# llxcfg-networking

description     "LliureX network upstart service"
author          "Luis Antonio Garcia Gisbert <garcia_luigis@gva.es>"

start on ( started networking or llxnetworking-start )
stop on llxnetworking-stop

emits llxnetworking-stop
emits llxnet-start
emits llxnet-stop


script
	RUN_DIR="/var/run/llx-networking-done"
	AUTO_REGEXP="^[[:blank:]]*auto\b"
	NET_IFACES="/etc/network/interfaces"
	mkdir -p "$RUN_DIR"
	IFACE_LIST=""
	if [ -r "$NET_IFACES" ] ; then
		# find interfaces marked as auto in /etc/network/interfaces
		IFACE_LIST0=" $(sed -ne "/$AUTO_REGEXP/{s%$AUTO_REGEXP%%;p}" "$NET_IFACES") "

		# purge IFACE_LIST0 and build IFACE_LIST
		#	- remove lo 
		#	- remove interfaces wihout an initialization line (iface ...) in /etc/network/interfaces
		#	- remove nonexistent physical interfaces by 'grepping' in /proc/net/dev (for network aliases the ":ALIAS_NAME" part is removed first)
		for IFACE in $IFACE_LIST0 ; do
			if [ "$IFACE" != "lo" ] && grep -q "^[[:blank:]]*iface[[:blank:]]\+$IFACE\b" "$NET_IFACES" ; then
				PIFACE="${IFACE%:*}"
				! grep -q "^[[:blank:]]*$PIFACE:" /proc/net/dev 2>/dev/null || IFACE_LIST="$IFACE_LIST $IFACE"
			fi
		done

		# for each interface, remove runfile in /var/run/llx-networking-done , and emit llxnet-stop/llxnet-start events
		# to trigger the apropiate llcfg-interface instances
		for IFACE in $IFACE_LIST ; do
			RUNFILE="$RUN_DIR/$IFACE"
			/sbin/initctl emit llxnet-stop "INTERFACE=$IFACE"
			sleep 1
			rm -f "$RUNFILE"
			/sbin/initctl emit llxnet-start "INTERFACE=$IFACE" "RUNFILE=$RUNFILE"
		done
	fi

	# wait until llcfg-interface instances terminate or a timeout of $MAX_TIME (120 secs)
	MAX_TIME=120
	SLEEP_TIME=2
	RUNNING_TIME=0
	STOP_SERVICE="N"
	while : ; do
		STOP_SERVICE="Y"	
		for IFACE in $IFACE_LIST ; do
			if [ ! -e "$RUN_DIR/$IFACE" ] ; then
				STOP_SERVICE="N"
			fi
		done
		if [ $RUNNING_TIME -gt $MAX_TIME ] || [ "$STOP_SERVICE" = "Y" ] ; then
			/sbin/initctl emit llxnetworking-stop
		fi
		sleep $SLEEP_TIME
		RUNNING_TIME=$(($RUNNING_TIME + $SLEEP_TIME))
	done

end script

post-stop script
#	echo "llxcfg-networking stop: $(date -R )" >> /root/net.log
	/sbin/initctl emit llxnet-stop-all
	/sbin/initctl emit llxnetworking-done
end script