#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/x11-base/xfree/files/4.3.0/xdm.start,v 1.5 2004/07/15 01:03:31 agriffis Exp $

# This is here to serve as a note to myself, and future developers.
#
# Any Display manager (gdm,kdm,xdm) have the following problem:  if
# it is started before any getty, and no vt is specified, it will
# usually run on vt2.  When the getty on vt2 then starts, and the
# DM is already started, the getty will take control of the keyboard,
# leaving us with a "dead" keyboard.
#
# Resolution: add the following line to /etc/inittab
#
#  x:a:once:/etc/X11/startDM.sh
#
# and have /etc/X11/startDM.sh start the DM in daemon mode if
# a lock is present (with the info of what DM should be started),
# else just fall through.
#
# How this basically works, is the "a" runlevel is a additional
# runlevel that you can use to fork processes with init, but the
# runlevel never gets changed to this runlevel.  Along with the "a"
# runlevel, the "once" key word means that startDM.sh will only be
# run when we specify it to run, thus eliminating respawning
# startDM.sh when "xdm" is not added to the default runleve, as was
# done previously.
#
# This script then just calls "tellinit a", and init will run
# /etc/X11/startDM.sh after the current runlevel completes (this
# script should only be added to the actual runlevel the user is
# using).
#
# Martin Schlemmer
# aka Azarah
# 04 March 2002


# Start X Font Server before X
depend() {
	use xfs hotplug
}

setup_dm() {
	source /etc/profile.env
	export PATH="/bin:/sbin:/usr/bin:/usr/sbin:${ROOTPATH}"

	case "$(echo ${DISPLAYMANAGER} | awk '{ print toupper($1) }')" in
		KDM|KDE|KDE2|KDE3)
			EXE="$(which kdm)"
			;;
		ENTRANCE*)
			EXE="$(which entranced)"
			;;
		GDM|GNOME)
			EXE=/usr/bin/gdm
			;;
		WDM)
			EXE=/usr/bin/wdm
			;;		
		*)
			EXE=/usr/X11R6/bin/xdm
			;;
	esac

	test ! -x "${EXE}" && EXE=/usr/X11R6/bin/xdm

	SERVICE="${EXE##*/}"
}

start() {
	setup_dm
	
	ebegin "Setting up ${SERVICE}"
	#save the prefered DM
	save_options "service" "${EXE}"
	#tell init to run /etc/X11/startDM.sh after current
	#runlevel is finished (should *not* be in the "boot"
	#                      runlevel).
	/sbin/telinit a &>/dev/null
	eend 0
}

stop() {
	local retval=0
	local curvt="$(fgconsole)"
	local myexe="$(get_options "service")"
	local myservice="${myexe##*/}"
	
	ebegin "Stopping ${myservice}"
	rm -f ${svcdir}/options/xdm/service
	
	if [ "$(ps -A | grep -e "${myservice}")" ]
	then
		start-stop-daemon --stop --quiet \
			--exe ${myexe} &>/dev/null
		
		retval=$?
	else
		retval=1
	fi
	
	#switch back to original vt
	chvt "${curvt}" &>/dev/null
	eend ${retval} "Error stopping ${myservice}."
	
	return ${retval}
}


# vim:ts=4