#! /bin/sh

grep -q ' /mnt/onboard ' /proc/mounts && exit 1

DISK=/dev/mmcblk

legacy() {
	PARTITION=${DISK}0p3
	LOADED_MODULE=$(grep -oE '^g_(file|mass)_storage\b' /proc/modules)

	case "$LOADED_MODULE" in
		g_file_storage)
			rmmod g_file_storage

			case "$PLATFORM" in
				mx6[su]ll-ntx)
					rmmod usb_f_mass_storage
					rmmod libcomposite
					rmmod configfs
					;;
				*)
					[ "$PLATFORM" != mx6sl-ntx ] && rmmod arcotg_udc
					;;
			esac
			;;
		g_mass_storage)
			rmmod g_mass_storage
			;;
		*)
			exit 1
			;;
	esac

	sleep 1
}

mtk() {
	PARTITION=${DISK}0p12
	DIR=/sys/kernel/config/usb_gadget/g1

	mkdir -p "$DIR"/strings/0x409
	echo "" > "$DIR"/UDC

	rm "$DIR"/configs/c.1/mass_storage.0
	rmdir "$DIR"/configs/c.1/strings/0x409
	rmdir "$DIR"/configs/c.1
	rmdir "$DIR"/functions/mass_storage.0
	rmdir "$DIR"/strings/0x409
	rmdir "$DIR"
}

case "$PLATFORM" in
	mt8113t-ntx)
		mtk
		;;
	*)
		legacy
		;;
esac

MOUNT_ARGS="noatime,nodiratime,shortname=mixed,utf8"

FS_CORRUPT=0
dosfsck -a -w "$PARTITION" || dosfsck -a -w "$PARTITION" || FS_CORRUPT=1
[ "$FS_CORRUPT" -eq 1 ] && reboot

mount -o "$MOUNT_ARGS" -t vfat "$PARTITION" /mnt/onboard || reboot

PARTITION=${DISK}1p1

[ -e "$PARTITION" ] && mount -o "$MOUNT_ARGS" -t vfat "$PARTITION" /mnt/sd