#!/bin/sh

rescue_shell() {
    echo "$@"
    echo "Dropping to a shell."
    exec /bin/sh
}

mount_boot() {
    mount -o rw /dev/mmcblk0p1 /mnt/boot
}

mount_root() {
    for cmd in $(cat /proc/cmdline) ; do
        case $cmd in
        root=*)
            type=$(echo $cmd | cut -d= -f2)
            echo "Mounting rootfs"
            if [ $type == "LABEL" ] || [ $type == "UUID" ]; then # PARTUUID ?
                uuid=$(echo $cmd | cut -d= -f3)
                mount -o rw $(findfs "$type"="$uuid") /mnt/root
            else    # mount like /dev/sda1
                mount -o rw $(echo $cmd | cut -d= -f2) /mnt/root
            fi
            ;;
        esac
    done
}

load_network() {
    ifup -a
    ip=`ifconfig eth0 | grep -Eo 'inet (addr:)?([0-9]*\.){3}[0-9]*' | grep -Eo '([0-9]*\.){3}[0-9]*'`
    echo "IP: $ip"
}

# temporarily mount proc and sys
mount -t proc none /proc
mount -t sysfs none /sys
mount -t devtmpfs none /dev

# disable kernel messages from popping onto the screen
echo 0 > /proc/sys/kernel/printk

# clear the screen
clear

echo "Recovery Mode"
echo "Waiting for disks..."
sleep 5
echo "Disks ready!"

load_network

/bin/hello_try

# mounting boot on /mnt/boot
mount_boot || rescue_shell "Error while boot mounting!"
# mounting rootfs on /mnt/root
mount_root || rescue_shell "Error while root mounting!"

#ln -s /mnt/root/etc/fstab /etc/fstab

echo "All done. Trying to boot..."

rescue_shell # debug only

# clean up. The init process will remount proc sys and dev later
umount /proc
umount /sys
umount /dev

# switch to the real root and execute init
exec switch_root /mnt/root /sbin/init