etc-gentoo/acpi/actions/powerbtn.sh

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#!/bin/sh
# /etc/acpi/powerbtn.sh
# Taken from Debian's 2.0.4-1 diff file. This version handles KDE4.
# Power Button event handler.
# Checks to see if gnome or KDE are already handling the power button.
# If not, initiates a plain shutdown.
# getXuser gets the X user belonging to the display in $displaynum.
# If you want the foreground X user, use getXconsole!
# Input:
# displaynum - X display number
# Output:
# XUSER - the name of the user
# XAUTHORITY - full pathname of the user's .Xauthority file
getXuser() {
user=`pinky -fw | awk '{ if ($2 == ":'$displaynum'" || $(NF) == ":'$displaynum'" ) { print $1; exit; } }'`
if [ x"$user" = x"" ]; then
startx=`pgrep -n startx`
if [ x"$startx" != x"" ]; then
user=`ps -o user --no-headers $startx`
fi
fi
if [ x"$user" != x"" ]; then
userhome=`getent passwd $user | cut -d: -f6`
export XAUTHORITY=$userhome/.Xauthority
else
export XAUTHORITY=""
fi
export XUSER=$user
}
# Gets the X display number for the active virtual terminal.
# Output:
# DISPLAY - the X display number
# See getXuser()'s output.
getXconsole() {
console=`fgconsole`;
displaynum=`ps t tty$console | sed -n -re 's,.*/X .*:([0-9]+).*,\1,p'`
if [ x"$displaynum" != x"" ]; then
export DISPLAY=":$displaynum"
getXuser
fi
}
# Skip if we are just in the middle of resuming.
test -f /var/lock/acpisleep && exit 0
# If the current X console user is running a power management daemon that
# handles suspend/resume requests, let them handle policy.
getXconsole
# A list of power management system process names.
PMS="gnome-power-manager kpowersave xfce4-power-manager"
PMS="$PMS guidance-power-manager.py dalston-power-applet"
# If one of those is running or any of several others,
if pidof x $PMS > /dev/null ||
( test "$XUSER" != "" && pidof dcopserver > /dev/null && test -x /usr/bin/dcop && /usr/bin/dcop --user $XUSER kded kded loadedModules | grep -q klaptopdaemon) ||
( test "$XUSER" != "" && test -x /usr/bin/qdbus && test -r /proc/$(pidof kded4)/environ && su - $XUSER -c "eval $(echo -n 'export '; cat /proc/$(pidof kded4)/environ |tr '\0' '\n'|grep DBUS_SESSION_BUS_ADDRESS); qdbus org.kde.kded" | grep -q powerdevil) ; then
# Get out as the power manager that is running will take care of things.
exit
fi
# No power managment system appears to be running. Just initiate a plain
# shutdown.
/sbin/shutdown -h now "Power button pressed"