userspace/lighttpd: save pidfile for lighttpd

Additionally change startup script to use start-stop-daemon
Note: start-stop-daemon does not create pid file

Signed-off-by: Adam Wujek <adam.wujek@cern.ch>

userspace/rootfs_override/etc/init.d/lighttpd.sh

@@ -16,15 +16,27 @@ start_counter() {
 }
 
 start() {
- 	echo -n "Starting lighttpd daemon: "
-	/usr/sbin/lighttpd -f /var/www/lighttpd.config
-	start_counter
-	echo "OK"
+	echo -n "Starting lighttpd daemon: "
+	# note start-stop-daemon does not create pidfile, only check if pid is
+	# running
+	start-stop-daemon -q -p /var/run/lighttpd.pid -S \
+		--exec /usr/sbin/lighttpd -- -f /var/www/lighttpd.config
+	if [ $? -eq 0 ]; then
+		start_counter
+		echo "OK"
+	else
+		echo "Failed (already running?)"
+	fi
 }
 stop() {
 	echo -n "Stopping lighttpd daemon: "
-	killall lighttpd	
-	echo "OK"
+	start-stop-daemon -K -q -p /var/run/lighttpd.pid
+	if [ $? -eq 0 ]; then
+		start_counter
+		echo "OK"
+	else
+		echo "Failed"
+	fi
 }
 restart() {
 	stop

userspace/rootfs_override/var/www/lighttpd.config

@@ -126,4 +126,5 @@ fastcgi.server = ( ".php" => ((
 ## where to upload files to, purged daily.
 server.upload-dirs = ( "/tmp" )
 
+server.pid-file = "/var/run/lighttpd.pid"