#!/bin/bash

# cd in this command's directory
cd $(dirname $0)

#Getting the env. as passed by the test framework - mostly MACADDR and NODE_ISO
CONFIG=qemu.conf
if [ ! -e ${CONFIG} ];then
    echo "File for node_iso version not found"
    exit 1
fi
. $CONFIG

#default Value
#always use the 64 bit version of qemu, as this will work on both 32 & 64 bit host kernels
QEMU=qemu
HDA=hda_5.img
RAM=1024

SCRIPT=qemu-ifup
TAP="tap,script=$SCRIPT"

#Creating new HDA if needed only
#using qcow2 disk image format which is essential to support VM snapshots
if [ -f $HDA ] ; then
    echo "Using $HDA"
else
    echo "Creating hard disk for Qemu install under $HDA"
    img=$(qemu-img create -f qcow2 $HDA 5G)
    if [ -z "$img" ];then
	echo "Can't Create disk image..."
	exit 1
    fi
fi

echo "New $HDA is created..."

rm -f qemu.pid

#Command for running the Qemu Emulator
ARGS="-boot d  -net nic,macaddr=${MACADDR} -net $TAP, -cdrom ${NODE_ISO} -hda ${HDA} -m ${RAM} -nographic  -pidfile qemu.pid"
echo $$ > shell.pid
echo "Running $QEMU $ARGS < /dev/null"
exec $QEMU $ARGS < /dev/null