lenovo-x220-linuxacpi/etc/acpi/actions/powerbtn.sh

   1 #!/bin/sh
   2 # /etc/acpi/powerbtn.sh
   3 # Taken from Debian's 2.0.4-1 diff file.  This version handles KDE4.
   4 # Power Button event handler.
   5 # Checks to see if gnome or KDE are already handling the power button.
   6 # If not, initiates a plain shutdown.
   7
   8 # getXuser gets the X user belonging to the display in $displaynum.
   9 # If you want the foreground X user, use getXconsole!
  10 # Input:
  11 #   displaynum - X display number
  12 # Output:
  13 #   XUSER - the name of the user
  14 #   XAUTHORITY - full pathname of the user's .Xauthority file
  15 getXuser() {
  16         user=`pinky -fw | awk '{ if ($2 == ":'$displaynum'" || $(NF) == ":'$displaynum'" ) { print $1; exit; } }'`
  17         if [ x"$user" = x"" ]; then
  18                 startx=`pgrep -n startx`
  19                 if [ x"$startx" != x"" ]; then
  20                         user=`ps -o user --no-headers $startx`
  21                 fi
  22         fi
  23         if [ x"$user" != x"" ]; then
  24                 userhome=`getent passwd $user | cut -d: -f6`
  25                 export XAUTHORITY=$userhome/.Xauthority
  26         else
  27                 export XAUTHORITY=""
  28         fi
  29         export XUSER=$user
  30 }
  31
  32 # Gets the X display number for the active virtual terminal.
  33 # Output:
  34 #   DISPLAY - the X display number
  35 #   See getXuser()'s output.
  36 getXconsole() {
  37         console=`fgconsole`;
  38         displaynum=`ps t tty$console | sed -n -re 's,.*/X .*:([0-9]+).*,\1,p'`
  39         if [ x"$displaynum" != x"" ]; then
  40                 export DISPLAY=":$displaynum"
  41                 getXuser
  42         fi
  43 }
  44
  45 # Skip if we are just in the middle of resuming.
  46 test -f /var/lock/acpisleep && exit 0
  47
  48 # If the current X console user is running a power management daemon that
  49 # handles suspend/resume requests, let them handle policy.
  50
  51 getXconsole
  52
  53 # A list of power management system process names.
  54 PMS="gnome-power-manager kpowersave xfce4-power-manager"
  55 PMS="$PMS guidance-power-manager.py dalston-power-applet"
  56
  57 # If one of those is running or any of several others,
  58 if pidof x $PMS > /dev/null ||
  59         ( test "$XUSER" != "" && pidof dcopserver > /dev/null && test -x /usr/bin/dcop && /usr/bin/dcop --user $XUSER kded kded loadedModules | grep -q klaptopdaemon) ||
  60         ( test "$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
  61         # Get out as the power manager that is running will take care of things.
  62     exit
  63 fi
  64
  65 # No power managment system appears to be running.  Just initiate a plain
  66 # shutdown.
  67 /sbin/shutdown -h now "Power button pressed"
  68