#! /usr/bin/env bash

start() {
	[ -d /ramdisk/sys ] && rm -rf /ramdisk/sys
	[ -d /ramdisk/tmp ] && rm -rf /ramdisk/tmp
	mkdir -p /ramdisk/sys
	mkdir -p /ramdisk/tmp

	echo "Bienvenue dans le ramdisk"
	mount -t tmpfs -o size=32G tmpfs /ramdisk/sys
	mount -t tmpfs -o size=32G tmpfs /ramdisk/tmp
	echo "ramdisk monté!"

	if [ -d /ramdisk/persist ]; then
		cp -a /ramdisk/persist/* /ramdisk/sys/
		echo "Données persistentes copiées!"
	fi
	mount -o remount,ro /ramdisk/sys
}

stop() {
	umount /ramdisk/sys
	rm -rf /ramdisk/sys
	umount /ramdisk/tmp
	rm -rf /ramdisk/tmp
	echo "ramdisk démonté!"
}

help() {
	echo "ramdisk.sh start|stop"
	echo "  Mount a readonly ramdisk to /ramdisk/sys and a read-write one to /ramdisk/tmp"
}

case "$1" in
	"start")
		start
		;;
	"stop")
		stop
		;;
	*)
		help
		;;
esac