From: Matthew Dillon <dillon@apollo.backplane.com>
Date: Thu, 12 Jan 2012 19:06:59 +0000 (-0800)
Subject: vknetd - Ignore SIGPIPE
X-Git-Tag: v3.0.0~95
X-Git-Url: http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff_plain/1709135ea19db22695e1f94232a4b95cc2e27a66

vknetd - Ignore SIGPIPE

* Ignore SIGPIPE, fixing an undesired kill of vknetd when a write()
  races a vkernel termination.

Reported-by: tuxillo
---

diff --git a/usr.sbin/vknetd/vknetd.c b/usr.sbin/vknetd/vknetd.c
index 22e7581..586c137 100644
--- a/usr.sbin/vknetd/vknetd.c
+++ b/usr.sbin/vknetd/vknetd.c
@@ -106,6 +106,13 @@ main(int ac, char **av)
 		SetAddrOpt = 1;
 
 	/*
+	 * Ignore SIGPIPE to prevent write() races against disconnecting
+	 * clients from killing vknetd.  Should be inherited by all I/O
+	 * threads.
+	 */
+	signal(SIGPIPE, SIG_IGN);
+
+	/*
 	 * Special connect/debug mode
 	 */
 	if (connectOpt) {