#!/bin/bash

# SPDX-License-Identifier: LicenseRef-Unisoc-General-1.0
#
# Copyright 2016-2023 Unisoc (Shanghai) Technologies Co., Ltd
#
# Licensed under the Unisoc General Software License, version 1.0 (the License);
# you may not use this file except in compliance with the License. You may obtain a copy of the License at
#
# https://www.unisoc.com/en_us/license/UNISOC_GENERAL_LICENSE_V1.0-EN_US
#
# Software distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OF ANY KIND, either express or implied.
# See the Unisoc General Software License, version 1.0 for more details.
#

MOUNT_POINT="rootfs"

function mnt() {
    mkdir -p ${MOUNT_POINT}
    sudo mount -t ext4 -o loop $2 ${MOUNT_POINT}
    sudo cp  /usr/bin/qemu-aarch64-static  ${MOUNT_POINT}/usr/bin/
    cp /etc/resolv.conf  ~/

    sudo mount -t proc /proc ${MOUNT_POINT}/proc
    sudo mount -t sysfs /sys ${MOUNT_POINT}/sys
    sudo mount -o bind /dev ${MOUNT_POINT}/dev
    sudo mount -o bind /dev/pts ${MOUNT_POINT}/dev/pts 

    sudo mount -o bind ${HOME}  ${MOUNT_POINT}/mnt
    sudo chroot ${MOUNT_POINT}
}

function umnt() {
    sudo umount ${MOUNT_POINT}/mnt	
    sudo umount ${MOUNT_POINT}/proc
    sudo umount ${MOUNT_POINT}/sys
    sudo umount ${MOUNT_POINT}/dev/pts
    sudo umount ${MOUNT_POINT}/dev
    sudo umount ${MOUNT_POINT}
}

if [ "$1" == "-m" ] && [ -n "$2" ] ;
then
    mnt $1 $2
elif [ "$1" == "-u" ] ;
then
    umnt $1
else
    echo "1'st parameter can be one of these: -m(mount) OR -u(umount)"
    echo "2'nd parameter is ubuntu.ext4"
    echo ""
    echo "For example: ch-mount -m ubuntu.ext4"
    echo ""
    echo 1st parameter : ${1}
    echo 2nd parameter : ${2}
fi