]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
cifs: Fix check for regular file in couldbe_mf_symlink()
authorSachin Prabhu <sprabhu@redhat.com>
Fri, 31 Jan 2014 14:27:16 +0000 (14:27 +0000)
committerSteve French <smfrench@gmail.com>
Fri, 31 Jan 2014 15:06:43 +0000 (09:06 -0600)
commita9a315d41407cd1079eb815f4adae897cc08b0d2
treeabd61b5ea4012204d5c973d5b261b2f004bbbfb5
parent666753c3ef8fc88b0ddd5be4865d0aa66428ac35
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>
fs/cifs/link.c