#!/bin/sh
#
#  Startup script for the Hercules S/390 emulator
#  Copyright (C) 2001 Karsten Hopp <karsten@redhat.de>
#

HERCNET="192.168.200.0/24"

PATH=/bin:/usr/bin:/sbin:/usr/sbin
LANG=C
export PATH LANG
if [ `id -u` != 0 ]; then
   echo "This script requires root permissions"
   exit 1
fi

lsmod | grep -q ipchains && {
   echo "ipchains module loaded, cannot set up iptables masquerading"
   echo "exiting...."
   exit 1
}

[ -d /dev/net ] || mkdir -p /dev/net
[ -c /dev/net/tun ] || mknod /dev/net/tun c 10 200
modprobe tun			2>/dev/null
modprobe ip_tables		2>/dev/null
modprobe iptable_filter		2>/dev/null
modprobe ip_conntrack		2>/dev/null
modprobe ip_conntrack_ftp	2>/dev/null
modprobe ip_nat_ftp		2>/dev/null

# enable IP forwarding
echo 1 > /proc/sys/net/ipv4/ip_forward

iptables -t nat -A POSTROUTING -s ${HERCNET} -d 0.0.0.0/0 -j MASQUERADE
iptables -A FORWARD -i eth0 -o tun0 -m state --state ESTABLISHED,RELATED -j ACCEPT

cd /etc/hercules
hercules