More fixes with wayland->xorg fallback

Related: RHEL-35045
Resolves: RHEL-50393

0001-display-Add-new-FAILING-state.patch

@@ -1,7 +1,7 @@
 From f7295f73f424e22eacb940c92e43326d75c901e1 Mon Sep 17 00:00:00 2001
 From: Ray Strode <rstrode@redhat.com>
 Date: Mon, 22 Jul 2024 14:58:47 -0400
-Subject: [PATCH 1/2] display: Add new FAILING state
+Subject: [PATCH 1/3] display: Add new FAILING state
 
 We need to be able to detect failure and quit plymouth before
 reacting to the failure (and starting Xorg).

0002-manager-Quit-plymouth-at-first-sign-of-failure.patch

@@ -1,14 +1,135 @@
-From d806a124b6b3bb8b265d6e99e86a787ccd22386d Mon Sep 17 00:00:00 2001
+From 27c78eb4efc598281eed9cd521ba1b05ee08e3d2 Mon Sep 17 00:00:00 2001
 From: Ray Strode <rstrode@redhat.com>
 Date: Mon, 22 Jul 2024 14:59:43 -0400
-Subject: [PATCH 2/2] manager: Quit plymouth at first sign of failure
+Subject: [PATCH 2/3] manager: Quit plymouth at first sign of failure
 
 Rather than quit plymouth after a replacement X server is already
 started, this commit does it a bit earlier, so there is a battle
 of display servers.
 ---
- daemon/gdm-manager.c | 5 +++++
+ common/gdm-address.c               |  4 ++--
- 1 file changed, 5 insertions(+)
+ daemon/gdm-manager.c               |  5 +++++
+ daemon/gdm-xdmcp-display-factory.c | 10 ++++++----
+ 3 files changed, 13 insertions(+), 6 deletions(-)
+
+diff --git a/common/gdm-address.c b/common/gdm-address.c
+index a8b73e286..3a507d0af 100644
+--- a/common/gdm-address.c
++++ b/common/gdm-address.c
+@@ -107,61 +107,61 @@ gdm_address_new_from_sockaddr (struct sockaddr *sa,
+ 
+         g_return_val_if_fail (sa != NULL, NULL);
+         g_return_val_if_fail (size >= sizeof (struct sockaddr), NULL);
+         g_return_val_if_fail (size <= sizeof (struct sockaddr_storage), NULL);
+ 
+         addr = g_new0 (GdmAddress, 1);
+         addr->ss = g_new0 (struct sockaddr_storage, 1);
+         memcpy (addr->ss, sa, size);
+ 
+         return addr;
+ }
+ 
+ /**
+  * gdm_address_get_sockaddr_storage:
+  * @address: A #GdmAddress
+  *
+  * This function tanslates @address into a equivalent
+  * sockaddr_storage
+  *
+  * Return value: A newly allocated sockaddr_storage structure the caller must free
+  * or %NULL if @address did not point to a valid #GdmAddress.
+  **/
+ struct sockaddr_storage *
+ gdm_address_get_sockaddr_storage (GdmAddress *address)
+ {
+         struct sockaddr_storage *ss;
+ 
+         g_return_val_if_fail (address != NULL, NULL);
+         g_return_val_if_fail (address->ss != NULL, NULL);
+ 
+-        ss = g_memdup (address->ss, sizeof (struct sockaddr_storage));
++        ss = g_memdup2 (address->ss, sizeof (struct sockaddr_storage));
+ 
+         return ss;
+ }
+ 
+ struct sockaddr_storage *
+ gdm_address_peek_sockaddr_storage (GdmAddress *address)
+ {
+         g_return_val_if_fail (address != NULL, NULL);
+ 
+         return address->ss;
+ }
+ 
+ static gboolean
+ v4_v4_equal (const struct sockaddr_in *a,
+              const struct sockaddr_in *b)
+ {
+         return a->sin_addr.s_addr == b->sin_addr.s_addr;
+ }
+ 
+ #ifdef ENABLE_IPV6
+ static gboolean
+ v6_v6_equal (struct sockaddr_in6 *a,
+              struct sockaddr_in6 *b)
+ {
+         return IN6_ARE_ADDR_EQUAL (&a->sin6_addr, &b->sin6_addr);
+ }
+ #endif
+ 
+ #define SA(__s)    ((struct sockaddr *) __s)
+ #define SIN(__s)   ((struct sockaddr_in *) __s)
+@@ -502,50 +502,50 @@ gdm_address_is_local (GdmAddress *address)
+ 
+         while (list != NULL) {
+                 GdmAddress *addr = list->data;
+ 
+                 if (gdm_address_equal (address, addr)) {
+                         return TRUE;
+                 }
+ 
+                 list = list->next;
+         }
+ 
+         return FALSE;
+ }
+ 
+ /**
+  * gdm_address_copy:
+  * @address: A #GdmAddress.
+  *
+  * Duplicates @address.
+  *
+  * Return value: Duplicated @address or %NULL if @address was not valid.
+  **/
+ GdmAddress *
+ gdm_address_copy (GdmAddress *address)
+ {
+         GdmAddress *addr;
+ 
+         g_return_val_if_fail (address != NULL, NULL);
+ 
+         addr = g_new0 (GdmAddress, 1);
+-        addr->ss = g_memdup (address->ss, sizeof (struct sockaddr_storage));
++        addr->ss = g_memdup2 (address->ss, sizeof (struct sockaddr_storage));
+ 
+         return addr;
+ }
+ 
+ /**
+  * gdm_address_free:
+  * @address: A #GdmAddress.
+  *
+  * Frees the memory allocated for @address.
+  **/
+ void
+ gdm_address_free (GdmAddress *address)
+ {
+         g_return_if_fail (address != NULL);
+ 
+         g_free (address->ss);
+         g_free (address);
+ }
  
 diff --git a/daemon/gdm-manager.c b/daemon/gdm-manager.c
 index 08c3cc177..100b967fb 100644
@@ -90,6 +211,165 @@ index 08c3cc177..100b967fb 100644
          char    *id;
  
          gdm_display_get_id (display, &id, NULL);
+diff --git a/daemon/gdm-xdmcp-display-factory.c b/daemon/gdm-xdmcp-display-factory.c
+index abb58faeb..e82cfe1b4 100644
+--- a/daemon/gdm-xdmcp-display-factory.c
++++ b/daemon/gdm-xdmcp-display-factory.c
+@@ -891,87 +891,87 @@ gdm_xdmcp_send_unwilling (GdmXdmcpDisplayFactory *factory,
+         header.length = 4 + factory->servhost.length + status.length;
+         header.version = XDM_PROTOCOL_VERSION;
+         XdmcpWriteHeader (&factory->buf, &header);
+ 
+         XdmcpWriteARRAY8 (&factory->buf, &factory->servhost);
+         XdmcpWriteARRAY8 (&factory->buf, &status);
+         XdmcpFlush (factory->socket_fd,
+                     &factory->buf,
+                     (XdmcpNetaddr)gdm_address_peek_sockaddr_storage (address),
+                     (int)gdm_sockaddr_len (gdm_address_peek_sockaddr_storage (address)));
+ 
+         last_time = time (NULL);
+ }
+ 
+ #define SIN(__s)   ((struct sockaddr_in *) __s)
+ #define SIN6(__s)  ((struct sockaddr_in6 *) __s)
+ 
+ static void
+ set_port_for_request (GdmAddress *address,
+                       ARRAY8     *port)
+ {
+         struct sockaddr_storage *ss;
+ 
+         ss = gdm_address_peek_sockaddr_storage (address);
+ 
+         /* we depend on this being 2 elsewhere as well */
+         port->length = 2;
+ 
+         switch (ss->ss_family) {
+         case AF_INET:
+-                port->data = (CARD8 *)g_memdup (&(SIN (ss)->sin_port), port->length);
++                port->data = (CARD8 *)g_memdup2 (&(SIN (ss)->sin_port), port->length);
+                 break;
+         case AF_INET6:
+-                port->data = (CARD8 *)g_memdup (&(SIN6 (ss)->sin6_port), port->length);
++                port->data = (CARD8 *)g_memdup2 (&(SIN6 (ss)->sin6_port), port->length);
+                 break;
+         default:
+                 port->data = NULL;
+                 break;
+         }
+ }
+ 
+ static void
+ set_address_for_request (GdmAddress *address,
+                          ARRAY8     *addr)
+ {
+         struct sockaddr_storage *ss;
+ 
+         ss = gdm_address_peek_sockaddr_storage (address);
+ 
+         switch (ss->ss_family) {
+         case AF_INET:
+                 addr->length = sizeof (struct in_addr);
+-                addr->data = g_memdup (&SIN (ss)->sin_addr, addr->length);
++                addr->data = g_memdup2 (&SIN (ss)->sin_addr, addr->length);
+                 break;
+         case AF_INET6:
+                 addr->length = sizeof (struct in6_addr);
+-                addr->data = g_memdup (&SIN6 (ss)->sin6_addr, addr->length);
++                addr->data = g_memdup2 (&SIN6 (ss)->sin6_addr, addr->length);
+                 break;
+         default:
+                 addr->length = 0;
+                 addr->data = NULL;
+                 break;
+         }
+ 
+ }
+ 
+ static void
+ gdm_xdmcp_send_forward_query (GdmXdmcpDisplayFactory  *factory,
+                               IndirectClient          *ic,
+                               GdmAddress              *address,
+                               GdmAddress              *display_address,
+                               ARRAYofARRAY8Ptr         authlist)
+ {
+         XdmcpHeader              header;
+         int                      i;
+         ARRAY8                   addr;
+         ARRAY8                   port;
+         char                    *host;
+         char                    *serv;
+ 
+         g_assert (ic != NULL);
+         g_assert (ic->chosen_address != NULL);
+ 
+         host = NULL;
+         gdm_address_get_numeric_info (ic->chosen_address, &host, NULL);
+         g_debug ("GdmXdmcpDisplayFactory: Sending forward query to %s",
+                    host ? host : "(null)");
+@@ -2063,60 +2063,62 @@ on_display_status_changed (GdmDisplay             *display,
+ {
+         int              status;
+         GdmLaunchEnvironment *launch_environment;
+         GdmSession *session;
+         GdmAddress *address;
+         gint32  session_number;
+         int display_number;
+ 
+         launch_environment = NULL;
+         g_object_get (display, "launch-environment", &launch_environment, NULL);
+ 
+         session = NULL;
+         if (launch_environment != NULL) {
+                 session = gdm_launch_environment_get_session (launch_environment);
+         }
+ 
+         status = gdm_display_get_status (display);
+ 
+         g_debug ("GdmXdmcpDisplayFactory: xdmcp display status changed: %d", status);
+         switch (status) {
+         case GDM_DISPLAY_FINISHED:
+                 g_object_get (display,
+                               "remote-address", &address,
+                               "x11-display-number", &display_number,
+                               "session-number", &session_number,
+                               NULL);
+                 gdm_xdmcp_send_alive (factory, address, display_number, session_number);
+ 
+                 gdm_display_factory_queue_purge_displays (GDM_DISPLAY_FACTORY (factory));
+                 break;
++        case GDM_DISPLAY_FAILING:
++                break;
+         case GDM_DISPLAY_FAILED:
+                 gdm_display_factory_queue_purge_displays (GDM_DISPLAY_FACTORY (factory));
+                 break;
+         case GDM_DISPLAY_UNMANAGED:
+                 if (session != NULL) {
+                         g_signal_handlers_disconnect_by_func (G_OBJECT (session),
+                                                               G_CALLBACK (on_client_disconnected),
+                                                               display);
+                 }
+                 break;
+         case GDM_DISPLAY_PREPARED:
+                 break;
+         case GDM_DISPLAY_MANAGED:
+                 if (session != NULL) {
+                         g_signal_connect_object (G_OBJECT (session),
+                                                  "client-disconnected",
+                                                  G_CALLBACK (on_client_disconnected),
+                                                  display, G_CONNECT_SWAPPED);
+                         g_signal_connect_object (G_OBJECT (session),
+                                                  "disconnected",
+                                                  G_CALLBACK (on_client_disconnected),
+                                                  display, G_CONNECT_SWAPPED);
+                 }
+                 break;
+         default:
+                 g_assert_not_reached ();
+                 break;
+         }
+ 
+         g_clear_object (&launch_environment);
 -- 
 2.44.0
 

0003-manager-Quit-plymouth-synchronously.patch

@@ -0,0 +1,94 @@
+From 190a9f31446ddab66c8b5c2e246a6253f85bde76 Mon Sep 17 00:00:00 2001
+From: Ray Strode <rstrode@redhat.com>
+Date: Wed, 24 Jul 2024 08:40:08 -0400
+Subject: [PATCH 3/3] manager: Quit plymouth synchronously
+
+Plymouth needs to finish quitting before we start Xorg, so we can't
+run it async. This command makes sure it gets run synchronously.
+---
+ daemon/gdm-manager.c | 11 ++++++++---
+ 1 file changed, 8 insertions(+), 3 deletions(-)
+
+diff --git a/daemon/gdm-manager.c b/daemon/gdm-manager.c
+index 100b967fb..d4ad949fe 100644
+--- a/daemon/gdm-manager.c
++++ b/daemon/gdm-manager.c
+@@ -167,67 +167,72 @@ plymouth_prepare_for_transition (void)
+ 
+         error = NULL;
+         res = g_spawn_command_line_sync ("plymouth deactivate",
+                                          NULL, NULL, NULL, &error);
+         if (! res) {
+                 g_warning ("Could not deactivate plymouth: %s", error->message);
+                 g_error_free (error);
+         }
+ }
+ 
+ static gboolean
+ plymouth_quit_with_transition (void)
+ {
+         gboolean res;
+         GError  *error;
+ 
+         error = NULL;
+         res = g_spawn_command_line_async ("plymouth quit --retain-splash", &error);
+         if (! res) {
+                 g_warning ("Could not quit plymouth: %s", error->message);
+                 g_error_free (error);
+         }
+ 
+         return G_SOURCE_REMOVE;
+ }
+ 
+ static void
+ plymouth_quit_without_transition (void)
+ {
+         gboolean res;
+-        GError  *error;
++        g_autoptr (GError) error = NULL;
++        g_autofree char *standard_error = NULL;
++        int wait_status = 0;
+ 
+         error = NULL;
+-        res = g_spawn_command_line_async ("plymouth quit", &error);
++        res = g_spawn_command_line_sync ("plymouth quit", NULL, &standard_error, &wait_status, &error);
+         if (! res) {
+                 g_warning ("Could not quit plymouth: %s", error->message);
+-                g_error_free (error);
++        } else if (!WIFEXITED (wait_status) || WEXITSTATUS (wait_status) != 0) {
++                g_warning ("plymouth errored on quit command%s%s",
++                           standard_error? ":" : "",
++                           standard_error?: "");
+         }
+ }
+ #endif
+ 
+ static char *
+ get_session_id_for_pid (pid_t    pid,
+                         GError **error)
+ {
+         char *session, *gsession;
+         int ret;
+ 
+         session = NULL;
+         ret = sd_pid_get_session (pid, &session);
+         if (ret < 0) {
+                 g_set_error (error,
+                              GDM_DISPLAY_ERROR,
+                              GDM_DISPLAY_ERROR_GETTING_SESSION_INFO,
+                              "Error getting session id from systemd: %s",
+                              g_strerror (-ret));
+                 return NULL;
+         }
+ 
+         if (session != NULL) {
+                 gsession = g_strdup (session);
+                 free (session);
+ 
+                 return gsession;
+         } else {
+                 return NULL;
+         }
+-- 
+2.44.0
+

gdm.spec

@@ -11,7 +11,7 @@
 Name: gdm
 Epoch: 1
 Version: 40.1
-Release: 26%{?dist}
+Release: 27%{?dist}
 Summary: The GNOME Display Manager
 
 License: GPLv2+
@@ -56,6 +56,7 @@ Patch100002: 0002-local-display-factory-Fix-user-switching-with-legacy.patch
 
 Patch110001: 0001-display-Add-new-FAILING-state.patch
 Patch110002: 0002-manager-Quit-plymouth-at-first-sign-of-failure.patch
+Patch110003: 0003-manager-Quit-plymouth-synchronously.patch
 
 # Non-upstreamable workarounds
 Patch66610001: 0001-data-reap-gdm-sessions-on-shutdown.patch
@@ -359,6 +360,11 @@ dconf update || :
 %{_libdir}/pkgconfig/gdm-pam-extensions.pc
 
 %changelog
+* Wed Jul 24 2024 Ray Strode <rstrode@redhat.com> - 40.1-27
+- More fixes with wayland->xorg fallback
+  Related: RHEL-35045
+  Resolves: RHEL-50393
+
 * Tue Jul 23 2024 Ray Strode <rstrode@redhat.com> - 40.1-26
 - Fix failure doing wayland->xorg fallback
   Related: RHEL-35045