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authorSachin Prabhu <sprabhu@redhat.com>2014-01-31 18:27:16 +0400
committerSteve French <smfrench@gmail.com>2014-01-31 19:06:43 +0400
commita9a315d41407cd1079eb815f4adae897cc08b0d2 (patch)
treeabd61b5ea4012204d5c973d5b261b2f004bbbfb5 /fs
parent666753c3ef8fc88b0ddd5be4865d0aa66428ac35 (diff)
downloadlinux-a9a315d41407cd1079eb815f4adae897cc08b0d2.tar.xz
cifs: Fix check for regular file in couldbe_mf_symlink()
MF Symlinks are regular files containing content in a specified format. The function couldbe_mf_symlink() checks the mode for a set S_IFREG bit as a test to confirm that it is a regular file. This bit is also set for other filetypes and simply checking for this bit being set may return false positives. We ensure that we are actually checking for a regular file by using the S_ISREG macro to test instead. Signed-off-by: Sachin Prabhu <sprabhu@redhat.com> Reviewed-by: Jeff Layton <jlayton@redhat.com> Reported-by: Neil Brown <neilb@suse.de> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/cifs/link.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 52f41f9f7def..264ece71bdb2 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -185,7 +185,7 @@ format_mf_symlink(u8 *buf, unsigned int buf_len, const char *link_str)
bool
couldbe_mf_symlink(const struct cifs_fattr *fattr)
{
- if (!(fattr->cf_mode & S_IFREG))
+ if (!S_ISREG(fattr->cf_mode))
/* it's not a symlink */
return false;