[CIFS] Add uid to key description so krb can handle user mounts

Adds uid to key description fro supporting user mounts
and minor formating changes

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Igor Mammedov <niallain@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/fs/cifs/cifs_spnego.c b/fs/cifs/cifs_spnego.c
index e142faf2d0ae..ad54a3a6e434 100644
--- a/fs/cifs/cifs_spnego.c
+++ b/fs/cifs/cifs_spnego.c
@@ -76,9 +76,10 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo, const char *hostname)
         struct key *spnego_key;
 
 
-        /* version + ;ip{4|6}= + address + ;host=hostname + ;sec= + NULL */
-        desc_len = 2 + 5 + 32 + 1 + 5 + strlen(hostname) +
-                   strlen(";sec=krb5") + 1;
+        /* version + ;ip{4|6}= + address + ;host=hostname +
+                ;sec= + ;uid= + NULL */
+        desc_len = 4 + 5 + 32 + 1 + 5 + strlen(hostname) +
+                   strlen(";sec=krb5") + 7 + sizeof(uid_t)*2 + 1;
         spnego_key = ERR_PTR(-ENOMEM);
         description = kzalloc(desc_len, GFP_KERNEL);
         if (description == NULL)
@@ -87,7 +88,7 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo, const char *hostname)
         dp = description;
         /* start with version and hostname portion of UNC string */
         spnego_key = ERR_PTR(-EINVAL);
-        sprintf(dp, "%2.2x;host=%s;", CIFS_SPNEGO_UPCALL_VERSION,
+        sprintf(dp, "0x%2.2x;host=%s;", CIFS_SPNEGO_UPCALL_VERSION,
                 hostname);
         dp = description + strlen(description);
 
@@ -109,6 +110,9 @@ cifs_get_spnego_key(struct cifsSesInfo *sesInfo, const char *hostname)
         else
                 goto out;
 
+        dp = description + strlen(description);
+        sprintf(dp, ";uid=0x%x", sesInfo->linux_uid);
+
         cFYI(1, ("key description = %s", description));
         spnego_key = request_key(&cifs_spnego_key_type, description, "");