[Xen-changelog] Don't call iptables if it is not installed. This code is only there to ensure

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User emellor@xxxxxxxxxxxxxxxxxxxxxx
# Node ID 980967b0b161aa2a0d77066c5c43afa1c4e3a14c
# Parent  1444adb1c407d6030a2c294976991414b47487d5
Don't call iptables if it is not installed.  This code is only there to ensure
that packets between domU and the bridge are not firewalled, so if iptables is
not installed, then there is no worry.

Signed-off-by: Ewan Mellor <ewan@xxxxxxxxxxxxx>

diff -r 1444adb1c407 -r 980967b0b161 tools/examples/vif-common.sh
--- a/tools/examples/vif-common.sh      Fri Nov 11 16:04:17 2005
+++ b/tools/examples/vif-common.sh      Fri Nov 11 16:56:02 2005
@@ -53,7 +53,8 @@
     local c="-D"
   fi
 
-  iptables "$c" FORWARD -m physdev --physdev-in "$vif" "$@" -j ACCEPT
+  iptables "$c" FORWARD -m physdev --physdev-in "$vif" "$@" -j ACCEPT ||
+    fatal "iptables $c FORWARD -m physdev --physdev-in $vif $@ -j ACCEPT 
failed"
 }
 
 
@@ -66,6 +67,11 @@
 #
 function handle_iptable()
 {
+  if ! which iptables >&/dev/null
+  then
+    return
+  fi
+
   if [ "$ip" != "" ]
   then
       local addr

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