srv_send
srv_send(IMSG_CTL_DISCOVER_EVPID, &evpid, sizeof evpid);
srv_send(IMSG_CTL_DISCOVER_MSGID, &msgid, sizeof msgid);
srv_send(IMSG_CTL_UPDATE_TABLE, "aliases", strlen("aliases") + 1);
srv_send(IMSG_CTL_LIST_MESSAGES, &from, sizeof(from));
srv_send(IMSG_CTL_LIST_ENVELOPES, &from, sizeof(from));
srv_send(ctl, &evpid, sizeof(evpid));
srv_send(ctl, &evpid, sizeof(evpid));
srv_send(ctl, &argv->u.u_evpid, sizeof(evpid));
srv_send(cmd, data, len);
srv_send(IMSG_CTL_VERBOSE, &v, sizeof(v));
srv_send(IMSG_CTL_VERBOSE, &v, sizeof(v));
srv_send(IMSG_CTL_GET_DIGEST, NULL, 0);
srv_send(IMSG_CTL_PAUSE_MDA, NULL, 0);
srv_send(IMSG_CTL_PAUSE_MTA, NULL, 0);
srv_send(IMSG_CTL_PAUSE_SMTP, NULL, 0);
srv_send(IMSG_CTL_PROFILE_ENABLE, &v, sizeof(v));
srv_send(IMSG_CTL_RESUME_MDA, NULL, 0);
srv_send(IMSG_CTL_RESUME_MTA, NULL, 0);
srv_send(IMSG_CTL_RESUME_ROUTE, &v, sizeof(v));
srv_send(IMSG_CTL_RESUME_SMTP, NULL, 0);
srv_send(IMSG_CTL_GET_STATS, &kv, sizeof kv);
srv_send(IMSG_CTL_SHOW_STATUS, NULL, 0);
srv_send(IMSG_CTL_TRACE_ENABLE, &v, sizeof(v));
srv_send(IMSG_CTL_PROFILE_DISABLE, &v, sizeof(v));
srv_send(IMSG_CTL_TRACE_DISABLE, &v, sizeof(v));
srv_send(IMSG_CTL_UPDATE_TABLE, name, strlen(name) + 1);