NFS: Update MNT and MNT3 reply decoding functions

Solder xdr_stream-based XDR decoding functions into the in-kernel mountd
client that are more careful about checking data types and watching for
buffer overflows.  The new MNT3 decoder includes support for auth-flavor
list decoding.

The "_sz" macro for MNT3 replies was missing the size of the file handle.
I've added this back, and included the size of the auth flavor array.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 0207758de44a..10cf1110df48 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -83,6 +83,8 @@ struct nfs_mount_request {
         unsigned short          protocol;
         struct nfs_fh           *fh;
         int                     noresvport;
+        unsigned int            *auth_flav_len;
+        rpc_authflavor_t        *auth_flavs;
 };
 
 extern int nfs_mount(struct nfs_mount_request *info);