set_client
status = set_client(clientid, cstate, nn);
status = set_client(clid, cstate, nn);
status = set_client(&stateid->si_opaque.so_clid, cstate, nn);
status = set_client(&lockt->lt_clientid, cstate, nn);
status = set_client(clid, cstate, nn);
enum svc_auth_status (*set_client)(struct svc_rqst *rqstp);
.set_client = svcauth_gss_set_client,
return rqstp->rq_authop->set_client(rqstp);
.set_client = svcauth_unix_set_client,
.set_client = svcauth_unix_set_client,
.set_client = svcauth_unix_set_client,