}
/**
- * vtbl_check - check if volume table is not corrupted and contains sensible
- * data.
+ * ubi_vtbl_rename_volumes - rename UBI volumes in the volume table.
+ * @ubi: UBI device description object
+ * @rename_list: list of &struct ubi_rename_entry objects
+ *
+ * This function re-names multiple volumes specified in @req in the volume
+ * table. Returns zero in case of success and a negative error code in case of
+ * failure.
+ */
+int ubi_vtbl_rename_volumes(struct ubi_device *ubi,
+ struct list_head *rename_list)
+{
+ int i, err;
+ struct ubi_rename_entry *re;
+ struct ubi_volume *layout_vol;
+
+ list_for_each_entry(re, rename_list, list) {
+ uint32_t crc;
+ struct ubi_volume *vol = re->desc->vol;
+ struct ubi_vtbl_record *vtbl_rec = &ubi->vtbl[vol->vol_id];
+
+ if (re->remove) {
+ memcpy(vtbl_rec, &empty_vtbl_record,
+ sizeof(struct ubi_vtbl_record));
+ continue;
+ }
+
+ vtbl_rec->name_len = cpu_to_be16(re->new_name_len);
+ memcpy(vtbl_rec->name, re->new_name, re->new_name_len);
+ memset(vtbl_rec->name + re->new_name_len, 0,
+ UBI_VOL_NAME_MAX + 1 - re->new_name_len);
+ crc = crc32(UBI_CRC32_INIT, vtbl_rec,
+ UBI_VTBL_RECORD_SIZE_CRC);
+ vtbl_rec->crc = cpu_to_be32(crc);
+ }
+
+ layout_vol = ubi->volumes[vol_id2idx(ubi, UBI_LAYOUT_VOLUME_ID)];
+ for (i = 0; i < UBI_LAYOUT_VOLUME_EBS; i++) {
+ err = ubi_eba_unmap_leb(ubi, layout_vol, i);
+ if (err)
+ return err;
+
+ err = ubi_eba_write_leb(ubi, layout_vol, i, ubi->vtbl, 0,
+ ubi->vtbl_size, UBI_LONGTERM);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+/**
+ * vtbl_check - check if volume table is not corrupted and sensible.
* @ubi: UBI device description object
* @vtbl: volume table
*
const struct ubi_vtbl_record *vtbl)
{
int i, n, reserved_pebs, alignment, data_pad, vol_type, name_len;
- int upd_marker;
+ int upd_marker, err;
uint32_t crc;
const char *name;
if (reserved_pebs == 0) {
if (memcmp(&vtbl[i], &empty_vtbl_record,
UBI_VTBL_RECORD_SIZE)) {
- dbg_err("bad empty record");
+ err = 2;
goto bad;
}
continue;
if (reserved_pebs < 0 || alignment < 0 || data_pad < 0 ||
name_len < 0) {
- dbg_err("negative values");
+ err = 3;
goto bad;
}
if (alignment > ubi->leb_size || alignment == 0) {
- dbg_err("bad alignment");
+ err = 4;
goto bad;
}
- n = alignment % ubi->min_io_size;
+ n = alignment & (ubi->min_io_size - 1);
if (alignment != 1 && n) {
- dbg_err("alignment is not multiple of min I/O unit");
+ err = 5;
goto bad;
}
n = ubi->leb_size % alignment;
if (data_pad != n) {
dbg_err("bad data_pad, has to be %d", n);
+ err = 6;
goto bad;
}
if (vol_type != UBI_VID_DYNAMIC && vol_type != UBI_VID_STATIC) {
- dbg_err("bad vol_type");
+ err = 7;
goto bad;
}
if (upd_marker != 0 && upd_marker != 1) {
- dbg_err("bad upd_marker");
+ err = 8;
goto bad;
}
if (reserved_pebs > ubi->good_peb_count) {
dbg_err("too large reserved_pebs, good PEBs %d",
ubi->good_peb_count);
+ err = 9;
goto bad;
}
if (name_len > UBI_VOL_NAME_MAX) {
- dbg_err("too long volume name, max %d",
- UBI_VOL_NAME_MAX);
+ err = 10;
goto bad;
}
if (name[0] == '\0') {
- dbg_err("NULL volume name");
+ err = 11;
goto bad;
}
if (name_len != strnlen(name, name_len + 1)) {
- dbg_err("bad name_len");
+ err = 12;
goto bad;
}
}
return 0;
bad:
- ubi_err("volume table check failed, record %d", i);
+ ubi_err("volume table check failed: record %d, error %d", i, err);
ubi_dbg_dump_vtbl_record(&vtbl[i], i);
return -EINVAL;
}
vid_hdr->data_pad = cpu_to_be32(0);
vid_hdr->lnum = cpu_to_be32(copy);
vid_hdr->sqnum = cpu_to_be64(++si->max_sqnum);
- vid_hdr->leb_ver = cpu_to_be32(old_seb ? old_seb->leb_ver + 1: 0);
/* The EC header is already there, write the VID header */
err = ubi_io_write_vid_hdr(ubi, new_seb->pnum, vid_hdr);
* to LEB 0.
*/
- dbg_msg("check layout volume");
+ dbg_gen("check layout volume");
/* Read both LEB 0 and LEB 1 into memory */
ubi_rb_for_each_entry(rb, seb, &sv->root, u.rb) {
err = ubi_io_read_data(ubi, leb[seb->lnum], seb->pnum, 0,
ubi->vtbl_size);
if (err == UBI_IO_BITFLIPS || err == -EBADMSG)
- /* Scrub the PEB later */
+ /*
+ * Scrub the PEB later. Note, -EBADMSG indicates an
+ * uncorrectable ECC error, but we have our own CRC and
+ * the data will be checked later. If the data is OK,
+ * the PEB will be scrubbed (because we set
+ * seb->scrub). If the data is not OK, the contents of
+ * the PEB will be recovered from the second copy, and
+ * seb->scrub will be cleared in
+ * 'ubi_scan_add_used()'.
+ */
seb->scrub = 1;
else if (err)
goto out_free;
if (!leb_corrupted[0]) {
/* LEB 0 is OK */
if (leb[1])
- leb_corrupted[1] = memcmp(leb[0], leb[1], ubi->vtbl_size);
+ leb_corrupted[1] = memcmp(leb[0], leb[1],
+ ubi->vtbl_size);
if (leb_corrupted[1]) {
ubi_warn("volume table copy #2 is corrupted");
err = create_vtbl(ubi, si, 1, leb[0]);
if (ubi->autoresize_vol_id != -1) {
ubi_err("more then one auto-resize volume (%d "
"and %d)", ubi->autoresize_vol_id, i);
+ kfree(vol);
return -EINVAL;
}
static int check_sv(const struct ubi_volume *vol,
const struct ubi_scan_volume *sv)
{
+ int err;
+
if (sv->highest_lnum >= vol->reserved_pebs) {
- dbg_err("bad highest_lnum");
+ err = 1;
goto bad;
}
if (sv->leb_count > vol->reserved_pebs) {
- dbg_err("bad leb_count");
+ err = 2;
goto bad;
}
if (sv->vol_type != vol->vol_type) {
- dbg_err("bad vol_type");
+ err = 3;
goto bad;
}
if (sv->used_ebs > vol->reserved_pebs) {
- dbg_err("bad used_ebs");
+ err = 4;
goto bad;
}
if (sv->data_pad != vol->data_pad) {
- dbg_err("bad data_pad");
+ err = 5;
goto bad;
}
return 0;
bad:
- ubi_err("bad scanning information");
+ ubi_err("bad scanning information, error %d", err);
ubi_dbg_dump_sv(sv);
ubi_dbg_dump_vol_info(vol);
return -EINVAL;
return -EINVAL;
}
- if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT&&
+ if (si->highest_vol_id >= ubi->vtbl_slots + UBI_INT_VOL_COUNT &&
si->highest_vol_id < UBI_INTERNAL_VOL_START) {
ubi_err("too large volume ID %d found by scanning",
si->highest_vol_id);
return -EINVAL;
}
-
for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
cond_resched();
}
/**
- * ubi_read_volume_table - read volume table.
- * information.
+ * ubi_read_volume_table - read the volume table.
* @ubi: UBI device description object
* @si: scanning information
*
out_free:
vfree(ubi->vtbl);
- for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++)
- if (ubi->volumes[i]) {
- kfree(ubi->volumes[i]);
- ubi->volumes[i] = NULL;
- }
+ for (i = 0; i < ubi->vtbl_slots + UBI_INT_VOL_COUNT; i++) {
+ kfree(ubi->volumes[i]);
+ ubi->volumes[i] = NULL;
+ }
return err;
}
projects / linux-2.6 / blobdiff