From 6a7054d12d1177184ed20f1d2263eef476d25b8f Mon Sep 17 00:00:00 2001

From: Ray Strode <rstrode@redhat.com>

Date: Fri, 20 Dec 2013 11:22:53 -0500

Subject: [PATCH 10/19] Allow saved-session directory to be a symlink

This gives us the option of adding a rudimentary session

chooser later.

---

 gnome-session/gsm-session-save.c | 36 ++++++++++++++++++++++++++++++------

 gnome-session/gsm-util.c         |  6 ------

 2 files changed, 30 insertions(+), 12 deletions(-)

diff --git a/gnome-session/gsm-session-save.c b/gnome-session/gsm-session-save.c

index eebc5ff1..66914b57 100644

--- a/gnome-session/gsm-session-save.c

+++ b/gnome-session/gsm-session-save.c

@@ -148,67 +148,91 @@ gsm_session_save (GsmStore  *client_store,

          * one shot only)

          */

         settings = g_settings_new (GSM_MANAGER_SCHEMA);

         g_settings_set_boolean (settings, KEY_AUTOSAVE_ONE_SHOT, FALSE);

         g_object_unref (settings);

         save_dir = gsm_util_get_saved_session_dir ();

         if (save_dir == NULL) {

                 g_warning ("GsmSessionSave: cannot create saved session directory");

                 return;

         }

         tmp_dir = gsm_util_get_empty_tmp_session_dir ();

         if (tmp_dir == NULL) {

                 g_warning ("GsmSessionSave: cannot create new saved session directory");

                 return;

         }

         /* save the session in a temp directory, and remember the discard

          * commands */

         data.dir = tmp_dir;

         data.discard_hash = g_hash_table_new_full (g_str_hash, g_str_equal,

                                                    g_free, NULL);

         data.error = error;

         gsm_store_foreach (client_store,

                            (GsmStoreFunc) save_one_client,

                            &data);

         if (!*error) {

-                /* remove the old saved session */

-                gsm_session_clear_saved_session (save_dir, data.discard_hash);

+                char *session_dir;

-                /* rename the temp session dir */

-                if (g_file_test (save_dir, G_FILE_TEST_IS_DIR))

-                        g_rmdir (save_dir);

-                g_rename (tmp_dir, save_dir);

+                if (g_file_test (save_dir, G_FILE_TEST_IS_SYMLINK))

+                        session_dir = g_file_read_link (save_dir, error);

+                else

+                        session_dir = g_strdup (save_dir);

+

+                if (session_dir != NULL) {

+

+                        char *absolute_session_dir;

+

+                        if (g_path_is_absolute (session_dir)) {

+                                absolute_session_dir = g_strdup (session_dir);

+                        } else {

+                                char *parent_dir;

+

+                                parent_dir = g_path_get_dirname (save_dir);

+                                absolute_session_dir = g_build_filename (parent_dir, session_dir, NULL);

+                                g_free (parent_dir);

+                        }

+                        g_free (session_dir);

+

+                        /* remove the old saved session */

+                        gsm_session_clear_saved_session (absolute_session_dir, data.discard_hash);

+

+                        if (g_file_test (absolute_session_dir, G_FILE_TEST_IS_DIR))

+                                g_rmdir (absolute_session_dir);

+                        g_rename (tmp_dir, absolute_session_dir);

+

+                        g_free (absolute_session_dir);

+                }

         } else {

                 g_warning ("GsmSessionSave: error saving session: %s", (*error)->message);

                 /* FIXME: we should create a hash table filled with the discard

                  * commands that are in desktop files from save_dir. */

                 gsm_session_clear_saved_session (tmp_dir, NULL);

                 g_rmdir (tmp_dir);

         }

         g_hash_table_destroy (data.discard_hash);

         g_free (tmp_dir);

 }

 static gboolean

 gsm_session_clear_one_client (const char *filename,

                               GHashTable *discard_hash)

 {

         gboolean  result = TRUE;

         GKeyFile *key_file;

         char     *discard_exec = NULL;

         char    **envp;

         g_debug ("GsmSessionSave: removing '%s' from saved session", filename);

         envp = (char **) gsm_util_listenv ();

         key_file = g_key_file_new ();

         if (g_key_file_load_from_file (key_file, filename,

                                        G_KEY_FILE_NONE, NULL)) {

                 char **argv;

                 int    argc;

diff --git a/gnome-session/gsm-util.c b/gnome-session/gsm-util.c

index 13f674cb..e30cf912 100644

--- a/gnome-session/gsm-util.c

+++ b/gnome-session/gsm-util.c

@@ -71,69 +71,63 @@ gsm_util_find_desktop_file_for_app_name (const char *name,

                 g_debug ("GsmUtil: found in XDG dirs: '%s'", app_path);

         }

         /* look for gnome vendor prefix */

         if (app_path == NULL) {

                 g_free (desktop_file);

                 desktop_file = g_strdup_printf ("gnome-%s.desktop", name);

                 g_key_file_load_from_dirs (key_file,

                                            desktop_file,

                                            (const char **) app_dirs,

                                            &app_path,

                                            G_KEY_FILE_NONE,

                                            NULL);

                 if (app_path != NULL) {

                         g_debug ("GsmUtil: found in XDG dirs: '%s'", app_path);

                 }

         }

         g_free (desktop_file);

         g_key_file_free (key_file);

         g_strfreev (app_dirs);

         return app_path;

 }

 static gboolean

 ensure_dir_exists (const char *dir)

 {

-        if (g_file_test (dir, G_FILE_TEST_IS_DIR))

-                return TRUE;

-

         if (g_mkdir_with_parents (dir, 0755) == 0)

                 return TRUE;

-        if (errno == EEXIST)

-                return g_file_test (dir, G_FILE_TEST_IS_DIR);

-

         g_warning ("GsmSessionSave: Failed to create directory %s: %s", dir, strerror (errno));

         return FALSE;

 }

 gchar *

 gsm_util_get_empty_tmp_session_dir (void)

 {

         char *tmp;

         gboolean exists;

         tmp = g_build_filename (g_get_user_config_dir (),

                                 "gnome-session",

                                 "saved-session.new",

                                 NULL);

         exists = ensure_dir_exists (tmp);

         if (G_UNLIKELY (!exists)) {

                 g_warning ("GsmSessionSave: could not create directory for saved session: %s", tmp);

                 g_free (tmp);

                 return NULL;

         } else {

                 /* make sure it's empty */

                 GDir       *dir;

                 const char *filename;

                 dir = g_dir_open (tmp, 0, NULL);

                 if (dir) {

                         while ((filename = g_dir_read_name (dir))) {

-- 

2.12.0