From 0851d12be96690d0dd97c87958a48562de1f150a Mon Sep 17 00:00:00 2001
From: Rafal Wojtczuk <rafal@invisiblethingslab.com>
Date: Wed, 30 Mar 2011 10:28:25 +0200
Subject: [PATCH] qvm-copy-to-vm2.kde: prepare for a race in PROGRESS_FILE
 creation

Apparently a tight race may happen when PROGRESS_FILE has been created,
but not yet written to by qfile-agent. Check if its content are
sane before use.
---
 appvm/qvm-copy-to-vm2.kde | 1 +
 1 file changed, 1 insertion(+)

diff --git a/appvm/qvm-copy-to-vm2.kde b/appvm/qvm-copy-to-vm2.kde
index de28fee..4c47753 100755
--- a/appvm/qvm-copy-to-vm2.kde
+++ b/appvm/qvm-copy-to-vm2.kde
@@ -34,6 +34,7 @@ while ! [ -s $PROGRESS_FILE ] ; do
 done
 while true ; do
 	read agentpid sentsize agentstatus < $PROGRESS_FILE
+	if [ "x"$agentstatus = x ] ; then continue ; fi
 	if ! [ -e /proc/$agentpid ] ; then break ; fi
 	if [ "x"$agentstatus = xdone ] ; then break ; fi
 	CURRSIZE=$(($sentsize/1024))