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Diffstat (limited to 'fs/jffs2/scan.c')
-rw-r--r--fs/jffs2/scan.c30
1 files changed, 15 insertions, 15 deletions
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 7fb45bd4915c..a5103df5242e 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -952,8 +952,7 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
952 struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s) 952 struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
953{ 953{
954 struct jffs2_inode_cache *ic; 954 struct jffs2_inode_cache *ic;
955 uint32_t ino = je32_to_cpu(ri->ino); 955 uint32_t crc, ino = je32_to_cpu(ri->ino);
956 int err;
957 956
958 D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs)); 957 D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
959 958
@@ -966,21 +965,22 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
966 Which means that the _full_ amount of time to get to proper write mode with GC 965 Which means that the _full_ amount of time to get to proper write mode with GC
967 operational may actually be _longer_ than before. Sucks to be me. */ 966 operational may actually be _longer_ than before. Sucks to be me. */
968 967
968 /* Check the node CRC in any case. */
969 crc = crc32(0, ri, sizeof(*ri)-8);
970 if (crc != je32_to_cpu(ri->node_crc)) {
971 printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on "
972 "node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
973 ofs, je32_to_cpu(ri->node_crc), crc);
974 /*
975 * We believe totlen because the CRC on the node
976 * _header_ was OK, just the node itself failed.
977 */
978 return jffs2_scan_dirty_space(c, jeb,
979 PAD(je32_to_cpu(ri->totlen)));
980 }
981
969 ic = jffs2_get_ino_cache(c, ino); 982 ic = jffs2_get_ino_cache(c, ino);
970 if (!ic) { 983 if (!ic) {
971 /* Inocache get failed. Either we read a bogus ino# or it's just genuinely the
972 first node we found for this inode. Do a CRC check to protect against the former
973 case */
974 uint32_t crc = crc32(0, ri, sizeof(*ri)-8);
975
976 if (crc != je32_to_cpu(ri->node_crc)) {
977 printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
978 ofs, je32_to_cpu(ri->node_crc), crc);
979 /* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
980 if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(ri->totlen)))))
981 return err;
982 return 0;
983 }
984 ic = jffs2_scan_make_ino_cache(c, ino); 984 ic = jffs2_scan_make_ino_cache(c, ino);
985 if (!ic) 985 if (!ic)
986 return -ENOMEM; 986 return -ENOMEM;