diff -up ypserv-2.26/lib/pidfile.c.cloexec ypserv-2.26/lib/pidfile.c
--- ypserv-2.26/lib/pidfile.c.cloexec	2011-04-15 16:49:41.000000000 +0200
+++ ypserv-2.26/lib/pidfile.c	2012-04-13 20:49:55.643903727 +0200
@@ -33,7 +33,7 @@ create_pidfile (const char *filename, co
   char pbuf[50], *ptr;
   struct flock lock;
 
-  fd = open (filename, O_CREAT | O_RDWR,
+  fd = open (filename, O_CREAT | O_RDWR | O_CLOEXEC,
 	     S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);
   if (fd < 0)
     {