Incoming TCP connections from clients fill the files of a log server.

A log client reconnects at every SIGHUP.  Write these accept and
close messages with debug priority, then they can be turned on in
syslog.conf.  Default is off.
While there, move a debug message and set the priority of the exit
message explicitly to error.
OK mpf@ millert@

diff --git a/usr.sbin/syslogd/syslogd.c b/usr.sbin/syslogd/syslogd.c
index b1df3da..17b8093 100644 (file)
--- a/usr.sbin/syslogd/syslogd.c
+++ b/usr.sbin/syslogd/syslogd.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: syslogd.c,v 1.240 2017/04/05 22:15:35 bluhm Exp $     */
+/*     $OpenBSD: syslogd.c,v 1.241 2017/04/07 15:36:16 bluhm Exp $     */
 
 /*
  * Copyright (c) 1983, 1988, 1993, 1994
@@ -1134,7 +1134,7 @@ acceptcb(int lfd, short event, void *arg, int usetls)
        p->p_peername = peername;
        bufferevent_enable(p->p_bufev, EV_READ);
 
-       log_info(LOG_INFO, "%s logger \"%s\" accepted",
+       log_info(LOG_DEBUG, "%s logger \"%s\" accepted",
            p->p_ctx ? "tls" : "tcp", peername);
 }
 
@@ -1261,7 +1261,7 @@ tcp_closecb(struct bufferevent *bufev, short event, void *arg)
        struct peer             *p = arg;
 
        if (event & EVBUFFER_EOF) {
-               log_info(LOG_INFO, "%s logger \"%s\" connection close",
+               log_info(LOG_DEBUG, "%s logger \"%s\" connection close",
                    p->p_ctx ? "tls" : "tcp", p->p_peername);
        } else {
                log_info(LOG_NOTICE, "%s logger \"%s\" connection error: %s",
@@ -2146,15 +2146,14 @@ void
 init_signalcb(int signum, short event, void *arg)
 {
        init();
-
        log_info(LOG_INFO, "restart");
-       log_debug("syslogd: restarted");
 
        if (tcpbuf_dropped > 0) {
                log_info(LOG_WARNING, "dropped %d message%s to remote loghost",
                    tcpbuf_dropped, tcpbuf_dropped == 1 ? "" : "s");
                tcpbuf_dropped = 0;
        }
+       log_debug("syslogd: restarted");
 }
 
 void
@@ -2189,7 +2188,7 @@ die(int signo)
        }
 
        if (signo)
-               log_warnx("exiting on signal %d", signo);
+               log_info(LOG_ERR, "exiting on signal %d", signo);
        log_debug("syslogd: exited");
        exit(0);
 }