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  • Committer: Jeremy Bicha
  • Date: 2017-04-26 11:02:52 UTC
  • Revision ID: jbicha@ubuntu.com-20170426110252-of979orglkl75xgt
Tags: 3.24.1-0ubuntu1
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debian/gdm3.prerm
 
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#!/bin/bash
 
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# Debian gdm package pre-removal script
 
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# Copyright 2001 Branden Robinson.
 
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# Licensed under the GNU General Public License, version 2.  See the file
 
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# /usr/share/common-licenses/GPL or <http://www.gnu.org/copyleft/gpl.txt>.
 
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# Acknowlegements to Stephen Early, Mark Eichin, and Manoj Srivastava.
 
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set -e
 
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THIS_PACKAGE=gdm3
 
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DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
 
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if [ "$1" = "remove" -o "$1" = "deconfigure" ]; then
 
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  if [ -e /usr/share/debconf/confmodule ]; then
 
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    . /usr/share/debconf/confmodule
 
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    # disown this question
 
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    db_unregister shared/default-x-display-manager || true
 
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    # does the question still exist?
 
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    if db_get shared/default-x-display-manager; then
 
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      db_metaget shared/default-x-display-manager owners
 
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      db_subst shared/default-x-display-manager choices "$RET"
 
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      db_get shared/default-x-display-manager
 
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      # are we removing the currently selected display manager?
 
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      if [ "$THIS_PACKAGE" = "$RET" ]; then
 
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        if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
 
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          db_get "$RET"/daemon_name
 
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          if [ "$(cat $DEFAULT_DISPLAY_MANAGER_FILE)" = "$RET" ]; then
 
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            rm "$DEFAULT_DISPLAY_MANAGER_FILE"
 
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          fi
 
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        fi
 
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        # ask the user to choose a new default
 
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        db_fset shared/default-x-display-manager seen false
 
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        db_input critical shared/default-x-display-manager || true
 
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        db_go
 
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        # if the display manager file doesn't exist, write it with the path
 
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        # to the new default display manager
 
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        if [ ! -e $DEFAULT_DISPLAY_MANAGER_FILE ]; then
 
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          db_get shared/default-x-display-manager
 
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          echo "Please be sure to run \"dpkg-reconfigure $RET\"."
 
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          db_get "$RET"/daemon_name
 
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          echo "$RET" > "$DEFAULT_DISPLAY_MANAGER_FILE"
 
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        fi
 
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      fi
 
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    fi
 
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  fi
 
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  DEFAULT_SERVICE=/etc/systemd/system/display-manager.service
 
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  # set default-display-manager systemd service link according to our config
 
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  if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
 
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    SERVICE=/lib/systemd/system/$(basename $(cat "$DEFAULT_DISPLAY_MANAGER_FILE")).service
 
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    if [ -h "$DEFAULT_SERVICE" ] && [ $(readlink "$DEFAULT_SERVICE") = /dev/null ]; then
 
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      echo "Display manager service is masked" >&2
 
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    elif [ -e "$SERVICE" ]; then
 
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      ln -sf "$SERVICE" "$DEFAULT_SERVICE"
 
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    else
 
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      echo "WARNING: $SERVICE is the selected default display manager but does not exist" >&2
 
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      rm -f "$DEFAULT_SERVICE"
 
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    fi
 
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  else
 
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    rm -f "$DEFAULT_SERVICE"
 
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  fi
 
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fi
 
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#DEBHELPER#