#!/bin/sh

[ $# != 1 ] && { 
    echo "usage: mdkinst_stage2_tool <stage2 dir>" ; 
    echo "  example: misc/mdkinst_stage2_tool install/stage2"
    exit
}

STAGE2_DIR="$1"
LIVE_DIR="$STAGE2_DIR/live"
CLP="$STAGE2_DIR/mdkinst.clp"

if [ -d $LIVE_DIR ]; then
    echo "Creating $CLP from $LIVE_DIR"
    rm -f $STAGE2_DIR/.room
    mkisofs -quiet -D -R $LIVE_DIR | create_compressed_fs - 65536 $CLP 200 2>/dev/null
    echo foo > $STAGE2_DIR/.room
    if [ -s $STAGE2_DIR/.room ]; then
	rm -rf $LIVE_DIR $STAGE2_DIR/.room
    else
	echo "not enough space"
	rm -f $CLP
	exit 1
    fi
else
    echo "Creating $LIVE_DIR from $CLP"

    TMPDIR=${TMPDIR=/tmp}
    MNTPOINT=$TMPDIR/stage2_img

    if [ $EUID != "0" ]; then
	SUDO="sudo"
	PATH="/sbin:/usr/sbin:$PATH"
    fi

    $SUDO umount $MNTPOINT 2>/dev/null
    mkdir -p $MNTPOINT
    extract_compressed_fs $CLP > $CLP.iso 2>/dev/null
    mkdir $LIVE_DIR || { echo "not enough space"; exit 1; }
    $SUDO mount -o loop $CLP.iso $MNTPOINT || { echo "can not loopback mount $CLP"; exit 1; }
    cp -a $MNTPOINT/* $LIVE_DIR/ || { rm -rf $LIVE_DIR; exit 1; }
    $SUDO umount $MNTPOINT
    rm -f $CLP.iso $CLP
fi