add flow request

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@16625 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT/postscripts/xcatflowrequest

@@ -0,0 +1,22 @@
+#!/bin/bash
+# IBM(c) 2013  EPL license http://www.eclipse.org/legal/epl-v10.html
+# This routine when called, contacts xcatd.  It will return to the caller when xcatd is
+# ready to process the request
+# It is called by xcatdsklspost before calling getpostscripts.awk
+# it is called by remoteshell before calling getcredentials.awk
+#
+exec 13<>/dev/udp/$1/$2
+echo "resourcerequest: xcatd" >&13
+parpid=$$
+touch /tmp/goahead.$parpid
+touch /tmp/killme.$parpid
+exec 2> /dev/null
+while ! grep 'resourcerequest: ok' /tmp/goahead.$parpid > /dev/null; do
+	(
+	  mypid=$BASHPID
+	  (sleep $(((RANDOM%60)+120)).$((RANDOM%50)); if [ -f /tmp/killme.$parpid ]; then kill -TERM $mypid; fi) &
+	  exec awk '{print $0 > "/tmp/goahead.'$parpid'";exit}' <&13
+	)	
+done
+rm /tmp/killme.$parpid
+