From da55bd5aac86a2073264b742dae513872664808c Mon Sep 17 00:00:00 2001
From: gilles <gilles@openbsd.org>
Date: Wed, 14 Oct 2015 21:27:29 +0000
Subject: [PATCH] imsg_read() may return EAGAIN, handle it in mproc_dispatch()

---
 usr.sbin/smtpd/mproc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/usr.sbin/smtpd/mproc.c b/usr.sbin/smtpd/mproc.c
index 119c7c8f33a..563baf34d6c 100644
--- a/usr.sbin/smtpd/mproc.c
+++ b/usr.sbin/smtpd/mproc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mproc.c,v 1.14 2015/10/14 21:18:19 gilles Exp $	*/
+/*	$OpenBSD: mproc.c,v 1.15 2015/10/14 21:27:29 gilles Exp $	*/
 
 /*
  * Copyright (c) 2012 Eric Faurot <eric@faurot.net>
@@ -160,6 +160,8 @@ mproc_dispatch(int fd, short event, void *arg)
 		if (n == -1) {
 			log_warn("warn: %s -> %s: imsg_read",
 			    proc_name(smtpd_process),  p->name);
+			if (errno == EAGAIN)
+				return;
 			fatal("exiting");
 		}
 		if (n == 0) {
-- 
2.20.1