Add systemd unit for tdm-trinity on Ubuntu

Signed-off-by: Slávek Banko <slavek.banko@axis.cz>
(cherry picked from commit e1a5231c98)

ubuntu/maverick/tdebase/debian/tdm-trinity.postinst

@@ -44,6 +44,25 @@ if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE.dpkg-tmp" ]; then
   rm "$DEFAULT_DISPLAY_MANAGER_FILE.dpkg-tmp"
 fi
 
+# set default-display-manager systemd service link according to our config
+DEFAULT_SERVICE=/etc/systemd/system/display-manager.service
+if [ "$1" = configure ] && [ -d /etc/systemd/system/ ]; then
+  if [ -e "$DEFAULT_DISPLAY_MANAGER_FILE" ]; then
+    SERVICE=/lib/systemd/system/$(basename $(cat "$DEFAULT_DISPLAY_MANAGER_FILE")).service
+    SERVICE=`echo "$SERVICE" | sed "s/tdm\./tdm-trinity./"`
+    if [ -h "$DEFAULT_SERVICE" ] && [ $(readlink "$DEFAULT_SERVICE") = /dev/null ]; then
+      echo "Display manager service is masked" >&2
+    elif [ -e "$SERVICE" ]; then
+      ln -sf "$SERVICE" "$DEFAULT_SERVICE"
+    else
+      echo "WARNING: $SERVICE is the selected default display manager but does not exist" >&2
+      rm -f "$DEFAULT_SERVICE"
+    fi
+  else
+    rm -f "$DEFAULT_SERVICE"
+  fi
+fi
+
 # restarting the daemon may cause output to stdout
 db_stop
 
@@ -122,6 +141,20 @@ case "$1" in
 
 esac
 
+# Upstart is not active?
+UPSTART_ACTIVE=`dbus-send --system --print-reply --dest=com.ubuntu.Upstart /com/ubuntu/Upstart org.freedesktop.DBus.Properties.Get string:com.ubuntu.Upstart0_6 string:version 2>/dev/null || true`
+if [ -z "$UPSTART_ACTIVE" ]; then
+  echo "Upstart is not active - masking initctl" >&2
+  dpkg-divert --local --rename --add /sbin/initctl
+  ln -s /bin/true /sbin/initctl
+fi
+
 #DEBHELPER#
 
+# Upstart is not active?
+if [ -z "$UPSTART_ACTIVE" ]; then
+  rm /sbin/initctl
+  dpkg-divert --local --rename --remove /sbin/initctl
+fi
+
 exit 0

ubuntu/maverick/tdebase/debian/tdm-trinity.service

@@ -0,0 +1,12 @@
+[Unit]
+Description=Trinity Display Manager
+Documentation=man:tdm-trinity(1)
+Conflicts=getty@tty7.service plymouth-quit.service
+After=systemd-user-sessions.service getty@tty7.service plymouth-quit.service
+
+[Service]
+# temporary safety check until all DMs are converted to correct
+# display-manager.service symlink handling
+ExecStartPre=/bin/sh -c '[ "$(basename $(cat /etc/X11/default-display-manager 2>/dev/null))" = "tdm" ]'
+ExecStart=/opt/trinity/bin/tdm
+Restart=always