#!/bin/bash
# $Header: /root/magellan-cvs/src/virtualbox/virtualbox-config.sh,v 1.5 2007-06-28 16:48:21 niro Exp $
# Configures virtualbox for Magellan-Linux

LIBDIR=/usr/lib
INSTDIR=${LIBDIR}/virtualbox
VBOXMODULE=vboxdrv.ko

COLRED="\033[1;6m\033[31m"
COLGREEN="\033[1;6m\033[32m"
COLDEFAULT="\033[0m"

if [[ ${NOCOLORS} = true ]]
then
	COLRED=""
	COLGREEN=""
	COLDEFAULT=""
fi

die() { echo -e "${COLRED}$@${COLDEFAULT}"; exit 1; }
mecho() { echo -e "${COLGREEN}$@${COLDEFAULT}"; }

# must be root
[[ $(id -u) != 0 ]] && die "You must be r00t!"

# check for given argvs
for i in $*
do
	case $1 in
		--kernel-version) shift; KERNEL_VERSION="$1" ;;
		--kernel-sources) shift; KERNEL_SOURCES="$1" ;;
	esac
	shift
done

# some sane defaults
[[ -z ${KERNEL_VERSION} ]] && KERNEL_VERSION="$(uname -r)"
[[ -z ${KERNEL_SOURCES} ]] && KERNEL_SOURCES="/lib/modules/${KERNEL_VERSION}/source"

mecho "Running $(basename $0) for kernelversion ${KERNEL_VERSION} ..."

if [ ! -f ${KERNEL_SOURCES}/include/linux/version.h ]
then
	die "No kernel sources for kernel ${KERNEL_VERSION} found! Aborting."
fi

if [[ -f /lib/modules/${KERNEL_VERSION}/misc/${VBOXMODULE} ]]
then
	mecho "Removing old module ..."
	rm -f /lib/modules/${KERNEL_VERSION}/misc/${VBOXMODULE}
fi

# compile the module
cd ${INSTDIR}/src
make -C ${KERNEL_SOURCES} SUBDIRS=$(pwd) SRCROOT=$(pwd) clean modules || die "mod-compile"

# install the module
install -d /lib/modules/${KERNEL_VERSION}/misc
install -m0644 ${VBOXMODULE} /lib/modules/${KERNEL_VERSION}/misc || die "mod-install"

# calc module dependencies
mecho "Calculating module dependencies ..."
depmod -ae ${KERNEL_VERSION}

# re-read udev rules to grant the right permissions
if [[ -x $(which udevcontrol) ]]
then
	mecho "Reloading udev configuration ..."
	$(which udevcontrol) reload_rules
fi

# load the module
if [[ xx$(uname -r) = x${KERNEL_VERSION} ]]
then
	mecho "Loading kernel-module ${VBOXMODULE} ..."
	modprobe $(basename ${VBOXMODULE} .ko)
else
	echo -e ${COLRED}
	echo "Your current running kernel does not match the the module target."
	echo "You must boot into your target kernel and load the module manually,"
	echo "before you can use virtual box."
 	echo -en ${COLDEFAULT}
fi

echo
mecho "Virtualbox is now configured for your system."
mecho "Do not forget to add you users to the 'virtualbox' group."
echo

exit 0