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gdm/SOURCES/0001-libgdm-Don-t-collect-twice-sessions-on-usr-share.patch

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From b52648f991e4537b18620444f4d7b2f9663aed33 Mon Sep 17 00:00:00 2001
From: Joan Torres Lopez <joantolo@redhat.com>
Date: Mon, 9 Jun 2025 17:00:54 +0200
Subject: [PATCH 1/2] libgdm: Don't collect twice sessions on /usr/share
Using system_data_dirs already includes /usr/share, so we don't need to
add it manually.
---
docs/C/index.docbook | 4 ++--
libgdm/gdm-sessions.c | 9 ---------
2 files changed, 2 insertions(+), 11 deletions(-)
diff --git a/docs/C/index.docbook b/docs/C/index.docbook
index 134b9bc..ab2a87f 100644
--- a/docs/C/index.docbook
+++ b/docs/C/index.docbook
@@ -2002,8 +2002,8 @@ AutostartCondition=GNOME /desktop/gnome/applications/at/screen_keyboard_enabled
search the following directories in this order to find desktop files:
<filename>&lt;etc&gt;/X11/sessions/</filename>,
<filename>&lt;dmconfdir&gt;/Sessions</filename>,
- <filename>&lt;share&gt;/xsessions</filename>, and
- <filename>&lt;share&gt;/gdm/BuiltInSessions</filename>. By default the
+ <filename>&lt;share&gt;/gdm/BuiltInSessions</filename>, and
+ <filename>&lt;share&gt;/xsessions</filename>. By default the
<filename>&lt;dmconfdir&gt;</filename> is set to
<filename>&lt;etc&gt;/dm/</filename> unless GDM is configured to use
a different directory via the "--with-dmconfdir" option.
diff --git a/libgdm/gdm-sessions.c b/libgdm/gdm-sessions.c
index f078e04..e4a0e6b 100644
--- a/libgdm/gdm-sessions.c
+++ b/libgdm/gdm-sessions.c
@@ -275,7 +275,6 @@ collect_sessions (void)
"/etc/X11/sessions/",
DMCONFDIR "/Sessions/",
DATADIR "/gdm/BuiltInSessions/",
- DATADIR "/xsessions/",
};
g_auto (GStrv) supported_session_types = NULL;
@@ -296,20 +295,12 @@ collect_sessions (void)
}
#ifdef ENABLE_WAYLAND_SUPPORT
- const char *wayland_search_dirs[] = {
- DATADIR "/wayland-sessions/",
- };
-
wayland_search_array = g_ptr_array_new_with_free_func (g_free);
for (i = 0; system_data_dirs[i]; i++) {
session_dir = g_build_filename (system_data_dirs[i], "wayland-sessions", NULL);
g_ptr_array_add (wayland_search_array, session_dir);
}
-
- for (i = 0; i < G_N_ELEMENTS (wayland_search_dirs); i++) {
- g_ptr_array_add (wayland_search_array, g_strdup (wayland_search_dirs[i]));
- }
#endif
if (gdm_available_sessions_map == NULL) {
--
2.50.1
From ac9d403b5b27cbd8396a696223cd96fbac56f142 Mon Sep 17 00:00:00 2001
From: Joan Torres Lopez <joantolo@redhat.com>
Date: Mon, 9 Jun 2025 17:11:01 +0200
Subject: [PATCH 2/2] libgdm: Ensure loading session files is done in the right
order
Loading session files is done with the following precedence order:
1. Sessions defined in /etc/X11/sessions/
2. Sessions defined in <dmconfdir>/Sessions
3. Built-in sessions in <share>/gdm/BuiltInSessions
4. X11 sessions in system_data_dirs
5. Wayland sessions in system_data_dirs
Sessions dirs have precedence in the order they are added to
dirs_search_array.
This fixes an issue where sessions at system_data_dirs were being added
before sessions in /etc/.
---
libgdm/gdm-sessions.c | 49 +++++++++++++++++--------------------------
1 file changed, 19 insertions(+), 30 deletions(-)
diff --git a/libgdm/gdm-sessions.c b/libgdm/gdm-sessions.c
index e4a0e6b..e0d0044 100644
--- a/libgdm/gdm-sessions.c
+++ b/libgdm/gdm-sessions.c
@@ -267,8 +267,7 @@ static void
collect_sessions (void)
{
g_autoptr(GHashTable) names_seen_before = NULL;
- g_autoptr(GPtrArray) xorg_search_array = NULL;
- g_autoptr(GPtrArray) wayland_search_array = NULL;
+ g_autoptr(GPtrArray) dirs_search_array = NULL;
gchar *session_dir = NULL;
int i;
const char *xorg_search_dirs[] = {
@@ -281,26 +280,30 @@ collect_sessions (void)
supported_session_types = g_strsplit (g_getenv ("GDM_SUPPORTED_SESSION_TYPES"), ":", -1);
names_seen_before = g_hash_table_new (g_str_hash, g_str_equal);
- xorg_search_array = g_ptr_array_new_with_free_func (g_free);
+ dirs_search_array = g_ptr_array_new_with_free_func (g_free);
const gchar * const *system_data_dirs = g_get_system_data_dirs ();
- for (i = 0; system_data_dirs[i]; i++) {
- session_dir = g_build_filename (system_data_dirs[i], "xsessions", NULL);
- g_ptr_array_add (xorg_search_array, session_dir);
- }
+ if (!supported_session_types || g_strv_contains ((const char * const *) supported_session_types, "x11")) {
+ for (i = 0; i < G_N_ELEMENTS (xorg_search_dirs); i++) {
+ g_ptr_array_add (dirs_search_array, g_strdup (xorg_search_dirs[i]));
+ }
- for (i = 0; i < G_N_ELEMENTS (xorg_search_dirs); i++) {
- g_ptr_array_add (xorg_search_array, g_strdup (xorg_search_dirs[i]));
+ for (i = 0; system_data_dirs[i]; i++) {
+ session_dir = g_build_filename (system_data_dirs[i], "xsessions", NULL);
+ g_ptr_array_add (dirs_search_array, session_dir);
+ }
}
#ifdef ENABLE_WAYLAND_SUPPORT
- wayland_search_array = g_ptr_array_new_with_free_func (g_free);
-
- for (i = 0; system_data_dirs[i]; i++) {
- session_dir = g_build_filename (system_data_dirs[i], "wayland-sessions", NULL);
- g_ptr_array_add (wayland_search_array, session_dir);
+#ifdef ENABLE_USER_DISPLAY_SERVER
+ if (!supported_session_types || g_strv_contains ((const char * const *) supported_session_types, "wayland")) {
+ for (i = 0; system_data_dirs[i]; i++) {
+ session_dir = g_build_filename (system_data_dirs[i], "wayland-sessions", NULL);
+ g_ptr_array_add (dirs_search_array, session_dir);
+ }
}
+#endif
#endif
if (gdm_available_sessions_map == NULL) {
@@ -308,22 +311,10 @@ collect_sessions (void)
g_free, (GDestroyNotify)gdm_session_file_free);
}
- if (!supported_session_types || g_strv_contains ((const char * const *) supported_session_types, "x11")) {
- for (i = 0; i < xorg_search_array->len; i++) {
- collect_sessions_from_directory (g_ptr_array_index (xorg_search_array, i));
- }
+ for (i = dirs_search_array->len - 1; i >= 0; i--) {
+ collect_sessions_from_directory (g_ptr_array_index (dirs_search_array, i));
}
-#ifdef ENABLE_WAYLAND_SUPPORT
-#ifdef ENABLE_USER_DISPLAY_SERVER
- if (!supported_session_types || g_strv_contains ((const char * const *) supported_session_types, "wayland")) {
- for (i = 0; i < wayland_search_array->len; i++) {
- collect_sessions_from_directory (g_ptr_array_index (wayland_search_array, i));
- }
- }
-#endif
-#endif
-
g_hash_table_foreach_remove (gdm_available_sessions_map,
remove_duplicate_sessions,
names_seen_before);
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