#! /bin/sh
### BEGIN INIT INFO
# Provides:          kvm
# Required-Start:    
# Required-Stop:     
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: KVM init script
# Description:       This script loads the kernel modules needed by kvm
### END INIT INFO

. /lib/lsb/init-functions

# Figure out which module we need.
if grep -q ^flags.*\\\<vmx\\\> /proc/cpuinfo
then
	module=kvm_intel
elif grep -q ^flags.*\\\<svm\\\> /proc/cpuinfo
then
	module=kvm_amd
else
	module=
fi

case "$1" in
  start)
	if [ -z "$module" ]
	then
		log_failure_msg "Your system does not have the CPU extensions required to use KVM. Not doing anything."
		exit 0
	fi
	if modprobe "$module" 
	then
		log_success_msg "Loading kvm module $module"
	else
		log_failure_msg "Module $module failed to load"
		exit 1
	fi
	;;
  stop)
	if [ -z "$module" ]
	then
		exit 0
	fi
	if lsmod | grep -q "$module"
	then
		if rmmod "$module" 
		then
			log_success_msg "Succesfully unloaded kvm module $module"
			rmmod kvm
		else
			log_failure_msg "Failed to remove $module"
			exit 1
		fi
	else
		log_failure_msg "Module $module not loaded"
	fi
	;;
  force-reload|restart)
	$0 stop
	$0 start
	;;
  *)
	echo "Usage: $0 {start|stop|restart|force-reload}" >&2
	exit 3
	;;
esac

: