Commit 73e8127d authored by Jonas Ådahl's avatar Jonas Ådahl Committed by Georges Basile Stavracas Neto

backends/native: Add udev abstraction layer

To be used to signal devices added, hotplugs and other udev events.
Currently the only event emitted is when a device is added.

GNOME/mutter#548
GNOME/mutter!525
parent 11e20055
......@@ -64,6 +64,7 @@ struct _MetaBackendNative
MetaBackend parent;
MetaLauncher *launcher;
MetaUdev *udev;
MetaBarrierManagerNative *barrier_manager;
};
......@@ -81,6 +82,7 @@ meta_backend_native_finalize (GObject *object)
{
MetaBackendNative *native = META_BACKEND_NATIVE (object);
g_clear_object (&native->udev);
meta_launcher_free (native->launcher);
G_OBJECT_CLASS (meta_backend_native_parent_class)->finalize (object);
......@@ -516,6 +518,8 @@ meta_backend_native_initable_init (GInitable *initable,
GCancellable *cancellable,
GError **error)
{
MetaBackendNative *native = META_BACKEND_NATIVE (initable);
if (!meta_is_stage_views_enabled ())
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
......@@ -523,6 +527,8 @@ meta_backend_native_initable_init (GInitable *initable,
return FALSE;
}
native->udev = meta_udev_new ();
return initable_parent_iface->init (initable, cancellable, error);
}
......@@ -585,6 +591,12 @@ meta_backend_native_get_launcher (MetaBackendNative *native)
return native->launcher;
}
MetaUdev *
meta_backend_native_get_udev (MetaBackendNative *native)
{
return native->udev;
}
gboolean
meta_activate_vt (int vt, GError **error)
{
......
......@@ -28,6 +28,7 @@
#include "backends/meta-backend-private.h"
#include "backends/native/meta-clutter-backend-native.h"
#include "backends/native/meta-launcher.h"
#include "backends/native/meta-udev.h"
#define META_TYPE_BACKEND_NATIVE (meta_backend_native_get_type ())
G_DECLARE_FINAL_TYPE (MetaBackendNative, meta_backend_native,
......@@ -41,4 +42,6 @@ void meta_backend_native_resume (MetaBackendNative *backend_native);
MetaLauncher * meta_backend_native_get_launcher (MetaBackendNative *native);
MetaUdev * meta_backend_native_get_udev (MetaBackendNative *native);
#endif /* META_BACKEND_NATIVE_H */
/*
* Copyright (C) 2018 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#include "config.h"
#include "backends/native/meta-udev.h"
enum
{
DEVICE_ADDED,
N_SIGNALS
};
static guint signals[N_SIGNALS];
struct _MetaUdev
{
GObject parent;
GUdevClient *gudev_client;
guint uevent_handler_id;
};
G_DEFINE_TYPE (MetaUdev, meta_udev, G_TYPE_OBJECT)
static void
on_uevent (GUdevClient *client,
const char *action,
GUdevDevice *device,
gpointer user_data)
{
MetaUdev *udev = META_UDEV (user_data);
if (!g_udev_device_get_device_file (device))
return;
if (g_str_equal (action, "add"))
g_signal_emit (udev, signals[DEVICE_ADDED], 0, device);
}
GUdevClient *
meta_udev_get_gudev_client (MetaUdev *udev)
{
return udev->gudev_client;
}
MetaUdev *
meta_udev_new (void)
{
return g_object_new (META_TYPE_UDEV, NULL);
}
static void
meta_udev_finalize (GObject *object)
{
MetaUdev *udev = META_UDEV (object);
g_signal_handler_disconnect (udev->gudev_client, udev->uevent_handler_id);
g_clear_object (&udev->gudev_client);
G_OBJECT_CLASS (meta_udev_parent_class)->finalize (object);
}
static void
meta_udev_init (MetaUdev *udev)
{
const char *subsystems[] = { "drm", NULL };
udev->gudev_client = g_udev_client_new (subsystems);
udev->uevent_handler_id = g_signal_connect (udev->gudev_client,
"uevent",
G_CALLBACK (on_uevent), udev);
}
static void
meta_udev_class_init (MetaUdevClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = meta_udev_finalize;
signals[DEVICE_ADDED] =
g_signal_new ("device-added",
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0, NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 1,
G_UDEV_TYPE_DEVICE);
}
/*
* Copyright (C) 2018 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
*/
#ifndef META_UDEV_H
#define META_UDEV_H
#include <gudev/gudev.h>
#define META_TYPE_UDEV (meta_udev_get_type ())
G_DECLARE_FINAL_TYPE (MetaUdev, meta_udev, META, UDEV, GObject)
GUdevClient * meta_udev_get_gudev_client (MetaUdev *udev);
MetaUdev * meta_udev_new (void);
#endif /* META_UDEV_H */
......@@ -599,6 +599,8 @@ if have_native_backend
'backends/native/meta-renderer-native.h',
'backends/native/meta-stage-native.c',
'backends/native/meta-stage-native.h',
'backends/native/meta-udev.c',
'backends/native/meta-udev.h',
]
endif
......
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