File upsd-early-powerdown.init of Package nut

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File upsd-early-powerdown.init of Package nut

#! /bin/sh
#
# Sample script for early powerdown. Edit and copy to /etc/init.d/. See
# /usr/share/doc/packages/nut/README.SUSE for more.
#
# Copyright (c) 2006  SUSE / Novell Inc.
# All rights reserved.
#
# Author: Stanislav Brabec, 2006
# Please send feedback to http://www.suse.de/feedback/
#
# /etc/init.d/upsd-early-powerdown
#
#    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., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# System startup script for NUT UPS daemon
#
# LSB compatible service control script; see http://www.linuxbase.org/spec/
# 
### BEGIN INIT INFO
# Provides:          upsd-early-powerdown
# Required-Start:    
# Should-Start:      FIXME scripts which should not stop before powerdown
# Required-Stop:     
# Should-Stop:       FIXME scripts which should stop before powerdown
# Default-Start:     3 5
# Default-Stop:      0 1 2 6
# Short-Description: Early UPS powerdown
# Description:       Script for early, quick but incorrect power down
#	while going out of batteries. You need it only if you run slowly
#	stopping services and UPS battery power fails before stopping of
#	these services.
### END INIT INFO
#
# Note on runlevels:
# 0 - halt/poweroff 			6 - reboot
# 1 - single user			2 - multiuser without network exported
# 3 - multiuser w/ network (text mode)  5 - multiuser w/ network and X11 (xdm)
#

# Check for existence of needed config files
UPSMON_CONFIG=/etc/ups/upsmon.conf
test -r $UPSMON_CONFIG || { echo "$UPSMON_CONFIG not existing";
	if [ "$1" = "stop" ]; then exit 0; else exit 6; fi;
}
# If this file exists, power is failing.
POWERDOWNFLAG=$(sed -n 's/^POWERDOWNFLAG[[:space:]]*//p' </etc/ups/upsmon.conf)

# Shell functions sourced from /etc/rc.status:
#      rc_check         check and set local and overall rc status
#      rc_status        check and set local and overall rc status
#      rc_status -v     be verbose in local rc status and clear it afterwards
#      rc_status -v -r  ditto and clear both the local and overall rc status
#      rc_status -s     display "skipped" and exit with status 3
#      rc_status -u     display "unused" and exit with status 3
#      rc_failed        set local and overall rc status to failed
#      rc_failed <num>  set local and overall rc status to <num>
#      rc_reset         clear both the local and overall rc status
#      rc_exit          exit appropriate to overall rc status
#      rc_active        checks whether a service is activated by symlinks
. /etc/rc.status

# Reset status of this service
rc_reset

# Return values acc. to LSB for all commands but status:
# 0	  - success
# 1       - generic or unspecified error
# 2       - invalid or excess argument(s)
# 3       - unimplemented feature (e.g. "reload")
# 4       - user had insufficient privileges
# 5       - program is not installed
# 6       - program is not configured
# 7       - program is not running
# 8--199  - reserved (8--99 LSB, 100--149 distrib, 150--199 appl)
# 
# Note that starting an already running service, stopping
# or restarting a not-running service as well as the restart
# with force-reload (in case signaling is not supported) are
# considered a success.

case "$1" in
    start|probe)
	## Start silently. No action.
	;;
    stop)
	# If power is failing and shutdown is running, shutdown as fast as possible.
	if test "$RUNLEVEL" = "0" -a -n "$POWERDOWNFLAG " -a -f "$POWERDOWNFLAG" ; then
	    echo "Initiating early UPS power down..."
	    echo "Power is failing. Running fast shutdown."
	    echo "Sending all processes the TERM signal..."
	    killall5 -15
	    sleep 3
	    echo "Sending all processes the KILL signal..."
	    killall5 -9
	    echo "Remounting filesystems read-only."
	    mounts=/etc/fstab
	    test -r /proc/mounts && mounts=/proc/mounts
	    while read des fs rest; do
		mount -v -n -o remount,ro $fs
	    done < $mounts
	    /etc/init.d/upsd powerdown
	fi
	;;
    restart|try-restart|condrestart|force-reload|reload)
	# Unimplemented.
	rc_failed 3
	rc_status -v
	;;
    status)
	# Service status unknown.
	rc_failed 4
	rc_status -v
	;;
    *)
	echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe}"
	exit 1
	;;
esac
rc_exit

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