sunrpc: add a new "stringify_acceptor" rpc_credop

...and add an new rpc_auth function to call it when it exists. This
is only applicable for AUTH_GSS mechanisms, so we only specify this
for those sorts of credentials.

Signed-off-by: Jeff Layton <jlayton@poochiereds.net>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/sunrpc/auth.h b/include/linux/sunrpc/auth.h
index 790be1472792..c683b9a06913 100644
--- a/include/linux/sunrpc/auth.h
+++ b/include/linux/sunrpc/auth.h
@@ -140,6 +140,7 @@ struct rpc_credops {
                                                 void *, __be32 *, void *);
         int                     (*crkey_timeout)(struct rpc_cred *);
         bool                    (*crkey_to_expire)(struct rpc_cred *);
+        char *                  (*crstringify_acceptor)(struct rpc_cred *);
 };
 
 extern const struct rpc_authops authunix_ops;
@@ -182,6 +183,7 @@ void			rpcauth_clear_credcache(struct rpc_cred_cache *);
 int                     rpcauth_key_timeout_notify(struct rpc_auth *,
                                                 struct rpc_cred *);
 bool                    rpcauth_cred_key_to_expire(struct rpc_cred *);
+char *                  rpcauth_stringify_acceptor(struct rpc_cred *);
 
 static inline
 struct rpc_cred *       get_rpccred(struct rpc_cred *cred)