wayland: Implement the "inputfd" wayland protocols

This allows lending control to applications of evdev devices,
and withdrawing it with focus.

src/meson.build

@@ -533,6 +533,12 @@ if have_wayland
     'wayland/meta-wayland-inhibit-shortcuts-dialog.c',
     'wayland/meta-wayland-inhibit-shortcuts-dialog.h',
     'wayland/meta-wayland-inhibit-shortcuts.h',
+    'wayland/meta-wayland-inputfd-evdev-device.c',
+    'wayland/meta-wayland-inputfd-evdev-device.h',
+    'wayland/meta-wayland-inputfd-manager.c',
+    'wayland/meta-wayland-inputfd-manager.h',
+    'wayland/meta-wayland-inputfd-seat.c',
+    'wayland/meta-wayland-inputfd-seat.h',
     'wayland/meta-wayland-input-device.c',
     'wayland/meta-wayland-input-device.h',
     'wayland/meta-wayland-keyboard.c',
@@ -814,6 +820,7 @@ if have_wayland
     ['gtk-primary-selection', 'private', ],
     ['gtk-shell', 'private', ],
     ['gtk-text-input', 'private', ],
+    ['inputfd', 'unstable', 'v1', ],
     ['keyboard-shortcuts-inhibit', 'unstable', 'v1', ],
     ['linux-dmabuf', 'unstable', 'v1', ],
     ['pointer-constraints', 'unstable', 'v1', ],

src/wayland/meta-wayland-inputfd-evdev-device.c

@@ -0,0 +1,287 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2018 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+#include "config.h"
+
+#include <linux/input.h>
+#include <sys/ioctl.h>
+
+#include "backends/native/meta-backend-native.h"
+#include "compositor/meta-surface-actor-wayland.h"
+#include "inputfd-unstable-v1-server-protocol.h"
+#include "wayland/meta-wayland-inputfd-evdev-device.h"
+
+static void device_open_fd (MetaWaylandInputFdEvdevDevice *device);
+
+static void
+unbind_resource (struct wl_resource *resource)
+{
+  wl_list_remove (wl_resource_get_link (resource));
+}
+
+static void
+move_resources (struct wl_list *destination,
+                struct wl_list *source)
+{
+  wl_list_insert_list (destination, source);
+  wl_list_init (source);
+}
+
+static void
+move_resources_for_client (struct wl_list   *destination,
+			   struct wl_list   *source,
+			   struct wl_client *client)
+{
+  struct wl_resource *resource, *tmp;
+
+  wl_resource_for_each_safe (resource, tmp, source)
+    {
+      if (wl_resource_get_client (resource) == client)
+        {
+          wl_list_remove (wl_resource_get_link (resource));
+          wl_list_insert (destination, wl_resource_get_link (resource));
+        }
+    }
+}
+
+static void
+evdev_device_handle_focus_surface_destroy (struct wl_listener *listener,
+                                           void               *data)
+{
+  MetaWaylandInputFdEvdevDevice *device = wl_container_of (listener, device,
+                                                           focus_surface_listener);
+
+  meta_wayland_inputfd_evdev_device_set_focus (device, NULL);
+}
+
+static gboolean
+check_device_qualifies (GUdevDevice *device)
+{
+  const gchar *path = g_udev_device_get_device_file (device);
+
+  if (!path || !strstr (path, "/event"))
+    return FALSE;
+  if (!g_udev_device_get_property_as_boolean (device, "ID_INPUT_JOYSTICK"))
+    return FALSE;
+
+  return TRUE;
+}
+
+MetaWaylandInputFdEvdevDevice *
+meta_wayland_inputfd_evdev_device_new (MetaWaylandInputFdSeat *seat,
+                                       GUdevDevice            *device)
+{
+  MetaWaylandInputFdEvdevDevice *evdev_device;
+  GUdevDevice *parent;
+
+  if (!check_device_qualifies (device))
+    return NULL;
+
+  parent = g_udev_device_get_parent (device);
+
+  evdev_device = g_slice_new0 (MetaWaylandInputFdEvdevDevice);
+  evdev_device->udev_device = g_object_ref (device);
+  wl_list_init (&evdev_device->resource_list);
+  wl_list_init (&evdev_device->focus_resource_list);
+  evdev_device->focus_surface_listener.notify =
+    evdev_device_handle_focus_surface_destroy;
+  evdev_device->fd = -1;
+
+  evdev_device->name =
+    g_udev_device_get_sysfs_attr (parent, "name");
+  evdev_device->vid =
+    strtol (g_udev_device_get_property (device, "ID_VENDOR_ID"),
+            NULL, 16);
+  evdev_device->pid =
+    strtol (g_udev_device_get_property (device, "ID_MODEL_ID"),
+            NULL, 16);
+
+  g_object_unref (parent);
+
+  return evdev_device;
+}
+
+void
+meta_wayland_inputfd_evdev_device_free (MetaWaylandInputFdEvdevDevice *evdev_device)
+{
+  struct wl_resource *resource, *next;
+
+  meta_wayland_inputfd_evdev_device_set_focus (evdev_device, NULL);
+
+  wl_resource_for_each_safe (resource, next, &evdev_device->resource_list)
+    {
+      zwp_inputfd_device_evdev_v1_send_removed (resource);
+      wl_list_remove (wl_resource_get_link (resource));
+      wl_list_init (wl_resource_get_link (resource));
+    }
+
+  g_object_unref (evdev_device->udev_device);
+  g_slice_free (MetaWaylandInputFdEvdevDevice, evdev_device);
+}
+
+static void
+inputfd_device_evdev_destroy (struct wl_client   *client,
+                              struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static const struct zwp_inputfd_device_evdev_v1_interface inputfd_device_evdev_interface = {
+  inputfd_device_evdev_destroy,
+};
+
+struct wl_resource *
+meta_wayland_inputfd_evdev_device_create_new_resource (MetaWaylandInputFdEvdevDevice *device,
+                                                       struct wl_client              *client,
+                                                       struct wl_resource            *seat_resource,
+                                                       uint32_t                       id)
+{
+  struct wl_resource *resource;
+
+  resource = wl_resource_create (client, &zwp_inputfd_device_evdev_v1_interface,
+                                 wl_resource_get_version (seat_resource),
+                                 id);
+  wl_resource_set_implementation (resource, &inputfd_device_evdev_interface,
+                                  device, unbind_resource);
+  wl_resource_set_user_data (resource, device);
+  wl_list_insert (&device->resource_list, wl_resource_get_link (resource));
+
+  return resource;
+}
+
+void
+meta_wayland_inputfd_evdev_device_notify (MetaWaylandInputFdEvdevDevice *device,
+                                          struct wl_resource            *resource)
+{
+  zwp_inputfd_device_evdev_v1_send_name (resource, device->name);
+  zwp_inputfd_device_evdev_v1_send_usb_id (resource, device->vid, device->pid);
+  zwp_inputfd_device_evdev_v1_send_done (resource);
+}
+
+static void
+device_open_fd (MetaWaylandInputFdEvdevDevice *device)
+{
+  MetaBackend *backend;
+  MetaLauncher *launcher;
+  const char *path;
+
+  g_assert (device->fd == -1);
+  path = g_udev_device_get_device_file (device->udev_device);
+
+  backend = meta_get_backend ();
+  if (!META_IS_BACKEND_NATIVE (backend))
+    return;
+
+  launcher = meta_backend_native_get_launcher (META_BACKEND_NATIVE (backend));
+  device->fd = meta_launcher_open_restricted (launcher, path, NULL);
+}
+
+static void
+device_close_fd (MetaWaylandInputFdEvdevDevice *device)
+{
+  MetaBackend *backend;
+  MetaLauncher *launcher;
+
+  ioctl(device->fd, EVIOCREVOKE, NULL);
+
+  backend = meta_get_backend ();
+  if (!META_IS_BACKEND_NATIVE (backend))
+    return;
+
+  launcher = meta_backend_native_get_launcher (META_BACKEND_NATIVE (backend));
+  meta_launcher_close_restricted (launcher, device->fd);
+  device->fd = -1;
+}
+
+static void
+meta_wayland_inputfd_evdev_device_broadcast_focus_in (MetaWaylandInputFdEvdevDevice *device,
+                                                      MetaWaylandSurface            *surface,
+                                                      uint32_t                       serial)
+{
+  struct wl_resource *resource;
+
+  wl_resource_for_each (resource, &device->focus_resource_list)
+    {
+      zwp_inputfd_device_evdev_v1_send_focus_in (resource,
+                                                 serial,
+                                                 device->fd,
+                                                 surface->resource);
+    }
+}
+
+static void
+meta_wayland_inputfd_evdev_device_broadcast_focus_out (MetaWaylandInputFdEvdevDevice *device)
+{
+  struct wl_resource *resource;
+
+  wl_resource_for_each (resource, &device->focus_resource_list)
+    {
+      zwp_inputfd_device_evdev_v1_send_focus_out (resource);
+    }
+}
+
+void
+meta_wayland_inputfd_evdev_device_set_focus (MetaWaylandInputFdEvdevDevice *device,
+                                             MetaWaylandSurface            *surface)
+{
+  if (device->focus_surface == surface)
+    return;
+
+  if (device->focus_surface != NULL)
+    {
+      struct wl_list *focus_resources = &device->focus_resource_list;
+
+      if (!wl_list_empty (focus_resources))
+        {
+          meta_wayland_inputfd_evdev_device_broadcast_focus_out (device);
+          move_resources (&device->resource_list, &device->focus_resource_list);
+        }
+
+      wl_list_remove (&device->focus_surface_listener.link);
+      device->focus_surface = NULL;
+      device_close_fd (device);
+    }
+
+  if (surface != NULL)
+    device_open_fd (device);
+
+  if (surface != NULL && device->fd >= 0)
+    {
+      struct wl_client *client;
+
+      device->focus_surface = surface;
+      wl_resource_add_destroy_listener (device->focus_surface->resource,
+                                        &device->focus_surface_listener);
+
+      client = wl_resource_get_client (device->focus_surface->resource);
+      move_resources_for_client (&device->focus_resource_list,
+                                 &device->resource_list, client);
+
+      if (!wl_list_empty (&device->focus_resource_list))
+        {
+          struct wl_display *display = wl_client_get_display (client);
+          uint32_t serial = wl_display_next_serial (display);
+
+          meta_wayland_inputfd_evdev_device_broadcast_focus_in (device,
+                                                                surface,
+                                                                serial);
+        }
+    }
+}

src/wayland/meta-wayland-inputfd-evdev-device.h

@@ -0,0 +1,64 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2018 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+#ifndef META_WAYLAND_INPUTFD_EVDEV_DEVICE_H
+#define META_WAYLAND_INPUTFD_EVDEV_DEVICE_H
+
+#include <glib.h>
+#include <gudev/gudev.h>
+#include <wayland-server.h>
+
+#include "meta-wayland-types.h"
+
+struct _MetaWaylandInputFdEvdevDevice
+{
+  GUdevDevice *udev_device;
+
+  struct wl_list resource_list;
+  struct wl_list focus_resource_list;
+
+  MetaWaylandSurface *focus_surface;
+  struct wl_listener focus_surface_listener;
+
+  const gchar *name;
+  uint32_t vid;
+  uint32_t pid;
+
+  int fd;
+};
+
+MetaWaylandInputFdEvdevDevice *
+     meta_wayland_inputfd_evdev_device_new  (MetaWaylandInputFdSeat *seat,
+                                             GUdevDevice            *device);
+void meta_wayland_inputfd_evdev_device_free (MetaWaylandInputFdEvdevDevice *evdev_device);
+
+
+struct wl_resource *
+     meta_wayland_inputfd_evdev_device_create_new_resource (MetaWaylandInputFdEvdevDevice *device,
+                                                            struct wl_client              *client,
+                                                            struct wl_resource            *seat_resource,
+                                                            uint32_t                       id);
+void meta_wayland_inputfd_evdev_device_set_focus (MetaWaylandInputFdEvdevDevice *device,
+                                                  MetaWaylandSurface            *surface);
+
+void meta_wayland_inputfd_evdev_device_notify (MetaWaylandInputFdEvdevDevice *device,
+                                               struct wl_resource            *resource);
+
+#endif /* META_WAYLAND_INPUTFD_EVDEV_DEVICE_H */

src/wayland/meta-wayland-inputfd-manager.c

@@ -0,0 +1,128 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2018 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+#include "config.h"
+
+#include "inputfd-unstable-v1-server-protocol.h"
+#include "wayland/meta-wayland-inputfd-manager.h"
+#include "wayland/meta-wayland-inputfd-seat.h"
+#include "wayland/meta-wayland-private.h"
+
+static void
+unbind_resource (struct wl_resource *resource)
+{
+  wl_list_remove (wl_resource_get_link (resource));
+}
+
+static void
+inputfd_manager_get_seat_evdev (struct wl_client   *client,
+                                struct wl_resource *resource,
+                                uint32_t            id,
+                                struct wl_resource *seat_resource)
+{
+  MetaWaylandInputFdManager *manager = wl_resource_get_user_data (resource);
+  MetaWaylandSeat *seat = wl_resource_get_user_data (seat_resource);
+  MetaWaylandInputFdSeat *inputfd_seat;
+
+  inputfd_seat = meta_wayland_inputfd_manager_ensure_seat (manager, seat);
+  meta_wayland_inputfd_seat_create_new_evdev_resource (inputfd_seat, client,
+                                                       resource, id);
+}
+
+static void
+inputfd_manager_destroy (struct wl_client   *client,
+                         struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static const struct zwp_inputfd_manager_v1_interface inputfd_manager_interface = {
+  inputfd_manager_get_seat_evdev,
+  inputfd_manager_destroy
+};
+
+static void
+bind_inputfd_manager (struct wl_client *client,
+		      void             *data,
+		      uint32_t          version,
+		      uint32_t          id)
+{
+  MetaWaylandCompositor *compositor = data;
+  MetaWaylandInputFdManager *manager = compositor->inputfd_manager;
+  struct wl_resource *resource;
+
+  resource = wl_resource_create (client, &zwp_inputfd_manager_v1_interface,
+                                 MIN (version, 1), id);
+  wl_resource_set_implementation (resource, &inputfd_manager_interface,
+                                  manager, unbind_resource);
+  wl_resource_set_user_data (resource, manager);
+  wl_list_insert (&manager->resource_list,
+                  wl_resource_get_link (resource));
+}
+
+static MetaWaylandInputFdManager *
+meta_wayland_inputfd_manager_new (MetaWaylandCompositor *compositor)
+{
+  MetaWaylandInputFdManager *manager;
+
+  manager = g_slice_new0 (MetaWaylandInputFdManager);
+  manager->compositor = compositor;
+  manager->wl_display = compositor->wayland_display;
+  manager->seats = g_hash_table_new_full (NULL, NULL, NULL,
+					  (GDestroyNotify) meta_wayland_inputfd_seat_free);
+  wl_list_init (&manager->resource_list);
+
+  wl_global_create (manager->wl_display,
+                    &zwp_inputfd_manager_v1_interface,
+                    META_ZWP_INPUTFD_V1_VERSION,
+                    compositor, bind_inputfd_manager);
+
+  return manager;
+}
+
+void
+meta_wayland_inputfd_manager_init (MetaWaylandCompositor *compositor)
+{
+  compositor->inputfd_manager = meta_wayland_inputfd_manager_new (compositor);
+}
+
+void
+meta_wayland_inputfd_manager_free (MetaWaylandInputFdManager *manager)
+{
+  g_hash_table_destroy (manager->seats);
+  g_slice_free (MetaWaylandInputFdManager, manager);
+}
+
+MetaWaylandInputFdSeat *
+meta_wayland_inputfd_manager_ensure_seat (MetaWaylandInputFdManager *manager,
+                                          MetaWaylandSeat           *seat)
+{
+  MetaWaylandInputFdSeat *inputfd_seat;
+
+  inputfd_seat = g_hash_table_lookup (manager->seats, seat);
+
+  if (!inputfd_seat)
+    {
+      inputfd_seat = meta_wayland_inputfd_seat_new (manager, seat);
+      g_hash_table_insert (manager->seats, seat, inputfd_seat);
+    }
+
+  return inputfd_seat;
+}

src/wayland/meta-wayland-inputfd-manager.h

@@ -0,0 +1,47 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2018 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+
+#ifndef META_WAYLAND_INPUTFD_MANAGER_H
+#define META_WAYLAND_INPUTFD_MANAGER_H
+
+#include <wayland-server.h>
+
+#include <glib.h>
+
+#include "meta-wayland-types.h"
+
+struct _MetaWaylandInputFdManager
+{
+  MetaWaylandCompositor *compositor;
+  struct wl_display *wl_display;
+  struct wl_list resource_list;
+
+  GHashTable *seats;
+};
+
+void     meta_wayland_inputfd_manager_init (MetaWaylandCompositor    *compositor);
+void     meta_wayland_inputfd_manager_free (MetaWaylandInputFdManager *manager);
+
+MetaWaylandInputFdSeat *
+         meta_wayland_inputfd_manager_ensure_seat (MetaWaylandInputFdManager *manager,
+						   MetaWaylandSeat           *seat);
+
+#endif /* META_WAYLAND_INPUTFD_MANAGER_H */

src/wayland/meta-wayland-inputfd-seat.c

@@ -0,0 +1,201 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2018 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+#include "config.h"
+
+#include "inputfd-unstable-v1-server-protocol.h"
+#include "wayland/meta-wayland-inputfd-seat.h"
+#include "wayland/meta-wayland-inputfd-evdev-device.h"
+
+static void
+unbind_resource (struct wl_resource *resource)
+{
+  wl_list_remove (wl_resource_get_link (resource));
+}
+
+static void
+notify_evdev_device_added (MetaWaylandInputFdSeat        *seat,
+                           MetaWaylandInputFdEvdevDevice *evdev_device,
+                           struct wl_resource            *seat_resource)
+{
+  struct wl_resource *resource;
+  struct wl_client *client;
+
+  client = wl_resource_get_client (seat_resource);
+  resource = meta_wayland_inputfd_evdev_device_create_new_resource (evdev_device,
+                                                                    client,
+                                                                    seat_resource,
+                                                                    0);
+  zwp_inputfd_seat_evdev_v1_send_device_added (seat_resource, resource);
+}
+
+static void
+broadcast_evdev_device_added (MetaWaylandInputFdSeat        *seat,
+                              MetaWaylandInputFdEvdevDevice *evdev_device)
+{
+  struct wl_resource *seat_resource;
+
+  wl_resource_for_each (seat_resource, &seat->evdev_seat_resources)
+    {
+      notify_evdev_device_added (seat, evdev_device, seat_resource);
+    }
+}
+
+static void
+check_add_device (MetaWaylandInputFdSeat *inputfd_seat,
+                  GUdevDevice            *device)
+{
+  MetaWaylandInputFdEvdevDevice *evdev_device;
+
+  evdev_device = meta_wayland_inputfd_evdev_device_new (inputfd_seat,
+                                                        device);
+  if (evdev_device)
+    {
+      g_hash_table_insert (inputfd_seat->evdev_devices,
+                           (gpointer) g_udev_device_get_sysfs_path (device),
+                           evdev_device);
+      broadcast_evdev_device_added (inputfd_seat, evdev_device);
+      return;
+    }
+}
+
+static void
+remove_device (MetaWaylandInputFdSeat *inputfd_seat,
+               GUdevDevice            *device)
+{
+  g_hash_table_remove (inputfd_seat->evdev_devices,
+                       g_udev_device_get_sysfs_path (device));
+}
+
+static void
+udev_event_cb (GUdevClient            *client,
+               char                   *action,
+               GUdevDevice            *device,
+               MetaWaylandInputFdSeat *seat)
+{
+  if (g_strcmp0 (action, "add") == 0)
+    check_add_device (seat, device);
+  else if (g_strcmp0 (action, "remove") == 0)
+    remove_device (seat, device);
+}
+
+MetaWaylandInputFdSeat *
+meta_wayland_inputfd_seat_new (MetaWaylandInputFdManager *manager,
+                               MetaWaylandSeat           *seat)
+{
+  const char * const subsystems[] = { "input", NULL };
+  MetaWaylandInputFdSeat *inputfd_seat;
+  GList *devices;
+
+  inputfd_seat = g_slice_new0 (MetaWaylandInputFdSeat);
+  wl_list_init (&inputfd_seat->evdev_seat_resources);
+  inputfd_seat->evdev_devices =
+    g_hash_table_new_full (g_str_hash, g_str_equal, NULL,
+                           (GDestroyNotify) meta_wayland_inputfd_evdev_device_free);
+
+  inputfd_seat->udev_client = g_udev_client_new (subsystems);
+  g_signal_connect (inputfd_seat->udev_client, "uevent",
+                    G_CALLBACK (udev_event_cb), inputfd_seat);
+
+  devices = g_udev_client_query_by_subsystem (inputfd_seat->udev_client,
+                                              subsystems[0]);
+  while (devices)
+    {
+      GUdevDevice *device = devices->data;
+
+      check_add_device (inputfd_seat, device);
+      g_object_unref (device);
+      devices = g_list_delete_link (devices, devices);
+    }
+
+  return inputfd_seat;
+}
+
+void
+meta_wayland_inputfd_seat_free (MetaWaylandInputFdSeat *inputfd_seat)
+{
+  g_hash_table_destroy (inputfd_seat->evdev_devices);
+
+  g_signal_handlers_disconnect_by_func (inputfd_seat->udev_client,
+                                        udev_event_cb, inputfd_seat);
+  g_object_unref (inputfd_seat->udev_client);
+
+  g_slice_free (MetaWaylandInputFdSeat, inputfd_seat);
+}
+
+static void
+notify_evdev_devices (MetaWaylandInputFdSeat *seat,
+                      struct wl_resource     *seat_resource)
+{
+  MetaWaylandInputFdEvdevDevice *device;
+  GHashTableIter iter;
+
+  g_hash_table_iter_init (&iter, seat->evdev_devices);
+
+  while (g_hash_table_iter_next (&iter, NULL, (void **) &device))
+    {
+      notify_evdev_device_added (seat, device, seat_resource);
+    }
+}
+
+static void
+inputfd_seat_evdev_destroy (struct wl_client   *client,
+                            struct wl_resource *resource)
+{
+  wl_resource_destroy (resource);
+}
+
+static const struct zwp_inputfd_seat_evdev_v1_interface inputfd_seat_evdev_interface = {
+  inputfd_seat_evdev_destroy
+};
+
+struct wl_resource *
+meta_wayland_inputfd_seat_create_new_evdev_resource (MetaWaylandInputFdSeat *seat,
+                                                     struct wl_client       *client,
+                                                     struct wl_resource     *manager_resource,
+                                                     uint32_t                id)
+{
+  struct wl_resource *resource;
+
+  resource = wl_resource_create (client, &zwp_inputfd_seat_evdev_v1_interface,
+                                 wl_resource_get_version (manager_resource),
+                                 id);
+  wl_resource_set_implementation (resource, &inputfd_seat_evdev_interface,
+                                  seat, unbind_resource);
+  wl_resource_set_user_data (resource, seat);
+  wl_list_insert (&seat->evdev_seat_resources, wl_resource_get_link (resource));
+
+  notify_evdev_devices (seat, resource);
+
+  return resource;
+}
+
+void
+meta_wayland_inputfd_seat_set_focus (MetaWaylandInputFdSeat *seat,
+                                     MetaWaylandSurface     *surface)
+{
+  MetaWaylandInputFdEvdevDevice *device;
+  GHashTableIter iter;
+
+  g_hash_table_iter_init (&iter, seat->evdev_devices);
+
+  while (g_hash_table_iter_next (&iter, NULL, (void **) &device))
+    meta_wayland_inputfd_evdev_device_set_focus (device, surface);
+}

src/wayland/meta-wayland-inputfd-seat.h

@@ -0,0 +1,51 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2018 Red Hat
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Author: Carlos Garnacho <carlosg@gnome.org>
+ */
+#ifndef META_WAYLAND_INPUTFD_SEAT_H
+#define META_WAYLAND_INPUTFD_SEAT_H
+
+#include <glib.h>
+#include <gudev/gudev.h>
+#include <wayland-server.h>
+
+#include "meta-wayland-types.h"
+
+struct _MetaWaylandInputFdSeat
+{
+  GUdevClient *udev_client;
+  struct wl_list evdev_seat_resources;
+  GHashTable *evdev_devices;
+};
+
+MetaWaylandInputFdSeat *
+     meta_wayland_inputfd_seat_new  (MetaWaylandInputFdManager *manager,
+                                     MetaWaylandSeat           *seat);
+void meta_wayland_inputfd_seat_free (MetaWaylandInputFdSeat *inputfd_seat);
+
+struct wl_resource *
+     meta_wayland_inputfd_seat_create_new_evdev_resource (MetaWaylandInputFdSeat *seat,
+                                                          struct wl_client       *client,
+                                                          struct wl_resource     *resource,
+                                                          uint32_t                id);
+
+void meta_wayland_inputfd_seat_set_focus (MetaWaylandInputFdSeat *seat,
+                                          MetaWaylandSurface     *surface);
+
+#endif /* META_WAYLAND_INPUTFD_SEAT_H */

src/wayland/meta-wayland-private.h

@@ -26,6 +26,7 @@
 #include "clutter/clutter.h"
 #include "core/window-private.h"
 #include "meta/meta-cursor-tracker.h"
+#include "wayland/meta-wayland-inputfd-manager.h"
 #include "wayland/meta-wayland-pointer-gestures.h"
 #include "wayland/meta-wayland-seat.h"
 #include "wayland/meta-wayland-surface.h"
@@ -85,6 +86,7 @@ struct _MetaWaylandCompositor
 
   MetaWaylandSeat *seat;
   MetaWaylandTabletManager *tablet_manager;
+  MetaWaylandInputFdManager *inputfd_manager;
 
   GHashTable *scheduled_surface_associations;
 };

src/wayland/meta-wayland-seat.c

@@ -25,6 +25,7 @@
 
 #include "wayland/meta-wayland-data-device.h"
 #include "wayland/meta-wayland-data-device-primary-legacy.h"
+#include "wayland/meta-wayland-inputfd-seat.h"
 #include "wayland/meta-wayland-private.h"
 #include "wayland/meta-wayland-tablet-seat.h"
 #include "wayland/meta-wayland-versions.h"
@@ -176,8 +177,17 @@ meta_wayland_seat_set_capabilities (MetaWaylandSeat *seat,
         meta_display_sync_wayland_input_focus (display);
     }
   else if (CAPABILITY_DISABLED (prev_flags, flags, WL_SEAT_CAPABILITY_KEYBOARD))
+    {
+      MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
+      MetaWaylandInputFdSeat *inputfd_seat;
+
       meta_wayland_keyboard_disable (seat->keyboard);
 
+      inputfd_seat = meta_wayland_inputfd_manager_ensure_seat (compositor->inputfd_manager,
+                                                               seat);
+      meta_wayland_inputfd_seat_set_focus (inputfd_seat, NULL);
+    }
+
   if (CAPABILITY_ENABLED (prev_flags, flags, WL_SEAT_CAPABILITY_TOUCH))
     meta_wayland_touch_enable (seat->touch);
   else if (CAPABILITY_DISABLED (prev_flags, flags, WL_SEAT_CAPABILITY_TOUCH))
@@ -428,6 +438,7 @@ meta_wayland_seat_set_input_focus (MetaWaylandSeat    *seat,
                                    MetaWaylandSurface *surface)
 {
   MetaWaylandTabletSeat *tablet_seat;
+  MetaWaylandInputFdSeat *inputfd_seat;
   MetaWaylandCompositor *compositor = meta_wayland_compositor_get_default ();
 
   if (meta_wayland_seat_has_keyboard (seat))
@@ -443,6 +454,10 @@ meta_wayland_seat_set_input_focus (MetaWaylandSeat    *seat,
 
   meta_wayland_text_input_set_focus (seat->text_input, surface);
   meta_wayland_gtk_text_input_set_focus (seat->gtk_text_input, surface);
+
+  inputfd_seat = meta_wayland_inputfd_manager_ensure_seat (compositor->inputfd_manager,
+                                                           seat);
+  meta_wayland_inputfd_seat_set_focus (inputfd_seat, surface);
 }
 
 gboolean

src/wayland/meta-wayland-types.h

@@ -61,4 +61,8 @@ typedef struct _MetaWaylandWindowConfiguration MetaWaylandWindowConfiguration;
 
 typedef struct _MetaWaylandPointerClient MetaWaylandPointerClient;
 
+typedef struct _MetaWaylandInputFdManager MetaWaylandInputFdManager;
+typedef struct _MetaWaylandInputFdSeat MetaWaylandInputFdSeat;
+typedef struct _MetaWaylandInputFdEvdevDevice MetaWaylandInputFdEvdevDevice;
+
 #endif

src/wayland/meta-wayland-versions.h

@@ -55,5 +55,6 @@
 #define META_GTK_TEXT_INPUT_VERSION         1
 #define META_ZWP_TEXT_INPUT_V3_VERSION      1
 #define META_WP_VIEWPORTER_VERSION          1
+#define META_ZWP_INPUTFD_V1_VERSION         1
 
 #endif

src/wayland/meta-wayland.c

@@ -438,6 +438,7 @@ meta_wayland_compositor_setup (MetaWaylandCompositor *wayland_compositor)
   meta_wayland_surface_inhibit_shortcuts_dialog_init ();
   meta_wayland_text_input_init (compositor);
   meta_wayland_gtk_text_input_init (compositor);
+  meta_wayland_inputfd_manager_init (compositor);
 
   /* Xwayland specific protocol, needs to be filtered out for all other clients */
   if (meta_xwayland_grab_keyboard_init (compositor))