|
 |
e0b6b0 |
From 2843a951ef826afd01fa3c7340780b1929db38c7 Mon Sep 17 00:00:00 2001
|
|
|
c90517 |
From: Hans de Goede <hdegoede@redhat.com>
|
|
|
c90517 |
Date: Tue, 4 Sep 2018 08:12:34 +0200
|
|
|
e0b6b0 |
Subject: [PATCH 35/51] local-display-factory: Remove initial VT is in use
|
|
|
c90517 |
check
|
|
|
c90517 |
|
|
|
c90517 |
The initial VT is in use check in on_vt_changed() is racy, when switching
|
|
|
c90517 |
to VT1 from an active session, on_vt_changed() may run before logind has
|
|
|
c90517 |
processed the VT change and then sd_seat_get_active() will return the
|
|
|
c90517 |
active session which we are switching away from. This results in the greeter
|
|
|
c90517 |
not being started on VT1.
|
|
|
c90517 |
|
|
|
c90517 |
On my system gdm reliably wins the race resulting in not getting a greeter
|
|
|
c90517 |
when manually switching from an active session to VT1.
|
|
|
c90517 |
|
|
|
c90517 |
gdm already starts the greeter unconditionally from
|
|
|
c90517 |
gdm_local_display_factory_sync_seats() on both startup and when an user
|
|
|
c90517 |
session exits. gdm also starts it unconditionally when selecting
|
|
|
c90517 |
"Switch user" from an user session.
|
|
|
c90517 |
|
|
|
c90517 |
Now autologin sessions avoid the initial VT as well.
|
|
|
c90517 |
|
|
|
c90517 |
So we now can assume that the initial VT is free for the login screen's
|
|
|
c90517 |
use. And create_display already checks for and re-uses
|
|
|
c90517 |
an existing greeter, so we can safely remove the racy check.
|
|
|
c90517 |
---
|
|
|
c90517 |
daemon/gdm-local-display-factory.c | 13 -------------
|
|
|
c90517 |
1 file changed, 13 deletions(-)
|
|
|
c90517 |
|
|
|
c90517 |
diff --git a/daemon/gdm-local-display-factory.c b/daemon/gdm-local-display-factory.c
|
|
|
c90517 |
index 13d56dcff..8e46dbca2 100644
|
|
|
c90517 |
--- a/daemon/gdm-local-display-factory.c
|
|
|
c90517 |
+++ b/daemon/gdm-local-display-factory.c
|
|
|
c90517 |
@@ -752,73 +752,60 @@ on_vt_changed (GIOChannel *source,
|
|
|
c90517 |
|
|
|
c90517 |
g_debug ("GdmLocalDisplayFactory: tty of login window is %s", tty_of_login_window_vt);
|
|
|
c90517 |
if (g_strcmp0 (tty_of_login_window_vt, tty_of_previous_vt) == 0) {
|
|
|
c90517 |
GdmDisplayStore *store;
|
|
|
c90517 |
GdmDisplay *display;
|
|
|
c90517 |
|
|
|
c90517 |
g_debug ("GdmLocalDisplayFactory: VT switched from login window");
|
|
|
c90517 |
|
|
|
c90517 |
store = gdm_display_factory_get_display_store (GDM_DISPLAY_FACTORY (factory));
|
|
|
c90517 |
display = gdm_display_store_find (store,
|
|
|
c90517 |
lookup_by_session_id,
|
|
|
c90517 |
(gpointer) login_session_id);
|
|
|
c90517 |
|
|
|
c90517 |
if (display != NULL)
|
|
|
c90517 |
maybe_stop_greeter_in_background (factory, display);
|
|
|
c90517 |
} else {
|
|
|
c90517 |
g_debug ("GdmLocalDisplayFactory: VT not switched from login window");
|
|
|
c90517 |
}
|
|
|
c90517 |
}
|
|
|
c90517 |
}
|
|
|
c90517 |
|
|
|
c90517 |
/* if user jumped back to initial vt and it's empty put a login screen
|
|
|
c90517 |
* on it (unless a login screen is already running elsewhere, then
|
|
|
c90517 |
* jump to that login screen)
|
|
|
c90517 |
*/
|
|
|
c90517 |
if (strcmp (factory->priv->tty_of_active_vt, tty_of_initial_vt) != 0) {
|
|
|
c90517 |
g_debug ("GdmLocalDisplayFactory: active VT is not initial VT, so ignoring");
|
|
|
c90517 |
return G_SOURCE_CONTINUE;
|
|
|
c90517 |
}
|
|
|
c90517 |
|
|
|
c90517 |
- ret = sd_seat_get_active ("seat0", &active_session_id, NULL);
|
|
|
c90517 |
-
|
|
|
c90517 |
- if (ret == 0) {
|
|
|
c90517 |
- g_autofree char *state = NULL;
|
|
|
c90517 |
- ret = sd_session_get_state (active_session_id, &state);
|
|
|
c90517 |
-
|
|
|
c90517 |
- /* if there's something already running on the active VT then bail */
|
|
|
c90517 |
- if (ret == 0 && g_strcmp0 (state, "closing") != 0) {
|
|
|
c90517 |
- g_debug ("GdmLocalDisplayFactory: initial VT is in use, so ignoring");
|
|
|
c90517 |
- return G_SOURCE_CONTINUE;
|
|
|
c90517 |
- }
|
|
|
c90517 |
- }
|
|
|
c90517 |
-
|
|
|
c90517 |
if (gdm_local_display_factory_use_wayland ())
|
|
|
c90517 |
session_type = "wayland";
|
|
|
c90517 |
|
|
|
c90517 |
g_debug ("GdmLocalDisplayFactory: creating new display on seat0 because of VT change");
|
|
|
c90517 |
|
|
|
c90517 |
create_display (factory, "seat0", session_type, TRUE);
|
|
|
c90517 |
|
|
|
c90517 |
return G_SOURCE_CONTINUE;
|
|
|
c90517 |
}
|
|
|
c90517 |
#endif
|
|
|
c90517 |
|
|
|
c90517 |
static void
|
|
|
c90517 |
gdm_local_display_factory_start_monitor (GdmLocalDisplayFactory *factory)
|
|
|
c90517 |
{
|
|
|
c90517 |
g_autoptr (GIOChannel) io_channel = NULL;
|
|
|
c90517 |
|
|
|
c90517 |
factory->priv->seat_new_id = g_dbus_connection_signal_subscribe (factory->priv->connection,
|
|
|
c90517 |
"org.freedesktop.login1",
|
|
|
c90517 |
"org.freedesktop.login1.Manager",
|
|
|
c90517 |
"SeatNew",
|
|
|
c90517 |
"/org/freedesktop/login1",
|
|
|
c90517 |
NULL,
|
|
|
c90517 |
G_DBUS_SIGNAL_FLAGS_NONE,
|
|
|
c90517 |
on_seat_new,
|
|
|
c90517 |
g_object_ref (factory),
|
|
|
c90517 |
g_object_unref);
|
|
|
c90517 |
factory->priv->seat_removed_id = g_dbus_connection_signal_subscribe (factory->priv->connection,
|
|
|
c90517 |
"org.freedesktop.login1",
|
|
|
c90517 |
"org.freedesktop.login1.Manager",
|
|
|
c90517 |
"SeatRemoved",
|
|
|
c90517 |
--
|
|
|
e0b6b0 |
2.27.0
|
|
|
c90517 |
|