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authorJoakim Tjernlund <joakim.tjernlund@transmode.se>2007-03-10 19:08:44 +0300
committerDavid Woodhouse <dwmw2@infradead.org>2007-04-25 07:13:06 +0400
commit0dec4c8bc6ed62a65b61594aa754e21270423796 (patch)
tree42f4f16e9173fc75aa27e69510b9b4e123122d30 /fs/jffs2/readinode.c
parentdf8e96f39103adf5a13332d784040a2c62667243 (diff)
downloadlinux-0dec4c8bc6ed62a65b61594aa754e21270423796.tar.xz
[JFFS2] Better fix for all-zero node headers
No need to check for all-zero header since the header cannot be zero due to other checks. Replace the all-zero header check in readinode.c with a check for the magic word. Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'fs/jffs2/readinode.c')
-rw-r--r--fs/jffs2/readinode.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index 49d4b0a67c55..b09fa23abe53 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -1054,10 +1054,10 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
jffs2_mark_node_obsolete(c, ref);
goto cont;
}
- /* Due to poor choice of crc32 seed, an all-zero node will have a correct CRC */
- if (!je32_to_cpu(node->u.hdr_crc) && !je16_to_cpu(node->u.nodetype) &&
- !je16_to_cpu(node->u.magic) && !je32_to_cpu(node->u.totlen)) {
- JFFS2_NOTICE("All zero node header at %#08x.\n", ref_offset(ref));
+ if (je16_to_cpu(node->u.magic) != JFFS2_MAGIC_BITMASK) {
+ /* Not a JFFS2 node, whinge and move on */
+ JFFS2_NOTICE("Wrong magic bitmask 0x%04x in node header at %#08x.\n",
+ je16_to_cpu(node->u.magic), ref_offset(ref));
jffs2_mark_node_obsolete(c, ref);
goto cont;
}