Add 'etc-init.d-swapfile'

etc-init.d-swapfile

@@ -0,0 +1,83 @@
+#!/bin/sh /etc/rc.common
+# (C) 2016 - 2023 Fernao Vellozo
+# This is free software under the terms of GPLv3
+
+START=90
+
+EXTRA_COMMANDS="status create"
+EXTRA_HELP="	status 	Check service status
+	create 	Create a swapfile"
+
+SWPATH="/mnt/routerdata/swapfile"
+
+boot() {
+	if [ -f $SWPATH ]; then
+		swapon $SWPATH
+		logger "swapfile started on boot"
+	else
+		logger "ERROR: swapfile not found"
+	fi
+}
+
+start() {
+	if [ -f $SWPATH ]; then
+		swapon $SWPATH
+		logger "swapfile started"
+		echo "SwapFile started"
+	else
+		logger "ERROR: swapfile not found"
+		echo "ERROR: SwapFile not found at "$SWPATH
+	fi
+}
+
+restart() {
+	if [ -f $SWPATH ]; then
+		swapoff $SWPATH
+		swapon $SWPATH
+		logger "swapfile stopped, reloading..."
+		echo "SwapFile Reloaded"
+	else
+		logger "ERROR: swapfile not found"
+		echo "ERROR: SwapFile not found at "$SWPATH
+	fi
+}
+
+stop() {
+	if [ -f $SWPATH ]; then
+		swapoff $SWPATH
+		logger "swapfile stopped"
+		echo "SwapFile stopped "$SWPATH
+	else
+		logger "ERROR: swapfile not found"
+		echo "ERROR: SwapFile not found at "$SWPATH
+	fi
+}
+
+create() {
+	RAMTOTAL=`fgrep MemTotal /proc/meminfo | awk '{print $2}'`
+	SWAPTOTAL=`fgrep SwapTotal /proc/meminfo | awk '{print $2}'`
+	if [ $SWAPTOTAL != 0 ]; then                      
+		echo "ERROR: Swap already in use, quitting..."
+	else
+		dd if=/dev/zero of=$SWFILE bs=1024 count=$RAMTOTAL
+		mkswap -L SWAPFILE $SWFILE
+		chmod 600 $SWFILE
+		/etc/init.d/swapfile enable
+		logger "SwapFile created"
+		echo "SwapFile successfully created, enabled to run after the next reboot"
+	fi
+}
+
+status() {
+	SWAPTOTAL=`fgrep SwapTotal /proc/meminfo | awk '{print $2}'`
+	if [ $SWAPTOTAL == 0 ]; then
+		echo "No swap memory available"
+	else
+		echo $SWAPTOTAL "KB of swap are available"
+		if [ -f $SWPATH ]; then
+			echo "Swapfile is located at "$SWPATH
+		else
+			echo "Swap memory has been loaded, but not from here"
+		fi
+	fi
+}