scripts/thinkpad_light.sh

   1 #!/bin/sh
   2 # thinkpad_light.sh -- ThinkLight script for vlock,
   3 #                      the VT locking program for linux
   4 #
   5 # This program is copyright (C) 2007 Frank Benkstein, and is free software.  It
   6 # comes without any warranty, to the extent permitted by applicable law.  You
   7 # can redistribute it and/or modify it under the terms of the Do What The Fuck
   8 # You Want To Public License, Version 2, as published by Sam Hocevar.  See
   9 # http://sam.zoy.org/wtfpl/COPYING for more details.
  10
  11 set -e
  12
  13 DEPENDS="all"
  14
  15 hooks() {
  16   while read hook_name ; do
  17     case "${hook_name}" in
  18       vlock_save)
  19         light_status=$(awk '/^status:/ {print $2}' /proc/acpi/ibm/light)
  20
  21         if [ "${light_status}" = "on" ] ; then
  22           echo off | sudo tee /proc/acpi/ibm/light >/dev/null
  23         fi
  24       ;;
  25       vlock_save_abort)
  26         if [ "${light_status}" = "on" ] ; then
  27           echo on | sudo tee /proc/acpi/ibm/light >/dev/null
  28         fi
  29       ;;
  30     esac
  31   done
  32 }
  33
  34 if [ $# -ne 1 ] ; then
  35   echo >&2 "Usage: $0 <command>"
  36   exit 1
  37 fi
  38
  39 case "$1" in
  40   hooks)
  41     hooks
  42   ;;
  43   preceeds)
  44     echo "${PRECEEDS}"
  45   ;;
  46   succeeds)
  47     echo "${SUCCEEDS}"
  48   ;;
  49   requires)
  50     echo "${REQUIRES}"
  51   ;;
  52   needs)
  53     echo "${NEEDS}"
  54   ;;
  55   depends)
  56     echo "${DEPENDS}"
  57   ;;
  58   conflicts)
  59     echo "${CONFLICTS}"
  60   ;;
  61   *)
  62     echo >&2 "$0: unknown command '$1'"
  63     exit 1
  64   ;;
  65 esac