xen/bridge-record-creation.patch

Index: xen-3.4.1-testing/tools/hotplug/Linux/network-bridge
===================================================================
--- xen-3.4.1-testing.orig/tools/hotplug/Linux/network-bridge
+++ xen-3.4.1-testing/tools/hotplug/Linux/network-bridge
@@ -249,6 +249,11 @@ op_start () {
 
     create_bridge ${tdev}
 
+    # Record creation of bridge in /dev/shm/sysconfig/xenbridges so other
+    # tools, e.g. yast2 lan, know that Xen bridging is active.
+    [ -d /dev/shm/sysconfig/xenbridges ] || mkdir /dev/shm/sysconfig/xenbridges
+    touch /dev/shm/sysconfig/xenbridges/${bridge}
+
     preiftransfer ${netdev}
     transfer_addrs ${netdev} ${tdev}
     # Remember slaves for bonding interface.
@@ -322,6 +327,13 @@ op_stop () {
     ip link set ${pdev} name ${netdev}
     do_ifup ${netdev}
 
+    # Remove record of bridge from /dev/shm/sysconfig/xenbridges ...
+    rm -f /dev/shm/sysconfig/xenbridges/${bridge}
+    # ... and directory itself if empty
+    if [ -z "$(ls -A /dev/shm/sysconfig/xenbridges 2>/dev/null)" ]; then
+	rmdir /dev/shm/sysconfig/xenbridges
+    fi
+
     for vlan in $vlans ; do ifup $vlan ; done
 }