5 # Start local DNS server to provide minimal DNS forward resolution for
6 # ourselves and our nodes.
8 # Mark Huang <mlhuang@cs.princeton.edu>
9 # Copyright (C) 2006 The Trustees of Princeton University
12 # Source function library and configuration
13 . /etc/plc.d/functions
14 . /etc/planetlab/plc_config
16 SIGNATURE="; generated by /etc/plc.d/dns --- DO NOT REMOVE THIS TEXT"
23 if [ $PLC_DNS_ENABLED -eq 1 ] ; then
24 MESSAGE="Starting DNS server"
32 if [ -n "$PLC_NET_DNS1" -o -n "$PLC_NET_DNS2" ] ; then
33 MESSAGE="Configuring resolv.conf"
39 [ -n "$PLC_NET_DNS1" ] && echo "nameserver $PLC_NET_DNS1"
40 [ -n "$PLC_NET_DNS2" -a "$PLC_NET_DNS1" != "$PLC_NET_DNS2" ] && echo "nameserver $PLC_NET_DNS2"
43 if [ $PLC_DNS_ENABLED -eq 1 ] ; then
44 ourfile=$(grep "$SIGNATURE" /etc/resolv.conf| wc -l)
45 if [ $ourfile -eq 0 ] ; then
46 cp /etc/resolv.conf /etc/plc_resolv.conf
49 cp /etc/resolv.conf /etc/resolv_plc.backup
51 mv -f $rfile /etc/resolv.conf
52 chmod 444 /etc/resolv.conf
55 if [ $PLC_DNS_ENABLED -eq 1 ] ; then
64 if [ $PLC_DNS_ENABLED -eq 1 ] ; then
65 MESSAGE=$"Reverting /etc/resolv.conf"
67 if [ -f "/etc/plc_resolv.conf" ] ; then
68 ourfile=$(grep "$SIGNATURE" /etc/plc_resolv.conf| wc -l)
69 if [ $ourfile -ne 0 ] ; then
70 dialog "WARNING: original /etc/resolv.conf was generated by etc/plc.d/dns"
72 mv -f /etc/plc_resolv.conf /etc/resolv.conf
76 MESSAGE=$"Removing /etc/plc_hosts"
78 [ -f "/etc/plc_hosts" ] && rm -f /etc/plc_hosts
81 if [ $PLC_DNS_ENABLED -eq 0 -a -f "/etc/resolv_plc.backup" ] ; then
82 MESSAGE="Restoring /etc/resolv.conf"
84 mv -f /etc/resolv_plc.backup /etc/resolv.conf
88 if [ $PLC_DNS_ENABLED -eq 1 ] ; then
89 MESSAGE="Stopping DNS server"