core-agent-linux/network/vif-route-qubes

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#!/bin/bash
#============================================================================
# /etc/xen/vif-route-qubes
#
# Script for configuring a vif in routed mode.
# The hotplugging system will call this script if it is specified either in
# the device configuration given to Xend, or the default Xend configuration
# in /etc/xen/xend-config.sxp. If the script is specified in neither of those
# places, then vif-bridge is the default.
#
# Usage:
# vif-route (add|remove|online|offline)
#
# Environment vars:
# vif vif interface name (required).
# XENBUS_PATH path to this device's details in the XenStore (required).
#
# Read from the store:
# ip list of IP networks for the vif, space-separated (default given in
# this script).
#============================================================================
dir=$(dirname "$0")
. "$dir/vif-common.sh"
#main_ip=$(dom0_ip)
case "$command" in
online)
ifconfig ${vif} up
echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp
ipcmd='replace'
iptables_cmd='-I FORWARD 1'
cmdprefix=''
;;
offline)
do_without_error ifdown ${vif}
ipcmd='del'
iptables_cmd='-D FORWARD'
cmdprefix='do_without_error'
;;
esac
if [ "${ip}" ] ; then
# If we've been given a list of IP addresses, then add routes from dom0 to
# the guest using those addresses.
for addr in ${ip} ; do
${cmdprefix} ip route ${ipcmd} ${addr} dev ${vif} || true
done
echo ${cmdprefix} iptables $iptables_cmd -i ${vif} \! -s ${ip} -j DROP
${cmdprefix} iptables $iptables_cmd -i ${vif} \! -s ${ip} -j DROP
fi
log debug "Successful vif-route-qubes $command for $vif."
if [ "$command" = "online" ]
then
success
fi