#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License, v2
# $Header: /home/cvsroot/gentoo-x86/x11-base/xfree/files/4.3.99.8/xdm.start,v 1.1 2003/07/11 22:54:09 spyderous 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}"

        local MY_XDM="$(echo ${DISPLAYMANAGER} | awk '{ print tolower($1) }')"
        case "${MY_XDM}" in
                kdm|kde|kde2|kde3)
                        EXE="$(which kdm)"
                        ;;
                entrance*)
                        EXE="$(which entranced)"
                        ;;
                gdm|gnome)
                        EXE=/usr/bin/gdm
                        ;;
                wdm)
                        EXE=/usr/bin/wdm
                        ;;
                *)
                        EXE=
                        for x in /usr/bin /usr/X11R6/bin
                        do
                                # Fix #65586, where MY_XDM is empty so EXE=somedir
                                [ -x "${x}/${MY_XDM}" -a -f "${x}/${MY_XDM}" ] \
                                        && EXE="${x}/${MY_XDM}"
                        done
                        [ -z "${EXE}" ] && EXE="/usr/X11R6/bin/xdm"
                        ;;
        esac

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

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

cmdline_opt() {
        if [[ "$#" -ne 1 ]]; then
                return 1
        fi

        for opt in $(</proc/cmdline); do
                case ${opt} in
                        ${1}) eval ${1}="true" ;;
                esac
        done
}

nox() {
        # Don't start X if we were passed 'nox' at boot (#83680)
        cmdline_opt nox

        if [[ "$?" -ne 0 ]]; then
                return 1
        fi

        if [[ -n "${nox}" ]]; then
                return 0
        else
                return 1
        fi
}

start() {
        setup_dm

        if nox; then
                einfo "Skipping ${EXE}, received 'nox'"
        else
                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
        fi

}

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 \
                        --exec ${myexe} &>/dev/null

                retval=$?
        fi

        #switch back to original vt
        chvt "${curvt}" &>/dev/null
        eend ${retval} "Error stopping ${myservice}."

        return ${retval}
}


# vim:ts=4