install-system

#!/sbin/sh

TARPATH=$(realpath $2)
SYSIMG=$(realpath $3)


prepare_ubuntu_system()
{
	mount /data
	rm -f /data/system.img
	rm -rf /data/ubuntu
	for data in system android; do
		rm -rf /data/$data-data
	done
	dd if=/dev/zero of=/data/system.img seek=500K bs=4096 count=0 >/dev/null 2>&1
	mkfs.ext2 -F /data/system.img >/dev/null 2>&1
	mkdir -p /data/ubuntu
	mount -o loop /data/system.img /data/ubuntu/
}

cleanup()
{
	umount /data/ubuntu/ 2>/dev/null && rm -rf /data/ubuntu 2>/dev/null
	rm -r /data/zip
}

usage()
{
	echo "usage: $(basename $0) <method>\n
	methods: zip, pre"
	exit 1
}

TARBALL=$(basename $TARPATH)
THIS_DIR=$(dirname $0)

if [ $1 == "zip" ]; then
   mkdir /data/zip
   unzip $TARPATH -d /data/zip
   TARBALL = /data/zip/ubuntu.tar.gz
   SYSIMG = /data/zip/system.img
fi

if [ -z "$TARBALL" ]; then
    echo "need valid rootfs tarball path"
    usage
fi

echo -n "preparing system-image on device ... "
prepare_ubuntu_system
echo "[done]"

echo -n "unpacking rootfs tarball to system-image ... "
echo "$TARPATH"
zcat $TARPATH | tar xf - -C /data/ubuntu
cd /data/ubuntu
mkdir -p /data/ubuntu/android/firmware
mkdir -p /data/ubuntu/android/persist
mkdir -p /data/ubuntu/userdata
[ -e /data/ubuntu/SWAP.swap ] && mv /data/ubuntu/SWAP.swap /data/SWAP.img
for link in cache data factory firmware persist system; do
	cd /data/ubuntu && ln -s /android/$link $link
done
cd /data/ubuntu/lib && ln -s /system/lib/modules modules
cd /data/ubuntu && ln -s /android/system/vendor vendor
[ -e /data/ubuntu/etc/mtab ] && rm /data/ubuntu/etc/mtab
cd /data/ubuntu/etc && ln -s /proc/mounts mtab

echo "[done]"

echo -n "adding android system image to installation ... "
cd "$(dirname "$0")"
ANDROID_DIR="/data/ubuntu/var/lib/lxc/android/"
cp $SYSIMG $ANDROID_DIR
echo "[done]"

echo -n "enabling Mir ... "
touch /data/ubuntu/home/phablet/.display-mir
echo "[done]"

echo -n "cleaning up on device ... "
cleanup
echo "[done]"