#!/bin/sh

echo Starting System...

mount -t proc proc /proc

if [ -n "$XANDROSBOOTDEBUG" ]; then
    /bin/busybox sh
    set -x
fi

ROOT=`cat /proc/cmdline | sed 's/.*root=// ; s/ .*//'`
USER=`cat /proc/cmdline | sed 's/.*eee_user=// ; s/ .*//'`
VERSION=`cat /proc/version | cut -f3 -d" "`

mount -t ext2 -o ro $ROOT /mnt-system
if [ $? -ne 0 ]; then
    echo Could not mount OS on $ROOT. Starting debugging shell....
    /bin/busybox sh
fi

# load some useful things
insmod /mnt-system/lib/modules/$VERSION/kernel/drivers/usb/core/usbcore.ko > /dev/null
insmod /mnt-system/lib/modules/$VERSION/kernel/drivers/usb/host/ehci-hcd.ko > /dev/null
insmod /mnt-system/lib/modules/$VERSION/kernel/drivers/usb/storage/libusual.ko > /dev/null
insmod /mnt-system/lib/modules/$VERSION/kernel/drivers/usb/storage/usb-storage.ko > /dev/null
insmod /modules/dm-mod.ko
insmod /modules/dm-crypt.ko
insmod /mnt-system/lib/modules/$VERSION/kernel/crypto/aes.ko
insmod /mnt-system/lib/modules/$VERSION/kernel/crypto/blkcipher.ko
insmod /mnt-system/lib/modules/$VERSION/kernel/crypto/cbc.ko
insmod /mnt-system/lib/modules/$VERSION/kernel/crypto/sha256.ko
insmod /mnt-system/lib/modules/$VERSION/kernel/crypto/cryptomgr.ko

if [ $USER = "ram" ]; then
    mount -t tmpfs tmpfs /mnt-user
    retval=$?
    mkdir -p /mnt-user/home/user
    /mnt-system/bin/chown 1000:1000 /mnt-user/home/user
    echo -n > /mnt-user/home/user/.firstrundone
else
    echo Waiting for user overlay device $USER
    while ! grep -q $USER /proc/partitions; do sleep 1; done
    echo User overlay found.
    if cryptsetup isLuks /dev/$USER; then
        cryptsetup luksOpen /dev/$USER ${USER}_crypt
        USER=dm-0
    fi
    mount -t ext3 -o rw,noatime,nodiratime /dev/$USER /mnt-user
    retval=$?
fi
if [ $retval -ne 0 ]; then
    echo Error mounting user partition. Starting debugging shell....
    /bin/busybox sh
fi 

if [ -n "$XANDROSBOOTDEBUG" ]; then
    /bin/busybox sh
fi

mount -t unionfs -o dirs=/mnt-user=rw:/mnt-system=ro unionfs /mnt
if [ $? -ne 0 ]; then
    echo Could not mount unionfs. Starting debugging shell....
    /bin/busybox sh
fi

mount --move /mnt-system /mnt/mnt
umount -l /mnt-user

umount /proc

if [ -n "$INIT" ]; then
    if [ -n "$XANDROSBOOTDEBUG" ]; then
    exec switch_root /mnt $INIT </mnt/dev/console >/mnt/dev/console
    else
    exec switch_root /mnt $INIT </mnt/dev/null >/mnt/dev/null
    fi
else
    exec switch_root /mnt /sbin/fastinit "$@" </mnt/dev/console >/mnt/dev/console
fi

echo 
echo Init Failed. Starting emergency shell....
/bin/busybox sh