#!/bin/bash

dir=$(dirname "$0")
. "$dir/xen-hotplug-common.sh"
. "$dir/xen-network-common.sh"

bridge=$(xenstore_read_default "$XENBUS_PATH/bridge" "$bridge")
if [ -z "$bridge" ]
    then
    nr_bridges=$(($(brctl show | cut -f 1 | grep -v "^$" | wc -l) - 1))
    if [ "$nr_bridges" != 1 ]
	then
	fatal "no bridge specified, and don't know which one to use ($nr_bridges found)"
    fi
    bridge=$(brctl show | cut -d "
" -f 2 | cut -f 1)
fi

command="$1"
shift

case "$command" in
    "online")
	if [ "$bridge" != "-" ]
	    then
	    setup_virtual_bridge_port "$vif"
	    add_to_bridge "$bridge" "$vif"
	else
	    # Just let the normal udev rules for interfaces handle it.
	    true
	fi
	success
	;;

    "add")
	success
	;;

    "remove")
	;;

    *)
	echo "Unknown command: $command"
	echo 'Valid commands are: add, remove, online'
	exit 1
esac