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-rw-r--r--fs/ubifs/tnc.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c
index f7e36f545527..fa28a84c6a1b 100644
--- a/fs/ubifs/tnc.c
+++ b/fs/ubifs/tnc.c
@@ -443,6 +443,11 @@ static int tnc_read_node_nm(struct ubifs_info *c, struct ubifs_zbranch *zbr,
443 * This function performs that same function as ubifs_read_node except that 443 * This function performs that same function as ubifs_read_node except that
444 * it does not require that there is actually a node present and instead 444 * it does not require that there is actually a node present and instead
445 * the return code indicates if a node was read. 445 * the return code indicates if a node was read.
446 *
447 * Note, this function does not check CRC of data nodes if @c->no_chk_data_crc
448 * is true (it is controlled by corresponding mount option). However, if
449 * @c->always_chk_crc is true, @c->no_chk_data_crc is ignored and CRC is always
450 * checked.
446 */ 451 */
447static int try_read_node(const struct ubifs_info *c, void *buf, int type, 452static int try_read_node(const struct ubifs_info *c, void *buf, int type,
448 int len, int lnum, int offs) 453 int len, int lnum, int offs)
@@ -470,9 +475,8 @@ static int try_read_node(const struct ubifs_info *c, void *buf, int type,
470 if (node_len != len) 475 if (node_len != len)
471 return 0; 476 return 0;
472 477
473 if (type == UBIFS_DATA_NODE && !c->always_chk_crc) 478 if (type == UBIFS_DATA_NODE && !c->always_chk_crc && c->no_chk_data_crc)
474 if (c->no_chk_data_crc) 479 return 1;
475 return 0;
476 480
477 crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8); 481 crc = crc32(UBIFS_CRC32_INIT, buf + 8, node_len - 8);
478 node_crc = le32_to_cpu(ch->crc); 482 node_crc = le32_to_cpu(ch->crc);
@@ -1506,7 +1510,7 @@ out:
1506 * 1510 *
1507 * Note, if the bulk-read buffer length (@bu->buf_len) is known, this function 1511 * Note, if the bulk-read buffer length (@bu->buf_len) is known, this function
1508 * makes sure bulk-read nodes fit the buffer. Otherwise, this function prepares 1512 * makes sure bulk-read nodes fit the buffer. Otherwise, this function prepares
1509 * maxumum possible amount of nodes for bulk-read. 1513 * maximum possible amount of nodes for bulk-read.
1510 */ 1514 */
1511int ubifs_tnc_get_bu_keys(struct ubifs_info *c, struct bu_info *bu) 1515int ubifs_tnc_get_bu_keys(struct ubifs_info *c, struct bu_info *bu)
1512{ 1516{