);
56 * "Show" method for files in '/<sysfs>/class/ubi/ubiX_Y/'.
58 * Consider a situation:
59 * A. process 1 opens a sysfs file related to volume Y, say
60 * /<sysfs>/class/ubi/ubiX_Y/reserved_ebs;
61 * B. process 2 removes volume Y;
62 * C. process 1 starts reading the /<sysfs>/class/ubi/ubiX_Y/reserved_ebs file;
64 * In this situation, this function will return %-ENODEV because it will find
65 * out that the volume was removed from the @ubi->volumes array.
67 static ssize_t vol_attribute_show(struct device *dev,
68 struct device_attribute *attr, char *buf)
71 struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
72 struct ubi_device *ubi;
74 ubi = ubi_get_device(vol->ubi->ubi_num);
78 spin_lock(&ubi->volumes_lock);
79 if (!ubi->volumes[vol->vol_id]) {
80 spin_unlock(&ubi->volumes_lock);
84 /* Take a reference to prevent volume removal */
86 spin_unlock(&ubi->volumes_lock);
88 if (attr == &attr_vol_reserved_ebs)
89 ret = sprintf(buf, "%d\n", vol->reserved_pebs);
90 else if (attr == &attr_vol_type) {
93 if (vol->vol_type == UBI_DYNAMIC_VOLUME)
97 ret = sprintf(buf, "%s\n", tp);
98 } else if (attr == &attr_vol_name)
99 ret = sprintf(buf, "%s\n", vol->name);
100 else if (attr == &attr_vol_corrupted)
101 ret = sprintf(buf, "%d\n", vol->corrupted);
102 else if (attr == &attr_vol_alignment)
103 ret = sprintf(buf, "%d\n", vol->alignment);
104 else if (attr == &attr_vol_usable_eb_size)
105 ret = sprintf(buf, "%d\n", vol->usable_leb_size);
106 else if (attr == &attr_vol_data_bytes)
107 ret = sprintf(buf, "%lld\n", vol->used_bytes);
108 else if (attr == &attr_vol_upd_marker)
109 ret = sprintf(buf, "%d\n", vol->upd_marker);
111 /* This must be a bug */
114 /* We've done the operation, drop volume and UBI device references */
115 spin_lock(&ubi->volumes_lock);
117 ubi_assert(vol->ref_count >= 0);
118 spin_unlock(&ubi->volumes_lock);
123 static struct attribute *volume_dev_attrs[] = {
124 &attr_vol_reserved_ebs.attr,
127 &attr_vol_corrupted.attr,
128 &attr_vol_alignment.attr,
129 &attr_vol_usable_eb_size.attr,
130 &attr_vol_data_bytes.attr,
131 &attr_vol_upd_marker.attr,
134 ATTRIBUTE_GROUPS(volume_dev);
136 /* Release method for volume devices */
137 static void vol_release(struct device *dev)
139 struct ubi_volume *vol = container_of(dev, struct ubi_volume, dev);
141 ubi_eba_replace_table(vol, NULL);
142 ubi_fastmap_destroy_checkmap(vol);
147 * ubi_create_volume - create volume.
148 * @ubi: UBI device description object
149 * @req: volume creation request
151 * This function creates volume described by @req. If @req->vol_id id
152 * %UBI_VOL_NUM_AUTO, this function automatically assign ID to the new volume
153 * and saves it in @req->vol_id. Returns zero in case of success and a negative
154 * error code in case of failure. Note, the caller has to have the
155 * @ubi->device_mutex locked.
157 int ubi_create_volume(struct ubi_device *ubi, struct ubi_mkvol_req *req)
159 int i, err, vol_id = req->vol_id;
160 struct ubi_volume *vol;
161 struct ubi_vtbl_record vtbl_rec;
162 struct ubi_eba_table *eba_tbl = NULL;
167 vol = kzalloc(sizeof(struct ubi_volume), GFP_KERNEL);
171 device_initialize(&vol->dev);
172 vol->dev.release = vol_release;
173 vol->dev.parent = &ubi->dev;
174 vol->dev.class = &ubi_class;
175 vol->dev.groups = volume_dev_groups;
177 if (req->flags & UBI_VOL_SKIP_CRC_CHECK_FLG)
180 spin_lock(&ubi->volumes_lock);
181 if (vol_id == UBI_VOL_NUM_AUTO) {
182 /* Find unused volume ID */
183 dbg_gen("search for vacant volume ID");
184 for (i = 0; i < ubi->vtbl_slots; i++)
185 if (!ubi->volumes[i]) {
190 if (vol_id == UBI_VOL_NUM_AUTO) {
191 ubi_err(ubi, "out of volume IDs");
195 req->vol_id = vol_id;
198 dbg_gen("create device %d, volume %d, %llu bytes, type %d, name %s",
199 ubi->ubi_num, vol_id, (unsigned long long)req->bytes,
200 (int)req->vol_type, req->name);
202 /* Ensure that this volume does not exist */
204 if (ubi->volumes[vol_id]) {
205 ubi_err(ubi, "volume %d already exists", vol_id);
209 /* Ensure that the name is unique */
210 for (i = 0; i < ubi->vtbl_slots; i++)
211 if (ubi->volumes[i] &&
212 ubi->volumes[i]->name_len == req->name_len &&
213 !strcmp(ubi->volumes[i]->name, req->name)) {
214 ubi_err(ubi, "volume \"%s\" exists (ID %d)",
219 /* Calculate how many eraseblocks are requested */
220 vol->usable_leb_size = ubi->leb_size - ubi->leb_size % req->alignment;
221 vol->reserved_pebs = div_u64(req->bytes + vol->usable_leb_size - 1,
222 vol->usable_leb_size);
224 /* Reserve physical eraseblocks */
225 if (vol->reserved_pebs > ubi->avail_pebs) {
226 ubi_err(ubi, "not enough PEBs, only %d available",
228 if (ubi->corr_peb_count)
229 ubi_err(ubi, "%d PEBs are corrupted and not used",
230 ubi->corr_peb_count);
234 ubi->avail_pebs -= vol->reserved_pebs;
235 ubi->rsvd_pebs += vol->reserved_pebs;
236 spin_unlock(&ubi->volumes_lock);
238 vol->vol_id = vol_id;
239 vol->alignment = req->alignment;
240 vol->data_pad = ubi->leb_size % vol->alignment;
241 vol->vol_type = req->vol_type;
242 vol->name_len = req->name_len;
243 memcpy(vol->name, req->name, vol->name_len);
247 * Finish all pending erases because there may be some LEBs belonging
248 * to the same volume ID.
250 err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
254 eba_tbl = ubi_eba_create_table(vol, vol->reserved_pebs);
255 if (IS_ERR(eba_tbl)) {
256 err = PTR_ERR(eba_tbl);
260 ubi_eba_replace_table(vol, eba_tbl);
262 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
263 vol->used_ebs = vol->reserved_pebs;
264 vol->last_eb_bytes = vol->usable_leb_size;
266 (long long)vol->used_ebs * vol->usable_leb_size;
268 vol->used_ebs = div_u64_rem(vol->used_bytes,
269 vol->usable_leb_size,
270 &vol->last_eb_bytes);
271 if (vol->last_eb_bytes != 0)
274 vol->last_eb_bytes = vol->usable_leb_size;
277 /* Make volume "available" before it becomes accessible via sysfs */
278 spin_lock(&ubi->volumes_lock);
279 ubi->volumes[vol_id] = vol;
281 spin_unlock(&ubi->volumes_lock);
283 /* Register character device for the volume */
284 cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
285 vol->cdev.owner = THIS_MODULE;
287 vol->dev.devt = MKDEV(MAJOR(ubi->cdev.dev), vol_id + 1);
288 dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
289 err = cdev_device_add(&vol->cdev, &vol->dev);
291 ubi_err(ubi, "cannot add device");
295 /* Fill volume table record */
296 memset(&vtbl_rec, 0, sizeof(struct ubi_vtbl_record));
297 vtbl_rec.reserved_pebs = cpu_to_be32(vol->reserved_pebs);
298 vtbl_rec.alignment = cpu_to_be32(vol->alignment);
299 vtbl_rec.data_pad = cpu_to_be32(vol->data_pad);
300 vtbl_rec.name_len = cpu_to_be16(vol->name_len);
301 if (vol->vol_type == UBI_DYNAMIC_VOLUME)
302 vtbl_rec.vol_type = UBI_VID_DYNAMIC;
304 vtbl_rec.vol_type = UBI_VID_STATIC;
307 vtbl_rec.flags |= UBI_VTBL_SKIP_CRC_CHECK_FLG;
309 memcpy(vtbl_rec.name, vol->name, vol->name_len);
311 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
315 ubi_volume_notify(ubi, vol, UBI_VOLUME_ADDED);
316 self_check_volumes(ubi);
321 * We have registered our device, we should not free the volume
322 * description object in this function in case of an error - it is
323 * freed by the release function.
325 cdev_device_del(&vol->cdev, &vol->dev);
327 spin_lock(&ubi->volumes_lock);
328 ubi->volumes[vol_id] = NULL;
330 spin_unlock(&ubi->volumes_lock);
331 ubi_eba_destroy_table(eba_tbl);
333 spin_lock(&ubi->volumes_lock);
334 ubi->rsvd_pebs -= vol->reserved_pebs;
335 ubi->avail_pebs += vol->reserved_pebs;
337 spin_unlock(&ubi->volumes_lock);
338 put_device(&vol->dev);
339 ubi_err(ubi, "cannot create volume %d, error %d", vol_id, err);
344 * ubi_remove_volume - remove volume.
345 * @desc: volume descriptor
346 * @no_vtbl: do not change volume table if not zero
348 * This function removes volume described by @desc. The volume has to be opened
349 * in "exclusive" mode. Returns zero in case of success and a negative error
350 * code in case of failure. The caller has to have the @ubi->device_mutex
353 int ubi_remove_volume(struct ubi_volume_desc *desc, int no_vtbl)
355 struct ubi_volume *vol = desc->vol;
356 struct ubi_device *ubi = vol->ubi;
357 int i, err, vol_id = vol->vol_id, reserved_pebs = vol->reserved_pebs;
359 dbg_gen("remove device %d, volume %d", ubi->ubi_num, vol_id);
360 ubi_assert(desc->mode == UBI_EXCLUSIVE);
361 ubi_assert(vol == ubi->volumes[vol_id]);
366 spin_lock(&ubi->volumes_lock);
367 if (vol->ref_count > 1) {
369 * The volume is busy, probably someone is reading one of its
375 ubi->volumes[vol_id] = NULL;
376 spin_unlock(&ubi->volumes_lock);
379 err = ubi_change_vtbl_record(ubi, vol_id, NULL);
384 for (i = 0; i < vol->reserved_pebs; i++) {
385 err = ubi_eba_unmap_leb(ubi, vol, i);
390 cdev_device_del(&vol->cdev, &vol->dev);
391 put_device(&vol->dev);
393 spin_lock(&ubi->volumes_lock);
394 ubi->rsvd_pebs -= reserved_pebs;
395 ubi->avail_pebs += reserved_pebs;
396 ubi_update_reserved(ubi);
398 spin_unlock(&ubi->volumes_lock);
400 ubi_volume_notify(ubi, vol, UBI_VOLUME_REMOVED);
402 self_check_volumes(ubi);
407 ubi_err(ubi, "cannot remove volume %d, error %d", vol_id, err);
408 spin_lock(&ubi->volumes_lock);
409 ubi->volumes[vol_id] = vol;
411 spin_unlock(&ubi->volumes_lock);
416 * ubi_resize_volume - re-size volume.
417 * @desc: volume descriptor
418 * @reserved_pebs: new size in physical eraseblocks
420 * This function re-sizes the volume and returns zero in case of success, and a
421 * negative error code in case of failure. The caller has to have the
422 * @ubi->device_mutex locked.
424 int ubi_resize_volume(struct ubi_volume_desc *desc, int reserved_pebs)
427 struct ubi_volume *vol = desc->vol;
428 struct ubi_device *ubi = vol->ubi;
429 struct ubi_vtbl_record vtbl_rec;
430 struct ubi_eba_table *new_eba_tbl = NULL;
431 int vol_id = vol->vol_id;
436 dbg_gen("re-size device %d, volume %d to from %d to %d PEBs",
437 ubi->ubi_num, vol_id, vol->reserved_pebs, reserved_pebs);
439 if (vol->vol_type == UBI_STATIC_VOLUME &&
440 reserved_pebs < vol->used_ebs) {
441 ubi_err(ubi, "too small size %d, %d LEBs contain data",
442 reserved_pebs, vol->used_ebs);
446 /* If the size is the same, we have nothing to do */
447 if (reserved_pebs == vol->reserved_pebs)
450 new_eba_tbl = ubi_eba_create_table(vol, reserved_pebs);
451 if (IS_ERR(new_eba_tbl))
452 return PTR_ERR(new_eba_tbl);
454 spin_lock(&ubi->volumes_lock);
455 if (vol->ref_count > 1) {
456 spin_unlock(&ubi->volumes_lock);
460 spin_unlock(&ubi->volumes_lock);
462 /* Reserve physical eraseblocks */
463 pebs = reserved_pebs - vol->reserved_pebs;
465 spin_lock(&ubi->volumes_lock);
466 if (pebs > ubi->avail_pebs) {
467 ubi_err(ubi, "not enough PEBs: requested %d, available %d",
468 pebs, ubi->avail_pebs);
469 if (ubi->corr_peb_count)
470 ubi_err(ubi, "%d PEBs are corrupted and not used",
471 ubi->corr_peb_count);
472 spin_unlock(&ubi->volumes_lock);
476 ubi->avail_pebs -= pebs;
477 ubi->rsvd_pebs += pebs;
478 ubi_eba_copy_table(vol, new_eba_tbl, vol->reserved_pebs);
479 ubi_eba_replace_table(vol, new_eba_tbl);
480 spin_unlock(&ubi->volumes_lock);
484 for (i = 0; i < -pebs; i++) {
485 err = ubi_eba_unmap_leb(ubi, vol, reserved_pebs + i);
489 spin_lock(&ubi->volumes_lock);
490 ubi->rsvd_pebs += pebs;
491 ubi->avail_pebs -= pebs;
492 ubi_update_reserved(ubi);
493 ubi_eba_copy_table(vol, new_eba_tbl, reserved_pebs);
494 ubi_eba_replace_table(vol, new_eba_tbl);
495 spin_unlock(&ubi->volumes_lock);
499 * When we shrink a volume we have to flush all pending (erase) work.
500 * Otherwise it can happen that upon next attach UBI finds a LEB with
501 * lnum > highest_lnum and refuses to attach.
504 err = ubi_wl_flush(ubi, vol_id, UBI_ALL);
509 /* Change volume table record */
510 vtbl_rec = ubi->vtbl[vol_id];
511 vtbl_rec.reserved_pebs = cpu_to_be32(reserved_pebs);
512 err = ubi_change_vtbl_record(ubi, vol_id, &vtbl_rec);
516 vol->reserved_pebs = reserved_pebs;
517 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
518 vol->used_ebs = reserved_pebs;
519 vol->last_eb_bytes = vol->usable_leb_size;
521 (long long)vol->used_ebs * vol->usable_leb_size;
524 ubi_volume_notify(ubi, vol, UBI_VOLUME_RESIZED);
525 self_check_volumes(ubi);
530 spin_lock(&ubi->volumes_lock);
531 ubi->rsvd_pebs -= pebs;
532 ubi->avail_pebs += pebs;
533 spin_unlock(&ubi->volumes_lock);
541 * ubi_rename_volumes - re-name UBI volumes.
542 * @ubi: UBI device description object
543 * @rename_list: list of &struct ubi_rename_entry objects
545 * This function re-names or removes volumes specified in the re-name list.
546 * Returns zero in case of success and a negative error code in case of
549 int ubi_rename_volumes(struct ubi_device *ubi, struct list_head *rename_list)
552 struct ubi_rename_entry *re;
554 err = ubi_vtbl_rename_volumes(ubi, rename_list);
558 list_for_each_entry(re, rename_list, list) {
560 err = ubi_remove_volume(re->desc, 1);
564 struct ubi_volume *vol = re->desc->vol;
566 spin_lock(&ubi->volumes_lock);
567 vol->name_len = re->new_name_len;
568 memcpy(vol->name, re->new_name, re->new_name_len + 1);
569 spin_unlock(&ubi->volumes_lock);
570 ubi_volume_notify(ubi, vol, UBI_VOLUME_RENAMED);
575 self_check_volumes(ubi);
580 * ubi_add_volume - add volume.
581 * @ubi: UBI device description object
582 * @vol: volume description object
584 * This function adds an existing volume and initializes all its data
585 * structures. Returns zero in case of success and a negative error code in
588 int ubi_add_volume(struct ubi_device *ubi, struct ubi_volume *vol)
590 int err, vol_id = vol->vol_id;
593 dbg_gen("add volume %d", vol_id);
595 /* Register character device for the volume */
596 cdev_init(&vol->cdev, &ubi_vol_cdev_operations);
597 vol->cdev.owner = THIS_MODULE;
598 dev = MKDEV(MAJOR(ubi->cdev.dev), vol->vol_id + 1);
599 err = cdev_add(&vol->cdev, dev, 1);
601 ubi_err(ubi, "cannot add character device for volume %d, error %d",
606 vol->dev.release = vol_release;
607 vol->dev.parent = &ubi->dev;
609 vol->dev.class = &ubi_class;
610 vol->dev.groups = volume_dev_groups;
611 dev_set_name(&vol->dev, "%s_%d", ubi->ubi_name, vol->vol_id);
612 err = device_register(&vol->dev);
616 self_check_volumes(ubi);
620 cdev_del(&vol->cdev);
625 * ubi_free_volume - free volume.
626 * @ubi: UBI device description object
627 * @vol: volume description object
629 * This function frees all resources for volume @vol but does not remove it.
630 * Used only when the UBI device is detached.
632 void ubi_free_volume(struct ubi_device *ubi, struct ubi_volume *vol)
634 dbg_gen("free volume %d", vol->vol_id);
636 ubi->volumes[vol->vol_id] = NULL;
637 cdev_del(&vol->cdev);
638 device_unregister(&vol->dev);
642 * self_check_volume - check volume information.
643 * @ubi: UBI device description object
646 * Returns zero if volume is all right and a a negative error code if not.
648 static int self_check_volume(struct ubi_device *ubi, int vol_id)
650 int idx = vol_id2idx(ubi, vol_id);
651 int reserved_pebs, alignment, data_pad, vol_type, name_len, upd_marker;
652 const struct ubi_volume *vol;
656 spin_lock(&ubi->volumes_lock);
657 reserved_pebs = be32_to_cpu(ubi->vtbl[vol_id].reserved_pebs);
658 vol = ubi->volumes[idx];
662 ubi_err(ubi, "no volume info, but volume exists");
665 spin_unlock(&ubi->volumes_lock);
669 if (vol->reserved_pebs < 0 || vol->alignment < 0 || vol->data_pad < 0 ||
671 ubi_err(ubi, "negative values");
674 if (vol->alignment > ubi->leb_size || vol->alignment == 0) {
675 ubi_err(ubi, "bad alignment");
679 n = vol->alignment & (ubi->min_io_size - 1);
680 if (vol->alignment != 1 && n) {
681 ubi_err(ubi, "alignment is not multiple of min I/O unit");
685 n = ubi->leb_size % vol->alignment;
686 if (vol->data_pad != n) {
687 ubi_err(ubi, "bad data_pad, has to be %lld", n);
691 if (vol->vol_type != UBI_DYNAMIC_VOLUME &&
692 vol->vol_type != UBI_STATIC_VOLUME) {
693 ubi_err(ubi, "bad vol_type");
697 if (vol->upd_marker && vol->corrupted) {
698 ubi_err(ubi, "update marker and corrupted simultaneously");
702 if (vol->reserved_pebs > ubi->good_peb_count) {
703 ubi_err(ubi, "too large reserved_pebs");
707 n = ubi->leb_size - vol->data_pad;
708 if (vol->usable_leb_size != ubi->leb_size - vol->data_pad) {
709 ubi_err(ubi, "bad usable_leb_size, has to be %lld", n);
713 if (vol->name_len > UBI_VOL_NAME_MAX) {
714 ubi_err(ubi, "too long volume name, max is %d",
719 n = strnlen(vol->name, vol->name_len + 1);
720 if (n != vol->name_len) {
721 ubi_err(ubi, "bad name_len %lld", n);
725 n = (long long)vol->used_ebs * vol->usable_leb_size;
726 if (vol->vol_type == UBI_DYNAMIC_VOLUME) {
727 if (vol->corrupted) {
728 ubi_err(ubi, "corrupted dynamic volume");
731 if (vol->used_ebs != vol->reserved_pebs) {
732 ubi_err(ubi, "bad used_ebs");
735 if (vol->last_eb_bytes != vol->usable_leb_size) {
736 ubi_err(ubi, "bad last_eb_bytes");
739 if (vol->used_bytes != n) {
740 ubi_err(ubi, "bad used_bytes");
744 if (vol->skip_check) {
745 ubi_err(ubi, "bad skip_check");
749 if (vol->used_ebs < 0 || vol->used_ebs > vol->reserved_pebs) {
750 ubi_err(ubi, "bad used_ebs");
753 if (vol->last_eb_bytes < 0 ||
754 vol->last_eb_bytes > vol->usable_leb_size) {
755 ubi_err(ubi, "bad last_eb_bytes");
758 if (vol->used_bytes < 0 || vol->used_bytes > n ||
759 vol->used_bytes < n - vol->usable_leb_size) {
760 ubi_err(ubi, "bad used_bytes");
765 alignment = be32_to_cpu(ubi->vtbl[vol_id].alignment);
766 data_pad = be32_to_cpu(ubi->vtbl[vol_id].data_pad);
767 name_len = be16_to_cpu(ubi->vtbl[vol_id].name_len);
768 upd_marker = ubi->vtbl[vol_id].upd_marker;
769 name = &ubi->vtbl[vol_id].name[0];
770 if (ubi->vtbl[vol_id].vol_type == UBI_VID_DYNAMIC)
771 vol_type = UBI_DYNAMIC_VOLUME;
773 vol_type = UBI_STATIC_VOLUME;
775 if (alignment != vol->alignment || data_pad != vol->data_pad ||
776 upd_marker != vol->upd_marker || vol_type != vol->vol_type ||
777 name_len != vol->name_len || strncmp(name, vol->name, name_len)) {
778 ubi_err(ubi, "volume info is different");
782 spin_unlock(&ubi->volumes_lock);
786 ubi_err(ubi, "self-check failed for volume %d", vol_id);
788 ubi_dump_vol_info(vol);
789 ubi_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
791 spin_unlock(&ubi->volumes_lock);
796 * self_check_volumes - check information about all volumes.
797 * @ubi: UBI device description object
799 * Returns zero if volumes are all right and a a negative error code if not.
801 static int self_check_volumes(struct ubi_device *ubi)
805 if (!ubi_dbg_chk_gen(ubi))
808 for (i = 0; i < ubi->vtbl_slots; i++) {
809 err = self_check_volume(ubi, i);