setup.sh

#!/bin/bash
#support: www.cool-pi.com

for pkg in {binfmt-support,qemu-user-static,debootstrap,wget,kpartx}
do
    dpkg-query -s $pkg > /dev/null 2>&1
    if [[ ! $? -eq 0 ]]; then
        sudo apt install -y $pkg
    fi
done

TOPDIR=`pwd`

clear

echo "***************************************************"
echo "https://www.cool-pi.com"
echo "***************************************************"
cat << EOF
Select Ubuntu or Debian Version:
    1. Ubuntu18.04 32bit armhf
    2. Ubuntu18.04 64bit arm64
    3. Ubuntu20.04 32bit armhf
    4. Ubuntu20.04 64bit arm64
    5. Ubuntu22.04 32bit armhf
    6. Ubuntu22.04 64bit arm64
    7. Ubuntu23.04 32bit armhf
    8. Ubuntu23.04 64bit arm64
    9. Debian12 32bit armhf
   10. Debian12 64bit arm64
   11. Debian11 32bit armhf
   12. Debian11 64bit arm64
   13. Debian10 32bit armhf
   14. Debian10 64bit arm64
   15. Ubuntu22.04 64bit amd64
   16. Ubuntu20.04 64bit amd64
   17. Ubuntu18.04 64bit amd64
   18. Openkylin 64bit arm64
   q.  Quit
EOF
read -r -p "Which version select[1-18]: " opt
case $opt in
1)
    export ARCH="armhf"
    export VER_UBUNTU="18.04.5"
    export VER_SUM="09730a1dfe882f6e81c983d3deb10a9a"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_CODE="bionic"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
2)
    export ARCH="arm64"
    export VER_UBUNTU="18.04.5"
    export VER_SUM="5daeef877b716438584db842e49ff1e9"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_CODE="bionic"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
3)
    export ARCH="armhf"
    export VER_UBUNTU="20.04.5"
    export VER_SUM="16aacbdc2700bb3a9eceb2bb04668a7a"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_CODE="focal"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
4)
    export ARCH="arm64"
    export VER_UBUNTU="20.04.5"
    export VER_SUM="a207a1a6ecdaec5a165cbae3daac83a6"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_CODE="focal"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
5)
    export ARCH="armhf"
    export VER_UBUNTU="22.04.2"
    export VER_SUM="2b45cd48b94d3fe89624e4a4e238ef0f"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_CODE="jammy"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
6)
    export ARCH="arm64"
    export VER_UBUNTU="22.04.2"
    export VER_SUM="ad795d8ef6da675ad7571e1b0d1c090a"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_CODE="jammy"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
7)
    export ARCH="armhf"
    export VER_UBUNTU="23.04"
    export VER_SUM="f24f0fc28a8ca015d30203b34a60113a"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_CODE="lunar"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
8)
    export ARCH="arm64"
    export VER_UBUNTU="23.04"
    export VER_SUM="00fb4cd923edf2b7efa18b038af0dc70"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_CODE="lunar"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
9)
    export ARCH="armhf"
    export VER_CODE="bookworm"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_DEBIAN="12"
    export ROOTFS=$TOPDIR/rootfs_debian_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="debian-base-${VER_DEBIAN}-custom-${ARCH}.tar.gz"
    #export MIRROR_SERVER="http://ftp.cn.debian.org/debian"
    export MIRROR_SERVER="https://mirrors.ustc.edu.cn/debian"
    export IMG_PRE="debian-"${VER_DEBIAN}
    ;;
10)
    export ARCH="arm64"
    export VER_CODE="bookworm"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_DEBIAN="12"
    export ROOTFS=$TOPDIR/rootfs_debian${VER_DEBIAN}_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="debian-base-${VER_DEBIAN}-custom-${ARCH}.tar.gz"
    #export MIRROR_SERVER="http://ftp.cn.debian.org/debian"
    export MIRROR_SERVER="https://mirrors.ustc.edu.cn/debian"
    export IMG_PRE="debian-"${VER_DEBIAN}
    ;;
11)
    export ARCH="armhf"
    export VER_CODE="bullseye"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_DEBIAN="11"
    export ROOTFS=$TOPDIR/rootfs_debian${VER_DEBIAN}_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="debian-base-${VER_DEBIAN}-custom-${ARCH}.tar.gz"
    export MIRROR_SERVER="https://mirrors.ustc.edu.cn/debian"
    export IMG_PRE="debian-"${VER_DEBIAN}
    ;;
12)
    export ARCH="arm64"
    export VER_CODE="bullseye"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_DEBIAN="11"
    export ROOTFS=$TOPDIR/rootfs_debian${VER_DEBIAN}_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="debian-base-${VER_DEBIAN}-custom-${ARCH}.tar.gz"
    export MIRROR_SERVER="https://mirrors.ustc.edu.cn/debian"
    export IMG_PRE="debian-"${VER_DEBIAN}
    ;;
13)
    export ARCH="arm"
    export VER_CODE="buster"
    export QEMU_BIN="/usr/bin/qemu-arm-static"
    export VER_DEBIAN="10"
    export ROOTFS=$TOPDIR/rootfs_debian${VER_DEBIAN}_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="debian-base-${VER_DEBIAN}-custom-${ARCH}.tar.gz"
    export MIRROR_SERVER="https://mirrors.ustc.edu.cn/debian"
    export IMG_PRE="debian-"${VER_DEBIAN}
    ;;
14)
    export ARCH="arm64"
    export VER_CODE="buster"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_DEBIAN="10"
    export ROOTFS=$TOPDIR/rootfs_debian_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="debian-base-${VER_DEBIAN}-custom-${ARCH}.tar.gz"
    export MIRROR_SERVER="https://mirrors.ustc.edu.cn/debian"
    export IMG_PRE="debian-"${VER_DEBIAN}
    ;;
15)
    export ARCH="amd64"
    export VER_UBUNTU="22.04.2"
    export VER_SUM="1b1fa7f402ece1ead88a7bd406669be3"
    export QEMU_BIN="/usr/bin/qemu-x86_64-static"
    export VER_CODE="jammy"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
16)
    export ARCH="amd64"
    export VER_UBUNTU="20.04.5"
    export VER_SUM="be0777779f01814b785ea7881f733719"
    export QEMU_BIN="/usr/bin/qemu-x86_64-static"
    export VER_CODE="jammy"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
17)
    export ARCH="amd64"
    export VER_UBUNTU="18.04.5"
    export VER_SUM="43ebc182ae8174b006b42d4f14e480a9"
    export QEMU_BIN="/usr/bin/qemu-x86_64-static"
    export VER_CODE="bionic"
    export ROOTFS=$TOPDIR/rootfs_ubuntu_${VER_UBUNTU}_${ARCH}
    export DOWNLOAD_TAR="ubuntu-base-${VER_UBUNTU}-base-${ARCH}.tar.gz"
    export CUSTOM_TAR="ubuntu-base-${VER_UBUNTU}-custom-${ARCH}.tar.gz"
    export IMG_PRE="ubuntu-"${VER_UBUNTU}
    ;;
18)
    export ARCH="arm64"
    export VER_CODE="yangtze"
    export QEMU_BIN="/usr/bin/qemu-aarch64-static"
    export VER_OPENKYLIN="1.0"
    export ROOTFS=$TOPDIR/rootfs_openkylin_${VER_CODE}_${ARCH}
    export CUSTOM_TAR="openkylin-base-${VER_OPENKYLIN}-custom-${ARCH}.tar.gz"
    export MIRROR_SERVER="http://archive.build.openkylin.top/openkylin"
    export IMG_PRE="openkylin-"${VER_OPENKYLIN}
    ;;
[qQ])
    exit 0
    ;;
*)
    echo "Invalid option. Exit Now."
    exit 1
    ;;
esac

echo "***************************************************"
cat << EOF
Select rebuild or update root filesystem:
    1. Clean and rebuild
    2. Only mount and enter
    3. Quit
EOF
read -r -p "Which Operate select[1-3]: " opt
case $opt in
1)
    OPS="rebuild"	
    ;;
2)
    OPS="update"
    ;;
3)
    exit 0
    ;;
*)
    exit 1
esac
 
trap step_exit INT

step_custom_img_uninit()
{
    cd $TOPDIR
    if [ -e /dev/mapper/${map_dev}p1 ]; then
        sudo umount $ROOTFS/boot/firmware
        sudo umount $ROOTFS/
        dnode=`mount | grep mapper | awk {'print $3'}`
        sudo umount $dnode > /dev/null 2>&1
        sudo kpartx -dv /dev/$map_dev
        sudo losetup -d /dev/$map_dev
        sync
    fi
}

step_exit()
{
    #logout
    sudo umount -lf $ROOTFS/dev/pts
    sudo umount -lf $ROOTFS/dev
    sudo umount $ROOTFS/sys
    sudo umount $ROOTFS/proc
    if [ ! -z $QEMU_BIN ]; then
        sudo rm -f $ROOTFS/$QEMU_BIN
    fi
    sudo rm -rf $ROOTFS/root/extra

    read -r -p "Regenerate rootfs tarball?(Y/N)" opt
    case $opt in
    [yY][eE][sS]|[yY])
        sel="yes"
        ;;
    [nN][oO]|[nN])
        sel="no"
        ;;
    *)
        echo "Invalid option.Use Default Yes."
        sel="yes"
        ;;
    esac
    
    if [ $sel == "yes" ]; then
        cd $ROOTFS
        sudo tar -czf ../${CUSTOM_TAR} *
    fi

    step_custom_img_uninit
}

step_auto_install()
{
    sudo cp -a extra $ROOTFS/root
    sudo cp -a $QEMU_BIN $ROOTFS/usr/bin
    sudo mount -t proc proc $ROOTFS/proc
    sudo mount -t sysfs sysfs $ROOTFS/sys
    sudo mount --bind /dev $ROOTFS/dev
    sudo mount --bind /dev/pts $ROOTFS/dev/pts
    HOME=/root sudo chroot $ROOTFS /bin/bash << "EOT"
    cd ~

    cp /etc/apt/sources.list /etc/apt/sources.list_orig
    sed -i 's/ports.ubuntu.com/mirrors.aliyun.com/g' /etc/apt/sources.list
    apt update
    apt install -f -y
    apt install -y sudo
   
    cat << EOF > /etc/apt/apt.conf.d/10periodic
APT::Periodic::Update-Package-Lists "0";
APT::Periodic::Download-Upgradeable-Packages "0";
APT::Periodic::AutocleanInterval "0";
EOF

    cat << EOF > /etc/apt/apt.conf.d/20auto-upgrades
APT::Periodic::Update-Package-Lists "0";
APT::Periodic::Unattended-Upgrade "0";
EOF

    adduser -q --disabled-password --gecos "" coolpi
    usermod -aG sudo coolpi
    usermod -p '$y$j9T$PjbenLFFdUtqQtA4PwV6j.$kyBloe9JwsWQYGWb9aP4cXR5Rg.I1Y8NrMD0wnCg.x9' coolpi

    echo "coolpi" > /etc/hostname
    echo -e "127.0.0.1    localhost \n127.0.1.1    `cat /etc/hostname`\n" > /etc/hosts

    cd /root/extra && ./extra_install.sh
    cd ~

    apt clean
    mv /etc/apt/sources.list_orig /etc/apt/sources.list
    history -c
    if [ -f ~/.bash_history ]; then
        rm ~/.bash_history
    fi

EOT
}

step_custom_img_init()
{
cat << EOF
Select Board Type:
    1. 4b
    2. cm5 evb
    3. cm5 minipc
    4. cm5 notebook
EOF
read -r -p "Which board select[1-4]: " opt
case $opt in
1)
    BOARD_NAME="4b"
    DEB_KERNEL_H="linux-headers-5.10.110_4b_100_arm64.deb"
    DEB_KERNEL_I="linux-image-5.10.110_4b_100_arm64.deb"
    SUM_DEB_KERNEL_H="86a21b051459bd4707787bb41b518541"
    SUM_DEB_KERNEL_I="83d3aef6df6ddaeaf6e3127d7c201560"
    LINK_DEB_KERNEL_HEADER="https://github.com/yanyitech/coolpi-kernel/releases/download/v1.0.0/linux-headers-5.10.110_4b_100_arm64.deb"
    LINK_DEB_KERNEL_IMAGE="https://github.com/yanyitech/coolpi-kernel/releases/download/v1.0.0/linux-image-5.10.110_4b_100_arm64.deb"
    ;;
2)
    BOARD_NAME="cm5evb"
    DEB_KERNEL_H="linux-headers-5.10.110_cm5evb_100_arm64.deb"
    DEB_KERNEL_I="linux-image-5.10.110_cm5evb_100_arm64.deb"
    SUM_DEB_KERNEL_H="ed83e40f512852d3304440be5b1fa1ad"
    SUM_DEB_KERNEL_I="b2ccb94e58e5e6f6a4a3446d18680714"
    LINK_DEB_KERNEL_HEADER="https://github.com/yanyitech/coolpi-kernel/releases/download/v1.0.0/linux-headers-5.10.110_cm5evb_100_arm64.deb"
    LINK_DEB_KERNEL_IMAGE="https://github.com/yanyitech/coolpi-kernel/releases/download/v1.0.0/linux-image-5.10.110_cm5evb_100_arm64.deb"
    ;;
4)
    BOARD_NAME="cm5notebook"
    DEB_KERNEL_H="linux-headers-5.10.110_cm5notebook_100_arm64.deb"
    DEB_KERNEL_I="linux-image-5.10.110_cm5notebook_100_arm64.deb"
    SUM_DEB_KERNEL_H="213b7311281eb90ff0401cd79f55b0c5"
    SUM_DEB_KERNEL_I="da7e8164ce0d93c1a3ef387254a9ce77"
    LINK_DEB_KERNEL_HEADER="https://github.com/yanyitech/coolpi-kernel/releases/download/v1.0.0/linux-headers-5.10.110_cm5notebook_100_arm64.deb"
    LINK_DEB_KERNEL_IMAGE="https://github.com/yanyitech/coolpi-kernel/releases/download/v1.0.0/linux-image-5.10.110_cm5notebook_100_arm64.deb"
    ;;
[qQ])
    exit 0
    ;;
*)
    echo "Invalid option. Exit Now."
    exit 1
    ;;
esac

    if [ ! -f ${DEB_KERNEL_H} ]; then
        wget -cP ${TOPDIR} ${LINK_DEB_KERNEL_HEADER}
    fi
    if [ ! -f ${DEB_KERNEL_I} ]; then
        wget -cP ${TOPDIR} ${LINK_DEB_KERNEL_IMAGE}
    fi

    check=`md5sum ${DEB_KERNEL_H} |  awk '{print $1}'`
    if [ x$check != x"${SUM_DEB_KERNEL_H}" ]; then
        echo "File check sum failed. Current file sum: [$check]"
	mv ${DEB_KERNEL_H} ${DEB_KERNEL_H}_bad_sum
        exit 0
    fi
    check=`md5sum ${DEB_KERNEL_I} |  awk '{print $1}'`
    if [ x$check != x"${SUM_DEB_KERNEL_I}" ]; then
        echo "File check sum failed. Current file sum: [$check]"
	mv ${DEB_KERNEL_I} ${DEB_KERNEL_I}_bad_sum
        exit 0
    fi
    rm -f ${TOPDIR}/extra/${DEB_KERNEL_H}
    rm -f ${TOPDIR}/extra/${DEB_KERNEL_I}
    rm -f ${TOPDIR}/extra/linux-*.deb
    cp ${DEB_KERNEL_H} ${TOPDIR}/extra
    cp ${DEB_KERNEL_I} ${TOPDIR}/extra

    IMG_SIZE="8192"

    map_dev=`sudo losetup -f | cut -d / -f 3`
    disk=coolpi-${BOARD_NAME}-${ARCH}-${IMG_PRE}.img
    if [ ! -f $disk ]; then
        sudo dd if=/dev/zero of=$disk bs=1M count=$IMG_SIZE
        sudo sgdisk --zap-all $disk
        sudo sgdisk -n 0:0:+500MiB -t 0:0700 -c 0:system-boot $disk
        sudo sgdisk -n 0:0:+7500MiB -t 0:a007 -c 0:writable $disk
        sudo sgdisk -p $disk
        sudo losetup /dev/$map_dev $disk
        sudo kpartx -av /dev/$map_dev
        sync
        sudo mkfs.vfat -F 32 /dev/mapper/${map_dev}p1
        sudo mkfs.ext4 /dev/mapper/${map_dev}p2
	sudo fatlabel /dev/mapper/${map_dev}p1 system-boot
	sudo e2label /dev/mapper/${map_dev}p2 writable
        sudo kpartx -dv /dev/$map_dev
        sudo losetup -d /dev/$map_dev
    fi
    map_dev=`sudo losetup -f | cut -d / -f 3`
    sudo losetup /dev/$map_dev $disk
    sudo kpartx -av /dev/$map_dev
    sync
    sudo mkdir -p $ROOTFS/
    sudo mount /dev/mapper/${map_dev}p2 $ROOTFS
    sudo mkdir -p $ROOTFS/boot/firmware
    sudo mount /dev/mapper/${map_dev}p1 $ROOTFS/boot/firmware
}

step_initial()
{
    step_custom_img_init

    if [ ! -z ${VER_DEBIAN} ]; then
        sudo rm -rf $ROOTFS > /dev/null 2>&1
	sudo qemu-debootstrap \
            --arch="${ARCH}" \
            --include="apt-transport-https,avahi-daemon,ca-certificates,curl,htop,locales,net-tools,openssh-server,usbutils" \
            --exclude="debfoster" \
            ${VER_CODE} \
            ${ROOTFS} \
            ${MIRROR_SERVER}
    fi

    if [ ! -z ${VER_OPENKYLIN} ]; then
        sudo rm -rf $ROOTFS > /dev/null 2>&1
	sudo ln -sf /usr/share/debootstrap/scripts/gutsy /usr/share/debootstrap/scripts/yangtze
        sudo qemu-debootstrap \
            --arch="${ARCH}" \
            --no-check-gpg --include="dosfstools,mtools,locales,fonts-noto-cjk,fonts-noto-mono,fonts-noto-cjk-extra,nano,network-manager" \
            ${VER_CODE} \
            ${ROOTFS} \
            ${MIRROR_SERVER}
    fi

    if [ ! -z ${VER_UBUNTU} ]; then
        if [ ! -f ${DOWNLOAD_TAR} ]; then
            wget http://cdimage.ubuntu.com/ubuntu-base/releases/${VER_UBUNTU}/release/${DOWNLOAD_TAR}
        fi

        check=`md5sum ${DOWNLOAD_TAR} |  awk '{print $1}'`
        if [ x$check != x"${VER_SUM}" ]; then
            echo "File check sum failed. Current file sum: [$check]"
            exit 0
        fi
    
        sudo rm -rf $ROOTFS > /dev/null 2>&1
        sudo mkdir -p $ROOTFS
        sudo tar xpf ${DOWNLOAD_TAR} -C $ROOTFS
    fi

    sudo cp /etc/resolv.conf $ROOTFS/etc/resolv.conf
}

step_custom_modify()
{
    step_custom_img_init
    sudo cp /etc/resolv.conf $ROOTFS/etc/resolv.conf
    sudo cp -a $QEMU_BIN $ROOTFS/usr/bin
    sudo mount -t proc proc $ROOTFS/proc
    sudo mount -t sysfs sysfs $ROOTFS/sys
    sudo mount --bind /dev $ROOTFS/dev
    sudo mount --bind /dev/pts $ROOTFS/dev/pts
    HOME=/root sudo chroot $ROOTFS /bin/bash --login -i
}



case "$OPS" in
  rebuild)
    step_initial
    step_auto_install
    step_exit
    ;;
  update)
    step_custom_modify
    step_exit
    ;;
  umount)
    step_exit
    ;;
  *)
    echo "Usage: $0 {rebuild|update}" >&2
    ;;
esac

exit 0