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network: support for not setting DNS and/or default gateway

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This patch introduces two new qvm-services:
 - set-default-route
 - set-dns-server
Both enabled by default. You can disable any of them to not set default
route and/or DNS servers in the VM. Those settings have no effect on
NetVM, where such settings are controlled by NetworkManager.

This is based on patch sent by Joonas Lehtonen
<joonas.lehtonen@openmailbox.org>
https://groups.google.com/d/msgid/qubes-devel/54C39656.3090303%40openmailbox.org

Conflicts:
	network/setup-ip
	vm-init.d/qubes-core
	vm-systemd/qubes-sysinit.sh
This commit is contained in:
Marek Marczykowski-Górecki 2015-01-27 00:27:08 +01:00
parent 13bca3d05f
commit 4637735882
3 changed files with 30 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
network/setup-ip
View File

@ -8,16 +8,22 @@ if [ x$ip != x ]; then
/sbin/ifconfig $INTERFACE $ip netmask 255.255.255.255
/sbin/ifconfig $INTERFACE up
/sbin/route add -host $gateway dev $INTERFACE
/sbin/route add default gw $gateway
if [ -f /var/run/qubes-service/set-default-route ]; then
/sbin/route add default gw $gateway
fi
/sbin/ethtool -K $INTERFACE sg off
/sbin/ethtool -K $INTERFACE tx off
echo "nameserver $gateway" > /etc/resolv.conf
echo "nameserver $secondary_dns" >> /etc/resolv.conf
echo > /etc/resolv.conf
if [ -f /var/run/qubes-service/set-dns-server ]; then
echo "nameserver $gateway" > /etc/resolv.conf
echo "nameserver $secondary_dns" >> /etc/resolv.conf
fi
if [ -f /var/run/qubes-service/network-manager ]; then
cat > /etc/NetworkManager/system-connections/qubes-uplink-$INTERFACE <<__EOF__
nm_config=/etc/NetworkManager/system-connections/qubes-uplink-$INTERFACE
cat > $nm_config <<__EOF__
[802-3-ethernet]
duplex=full
[ethernet]
mac-address=`ip l show dev $INTERFACE |grep link|awk '{print $2}'`
@ -31,20 +37,28 @@ method=ignore
[ipv4]
method=manual
dns=$gateway;$secondary_dns
address1=$ip/32,$gateway
may-fail=false
__EOF__
chmod 600 /etc/NetworkManager/system-connections/qubes-uplink-$INTERFACE
if [ -f /var/run/qubes-service/set-dns-server ]; then
echo "dns=$gateway;$secondary_dns" >> $nm_config
fi
if [ -f /var/run/qubes-service/set-default-route ]; then
echo "address1=$ip/32,$gateway" >> $nm_config
else
echo "address1=$ip/32" >> $nm_config
fi
chmod 600 $nm_config
fi
network=$(qubesdb-read /qubes-netvm-network 2>/dev/null)
if [ "x$network" != "x" ]; then
if [ "x$network" != "x" ] && [ -f /var/run/qubes-service/set-dns-server ]; then
gateway=$(qubesdb-read /qubes-netvm-gateway)
netmask=$(qubesdb-read /qubes-netvm-netmask)
secondary_dns=$(qubesdb-read /qubes-netvm-secondary-dns)
echo "NS1=$gateway" > /var/run/qubes/qubes-ns
echo "NS2=$secondary_dns" >> /var/run/qubes/qubes-ns
/usr/lib/qubes/qubes-setup-dnat-to-ns
fi
if [ "x$network" != "x" ]; then
[ -x /rw/config/qubes-ip-change-hook ] && /rw/config/qubes-ip-change-hook
# XXX: Backward compatibility
[ -x /rw/config/qubes_ip_change_hook ] && /rw/config/qubes_ip_change_hook

2
vm-init.d/qubes-core
View File

@ -33,6 +33,8 @@ start()
echo "ZONE=\"$timezone\"" >> /etc/sysconfig/clock
fi
touch /var/run/qubes-service/set-default-route
touch /var/run/qubes-service/set-dns-server
yum_proxy_setup=$(/usr/bin/qubesdb-read /qubes-service/yum-proxy-setup 2> /dev/null || /usr/bin/qubesdb-read /qubes-service/updates-proxy-setup 2> /dev/null)
type=$(/usr/bin/qubesdb-read /qubes-vm-type)
if [ "$yum_proxy_setup" != "0" ] || [ -z "$yum_proxy_setup" -a "$type" == "TemplateVM" ]; then

9
vm-systemd/qubes-sysinit.sh
View File

@ -1,11 +1,12 @@
#!/bin/bash
# List of services enabled by default (in case of absence of qubesdb entry)
DEFAULT_ENABLED_NETVM="network-manager qubes-network qubes-update-check qubes-updates-proxy"
DEFAULT_ENABLED_PROXYVM="meminfo-writer qubes-network qubes-firewall qubes-netwatcher qubes-update-check"
DEFAULT_ENABLED_APPVM="meminfo-writer cups qubes-update-check"
DEFAULT_ENABLED_ALL="set-default-route set-dns-server"
DEFAULT_ENABLED_NETVM="$DEFAULT_ENABLED_ALL network-manager qubes-network qubes-update-check qubes-updates-proxy"
DEFAULT_ENABLED_PROXYVM="$DEFAULT_ENABLED_ALL meminfo-writer qubes-network qubes-firewall qubes-netwatcher qubes-update-check"
DEFAULT_ENABLED_APPVM="$DEFAULT_ENABLED_ALL meminfo-writer cups qubes-update-check"
DEFAULT_ENABLED_TEMPLATEVM="$DEFAULT_ENABLED_APPVM updates-proxy-setup"
DEFAULT_ENABLED="meminfo-writer"
DEFAULT_ENABLED="$DEFAULT_ENABLED_ALL meminfo-writer"
QDB_READ=qubesdb-read
QDB_LS=qubesdb-multiread