#!/bin/bash
case "$1" in
    start)
	echo -n "copying contents of writable directories to ram... "
	
	cp --preserve=all -P -r /root /rw
	cp --preserve=all -P -r /var/log /rw
	# Add any other directories you wish to have write access to
	# Make sure fstab has the last dir in source path mounted in /rw
	#cp --preserve=all -P -r /source/dirname /rw	
	echo "done"
	echo -n "binding tmpfs's over /.... "
	mount --bind /rw/log /var/log
	mount --bind /rw/root /root
	# Any additions you made in /rw should be mount binded here
	#mount --bind /rw/dirname /source/dirname
    ;;	
    restart)
	# Write access to the underlying filesystem is required here, we also want atimes updated
	mount -o remount,rw /
	echo -n "Copying updated files back to CF..."
	mkdir /tmp/root_fs_copy
	mount --bind / /tmp/root_fs_copy
	cp -u -r /var/log /tmp/root_fs_copy/var
	cp -u -r /root /tmp/root_fs_copy
	# Any tmpfs data you wish to keep over restarts must be synced
	# to underlying fs
	#cp -u -r /source/dirname /tmp/root_fs_copy/source
	sync
	echo "Done"
	umount /tmp/root_fs_copy
	rmdir /tmp/root_fs_copy
	# remount the root fs back to the way you had it
	mount -o remount,rw,noatime /
    ;;
esac
exit 0