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#!/bin/sh |
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# |
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# AsynCluster: Node Display Manager (NDM): |
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# A simple X display manager for cluster nodes that also serve as |
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# access-restricted workstations. An NDM client runs on each node and |
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# communicates via Twisted's Perspective Broker to the Aysncluster server, |
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# which regulates when and how much each user can use his account on any of the |
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# workstations. The NDM server also dispatches cluster operations to the nodes |
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# via the NDM clients, unbeknownst to the workstation users. |
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# |
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# Copyright (C) 2006-2007 by Edwin A. Suominen, http://www.eepatents.com |
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# |
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# This program is free software; you can redistribute it and/or modify it under |
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# the terms of the GNU General Public License as published by the Free Software |
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# Foundation; either version 2 of the License, or (at your option) any later |
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# version. |
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# |
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# This program is distributed in the hope that it will be useful, but WITHOUT |
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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# FOR A PARTICULAR PURPOSE. See the file COPYING for more details. |
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# |
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# You should have received a copy of the GNU General Public License along with |
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# this program; if not, write to the Free Software Foundation, Inc., 51 |
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# Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA |
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|
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# Call with a single mode-determining argument |
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echo $@ |
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if [ "$1" = "DAEMON" ] |
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then |
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# The Xinit (re)starter loop is what runs as the daemon |
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export DISPLAY=:0 |
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XINIT_ARGS="$0 PYTHON -- /usr/bin/X -ac -br +kb :0" |
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while [ 1 ] |
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do |
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/usr/bin/xinit $XINIT_ARGS |
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done |
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|
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elif [ "$1" = "PYTHON" ] |
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then |
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# Starts the Python interpreter as Xinit's sole X client |
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exec python \ |
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-c "from asyncluster.ndm import node; node.Manager()" 2>/dev/null |
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|
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else |
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# Runs my Xinit (re)starter loop as a daemon |
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/sbin/start-stop-daemon \ |
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--background --quiet --start \ |
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--pidfile /var/run/ndm --make-pidfile \ |
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--startas "$0" DAEMON |
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|
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fi |
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