mount-image.sh

#!/bin/bash
# Copyright (C) 2021 <Jerry Vonau>
IMAGE=$1
echo "$1"

local_losetup(){
losetup -P -f $IMAGE
sleep 2
LOOP=`losetup | grep $IMAGE | awk -F " " '{ print $1 }'`
echo "loop is $LOOP"
sleep 2

mkdir -p /mnt/img
mount "$LOOP"p2 /mnt/img
if [ -d /mnt/img/boot/firmware ]; then
    mount "$LOOP"p1 /mnt/img/boot/firmware
else
    mount "$LOOP"p1 /mnt/img/boot
fi
mount --bind /dev /mnt/img/dev
mount --bind /sys /mnt/img/sys
mount --bind /proc /mnt/img/proc
mv /mnt/img/etc/resolv.conf /mnt/img/etc/resolv.conf.hold
touch /mnt/img/etc/resolv.conf
mount --bind /etc/resolv.conf /mnt/img/etc/resolv.conf
if [ $(uname -m) = "x86_64" ];then
    cp /usr/bin/qemu-arm-static /mnt/img/usr/bin/
fi
}

local_losetup
echo "ENTERING CHROOT"
chroot /mnt/img

sync
if [ -d /mnt/img/boot/firmware ]; then
    umount /mnt/img/boot/firmware
else
    umount /mnt/img/boot
fi
if [ -f /mnt/img/usr/bin/qemu-arm-static ]; then
    rm /mnt/img/bin/qemu-arm-static
fi
umount /mnt/img/etc/resolv.conf
rm /mnt/img/etc/resolv.conf
mv /mnt/img/etc/resolv.conf.hold /mnt/img/etc/resolv.conf
umount /mnt/img/proc
umount /mnt/img/sys
umount /mnt/img/dev/pts >> /dev/null
umount /mnt/img/dev
umount /mnt/img
losetup -d "$LOOP"
echo "$IMAGE unmounted"