[gdm] gdm-x-session: pass display location to dbus-daemon

[Ray Strode <halfline src gnome org>]

commit 9bac8121debeefe3ec25a8fb0a005e0cd4c7a394
Author: Mantas Mikulėnas <grawity gmail com>
Date:   Sun Feb 22 22:19:37 2015 +0200

    gdm-x-session: pass display location to dbus-daemon
    
    The DISPLAY and XAUTHORITY environment variables need to be
    set in the bus daemon environment so that programs activated via
    the session bus can access the display.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744946

 daemon/gdm-x-session.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-x-session.c b/daemon/gdm-x-session.c
index c3c638e..dfd6016 100644
--- a/daemon/gdm-x-session.c
+++ b/daemon/gdm-x-session.c
@@ -385,6 +385,10 @@ spawn_bus (State        *state,
 
         arguments = g_ptr_array_new ();
         launcher = g_subprocess_launcher_new (G_SUBPROCESS_FLAGS_NONE);
+
+        g_subprocess_launcher_setenv (launcher, "DISPLAY", state->display_name, TRUE);
+        g_subprocess_launcher_setenv (launcher, "XAUTHORITY", state->auth_file, TRUE);
+
         g_subprocess_launcher_take_fd (launcher, pipe_fds[1], BUS_ADDRESS_FILENO);
 
         bus_address_fd_string = g_strdup_printf ("%d", BUS_ADDRESS_FILENO);