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#!/bin/bash
#
# Script to extract a poky qemux86 rootfs and prepare it for 
# use as a chroot
#

set -e

case $# in
    2)
    TGZ=$1
    TARGET=$2
    ;;
    *)
    echo "Invalid arguments, please run as:"
    echo "$ $0 <qemux86-rootfs.tar.gz> <target-directory>"
    exit 1
esac

echo "Extracting $TGZ into $TARGET"

test -d "$TARGET" && { echo "$TARGET already exists, please remove and retry or specify a dirferent directory." ; exit 1 ; }
mkdir --parents "$TARGET"

tar -C "$TARGET" --exclude ./dev/\* -jxp -f "$TGZ"
echo "HAVE_TOUCHSCREEN=0" >> "$TARGET/etc/formfactor/machconfig"
echo "DISPLAY_WIDTH_PIXELS=640" >> "$TARGET/etc/formfactor/machconfig"
echo "DISPLAY_HEIGHT_PIXELS=480" >> "$TARGET/etc/formfactor/machconfig"
cp /etc/passwd "$TARGET/etc/passwd"
cp /etc/resolv.conf "$TARGET/etc/resolv.conf"
touch "$TARGET/.pokychroot"