fbsplash-extras/fbsplash-chvt

   1 #!/bin/bash
   2
   3 #  fbsplash-chvt                                                             #
   4
   5 #  Helper for Changing Virtual Consoles                                      #
   6 #                                                                            #
   7 #  Get X to change back to the splash VT on exit                             #
   8 #  or chvt from silent splash VT to console to avoid blackscreen             #
   9 #                                                                            #
  10 #  Can determine changing direction from configuration and runlevel          #
  11 #  when used with SysV-Init.                                                 #
  12 #                                                                            #
  13 #  Author:                Kurt J. Bosch    <kjb-temp-2009 at alpenjodel.de>  #
  14 #                                                                            #
  15 #  Distributed under the terms of the GNU General Public License (GPL)       #
  16
  17 # Make sure /proc/cmdline is parsed
  18 unset "${!SPLASH_@}"
  19
  20 . /sbin/splash-functions.sh
  21
  22 # Add miscsplashutils fgconsole path
  23 [[ $spl_bindir ]] && PATH+=":$spl_bindir"
  24
  25 # Defaults, Configuration
  26 SPLASH_XCHVT_WAIT=5 # seconds (undocumented setting)
  27 SPLASH_XLEVELS=( 5 )
  28 . /etc/conf.d/splash-extras
  29
  30 case $SPLASH_MODE_REQ
  31 in  silent ) splash_vt=$SPLASH_TTY
  32 ;; verbose ) splash_vt=1
  33 ;;       * ) exit 0
  34 esac
  35
  36 chvt_wait=0
  37 case $1 in -w | --wait )
  38         chvt_wait=$SPLASH_XCHVT_WAIT
  39         shift
  40 esac
  41
  42 if [[ $1 ]]; then
  43         :
  44 elif [[ -z $RUNLEVEL ]]; then
  45         echo "$0: Error: RUNLEVEL not set in environment. Unable to determine action." >&2
  46         exit 1
  47 elif [[ " "${SPLASH_XLEVELS[*]}" " = *" "$RUNLEVEL" "* ]]; then
  48         set -- splash
  49 else
  50         set -- 1
  51 fi
  52
  53 fgc=$( fgconsole ) || exit 1
  54
  55 if [[ $1 = "splash" ]]; then
  56         [[ $fgc = "$splash_vt" ]] && exit 0
  57         echo "Changing to Splash VT (for starting X)"
  58         chvt "$splash_vt"
  59 elif [[ $1 =~ ^[0-9]+$ ]]; then
  60         [[ $fgc = 1 ]] && exit 0
  61         if [[ $fgc = "$splash_vt" ]]; then
  62                 :
  63         elif (( chvt_wait > 0 )); then
  64                 echo -n "Waiting for Splash VT to be activated (by terminated X)"
  65                 t=$(( chvt_wait * 10 ))
  66                 until [[ $( fgconsole ) = "$splash_vt" ]]; do
  67                         (( -- t >= 0 )) && sleep .1 && continue
  68                         echo " - Timeout!"
  69                         exit 1
  70                 done
  71                 echo
  72         # If not on splash VT (after waiting until X changes), do nothing
  73         else
  74                 exit 0
  75         fi
  76         echo "Changing from Splash VT to VT#: $1"
  77         chvt "$1"
  78 else
  79         echo "Usage: ${0##*/} splash" >&2
  80         echo "       ${0##*/} [-w|--wait] [<vt-number>]" >&2
  81         exit 1
  82 fi
  83
  84 # EOF #