From f145c771fb7b377425ee1185395c3c65ec529063 Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Sun, 26 Sep 2010 01:45:33 +0000
Subject: Protect the watchdog daemon against swap OOM killer.  This is similar
 to SVN r199804 which added protection to sshd, cron, syslogd, and inetd.

---
 usr.sbin/watchdogd/watchdogd.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'usr.sbin/watchdogd/watchdogd.c')

diff --git a/usr.sbin/watchdogd/watchdogd.c b/usr.sbin/watchdogd/watchdogd.c
index 4b58caf3889e..7bae4ffc3ee4 100644
--- a/usr.sbin/watchdogd/watchdogd.c
+++ b/usr.sbin/watchdogd/watchdogd.c
@@ -31,6 +31,7 @@
 #include <sys/types.h>
 __FBSDID("$FreeBSD$");
 
+#include <sys/mman.h>
 #include <sys/param.h>
 #include <sys/rtprio.h>
 #include <sys/stat.h>
@@ -115,6 +116,8 @@ main(int argc, char *argv[])
 		signal(SIGTERM, sighandler);
 
 		pidfile_write(pfh);
+		if (madvise(0, 0, MADV_PROTECT) != 0)
+			warn("madvise failed");
 
 		watchdog_loop();
 
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