rpcauth_init_cred
void rpcauth_init_cred(struct rpc_cred *, const struct auth_cred *, struct rpc_auth *, const struct rpc_credops *);
EXPORT_SYMBOL_GPL(rpcauth_init_cred);
rpcauth_init_cred(&new->gc_base, &acred,
rpcauth_init_cred(&cred->gc_base, acred, auth, &gss_credops);
rpcauth_init_cred(ret, acred, auth, &unix_credops);