aboutsummaryrefslogtreecommitdiff
path: root/fs/ubifs/scan.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/ubifs/scan.c')
-rw-r--r--fs/ubifs/scan.c102
1 files changed, 56 insertions, 46 deletions
diff --git a/fs/ubifs/scan.c b/fs/ubifs/scan.c
index 0ed82479b44..5523d4e6608 100644
--- a/fs/ubifs/scan.c
+++ b/fs/ubifs/scan.c
@@ -3,18 +3,7 @@
*
* Copyright (C) 2006-2008 Nokia Corporation
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * SPDX-License-Identifier: GPL-2.0+
*
* Authors: Adrian Hunter
* Artem Bityutskiy (Битюцкий Артём)
@@ -27,6 +16,10 @@
* debugging functions.
*/
+#define __UBOOT__
+#ifdef __UBOOT__
+#include <linux/err.h>
+#endif
#include "ubifs.h"
/**
@@ -75,7 +68,7 @@ int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
magic = le32_to_cpu(ch->magic);
if (magic == 0xFFFFFFFF) {
- dbg_scan("hit empty space");
+ dbg_scan("hit empty space at LEB %d:%d", lnum, offs);
return SCANNED_EMPTY_SPACE;
}
@@ -85,7 +78,8 @@ int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
if (len < UBIFS_CH_SZ)
return SCANNED_GARBAGE;
- dbg_scan("scanning %s", dbg_ntype(ch->node_type));
+ dbg_scan("scanning %s at LEB %d:%d",
+ dbg_ntype(ch->node_type), lnum, offs);
if (ubifs_check_node(c, buf, lnum, offs, quiet, 1))
return SCANNED_A_CORRUPT_NODE;
@@ -101,22 +95,21 @@ int ubifs_scan_a_node(const struct ubifs_info *c, void *buf, int len, int lnum,
if (!quiet) {
ubifs_err("bad pad node at LEB %d:%d",
lnum, offs);
- dbg_dump_node(c, pad);
+ ubifs_dump_node(c, pad);
}
return SCANNED_A_BAD_PAD_NODE;
}
/* Make the node pads to 8-byte boundary */
if ((node_len + pad_len) & 7) {
- if (!quiet) {
- dbg_err("bad padding length %d - %d",
- offs, offs + node_len + pad_len);
- }
+ if (!quiet)
+ ubifs_err("bad padding length %d - %d",
+ offs, offs + node_len + pad_len);
return SCANNED_A_BAD_PAD_NODE;
}
- dbg_scan("%d bytes padded, offset now %d",
- pad_len, ALIGN(offs + node_len + pad_len, 8));
+ dbg_scan("%d bytes padded at LEB %d:%d, offset now %d", pad_len,
+ lnum, offs, ALIGN(offs + node_len + pad_len, 8));
return node_len + pad_len;
}
@@ -149,10 +142,10 @@ struct ubifs_scan_leb *ubifs_start_scan(const struct ubifs_info *c, int lnum,
INIT_LIST_HEAD(&sleb->nodes);
sleb->buf = sbuf;
- err = ubi_read(c->ubi, lnum, sbuf + offs, offs, c->leb_size - offs);
+ err = ubifs_leb_read(c, lnum, sbuf + offs, offs, c->leb_size - offs, 0);
if (err && err != -EBADMSG) {
- ubifs_err("cannot read %d bytes from LEB %d:%d,"
- " error %d", c->leb_size - offs, lnum, offs, err);
+ ubifs_err("cannot read %d bytes from LEB %d:%d, error %d",
+ c->leb_size - offs, lnum, offs, err);
kfree(sleb);
return ERR_PTR(err);
}
@@ -198,7 +191,7 @@ int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
struct ubifs_ino_node *ino = buf;
struct ubifs_scan_node *snod;
- snod = kzalloc(sizeof(struct ubifs_scan_node), GFP_NOFS);
+ snod = kmalloc(sizeof(struct ubifs_scan_node), GFP_NOFS);
if (!snod)
return -ENOMEM;
@@ -213,13 +206,15 @@ int ubifs_add_snod(const struct ubifs_info *c, struct ubifs_scan_leb *sleb,
case UBIFS_DENT_NODE:
case UBIFS_XENT_NODE:
case UBIFS_DATA_NODE:
- case UBIFS_TRUN_NODE:
/*
* The key is in the same place in all keyed
* nodes.
*/
key_read(c, &ino->key, &snod->key);
break;
+ default:
+ invalid_key_init(c, &snod->key);
+ break;
}
list_add_tail(&snod->list, &sleb->nodes);
sleb->nodes_cnt += 1;
@@ -238,13 +233,11 @@ void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs,
{
int len;
- ubifs_err("corrupted data at LEB %d:%d", lnum, offs);
- if (dbg_failure_mode)
- return;
+ ubifs_err("corruption at LEB %d:%d", lnum, offs);
len = c->leb_size - offs;
- if (len > 4096)
- len = 4096;
- dbg_err("first %d bytes from LEB %d:%d", len, lnum, offs);
+ if (len > 8192)
+ len = 8192;
+ ubifs_err("first %d bytes from LEB %d:%d", len, lnum, offs);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 4, buf, len, 1);
}
@@ -253,13 +246,19 @@ void ubifs_scanned_corruption(const struct ubifs_info *c, int lnum, int offs,
* @c: UBIFS file-system description object
* @lnum: logical eraseblock number
* @offs: offset to start at (usually zero)
- * @sbuf: scan buffer (must be c->leb_size)
+ * @sbuf: scan buffer (must be of @c->leb_size bytes in size)
+ * @quiet: print no messages
*
* This function scans LEB number @lnum and returns complete information about
- * its contents. Returns an error code in case of failure.
+ * its contents. Returns the scaned information in case of success and,
+ * %-EUCLEAN if the LEB neads recovery, and other negative error codes in case
+ * of failure.
+ *
+ * If @quiet is non-zero, this function does not print large and scary
+ * error messages and flash dumps in case of errors.
*/
struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
- int offs, void *sbuf)
+ int offs, void *sbuf, int quiet)
{
void *buf = sbuf + offs;
int err, len = c->leb_size - offs;
@@ -278,8 +277,7 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
cond_resched();
- ret = ubifs_scan_a_node(c, buf, len, lnum, offs, 0);
-
+ ret = ubifs_scan_a_node(c, buf, len, lnum, offs, quiet);
if (ret > 0) {
/* Padding bytes or a valid padding node */
offs += ret;
@@ -294,17 +292,18 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
switch (ret) {
case SCANNED_GARBAGE:
- dbg_err("garbage");
+ ubifs_err("garbage");
goto corrupted;
case SCANNED_A_NODE:
break;
case SCANNED_A_CORRUPT_NODE:
case SCANNED_A_BAD_PAD_NODE:
- dbg_err("bad node");
+ ubifs_err("bad node");
goto corrupted;
default:
- dbg_err("unknown");
- goto corrupted;
+ ubifs_err("unknown");
+ err = -EINVAL;
+ goto error;
}
err = ubifs_add_snod(c, sleb, buf, offs);
@@ -317,8 +316,12 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
len -= node_len;
}
- if (offs % c->min_io_size)
+ if (offs % c->min_io_size) {
+ if (!quiet)
+ ubifs_err("empty space starts at non-aligned offset %d",
+ offs);
goto corrupted;
+ }
ubifs_end_scan(c, sleb, lnum, offs);
@@ -327,18 +330,25 @@ struct ubifs_scan_leb *ubifs_scan(const struct ubifs_info *c, int lnum,
break;
for (; len; offs++, buf++, len--)
if (*(uint8_t *)buf != 0xff) {
- ubifs_err("corrupt empty space at LEB %d:%d",
- lnum, offs);
+ if (!quiet)
+ ubifs_err("corrupt empty space at LEB %d:%d",
+ lnum, offs);
goto corrupted;
}
return sleb;
corrupted:
- ubifs_scanned_corruption(c, lnum, offs, buf);
+ if (!quiet) {
+ ubifs_scanned_corruption(c, lnum, offs, buf);
+ ubifs_err("LEB %d scanning failed", lnum);
+ }
err = -EUCLEAN;
+ ubifs_scan_destroy(sleb);
+ return ERR_PTR(err);
+
error:
- ubifs_err("LEB %d scanning failed", lnum);
+ ubifs_err("LEB %d scanning failed, error %d", lnum, err);
ubifs_scan_destroy(sleb);
return ERR_PTR(err);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-10 05:00:42 +0000