94 lines
2.8 KiB
Bash
Executable File
94 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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#============================================================================
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# /etc/xen/vif-route-qubes
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#
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# Script for configuring a vif in routed mode.
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# The hotplugging system will call this script if it is specified either in
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# the device configuration given to Xend, or the default Xend configuration
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# in /etc/xen/xend-config.sxp. If the script is specified in neither of those
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# places, then vif-bridge is the default.
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#
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# Usage:
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# vif-route (add|remove|online|offline)
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#
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# Environment vars:
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# vif vif interface name (required).
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# XENBUS_PATH path to this device's details in the XenStore (required).
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#
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# Read from the store:
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# ip list of IP networks for the vif, space-separated (default given in
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# this script).
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#============================================================================
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dir=$(dirname "$0")
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. "$dir/vif-common.sh"
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#main_ip=$(dom0_ip)
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lockfile=/var/run/xen-hotplug/vif-lock
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if [ "${ip}" ]; then
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# IPs as seen by this VM
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netvm_ip="$ip"
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netvm_gw_ip=`qubesdb-read /qubes-netvm-gateway`
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netvm_dns1_ip=`qubesdb-read /qubes-netvm-primary-dns`
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netvm_dns2_ip=`qubesdb-read /qubes-netvm-secondary-dns`
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back_ip="$netvm_gw_ip"
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# IPs as seen by the VM - if other than $netvm_ip
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appvm_gw_ip="`qubesdb-read /mapped-ip/$ip/visible-gateway 2>/dev/null || :`"
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appvm_ip="`qubesdb-read /mapped-ip/$ip/visible-ip 2>/dev/null || :`"
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fi
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# Apply NAT if IP visible from the VM is different than the "real" one
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# See vif-qubes-nat.sh for details
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if [ -n "$appvm_ip" -a -n "$appvm_gw_ip" -a "$appvm_ip" != "$netvm_ip" ]; then
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if test "$command" == online; then
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echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp
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fi
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. "$dir/vif-qubes-nat.sh"
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fi
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case "$command" in
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online)
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ifconfig ${vif} up
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echo 1 >/proc/sys/net/ipv4/conf/${vif}/proxy_arp
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ipcmd='add'
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iptables_cmd='-I PREROUTING 1'
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cmdprefix=''
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;;
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offline)
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do_without_error ifdown ${vif}
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ipcmd='del'
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iptables_cmd='-D PREROUTING'
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cmdprefix='do_without_error'
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;;
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esac
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domid=${vif/vif/}
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domid=${domid/.*/}
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# metric must be possitive, but prefer later interface
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# 32752 is max XID aka domid
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metric=$[ 32752 - $domid ]
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if [ "${ip}" ] ; then
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# If we've been given a list of IP addresses, then add routes from dom0 to
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# the guest using those addresses.
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for addr in ${ip} ; do
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${cmdprefix} ip route ${ipcmd} ${addr} dev ${vif} metric $metric
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done
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echo -e "*raw\n$iptables_cmd -i ${vif} ! -s ${ip} -j DROP\nCOMMIT" | \
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${cmdprefix} flock $lockfile iptables-restore --noflush
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${cmdprefix} ip addr ${ipcmd} ${back_ip}/32 dev ${vif}
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fi
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log debug "Successful vif-route-qubes $command for $vif."
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if [ "$command" = "online" ]
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then
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# disable tx checksumming offload, apparently it doesn't work with our ancient qemu in stubdom
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do_without_error ethtool -K $vif tx off
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success
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fi
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