startup scripts : assume initscripts is not installed, only use systemctl

[myplc.git] / plc.d / network

diff --git a/plc.d/network b/plc.d/network
index 141bc50..73ac470 100755 (executable)
--- a/plc.d/network
+++ b/plc.d/network
@@ -7,79 +7,51 @@
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id$
-#
 
 # Source function library and configuration
-. /etc/plc.d/functions
-. /etc/planetlab/plc_config
+source /etc/plc.d/functions
+source /etc/planetlab/plc_config
 
 # Be verbose
 set -x
 
+[ "$PLC_HOSTS_ENABLED" -ne 1 ] && exit 0
+
 case "$1" in
     start)
        MESSAGE=$"Generating network files"
        dialog "$MESSAGE"
 
+       mv -f /etc/hosts /etc/hosts_plc.backup
        hfile=$(mktemp)
        # Minimal /etc/hosts
-       (
-           for server in DB API BOOT WWW ; do
-               hostname=PLC_${server}_HOST
-               ip=PLC_${server}_IP
-               if [ -n "${!ip}" ] ; then
-                   echo "${!ip}        ${!hostname}"
-               else
-                   ip=$(gethostbyname ${!hostname})
-                   if [ -n "$ip" ] ; then
-                       echo "$ip       ${!hostname}"
-                   fi
+       for server in DB API BOOT WWW ; do
+           hostname=PLC_${server}_HOST
+           ip=PLC_${server}_IP
+           if [ -n "${!ip}" ] ; then
+               echo "${!ip}    ${!hostname}"
+           else
+               ip=$(gethostbyname ${!hostname})
+               if [ -n "$ip" ] ; then
+                   echo "$ip   ${!hostname}"
                fi
-           done
-       ) > $hfile
-       if [ $PLC_DNS_ENABLED -eq 1 ] ; then
-           target=/etc/plc_hosts
-           sort -u $hfile > $target
-       else
-           target=/etc/hosts
-           cat /etc/hosts >> $hfile
-           echo "#generated by /etc/plc.d/network" >/etc/hosts
-           echo "127.0.0.1     localhost.localdomain localhost" >>/etc/hosts
-           sort -u $hfile >> /etc/hosts
-       fi
-       chmod +r $target
+           fi
+       done > $hfile
+       echo "#generated by /etc/plc.d/network" >/etc/hosts
+       echo "127.0.0.1 localhost.localdomain localhost" >> /etc/hosts
+       sort -u $hfile >> /etc/hosts
+       chmod +r /etc/hosts
        rm -f $hfile
 
-       rfile=$(mktemp)
-       # Set up nameservers
-       (
-           [ -n "$PLC_NET_DNS1" ] && echo "nameserver $PLC_NET_DNS1"
-           [ -n "$PLC_NET_DNS2" -a "$PLC_NET_DNS1" != "$PLC_NET_DNS2" ] && echo "nameserver $PLC_NET_DNS2"
-       ) > $rfile
-
-       if [ $PLC_DNS_ENABLED -eq 1 ] ; then
-           target=/etc/plc_resolv.conf
+       result "$MESSAGE"
+       ;;
 
-           r2file=$(mktemp)
-           echo "; generated by /etc/plc.d/network" >$r2file
-           if [ -n "${!PLC_BOOT_IP}" ] ; then
-               echo "nameserver ${!PLC_BOOT_IP}" >>$r2file
-           else
-                   ip=$(gethostbyname ${!PLC_BOOT_HOST})
-                   if [ -n "$ip" ] ; then
-                       echo "nameserver $ip" >>$r2file
-                   fi
-           fi
-           changed=$(diff $r2file /etc/resolv.conf)
-           [ $changed -ne 0 ] && cp /etc/resolv.conf /etc/resolv.conf.bak
-           mv $r2file /etc/resolv.conf
-       else
-           target=/etc/resolv.conf
+    stop)
+       MESSAGE=$"Reverting network files"
+       if [ -f /etc/hosts_plc.backup ] ; then
+           mv -f /etc/hosts_plc.backup /etc/hosts
        fi
-       mv $rfile $target
-       chmod +r $target
-
+       dialog "$MESSAGE"
        result "$MESSAGE"
        ;;
 esac