#!/bin/sh

# Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
# based on vserver by Jacques Gelinas
#  
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#  
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#  
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# This is a script to control a virtual server

: ${UTIL_VSERVER_VARS:=/usr/lib/util-vserver/util-vserver-vars}
test -e "$UTIL_VSERVER_VARS" || {
    echo $"Can not find util-vserver installation (the file '$UTIL_VSERVER_VARS' would be expected); aborting..." >&2
    exit 1
}
. "$UTIL_VSERVER_VARS"

USR_SBIN=$__SBINDIR
USR_LIB_VSERVER=$__PKGLIBDIR
DEFAULTPATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/X11R6/bin

vserver_mknod(){
	mknod $1 $2 $3 $4
	chmod $5 $1
}

mountproc()
{
	mkdir -p $1/proc $1/dev/pts
	if [ ! -d $1/proc/1 ] ; then
		mount -t proc none $1/proc
		mount -t devpts -o gid=5,mode=0620 none $1/dev/pts
	fi
}
umountproc()
{
	umount $1/proc 2>/dev/null
	umount $1/dev/pts 2>/dev/null
}

# Check that the vservers parent directory has permission 000
# This is the key to avoid chroot escape
testperm()
{
	return
	PERM=`$_SHOWPERM $__DEFAULT_VSERVERDIR/$1/..`
	if [ "$PERM" != 000 ] ; then
		echo
		echo "**********************************************************"
		echo $__DEFAULT_VSERVERDIR/$1/.. has insecure permissions.
		echo A vserver administrator may be able to visit the root server.
		echo To fix this, do
		echo "	" chmod 000 $__DEFAULT_VSERVERDIR/$1/..
		echo do it anytime you want, even if vservers are running.
		echo "**********************************************************"
		echo
	fi
}
# Set the IP alias needed by a vserver
ifconfig_iproot()
{
	if [ "$NODEV" = "" -a "$IPROOT" != "" -a "$IPROOT" != "0.0.0.0" -a "$IPROOT" != "ALL" ] ;then
		# A vserver may have more than one IP
		# The first alias is dev:vserver
		# and the other are dev:vserver1,2,3 and so on
		# An IP may hold the device. The following is valid
		#	IPROOT="1.2.4.5 eth1:1.2.3.5"
		#	IPROOTDEV=eth0
		# The first IP 1.2.3.4 will go on eth0 and the other on eth1
		# VLAN devices are also supported (eth0.231 for vlan 231)
		SUFFIX=
		for oneip in $IPROOT
		do
			IPDEV=$IPROOTDEV
			MASK=$IPROOTMASK
			BCAST=$IPROOTBCAST
			# Split the device and IP if available
			case $oneip in
			*:*)
				eval `echo $oneip | tr : ' ' | (read dev ip; echo oneip=$ip; echo IPDEV=$dev)`
				;;
			esac
			# Split the IP and the netmask if available
			case $oneip in
			*/*)
				eval `echo $oneip | tr / ' ' | (read ip msk; echo oneip=$ip; echo MASK=$msk)`
				eval `$_IFSPEC "" "$oneip" "$MASK" "$BCAST"`
				;;
			esac
			if [ "$IPDEV" != "" ] ; then
				case $IPDEV in
				*.*)
					if [ ! -f /proc/net/vlan/$IPDEV ] ; then
						/sbin/vconfig add `echo $IPDEV | tr . ' '`
						# Put a dummy IP
						/sbin/ifconfig $IPDEV 127.0.0.1
					fi
					;;
				esac
				# Compute the default netmask, if missing
				eval `$_IFSPEC $IPDEV "$oneip" "$MASK" "$BCAST"`
				IPROOTMASK=$NETMASK
				IPROOTBCAST=$BCAST
				#echo /sbin/ifconfig $IPDEV:$1$SUFFIX $oneip netmask $IPROOTMASK broadcast $IPROOTBCAST
				/sbin/ifconfig $IPDEV:$1$SUFFIX $oneip netmask $IPROOTMASK broadcast $IPROOTBCAST
			fi
			if [ "$SUFFIX" = "" ] ; then
				SUFFIX=1
			else
				SUFFIX=`expr $SUFFIX + 1`
			fi
		done
	fi
	if [ "$IPROOTBCAST" = "" ] ; then
		IPROOTBCAST=255.255.255.255
	fi
}
ifconfig_iproot_off()
{
	if [ "$NODEV" = "" -a "$IPROOT" != "" -a "$IPROOT" != "0.0.0.0" -a "$IPROOT" != "ALL"  -a "$IPROOTDEV" != "" ] ;then
		SUFFIX=
		for oneip in $IPROOT
		do
			IPDEV=$IPROOTDEV
			# Split the device and IP if available
			case $oneip in
			*:*)
				eval `echo $oneip | tr : ' ' | (read dev ip; echo IPDEV=$dev)`
				;;
			esac
			/sbin/ifconfig $IPDEV:$1$SUFFIX down 2>/dev/null
			if [ "$SUFFIX" = "" ] ; then
				SUFFIX=1
			else
				SUFFIX=`expr $SUFFIX + 1`
			fi
		done
	fi
}
# Split an IPROOT definition, trash the devices and
# compose a set of --ip option for chbind
setipopt(){
	RET=
	IPS="$*"
	if [ "$IPS" = "" ] ; then
		IPS=0.0.0.0
	fi
	if [ "$1" = "ALL" ] ; then
		IPS=`$_LISTDEVIP`
	fi
	for oneip in $IPS
	do
		# Split the device and IP if available
		case $oneip in
		*:*)
			eval `echo $oneip | tr : ' ' | (read dev ip; echo oneip=$ip)`
			;;
		esac
		#case $oneip in
		#*/*)
		#	eval `echo $oneip | tr / ' ' | (read ip msk; echo oneip=$ip)`
		#	;;
		#esac
		echo --ip $oneip
	done
}

# Extract the initial runlevel from the vserver inittab
get_initdefault()
{
	INITDEFAULT=`grep :initdefault $__DEFAULT_VSERVERDIR/$1/etc/inittab | sed 's/:/ /g' | ( read a level b; echo $level)`
}

# Read the vserver configuration file, reusing the PROFILE value
# found in /var/run/vservers
readlastconf()
{
	if [ -f $__PKGSTATEDIR/$1.ctx ] ; then
		. $__PKGSTATEDIR/$1.ctx
		if [ "$S_PROFILE" != "" ] ; then
			export PROFILE=$S_PROFILE
		fi
	fi
	export PROFILE
	. $__CONFDIR/$1.conf
}
usage()
{
	echo vserver [ options ] server-name command ...
	echo
	echo server-name is a directory in $__DEFAULT_VSERVERDIR
	echo
	echo The commands are:
	echo " build   : Create a virtual server by copying the packages"
	echo "           of the root server"
	echo " enter   : Enter in the virtual server context and starts a shell"
	echo "           Same as \"vserver name exec /bin/sh\""
	echo " exec    : Exec a command in the virtual server context"
	echo " suexec  : Exec a command in the virtual server context uid"
	echo " service : Control a service inside a vserver"
	echo "           vserver name service service-name start/stop/restart/status"
	echo " start   : Starts the various services in the vserver, runlevel 3"
	echo " stop    : Ends all services and kills the remaining processes"
	echo " running : Tells if a virtual server is running"
	echo "           It returns proper exit code, so you can use it as a test"
	echo " status  : Tells some information about a vserver"
	echo " chkconfig : It turns a server on or off in a vserver"
	echo
	echo "--nodev  : Do not configure the IP aliases of the vserver"
	echo "           Useful to enter a vserver without enabling its network"
	echo "           and avoiding conflicts with another copy of this vserver"
	echo "           running elsewhere"
	echo "--silent : No informative messages about vserver context and IP numbers"
	echo "           Useful when you want to redirect the output"
}

calculateCaps()
{
    local f
    for f in "$@"; do
	case $f in
	    !CAP_SYS_CHROOT)
		CHROOTOPT=--nochroot
		;;
	    *)
		CAPS="$CAPS --cap $f"
		;;
	esac
    done
}

SILENT=
NODEV=
while true
do
	if [ "$1" = "--silent" ] ; then
		SILENT=--silent
		shift
	elif [ "$1" = "--nodev" ] ; then
		NODEV=--nodev
		shift
	else
		break
	fi
done
# Setup the default ulimit for a vserver
setdefulimit(){
	# File handle are limited to half of the current system limit
	# Virtual memory is limited to the ram size
	NFILE=`cat /proc/sys/fs/file-max`
	NFILE=`expr $NFILE / 2`
	VMEM=`cat /proc/meminfo  | grep MemTotal | (read a b c; echo $b)`
	# Disabled for now, we need a different to set the security
	# context limit than fiddling with ulimit
	#ulimit -H -n $NFILE -v $VMEM
}
if [ $# -lt 2 ] ; then
	usage
elif [ "$2" = "build" ] ; then
	# Either the directory does not exist or is empty
	NBSUB=`ls $__DEFAULT_VSERVERDIR/$1 2>/dev/null | grep -v lost+found | wc -l` 
	NBSUB=`expr $NBSUB`
	if [ "$NBSUB" != 0 ] ; then
		echo Virtual server $__DEFAULT_VSERVERDIR/$1 already exist
	else
		if [ ! -d $__DEFAULT_VSERVERDIR ] ; then
			mkdir $__DEFAULT_VSERVERDIR || exit 1
			chmod 000 $__DEFAULT_VSERVERDIR
			echo Directory $__DEFAULT_VSERVERDIR was created with permissions 000
		fi
		mkdir -p $__DEFAULT_VSERVERDIR/$1 || exit 1
		chmod 755 $__DEFAULT_VSERVERDIR/$1
		if test "$UTIL_VSERVER_AVOID_COPY"; then
		    mkdir -p $__DEFAULT_VSERVERDIR/$1/{etc/rc.d/init.d,sbin,var/run,var/log}
		else
		    cp -ax /sbin /bin /etc /usr /var /lib $__DEFAULT_VSERVERDIR/$1/. || exit 1
		fi
		cd $__DEFAULT_VSERVERDIR/$1 || exit 1
		rm -fr lib/modules/*
		rm -f var/spool/mail/*
		rm -f `find var/run -type f`
		rm -f `find var/log -type f`
		touch var/log/wtmp
		rm -f var/lock/subsys/*
		rm -f etc/cron.d/kmod
		mkdir proc tmp home root boot
		test -f /root/.bashrc && cp -a /root/.bashrc root/.
		test -f /root/.bash_profile && cp -a /root/.bash_profile root/.
		chmod 1777 tmp
		chmod 750 root
		# Create a minimal dev so the virtual server can't grab
		# more privileges
		mkdir dev dev/pts
		vserver_mknod dev/null c 1 3 666
		vserver_mknod dev/zero c 1 5 666
		vserver_mknod dev/full c 1 7 666
		vserver_mknod dev/random c 1 8 644
		vserver_mknod dev/urandom c 1 9 644
		vserver_mknod dev/tty c 5 0 666
		vserver_mknod dev/ptmx c 5 2 666
		touch dev/hdv1
		# Turn off some service useless on a vserver
		#		vserver_turnoff apmd network autofs dhcpd gpm ipchains iptables \
		#			irda isdn keytable kudzu linuxconf-setup netfs nfs nfslock \
		#			pcmcia portmap pppoe random rawdevices rhnsd rstatd ruserd \
		#			rwalld rwhod sendmail smb snmpd v_httpd h_xinetd v_sshd vservers \
		#			xfs ypbind xinetd
		(
			cd etc/init.d 2>/dev/null || cd etc/rc.d/init.d
			for serv in *
			do
				case $serv in
				*.bak|*~|functions|killall|halt|single)
					;;
				*)
					#$USR_LIB_VSERVER/capchroot $__DEFAULT_VSERVERDIR/$1 /sbin/chkconfig --level 2345 $serv off
					$0 --silent $1 chkconfig --level 2345 $serv off
					;;
				esac
			done
		)
		rm -f etc/rc.d/rc6.d/S*reboot
		# Create a dummy /etc/fstab and /etc/mtab to please
		# df and linuxconf. We use hdv1, which does not exist
		# to remind the admin that it is not the real drive
		echo /dev/hdv1 / ext2 defaults 1 1 >etc/fstab
		echo /dev/hdv1 / ext2 rw 0 0 >etc/mtab
		# Install the vreboot utility
		cp -a "$_VREBOOT" sbin/.
		ln -sf vreboot sbin/vhalt

		echo Directory $__DEFAULT_VSERVERDIR/$1 has been populated
		if [ ! -d $__CONFDIR ] ; then
			mkdir $__CONFDIR
			chmod 600 $__CONFDIR
			echo Directory $__CONFDIR has been created
		fi
		if [ ! -f $__CONFDIR/$1.conf ] ; then
			CONF=$__CONFDIR/$1.conf
			cat >$CONF <<-EOF
if [ "$PROFILE" = "" ] ; then
	PROFILE=prod
fi
# Select the IP number assigned to the virtual server
# This IP must be one IP of the server, either an interface
# or an IP alias
# A vserver may have more than one IP. Separate them with spaces.
# do not forget double quotes.
# Some examples:
# IPROOT="1.2.3.4 2.3.4.5"
# IPROOT="eth0:1.2.3.4 eth1:2.3.4.5"
# If the device is not specified, IPROOTDEV is used
case \$PROFILE in
prod)
	IPROOT=1.2.3.4
	# The netmask and broadcast are computed by default from IPROOTDEV
	#IPROOTMASK=
	#IPROOTBCAST=
	# You can define on which device the IP alias will be done
	# The IP alias will be set when the server is started and unset
	# when the server is stopped
	#IPROOTDEV=eth0
	# You can set a different host name for the vserver
	# If empty, the host name of the main server is used
	S_HOSTNAME=
	;;
backup)
	IPROOT=1.2.3.4
	#IPROOTMASK=
	#IPROOTBCAST=
	#IPROOTDEV=eth0
	S_HOSTNAME=
	;;
esac
# Uncomment the onboot line if you want to enable this
# virtual server at boot time
#ONBOOT=yes
# You can set a different NIS domain for the vserver
# If empty, the current on is kept
# Set it to "none" to have no NIS domain set
S_DOMAINNAME=
# You can set the priority level (nice) of all process in the vserver
# Even root won't be able to raise it
S_NICE=
# You can set various flags for the new security context
# lock: Prevent the vserver from setting new security context
# sched: Merge scheduler priority of all processes in the vserver
#        so that it acts a like a single one.
# nproc: Limit the number of processes in the vserver according to ulimit
#        (instead of a per user limit, this becomes a per vserver limit)
# private: No other process can join this security context. Even root
# Do not forget the quotes around the flags
S_FLAGS="lock nproc"
# You can set various ulimit flags and they will be inherited by the
# vserver. You enter here various command line argument of ulimit
# ULIMIT="-HS -u 200"
# The example above, combined with the nproc S_FLAGS will limit the
# vserver to a maximum of 200 processes
ULIMIT="-HS -u 1000"
# You can set various capabilities. By default, the vserver are run
# with a limited set, so you can let root run in a vserver and not
# worry about it. He can't take over the machine. In some cases
# you can to give a little more capabilities (such as CAP_NET_RAW)
# S_CAPS="CAP_NET_RAW"
S_CAPS=""
# Select an unused context (this is optional)
# The default is to allocate a free context on the fly
# In general you don't need to force a context
#S_CONTEXT=
			EOF
			echo $CONF has been created. Look at it\!
		fi
	fi
elif [ ! -f $__CONFDIR/$1.conf ] ; then
	echo No configuration for this vserver: $__CONFDIR/$1.conf
	exit 1
elif [ ! -d $__DEFAULT_VSERVERDIR/$1/. ] ; then
	echo No directory for this vserver: $__DEFAULT_VSERVERDIR/$1
	exit 1
elif [ "$2" = "start" ] ; then
	echo Starting the virtual server $1
	testperm $1
	if ! $0 $1 running
	then
		test -x $__CONFDIR/$1.sh && $__CONFDIR/$1.sh pre-start $1
		IPROOT=
		IPROOTMASK=
		IPROOTBCAST=
		IPROOTDEV=
		S_NICE=
		S_FLAGS=
		. $__CONFDIR/$1.conf
		export PROFILE
		ifconfig_iproot $1
		cd $__DEFAULT_VSERVERDIR/$1 || exit 1

		if [ "$PROFILE" != "" ] ; then
			echo export PROFILE=$PROFILE >etc/PROFILE
		fi

		rm -f `find var/run -type f`
		touch var/run/utmp
		chgrp ${UTMP_GROUP:-utmp} var/run/utmp
		chmod 0664 var/run/utmp
		rm -f  var/lock/subsys/*
		mountproc $__DEFAULT_VSERVERDIR/$1
		CTXOPT=
		HOSTOPT=
		DOMAINOPT=
		NICECMD=
		FLAGS=
		CAPS=
		get_initdefault $1
		STARTCMD="/etc/rc.d/rc $INITDEFAULT"
		if [ -x $__DEFAULT_VSERVERDIR/$1/etc/init.d/rc ] ; then
			STARTCMD="/etc/init.d/rc $INITDEFAULT"
		elif [ -x $__DEFAULT_VSERVERDIR/$1/usr/bin/emerge ] ; then
			STARTCMD="/sbin/rc default"
		elif [ -x $__DEFAULT_VSERVERDIR/$1/etc/rc.d/rc.M ] ; then
		        STARTCMD="/etc/rc.d/rc.M"			
 		fi

		DISCONNECT=
		FAKEINIT=
		for f in $S_FLAGS dummy
		do
			case $f in
			dummy)
				;;

                        minit)
				FAKEINIT=true
                                FLAGS="$FLAGS --flag fakeinit"
                                STARTCMD=/sbin/minit-start
                                DISCONNECT=--disconnect
				;;

			fakeinit)
				FAKEINIT=true
				FLAGS="$FLAGS --flag $f"
				STARTCMD=/sbin/init
				DISCONNECT=--disconnect
				;;
			*)
				FLAGS="$FLAGS --flag $f"
				;;
			esac
		done
		if [ "$FAKEINIT" = "" ] ; then
			$USR_LIB_VSERVER/fakerunlevel $INITDEFAULT var/run/utmp
		fi

		calculateCaps $S_CAPS

		if [ "$S_CONTEXT" != "" ] ; then
			CTXOPT="--ctx $S_CONTEXT"
		fi
		if [ "$S_HOSTNAME" != "" ] ; then
			HOSTOPT="--hostname $S_HOSTNAME"
			export HOSTNAME=$S_HOSTNAME
		fi
		if [ "$S_DOMAINNAME" != "" ] ; then
			DOMAINOPT="--domainname $S_DOMAINNAME"
		fi
		if [ "$S_NICE" != "" ] ; then
			NICECMD="nice -$S_NICE"
		fi
		mkdir -p $__PKGSTATEDIR
		chmod 700 $__PKGSTATEDIR
		setdefulimit
		if [ "$ULIMIT" != "" ] ; then
			ulimit $ULIMIT
		fi
		#echo FLAGS=$FLAGS
		#echo CAPS=$CAPS
		# We switch to /vservers/$1 now, because after the
		# security context switch /vservers directory becomes a dead zone.
		cd $__DEFAULT_VSERVERDIR/$1
		IPOPT=`setipopt $IPROOT`
		export PATH=$DEFAULTPATH
		$NICECMD $_CHBIND $SILENT $IPOPT --bcast $IPROOTBCAST \
			$_CHCONTEXT_COMPAT $SILENT $DISCONNECT $CAPS $FLAGS $CTXOPT $HOSTOPT $DOMAINOPT --secure \
			$_SAVE_S_CONTEXT $__PKGSTATEDIR/$1.ctx \
			$_CAPCHROOT $CHROOTOPT . $STARTCMD
		sleep 2
		test ! -x $__CONFDIR/$1.sh || $__CONFDIR/$1.sh post-start $1
	fi
elif [ "$2" = "running" ] ; then
	if [ ! -f $__PKGSTATEDIR/$1.ctx ] ; then
		echo Server $1 is not running
		exit 1
	else
		. $__PKGSTATEDIR/$1.ctx
		NB=$($USR_SBIN/vps ax | awk '{print $2}' | grep \^$S_CONTEXT\$ | wc -l)
		#NB=`$_CHCONTEXT_COMPAT --silent --ctx $S_CONTEXT ps ax | wc -l`
		#NB=`eval expr $NB + 0`
		if [ "$NB" -gt 0 ] ; then
			echo Server $1 is running
			exit 0
		else
			echo Server $1 is not running
			exit 1
		fi
	fi
elif [ "$2" = "status" ] ; then
	if $0 $1 running
	then
		. $__PKGSTATEDIR/$1.ctx
		NB=$($USR_SBIN/vps ax | awk '{print $2}' | grep \^$S_CONTEXT\$ | wc -l)
		echo $NB processes running
		echo Vserver uptime: `$USR_LIB_VSERVER/filetime $__PKGSTATEDIR/$1.ctx`
	fi
elif [ "$2" = "stop" ] ; then
	echo Stopping the virtual server $1
	IPROOT=
	IPROOTMASK=
	IPROOTBCAST=
	IPROOTDEV=
	CAPS=
	IS_MINIT=
	readlastconf $1
	if $0 $1 running
	then
		test -x $__CONFDIR/$1.sh && $__CONFDIR/$1.sh pre-stop $1
		ifconfig_iproot $1
		cd $__DEFAULT_VSERVERDIR/$1
		mountproc $__DEFAULT_VSERVERDIR/$1
		# The fakeinit flag tell us how to turn off the server
		get_initdefault $1
		export PREVLEVEL=$INITDEFAULT
		STOPCMD="/etc/rc.d/rc 6"
		if [ -x $__DEFAULT_VSERVERDIR/$1/etc/init.d/rc ] ; then
			STOPCMD="/etc/init.d/rc 6"
		elif [ -x $__DEFAULT_VSERVERDIR/$1/usr/bin/emerge ] ; then
			STOPCMD="/sbin/rc shutdown"
		elif [ -x $__DEFAULT_VSERVERDIR/$1/etc/rc.d/rc.6 ] ; then
		        STOPCMD="/etc/rc.d/rc.6"
 		fi

		for f in $S_FLAGS dummy
		do
			case $f in
                        minit)
				IS_MINIT=1
				FLAGS="$FLAGS --flag fakeinit"
                                STOPCMD="/sbin/minit-stop"
                                ;;

			fakeinit)
				FLAGS="$FLAGS --flag $f"
				STOPCMD="/sbin/init 6"
				;;
			*)
				;;
			esac
		done

		calculateCaps $S_CAPS

		cd $__DEFAULT_VSERVERDIR/$1
		IPOPT=`setipopt $IPROOT`
		export PATH=$DEFAULTPATH
		$_CHBIND $SILENT $IPOPT --bcast $IPROOTBCAST \
			$_CHCONTEXT_COMPAT $SILENT $CAPS --secure --ctx $S_CONTEXT \
			$_CAPCHROOT . $STOPCMD

		if test "$IS_MINIT"; then
		    echo "Waiting for minit finish-signal"
		    dd if=var/run/minit-stop of=/dev/zero bs=1 count=1 &>/dev/null
		    sleep 1
		else
		    echo sleeping 5 seconds
		    sleep 5
		fi

		echo Killing all processes
		$_CHBIND --silent $IPOPT --bcast $IPROOTBCAST \
			$_CHCONTEXT_COMPAT $CAPS --secure --silent --ctx $S_CONTEXT \
			$_VSERVERKILLALL
	fi
	# We umount anyway, because "enter" establish the mount
	# but when you exit, the server is considered not running
	umountproc $__DEFAULT_VSERVERDIR/$1
	cd /
	test -x $__CONFDIR/$1.sh && $__CONFDIR/$1.sh post-stop $1
	ifconfig_iproot_off $1
elif [ "$2" = "restart" ] ; then
	if $0 $1 running
	then
		$0 $1 stop
		$0 $1 start
	fi
elif [ "$2" = "suexec" ] ; then
	if [ -z "$3" ] ; then
		echo "Missing user!" >&2
		echo "vserver vserver-name suexec user command [ args ... ]" >&2
		exit 1
	elif [ -z "$4" ] ; then
		echo "Missing command and arguments!" >&2
		echo "vserver vserver-name suexec user command [ args ... ]" >&2
		exit 1
	else
		IPROOT=
		IPROOTMASK=
		IPROOTBCAST=
		IPROOTDEV=
		readlastconf $1
		. $__CONFDIR/$1.conf
		cd $__DEFAULT_VSERVERDIR/$1
		ifconfig_iproot $1
		mountproc $__DEFAULT_VSERVERDIR/$1
		PS1="[\u@vserver:$1 \W]"
		export PS1
		VSERVER=$1
		USERID=$3
		shift; shift; shift
		CAPS=
		for f in $S_CAPS dummy
		do
			case $f in
			dummy)
				;;
			!CAP_SYS_CHROOT)
				CHROOTOPT=--nochroot
				;;
			*)
				CAPS="$CAPS --cap $f"
				;;
			esac
		done
		FLAGS=
		for f in $S_FLAGS dummy
		do
			case $f in
                        minit)
				FLAGS="$FLAGS --flag fakeinit"
                                ;;

			dummy)
				;;
			*)
				FLAGS="$FLAGS --flag $f"
				;;
			esac
		done
		setdefulimit
		if [ "$ULIMIT" != "" ] ; then
			ulimit $ULIMIT
		fi
		if $0 $VSERVER running >/dev/null
		then
			. $__PKGSTATEDIR/$VSERVER.ctx
			cd $__DEFAULT_VSERVERDIR/$VSERVER
			IPOPT=`setipopt $IPROOT`
			export PATH=$DEFAULTPATH
			exec $_CHBIND $SILENT $IPOPT --bcast $IPROOTBCAST \
				$_CHCONTEXT_COMPAT $SILENT $FLAGS $CAPS --secure --ctx $S_CONTEXT \
				$_CAPCHROOT --suid $USERID . "$@"
		else
			test -x $__CONFDIR/$1.sh && $__CONFDIR/$1.sh pre-start $1
			CTXOPT=
			HOSTOPT=
			DOMAINOPT=
			if [ "$S_CONTEXT" != "" ] ; then
				CTXOPT="--ctx $S_CONTEXT"
			fi
			if [ "$S_HOSTNAME" != "" ] ; then
				HOSTOPT="--hostname $S_HOSTNAME"
				export HOSTNAME=$S_HOSTNAME
			fi
			if [ "$S_DOMAINNAME" != "" ] ; then
				DOMAINOPT="--domainname $S_DOMAINNAME"
			fi
			mkdir -p $__PKGSTATEDIR
			cd $__DEFAULT_VSERVERDIR/$VSERVER
			IPOPT=`setipopt $IPROOT`
			export PATH=$DEFAULTPATH
			exec $_CHBIND $SILENT $IPOPT --bcast $IPROOTBCAST \
				$_CHCONTEXT_COMPAT $SILENT $FLAGS $CAPS --secure $CTXOPT $HOSTOPT $DOMAINOPT \
				$_SAVE_S_CONTEXT $__PKGSTATEDIR/$VSERVER.ctx \
				$_CAPCHROOT --suid $USERID $CHROOTOPT . "$@"
		fi
	fi
elif [ "$2" = "exec" ] ; then
	VSERV=$1
	shift; shift
	exec $0 $NODEV $SILENT $VSERV suexec root "$@"
elif [ "$2" = "enter" ] ; then
	testperm $1
	exec $0 $NODEV $SILENT $1 exec /bin/bash -login
elif [ "$2" = "service" ] ; then
	VSERVER=$1
	shift
	shift
	exec $0 $NODEV $SILENT $VSERVER exec /sbin/service "$@"
elif [ "$2" = "chkconfig" ] ; then
	VSERVER=$1
	shift
	shift
	if [ "$1" = "--level" ] ; then
		shift
		LEVELS=$1
		shift
	fi
	if [ $# != 2 -a ! -x $__DEFAULT_VSERVERDIR/$VSERVER/sbin/chkconfig ] ; then
		echo Invalid argument, expected vserver name chkconfig [ --level nnn ] service on\|off
	elif [ -x $__DEFAULT_VSERVERDIR/$VSERVER/sbin/chkconfig ] ; then
		exec $0 --silent $VSERVER exec /sbin/chkconfig "$@"
	elif [ -x $__DEFAULT_VSERVERDIR/$VSERVER/usr/sbin/update-rc.d ] ; then
		if [ "$2" = "on" -o "$2" = "start" ] ; then
			$0 --silent $VSERVER exec /usr/sbin/update-rc.d -f $1 remove >/dev/null
			exec $0 --silent $VSERVER exec /usr/sbin/update-rc.d $1 start 80 2 3 4 5 . stop 20 0 1 6 . >/dev/null
		elif [ "$2" = "off" -o "$2" = "stop" ] ; then
			$0 --silent $VSERVER exec /usr/sbin/update-rc.d -f $1 remove >/dev/null
			exec $0 --silent $VSERVER exec /usr/sbin/update-rc.d $1 stop 20 0 1 2 3 4 5 6 . >/dev/null
		else
			echo vserver chkconfig: Expecting on or off
		fi
	else
		echo chkconfig functionality is not available on this
		echo vserver distribution.
		echo Looked for /sbin/chkconfig and /usr/sbin/update-rc.d
	fi
else
	echo Command unknown $2
	echo
	usage
fi