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|
#! /bin/sh
#
# genpowerfail This script is run when the UPS tells the system
# the power has gone. Tell everybody, ans start the
# shutdown based on the failure type.
# This script is also being run when the power comes
# up again (if it does in time!)
#
# Version: /etc/genpowerfail 1.0.1
#
# Author: Tom Webster <webster@kaiwan.com>
#
# Set the path.
PATH=/sbin:/etc:/bin:/usr/bin
# Set location of upsstatus file
statpath="/etc/upsstatus"
# Set location of file containing PID of running shutdowns
spidpath="/etc/shutdownpid"
# See what happened.
case "$1" in
start)
# Called with a powerfail event, check to see if a shutdown is running, and stop it if it is.
if [ -f $spidpath ]
then
# Shutdown is running, kill it to process the new event
shutdown -c "Halting running shutdown to process power event...."
fi
# Get power problem and act on it
if [ -r $statpath ]
then
stats=`head -1 $statpath`
case "$stats" in
FAIL) # Power is down
shutdown -r +2 "THE POWER IS DOWN! SHUTTING DOWN SYSTEM! PLEASE LOG OFF NOW!" < /dev/console &
;;
SCRAM) # Battery is low
shutdown -r now "THE POWER IS DOWN! BATTERY POWER IS LOW! EMERGENCY SHUTDOWN!" < /dev/console &
;;
CABLE) # Possible bad cable
shutdown -r +1 "POSSIBLE BAD CABLE! SHUTTING DOWN SYSTEM! PLEASE LOG OFF NOW!" < /dev/console &
;;
*) # Unknown message, assume power is down
shutdown -r +2 "THE POWER IS DOWN! SHUTTING DOWN SYSTEM! PLEASE LOG OFF NOW!" < /dev/console &
;;
esac
else
# genowerfail called, and upsstatus dosen't exist.
# Assume user is using powerd, and shutdown.
shutdown -r +2 "THE POWER IS DOWN! SHUTTING DOWN SYSTEM! PLEASE LOG OFF NOW!" < /dev/console &
fi
;;
stop)
# Ok, power is good again. Say so on the console.
#echo "THE POWER IS BACK, GOING MULTI USER"
shutdown -c "THE POWER IS BACK"
;;
*)
echo "Usage: /etc/genpowerfail {start|stop}"
exit 1
;;
esac
exit 0
|
