[CIFS] Make sec=none force an anonymous mount
We had a customer report that attempting to make CIFS mount with a null
username (i.e. doing an anonymous mount) doesn't work. Looking through the
code, it looks like CIFS expects a NULL username from userspace in order
to trigger an anonymous mount. The mount.cifs code doesn't seem to ever
pass a null username to the kernel, however.
It looks also like the kernel can take a sec=none option, but it only seems
to look at it if the username is already NULL. This seems redundant and
effectively makes sec=none useless.
The following patch makes sec=none force an anonymous mount.
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index cf40e24..216fb62 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1721,12 +1721,12 @@
return -EINVAL;
}
- if (volume_info.username) {
+ if (volume_info.nullauth) {
+ cFYI(1,("null user"));
+ volume_info.username = NULL;
+ } else if (volume_info.username) {
/* BB fixme parse for domain name here */
cFYI(1, ("Username: %s ", volume_info.username));
-
- } else if (volume_info.nullauth) {
- cFYI(1,("null user"));
} else {
cifserror("No username specified");
/* In userspace mount helper we can get user name from alternate