#!/system/bin/sh
# MAD Team App2SD (Cyanogen 7)
# by subpsyke

swapfile="/system/etc/init.d/06swap"
LOG="/dev/null"

checkapp2sd() {
mount -t ext4 -o nodev,nosuid /dev/block/mmcblk0p2 /system/sd

if [ -f /system/sd/.app2sd_enabled ]; then
	result="app2sd"
else
	result="normal"
fi
}

checkspace() {
sdused=`du -c /system/sd/ | tail -n1 | awk ' { print $1 } '`
sdfree=`df /system/sd/ | tail -n1 | awk ' { print $4 } '`
phoneused=`du -c /data | tail -n1 | awk ' { print $1 } '`
phonefree=`df /data | tail -n1 | awk ' { print $4 } '`
}

convert_app2sd() {
mount -t ext4 -o nodev,nosuid /dev/block/stl13 /data
sleep 5
rm -r /data
sync
sleep 5
cp -a /system/sd/data /
sync
sleep 5
umount /dev/block/mmcblk0p2
mke2fs -t ext4 -O ^huge_file /dev/block/stl14
sleep 5
mke2fs -t ext4 -O ^huge_file /dev/block/mmcblk0p2
sleep 5
}

convert_normal() {
umount /dev/block/mmcblk0p2
mke2fs -O journal_dev /dev/block/stl14
sleep 5
mke2fs -t ext4 -O ^huge_file -J device=/dev/block/stl14 /dev/block/mmcblk0p2
sleep 5
mount -t ext4 -o nodev,nosuid /dev/block/mmcblk0p2 /system/sd
mount -t ext4 -o nodev,nosuid /dev/block/stl13 /data
sleep 5
cp -a /data /system/sd/
sync
sleep 5
rm -r /data
sync
sleep 5
touch /system/sd/.app2sd_enabled
}

mount_normal() {
mount -t ext4 -o nodev,nosuid /dev/block/stl13 /data
mount -t ext4 -o nodev,nosuid /dev/block/stl14 /cache
}

mount_app2sd() {
umount -a
mount -t ext4 -o nodev,nosuid /dev/block/stl14 /cache
if mount | grep /dev/block/stl14 | grep cache; then
	umount /dev/block/stl14
	mke2fs -O journal_dev /dev/block/stl14
	tune2fs -J device=/dev/block/stl14 /dev/block/mmcblk0p2
fi
mount -t ext4 -o nodev,nosuid /dev/block/mmcblk0p2 /system/sd
mkdir /system/sd/data
mount -o bind /system/sd/data /data
mount -t ext4 -o nodev,nosuid /dev/block/stl13 /cache
}

doboot() {
# Run checks
checkapp2sd

# Toggle App2SD
if [ -f /system/sd/.toggleapp2sd ]; then
	rm /system/sd/.toggleapp2sd
	stop
	convert_$result
	if [ "$result" = "normal" ]; then
		result="app2sd"
	else
		result="normal"
	fi
	sleep 5
	stop
	sync
	umount -a
	sync
	stop
	sleep 5
	reboot
fi

mount_$result
}

if [ "$1" = "" ]; then
	checkapp2sd
	checkspace
	echo ""
	echo "Usage: madteam_app2sd [option]"
	echo "Options:"
	echo ""
	echo " * toggle  - disable/enable App2SD"
	echo " * swapon  - enable swap"
	echo " * swapoff - disable swap"
	echo ""
	echo "MAD Team App2SD status:"
	echo ""
	if [ "$result" = "app2sd" ]; then
		echo "App2SD:       activated"
		echo "SD card used: $sdused""KB"
		echo "SD card free: $sdfree""KB"
	else
		echo "App2SD:       deactivated"
		echo "Phone used:   $phoneused""KB"
		echo "Phone free:   $phonefree""KB"
	fi
	echo "Swap size:   " `free | grep Swap | awk ' { print ($2) } '`"KB"
	echo ""
fi


mkdir /system/sd 1>>$LOG 2>>$LOG

if [ "$1" = "doboot" ]; then
	doboot
fi

if [ "$1" = "swapon" ]; then
	echo "#!/system/bin/sh" >$swapfile
	echo "swapon /dev/block/mmcblk0p3" >$swapfile
	chmod +x $swapfile
	$swapfile
	echo "Swap enabled! Setting will be kept on reboot."
fi

if [ "$1" = "swapoff" ]; then
	echo "#!/system/bin/sh" >$swapfile
	echo "swapon /dev/block/mmcblk0p3" >$swapfile
	chmod -x $swapfile
	swapoff /dev/block/mmcblk0p3
	echo "Swap disabled! Setting will be kept on reboot."
fi

if [ "$1" = "toggle" ]; then
	checkapp2sd
	checkspace
	if [ "$result" = "app2sd" ]; then
		echo "Current App2SD status: activated"
		echo ""
		echo "SD card used: $sdused""KB"
		echo "Phone free:   $phonefree""KB"
		echo ""
		if [ $(($sdused)) -gt $(($phonefree)) ]; then
			echo "Not enough space in phone memory to complete operation!"
			echo "Please free " $(($sdused-$phonefree)) "KB from SD card's App2SD partition to continue."
			echo "Aborting!"
		else
			echo "Please reboot your phone to deactivate App2SD."
			echo "Note: your phone will reboot twice. This is normal."
			touch /system/sd/.toggleapp2sd
		fi
	fi
	if [ "$result" = "normal" ]; then
		echo "Current App2SD status: deactivated"
		echo ""
		echo "Phone used:   $phoneused""KB"
		echo "SD card free: $sdfree""KB"
		echo ""
		if [ $(($phoneused)) -gt $(($sdfree)) ]; then
			echo "Not enough space on SD card partition to complete operation!"
			echo "Please free " $(($phoneused-$sdfree)) "KB from Phone to continue."
			echo "Aborting!"
		else
			echo "Please reboot your phone to activate App2SD."
			echo "Note: your phone will reboot twice. This is normal."
			touch /system/sd/.toggleapp2sd
		fi
	fi
fi