launcher: Remove now unused file management API

The open/close helpers for (maybe) restricted files has been replaced
with MetaDevicePool, so lets remove that functionality from here.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1828>

src/backends/native/meta-launcher.c

@@ -51,9 +51,6 @@ struct _MetaLauncher
   MetaDbusLogin1Seat *seat_proxy;
   char *seat_id;
 
-  struct {
-    GHashTable *sysfs_fds;
-  } impl;
   gboolean session_active;
 };
 
@@ -393,58 +390,6 @@ out:
   close (fd);
 }
 
-static int
-on_evdev_device_open_in_input_impl (const char  *path,
-                                    int          flags,
-                                    gpointer     user_data,
-                                    GError     **error)
-{
-  MetaLauncher *self = user_data;
-
-  /* Allow readonly access to sysfs */
-  if (g_str_has_prefix (path, "/sys/"))
-    {
-      int fd;
-
-      do
-        {
-          fd = open (path, flags);
-        }
-      while (fd < 0 && errno == EINTR);
-
-      if (fd < 0)
-        {
-          g_set_error (error,
-                       G_FILE_ERROR,
-                       g_file_error_from_errno (errno),
-                       "Could not open /sys file: %s: %m", path);
-          return -1;
-        }
-
-      g_hash_table_add (self->impl.sysfs_fds, GINT_TO_POINTER (fd));
-      return fd;
-    }
-
-  return meta_launcher_open_restricted (self, path, error);
-}
-
-static void
-on_evdev_device_close_in_input_impl (int      fd,
-                                     gpointer user_data)
-{
-  MetaLauncher *self = user_data;
-
-  if (g_hash_table_lookup (self->impl.sysfs_fds, GINT_TO_POINTER (fd)))
-    {
-      /* /sys/ paths just need close() here */
-      g_hash_table_remove (self->impl.sysfs_fds, GINT_TO_POINTER (fd));
-      close (fd);
-      return;
-    }
-
-  meta_launcher_close_restricted (self, fd);
-}
-
 static void
 sync_active (MetaLauncher *self)
 {
@@ -545,13 +490,8 @@ meta_launcher_new (GError **error)
   self->session_proxy = g_object_ref (session_proxy);
   self->seat_proxy = g_object_ref (seat_proxy);
   self->seat_id = g_steal_pointer (&seat_id);
-  self->impl.sysfs_fds = g_hash_table_new (NULL, NULL);
   self->session_active = TRUE;
 
-  meta_seat_impl_set_device_callbacks (on_evdev_device_open_in_input_impl,
-                                       on_evdev_device_close_in_input_impl,
-                                       self);
-
   g_signal_connect (self->session_proxy, "notify::active", G_CALLBACK (on_active_changed), self);
 
   return self;
@@ -568,11 +508,9 @@ meta_launcher_new (GError **error)
 void
 meta_launcher_free (MetaLauncher *self)
 {
-  meta_seat_impl_set_device_callbacks (NULL, NULL, NULL);
   g_free (self->seat_id);
   g_object_unref (self->seat_proxy);
   g_object_unref (self->session_proxy);
-  g_hash_table_destroy (self->impl.sysfs_fds);
   g_free (self);
 }
 

src/backends/native/meta-seat-impl.c

@@ -75,10 +75,6 @@ struct _MetaEventSource
   GPollFD event_poll_fd;
 };
 
-static MetaOpenDeviceCallback  device_open_callback;
-static MetaCloseDeviceCallback device_close_callback;
-static gpointer                device_callback_data;
-
 #ifdef CLUTTER_ENABLE_DEBUG
 static const char *device_type_str[] = {
   "pointer",            /* CLUTTER_POINTER_DEVICE */
@@ -3166,31 +3162,6 @@ meta_seat_impl_init (MetaSeatImpl *seat_impl)
   seat_impl->barrier_manager = meta_barrier_manager_native_new ();
 }
 
-/**
- * meta_seat_impl_set_device_callbacks: (skip)
- * @open_callback: the user replacement for open()
- * @close_callback: the user replacement for close()
- * @user_data: user data for @callback
- *
- * Through this function, the application can set a custom callback
- * to be invoked when Clutter is about to open an evdev device. It can do
- * so if special handling is needed, for example to circumvent permission
- * problems.
- *
- * Setting @callback to %NULL will reset the default behavior.
- *
- * For reliable effects, this function must be called before clutter_init().
- */
-void
-meta_seat_impl_set_device_callbacks (MetaOpenDeviceCallback  open_callback,
-                                     MetaCloseDeviceCallback close_callback,
-                                     gpointer                user_data)
-{
-  device_open_callback = open_callback;
-  device_close_callback = close_callback;
-  device_callback_data = user_data;
-}
-
 void
 meta_seat_impl_update_xkb_state_in_impl (MetaSeatImpl *seat_impl)
 {

src/backends/native/meta-seat-impl.h

@@ -199,26 +199,6 @@ void meta_seat_impl_release_touch_state_in_impl (MetaSeatImpl   *seat_impl,
 
 void meta_seat_impl_update_xkb_state_in_impl (MetaSeatImpl *seat_impl);
 
-/**
- * MetaOpenDeviceCallback:
- * @path: the device path
- * @flags: flags to be passed to open
- *
- * This callback will be called when Clutter needs to access an input
- * device. It should return an open file descriptor for the file at @path,
- * or -1 if opening failed.
- */
-typedef int (* MetaOpenDeviceCallback) (const char  *path,
-                                        int          flags,
-                                        gpointer     user_data,
-                                        GError     **error);
-typedef void (* MetaCloseDeviceCallback) (int          fd,
-                                          gpointer     user_data);
-
-void  meta_seat_impl_set_device_callbacks (MetaOpenDeviceCallback  open_callback,
-                                           MetaCloseDeviceCallback close_callback,
-                                           gpointer                user_data);
-
 void  meta_seat_impl_release_devices (MetaSeatImpl *seat_impl);
 void  meta_seat_impl_reclaim_devices (MetaSeatImpl *seat_impl);