#! /bin/sh
# Sun VirtualBox
# Linux kernel module init script

#
# Copyright (C) 2006-2009 Sun Microsystems, Inc.
#
# This file is part of VirtualBox Open Source Edition (OSE), as
# available from http://www.virtualbox.org. This file is free software;
# you can redistribute it and/or modify it under the terms of the GNU
# General Public License (GPL) as published by the Free Software
# Foundation, in version 2 as it comes in the "COPYING" file of the
# VirtualBox OSE distribution. VirtualBox OSE is distributed in the
# hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
#

# chkconfig: 35 30 70
# description: VirtualBox Linux kernel module
#
### BEGIN INIT INFO
# Provides:       vboxdrv virtualbox
# Required-Start: $remote_fs $network
# Required-Stop:  $remote_fs
# Default-Start:  2 3 4 5
# Default-Stop:   0 1 6
# Short-Description: VirtualBox Linux kernel module
### END INIT INFO

source /lib/lsb/init-functions

test -d /usr/share/doc/virtualbox -a -x /usr/bin/VBoxHeadless || exit 0

# Include virtualbox defaults if available
test -r /etc/default/virtualbox && source /etc/default/virtualbox

# set list of all active users if asked to do so
if test $SHUTDOWN_USERS = "all" {
	setglobal SHUTDOWN_USERS = ''""
	for i in [/tmp/.vbox-*-ipc] {
		setglobal SHUTDOWN_USERS = ""$SHUTDOWN_USERS $[echo $i|cut -d'-' -f2]""
	}
}

if test $LOAD_VBOXDRV_MODULE != 1 {
	log_success_msg "virtualbox disabled; edit /etc/default/virtualbox"
	exit 0
}

proc running
{
    lsmod | grep -q "$1[^_-]"
}

proc start
{
	log_begin_msg "Loading VirtualBox kernel modules..."
	
	if ! running vboxdrv {
		if ! modprobe vboxdrv > /dev/null !2 > !1 {
			if ! find /lib/modules/$[uname -r] -name "vboxdrv\.*" !2 >/dev/null|grep -q vboxdrv {
				log_failure_msg "No suitable module for running kernel found"
			} else {
				log_failure_msg "modprobe vboxdrv failed. Please use 'dmesg' to find out why"
			}
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxdrv"
		}
	}
	
	if ! running vboxnetflt {
		if ! modprobe vboxnetflt > /dev/null !2 > !1 {
			if ! find /lib/modules/$[uname -r] -name "vboxnetflt\.*" !2 >/dev/null|grep -q vboxnetflt {
				log_failure_msg "No suitable vboxnetflt module for running kernel found"
			} else {
				log_failure_msg "modprobe vboxnetflt failed. Please use 'dmesg' to find out why"
			}
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxnetflt"
		}
	}
	
	if ! running vboxnetadp {
		if ! modprobe vboxnetadp > /dev/null !2 > !1 {
			if ! find /lib/modules/$[uname -r] -name "vboxnetadp\.*" !2 >/dev/null|grep -q vboxnetadp {
				log_failure_msg "No suitable vboxnetadp module for running kernel found"
			} else {
				log_failure_msg "modprobe vboxnetadp failed. Please use 'dmesg' to find out why"
			}
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxnetadp"
		}
	}
	
	if ! running vboxpci {
		if ! modprobe vboxpci > /dev/null !2 > !1 {
			if ! find /lib/modules/$[uname -r] -name "vboxpci\.*" !2 >/dev/null|grep -q vboxpci {
				log_failure_msg "No suitable vboxpci module for running kernel found"
			} else {
				log_failure_msg "modprobe vboxpci failed. Please use 'dmesg' to find out why"
			}
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxpci"
		}
	}
	
	log_end_msg 0
}

proc stop
{
	log_begin_msg "Unloading VirtualBox kernel modules..."
	
	if running vboxnetadp {
		if ! rmmod vboxnetadp !2 >/dev/null {
			log_failure_msg "Cannot unload module vboxnetadp"
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxnetadp"
		}
	}
	
	if running vboxnetflt {
		if ! rmmod vboxnetflt !2 >/dev/null {
			log_failure_msg "Cannot unload module vboxnetflt"
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxnetflt"
		}
	}
	
	if running vboxpci {
		if ! rmmod vboxpci !2 >/dev/null {
			log_failure_msg "Cannot unload module vboxpci"
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxpci"
		}
	}
	
	if running vboxdrv {
		if ! rmmod vboxdrv !2 >/dev/null {
			log_failure_msg "Cannot unload module vboxdrv"
			log_end_msg 1
			return 1
		} else {
			log_progress_msg "vboxdrv"
		}
	}
	
	log_end_msg 0
}

# enter the following variables in /etc/default/virtualbox:
#   SHUTDOWN_USERS="foo bar"  
#     check for running VMs of user foo and user bar
#   SHUTDOWN=poweroff
#   SHUTDOWN=acpibutton
#   SHUTDOWN=savestate
#     select one of these shutdown methods for running VMs
proc stop_vms
{
	if ! pidof VBoxSVC > /dev/null {
		return 0
	}
	
	setglobal wait = '0'
	
	for i in [$SHUTDOWN_USERS] {
		if test -d /tmp/.vbox-$i-ipc {
			export VBOX_IPC_SOCKETID="$i"
			setglobal VMS = $[VBoxManage --nologo list runningvms !2 >/dev/null]
			if test $Status -eq 0 -a -n $VMS {
				setglobal VMS = $[echo $VMS | sed -e 's/^".*".*{\(.*\)}/\1/]
				if test $SHUTDOWN = "poweroff" {
					log_action_msg "Powering off remaining VMs from user $i"
					for v in [$VMS] {
						VBoxManage --nologo controlvm $v poweroff
						setglobal wait = '10'
					}
				} elif test $SHUTDOWN = "acpibutton" {
					log_action_msg "Sending ACPI power button event to remaining VMs from user $i"
					for v in [$VMS] {
						VBoxManage --nologo controlvm $v acpipowerbutton
						setglobal wait = '30'
					}
				} elif test $SHUTDOWN = "savestate" {
					log_action_msg "Saving state of remaining VMs from user $i"
					for v in [$VMS] {
						VBoxManage --nologo controlvm $v savestate
						setglobal wait = '30'
					}
				}
			}
		}
	}
	
	# wait for some seconds when doing ACPI shutdown
	if test $wait -ne 0 {
		log_action_begin_msg "Waiting for $wait seconds for VM shutdown"
		sleep $wait
		log_action_end_msg 0
	}
	return 0
}

proc dmnstatus
{
	if running vboxdrv && running vboxnetflt && running vboxnetadp && running vboxpci {
		echo "VirtualBox kernel modules are loaded."
		
		for i in [$SHUTDOWN_USERS] {
			if test -d /tmp/.vbox-$i-ipc {
				export VBOX_IPC_SOCKETID="$i"
				setglobal VMS = $[VBoxManage --nologo list runningvms !2 >/dev/null]
				if test $Status -eq 0 -a -n $VMS {
					setglobal VMS = $[echo $VMS | sed -e 's/^".*".*{\(.*\)}/\1/]
					echo "The following VMs are currently running:"
					for v in [$VMS] {
						echo "  $v"
					}
				}
			}
		}
		return 0
	} else {
		echo "VirtualBox kernel module is not loaded."
		return 3
	}
}

match $1 {
with start
	start
	
with stop
	stop_vms && stop
	
with stop_vms
	stop_vms
	
with restart|force-reload
	stop_vms && stop && start
	
with status
	dmnstatus
	
with *
	echo "Usage: $0 {start|stop|stop_vms|restart|force-reload|status}"
	exit 1
}