x-gdm

#!/bin/bash

# Copyright (C) 2004-2007 Centro de Computacao Cientifica e Software Livre
# Departamento de Informatica - Universidade Federal do Parana - C3SL/UFPR
#
# 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
# of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
# USA.

# This is my attempted file for the mdm mode x-gdm

function display_manager_init () {
    # This function should stop running processes, remove logs, links, locks, or
    # anything your display manager might need.
    # Consider calling display_manager_stop here if you don't need anything
    # else.

    # No problem if it's already running...
    display_manager_stop

}

function display_manager_start_monoseat () {
    # This function is called when the computer has only 1 video card.
    # You should open only 1 xserver and that's it: normal usage, not multiseat
    # Do NOT configure devices or stuff like that
    # We assume $DISPLAY is already set here.

    $GDMDYNAMIC -a 0=XHandled
    $GDMDYNAMIC -r 0

    echo "Exiting (gdm will handle the X server for us)."
    return 0
}

function display_manager_start_underneath_xserver () {
    # In case we're using nested xservers (like Xephyr), we'll need to start an
    # xserver to run the nested servers on top of it
    # Don't put login screen on this server!
    # We assume $DISPLAY is already set here.

    $GDMDYNAMIC -a 0=XNotHandled
    $GDMDYNAMIC -r 0
    # XXX: find a better way to wait for X to start
    sleep 5

    return 0
}

function display_manager_start_seat () {
    # This is where we start the xserver that will have a login screen
    # In case of multiseat with Xephyr, this function starts the Xephyrs and
    # puts the login screens on them.
    # We assume $DISPLAY is already set here.
    # This function is called by mdm-start-seat, which gives you variables:
    #   - $KEYBOARD and $MOUSE, which point to evdev device nodes.
    #   - $SEAT_DISPLAY variable corresponds to the number that the user will
    #     have to press on the keyboard. Might be useful here.
    #   - $MY_SCREEN_SIZE for the size of screen (needed when running nested
    #     xservers)
    #   - $MY_XKB_LAYOUT and $MY_XKB_MODEL, for the keyboard associated with the
    #      seat
}

function display_manager_stop () {
    # This function should kill everything it has to kill, so that we REALLY
    # stop all the seats, kill all the Xephyrs, remove locks, links and stuff
    # like that.

    if [ -e "$GDM_SOCKET" ]; then
	SERVERS=($(gdmdynamic -l | tr ';' '\n'| cut -d':' -f2 | cut -d',' -f1))
	for i in ${SERVERS[@]}; do
	    $GDMDYNAMIC -d $i
	done
    fi
}