debian/lightdm.prerm

   1 #!/bin/bash
   2 # Debian lightdm package pre-removal script
   3 # based on xdm script
   4 # Copyright 2001 Branden Robinson.
   5 # Licensed under the GNU General Public License, version 2.  See the file
   6 # /usr/share/common-licenses/GPL or <http://www.gnu.org/copyleft/gpl.txt>.
   7 # Acknowlegements to Stephen Early, Mark Eichin, and Manoj Srivastava.
   8 # based on gdm pre-removal script
   9
  10 set -e
  11
  12 THIS_PACKAGE=lightdm
  13 DAEMON=/usr/sbin/lightdm
  14
  15 DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
  16
  17 if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then
  18   if [ -e /usr/share/debconf/confmodule ]; then
  19     . /usr/share/debconf/confmodule
  20     # disown this question
  21     db_unregister shared/default-x-display-manager
  22     # does the question still exist?
  23     if db_get shared/default-x-display-manager; then
  24       db_metaget shared/default-x-display-manager owners
  25       db_subst shared/default-x-display-manager choices "$RET"
  26       db_get shared/default-x-display-manager
  27       # are we removing the currently selected display manager?
  28       if [ "$THIS_PACKAGE" = "$RET" ]; then
  29         if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
  30           if db_get "$RET"/daemon_name; then
  31             if [ "$(cat $DEFAULT_DISPLAY_MANAGER_FILE)" = "$RET" ]; then
  32               rm "$DEFAULT_DISPLAY_MANAGER_FILE"
  33             fi
  34           else
  35             if [ "$(cat $DEFAULT_DISPLAY_MANAGER_FILE)" = "$DAEMON" ]; then
  36               rm "$DEFAULT_DISPLAY_MANAGER_FILE"
  37             fi
  38           fi
  39         fi
  40         # ask the user to choose a new default
  41         db_fset shared/default-x-display-manager seen false
  42         db_input critical shared/default-x-display-manager || true
  43         db_go
  44         # if the display manager file doesn't exist, write it with the path
  45         # to the new default display manager
  46         if [ ! -e $DEFAULT_DISPLAY_MANAGER_FILE ]; then
  47           db_get shared/default-x-display-manager
  48           db_get "$RET"/daemon_name
  49           echo "$RET" > "$DEFAULT_DISPLAY_MANAGER_FILE"
  50         fi
  51       fi
  52     fi
  53   fi
  54 fi
  55
  56 #DEBHELPER#
  57
  58 exit 0