+static int gss_renew_cred(struct rpc_task *task)
+{
+ struct rpc_cred *oldcred = task->tk_msg.rpc_cred;
+ struct gss_cred *gss_cred = container_of(oldcred,
+ struct gss_cred,
+ gc_base);
+ struct rpc_auth *auth = oldcred->cr_auth;
+ struct auth_cred acred = {
+ .uid = oldcred->cr_uid,
+ .machine_cred = gss_cred->gc_machine_cred,
+ };
+ struct rpc_cred *new;
+
+ new = gss_lookup_cred(auth, &acred, RPCAUTH_LOOKUP_NEW);
+ if (IS_ERR(new))
+ return PTR_ERR(new);
+ task->tk_msg.rpc_cred = new;
+ put_rpccred(oldcred);
+ return 0;
+}
+