#!/bin/sh
#
# sys-chroots	Starts and stops services in chroots
#
# chkconfig:	2345 99 01
# description:	This shell script starts and stops services in chroots

[ -r /etc/sysconfig/system ] && . /etc/sysconfig/system
[ -n "$2" ] && SYSTEM_CHROOTS="$2"

if [ -z "$SYSTEM_CHROOTS" ]; then
   	case "$1" in
	start|stop|restart)
		exit 0
		;;
	esac
fi

CMD="$1"

set $(runlevel)
runlevel=$2
previous=$1
export runlevel previous

[ -z "$runlevel" -o -z "$previous" -o "$runlevel" = "$previous" ] && exit 0

# Source function library.
. /etc/rc.d/init.d/functions

start() {
	if [ "$previous" = "N" ]; then
		runlevel=5
		previous=0
		export runlevel previous
	fi

	if [ -f /var/lock/subsys/sys-chroots ]; then
		msg_already_running "System chroots services"
		return
	fi

	msg_starting "System chroots services"; started

	for dir in $SYSTEM_CHROOTS; do
		[ ! -x "$dir/etc/rc.d/rc" ] && continue
		msg_starting "System chroots services for $dir"; started

		# Cleaning part, keep in sync with rc.sysinit

		chroot $dir sh -c '
		. /etc/rc.d/init.d/functions
		# Clear mtab
		> /etc/mtab
		[ -f /etc/cryptomtab ] && > /etc/cryptomtab

		# Remove stale backups
		rm -f /etc/mtab~ /etc/mtab~~ /etc/cryptomtab~ /etc/cryptomtab~~

		# Clean up /var
		# I would d use find, but /usr may not be mounted.
		for afile in /var/lock/* /var/run/*; do
			bafile=$(basename $afile)
			if [ -d "$afile" ]; then
				[ "$bafile" != "news" -a "$bafile" != "sudo" -a "$bafile" != "mon" ] && rm -rf $afile/*
			else
				[ "$bafile" != "hwprofile" ] && rm -f $afile 2> /dev/null
			fi
		done
		# Delete stale files
		rm -f /var/lib/rpm/__db* /var/spool/postoffice/.pid.* /tmp/.X*-lock \
			/tmp/.lock.* /tmp/.gdm_socket /tmp/.s.PGSQL.*
		rm -rf /tmp/.X*-unix /tmp/.ICE-unix /tmp/.font-unix /tmp/hsperfdata_* \
			/tmp/kde-* /tmp/ksocket-* /tmp/mc-* /tmp/mcop-* /tmp/orbit-* \
			/tmp/scrollkeeper-* /tmp/ssh-*

		# Clean up utmp/wtmp
		rm -f /var/run/utmpx
		> /var/run/utmp
		if [ -e /var/log/wtmpx ]; then
			if [ -e /var/log/wtmp ]; then
				rm -f /var/log/wtmpx
			else
				mv /var/log/wtmpx /var/log/wtmp
			fi
		fi
		touch /var/log/wtmp
		chown root:utmp /var/run/utmp /var/log/wtmp
		chmod 0664 /var/run/utmp /var/log/wtmp
		# Clean /tmp
		if is_yes "$CLEAN_TMP"; then
			rm -rf /tmp/* /tmp/.[a-zA-Z0-9]*
		fi
		'

		# Do our things

		# proc
		chroot $dir mount -o gid=17 -t proc proc /proc
		# usbfs, if available
		if [ -f /proc/bus/usb/devices ]; then
			chroot $dir mount -t usbfs usbfs /proc/bus/usb
		fi
		# sysfs is also needed before any other things (under kernel > 2.5)
		if grep -q sysfs /proc/filesystems ; then
			chroot $dir mount -o gid=17 -t sysfs sysfs /sys
		fi
		# selinux
		if grep -q selinuxfs /proc/filesystems ; then
			chroot $dir mount -o gid=17 -t selinuxfs selinuxfs /selinux
		fi
		chroot $dir mount -a
		# network
		[ -f /var/lock/subsys/network ] && touch $dir/var/lock/subsys/network
		# other
		chroot $dir /sbin/chkconfig single off
		rm -f $dir/etc/rc.d/rc*.d/K*single
		# run it
		chroot $dir /etc/rc.d/rc $runlevel chroot
	done

	touch /var/lock/subsys/sys-chroots
}

stop() {
	# Stop daemons.
	if [ "$previous" = "N" ]; then
		runlevel=0
		previous=5
		export runlevel previous
	fi

	if [ ! -f /var/lock/subsys/sys-chroots ]; then
		msg_not_running "System chroots services"
		return
	fi

	msg_stopping "System chroots services"; started
	for dir in $SYSTEM_CHROOTS; do
		[ ! -x "$dir/etc/rc.d/rc" ] && continue
		msg_stopping "System chroots services for $dir"; started
		rm -f $dir/var/lock/subsys/network
		chroot $dir /etc/rc.d/rc $runlevel chroot
		chroot $dir sh -c "grep -q selinuxfs /proc/filesystems && umount /selinux"
		chroot $dir sh -c "grep -q sysfs /proc/filesystems && umount /sys"
		chroot $dir umount -a
		chroot $dir umount /proc
	done
	rm -f /var/lock/subsys/sys-chroots >/dev/null 2>&1
}

RETVAL=0
# See how we were called.
case "$CMD" in
  start)
  	start
	;;
  stop)
	stop
	;;
  restart)
	stop
	start
	;;
  status)
	# TODO: running each service with status parameter
	for dir in $SYSTEM_CHROOTS; do
		echo "System chroots services for $dir"
		chroot $dir /sbin/chkconfig --list
	done
	exit $?
	;;
  *)
	msg_usage "$0 {start|stop|restart|status}"
	exit 3
esac

exit $RETVAL