#! /bin/sh
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#
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### BEGIN INIT INFO
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# Provides: radvd
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# Required-Start: $remote_fs $named $syslog
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# Required-Stop: $remote_fs $named $syslog
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# Default-Start: 3 5
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# Default-Stop: 0 1 2 6
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# Description: router advertisement daemon
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### END INIT INFO
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# Source function library.
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. /etc/init.d/functions
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PATH=/sbin:/bin:/usr/sbin:/usr/bin
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DAEMON=/usr/sbin/radvd
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NAME=radvd
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DESC=radvd
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CONFIG=/etc/radvd.conf
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SAVED_SETTINGS=/var/run/radvd/saved-settings
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PIDFILE=/var/run/radvd/radvd.pid
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OPTIONS="-u radvd -p $PIDFILE"
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test -x $DAEMON || exit 0
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set -e
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# Check for IPv6 support in kernel
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if test \! -e /proc/sys/net/ipv6; then
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echo "IPv6 support must be enabled in the kernel for $DESC to work."
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exit
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fi
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save_settings()
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{
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local file=$1
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rm -f $file
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for if_conf in /proc/sys/net/ipv6/conf/*; do
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echo -e "$if_conf/forwarding\t `cat $if_conf/forwarding`" >> $file
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done
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return 0
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}
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restore_settings()
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{
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file=$1
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if [ ! -f $file ]; then
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echo "$0: warning: cannot restore settings"
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return
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fi
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(
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while read f value; do
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if [ -w $f ]; then
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echo $value > $f
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fi
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done
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) < $file
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}
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chkconfig() {
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if [ ! -e $CONFIG -o ! -s $CONFIG ]; then
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echo ""
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echo "* $CONFIG does not exist or is empty."
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echo "* See /usr/share/doc/radvd/radvd.conf.example for a simple"
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echo "* configuration suitable for most systems, and radvd.conf(5)"
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echo "* for configuration file syntax. radvd will *not* be started."
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exit 0
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fi
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}
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case "$1" in
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start)
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echo -n "Starting $DESC: "
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chkconfig
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save_settings $SAVED_SETTINGS
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# We must enable IPv6 forwarding for radvd to work
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echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
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# Check for stale pidfile; radvd won't start if one is lying around
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if [ -f $PIDFILE ] && ! ps `cat $PIDFILE` > /dev/null; then
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rm -f $PIDFILE
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fi
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if ! start-stop-daemon --oknodo --start --pidfile $PIDFILE \
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--exec $DAEMON -- $OPTIONS; then
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echo "failed." && exit 1
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fi
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echo "$NAME."
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;;
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stop)
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echo -n "Stopping $DESC: "
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if ! [ -f $PIDFILE ] ; then
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echo "not running."
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exit 0
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fi
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start-stop-daemon --oknodo --stop --pidfile $PIDFILE \
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--exec $DAEMON
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restore_settings $SAVED_SETTINGS
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rm -f $SAVED_SETTINGS
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echo "$NAME."
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;;
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status)
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status $DAEMON;
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exit $?
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;;
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reload|force-reload)
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echo "Reloading $DESC configuration files."
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start-stop-daemon --stop --signal HUP --quiet --pidfile \
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$PIDFILE --exec $DAEMON
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;;
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restart)
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chkconfig
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echo -n "Restarting $DESC: "
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if ! start-stop-daemon --stop --quiet --pidfile \
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$PIDFILE --exec $DAEMON; then
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# stop failed, so we were not running
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save_settings $SAVED_SETTINGS
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echo 1 > /proc/sys/net/ipv6/conf/all/forwarding
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fi
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sleep 1
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start-stop-daemon --start --quiet --pidfile \
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$PIDFILE --exec $DAEMON -- $OPTIONS
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echo "$NAME."
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;;
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*)
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N=/etc/init.d/$NAME
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echo "Usage: $N {start|stop|status|restart|reload|force-reload}" >&2
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exit 1
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;;
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esac
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exit 0
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