#!/bin/bash

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

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

# the launcher, depending on local/target archs
archs="$(uname-i)+$(TARGET_ARCH)"
case $archs in
    i386+i386)		QEMU= qemu;;
    i386+x86_64)	QEMU= qemu-system-x86_64;;
    x86_64+i386)	QEMU= qemu;;
    x86_64+x86_64)	QEMU= qemu-system-x86_64;;
esac

QEMU=qemu
HDA=hard_drive.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 (10G) for Qemu install under $HDA"
    img=$(qemu-img create -f qcow2 $HDA 10G)
    if [ -z "$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 "Running $QEMU $ARGS < /dev/null"
exec $QEMU $ARGS < /dev/null