[gdm/wip/multi-seat-2-30] Add ConsoleKit MultiSeat support. See CR #536355.

[Brian Cameron <bcameron src gnome org>]

commit fc855e3b285d304a716e5b50423132ea030392a7
Author: Brian Cameron <brian cameron oracle com>
Date:   Thu Dec 15 17:07:05 2011 -0600

    Add ConsoleKit MultiSeat support.  See CR #536355.

 daemon/gdm-dynamic-display.c |  246 ++++++++++++++++++++++++++++++++++++++++++
 daemon/gdm-dynamic-display.h |   60 ++++++++++
 2 files changed, 306 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-dynamic-display.c b/daemon/gdm-dynamic-display.c
new file mode 100644
index 0000000..6483150
--- /dev/null
+++ b/daemon/gdm-dynamic-display.c
@@ -0,0 +1,246 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Authors: halton huo sun com
+ * Copyright (C) 2009 Sun Microsystems, Inc.
+ *
+ * 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 <errno.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <pwd.h>
+#include <unistd.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <glib-object.h>
+
+#include "gdm-common.h"
+#include "gdm-display.h"
+#include "gdm-dynamic-display.h"
+
+#define GDM_DYNAMIC_DISPLAY_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GDM_TYPE_DYNAMIC_DISPLAY, GdmDynamicDisplayPrivate))
+
+struct _GdmDynamicDisplayPrivate
+{
+        gboolean removed;
+        gboolean do_respawn;
+};
+
+enum {
+        PROP_0,
+};
+
+static void     gdm_dynamic_display_class_init   (GdmDynamicDisplayClass *klass);
+static void     gdm_dynamic_display_init         (GdmDynamicDisplay      *display);
+static void     gdm_dynamic_display_finalize     (GObject                  *object);
+
+G_DEFINE_TYPE (GdmDynamicDisplay, gdm_dynamic_display, GDM_TYPE_DISPLAY)
+
+void
+gdm_dynamic_display_respawn (GdmDynamicDisplay *display, gboolean respawn)
+{
+        display->priv->do_respawn = respawn;
+        if (display->priv->do_respawn == TRUE)
+                g_debug ("GdmDynamicDisplay: Set respawn to TRUE.");
+        else
+                g_debug ("GdmDynamicDisplay: Set respawn to FALSE.");
+}
+
+void
+gdm_dynamic_display_removed (GdmDynamicDisplay *display)
+{
+        display->priv->removed = TRUE;
+}
+
+static gboolean
+gdm_dynamic_display_create_authority (GdmDisplay *display)
+{
+        g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE);
+
+        GDM_DISPLAY_CLASS (gdm_dynamic_display_parent_class)->create_authority (display);
+
+        return TRUE;
+}
+
+static gboolean
+gdm_dynamic_display_add_user_authorization (GdmDisplay *display,
+                                            const char *username,
+                                            char      **filename,
+                                            GError    **error)
+{
+        return GDM_DISPLAY_CLASS (gdm_dynamic_display_parent_class)->add_user_authorization (display, username, filename, error);
+}
+
+static gboolean
+gdm_dynamic_display_remove_user_authorization (GdmDisplay *display,
+                                               const char *username,
+                                               GError    **error)
+{
+        return GDM_DISPLAY_CLASS (gdm_dynamic_display_parent_class)->remove_user_authorization (display, username, error);
+}
+
+static gboolean
+gdm_dynamic_display_manage (GdmDisplay *display)
+{
+        g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE);
+
+        g_debug ("GdmDynamicDisplay: Manage dynamic display");
+
+        GDM_DISPLAY_CLASS (gdm_dynamic_display_parent_class)->manage (display);
+
+        return TRUE;
+}
+
+static gboolean
+gdm_dynamic_display_finish (GdmDisplay *display)
+{
+        int status;
+
+        g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE);
+
+        g_debug ("GdmDynamicDisplay: Finish dynamic display");
+
+        /* Don't call parent's finish since we don't ever
+        want to be put in the FINISHED state */
+
+        /* restart dynamic displays */
+        gdm_display_unmanage (display);
+
+        status = gdm_display_get_status (display);
+        if (GDM_DYNAMIC_DISPLAY (display)->priv->do_respawn == TRUE &&
+            GDM_DYNAMIC_DISPLAY(display)->priv->removed == FALSE) {
+                if (status != GDM_DISPLAY_FAILED) {
+                        g_debug ("Respawning...");
+                        gdm_display_manage (display);
+                } else {
+                        g_debug ("Display failed, not respawning...");
+                }
+        } else {
+                g_debug ("Not respawning...");
+        }
+        GDM_DYNAMIC_DISPLAY (display)->priv->do_respawn = FALSE;
+
+        return TRUE;
+}
+
+static gboolean
+gdm_dynamic_display_unmanage (GdmDisplay *display)
+{
+        g_return_val_if_fail (GDM_IS_DISPLAY (display), FALSE);
+
+        g_debug ("GdmDynamicDisplay: Unmanage dynamic display");
+
+        GDM_DISPLAY_CLASS (gdm_dynamic_display_parent_class)->unmanage (display);
+
+        return TRUE;
+}
+
+static void
+gdm_dynamic_display_set_property (GObject      *object,
+                                  guint         prop_id,
+                                  const GValue *value,
+                                  GParamSpec   *pspec)
+{
+        switch (prop_id) {
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gdm_dynamic_display_get_property (GObject    *object,
+                                  guint       prop_id,
+                                  GValue     *value,
+                                  GParamSpec *pspec)
+{
+        switch (prop_id) {
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
+gdm_dynamic_display_class_init (GdmDynamicDisplayClass *klass)
+{
+        GObjectClass    *object_class = G_OBJECT_CLASS (klass);
+        GdmDisplayClass *display_class = GDM_DISPLAY_CLASS (klass);
+
+        object_class->get_property = gdm_dynamic_display_get_property;
+        object_class->set_property = gdm_dynamic_display_set_property;
+        object_class->finalize = gdm_dynamic_display_finalize;
+
+        display_class->create_authority = gdm_dynamic_display_create_authority;
+        display_class->add_user_authorization = gdm_dynamic_display_add_user_authorization;
+        display_class->remove_user_authorization = gdm_dynamic_display_remove_user_authorization;
+        display_class->manage = gdm_dynamic_display_manage;
+        display_class->finish = gdm_dynamic_display_finish;
+        display_class->unmanage = gdm_dynamic_display_unmanage;
+
+        g_type_class_add_private (klass, sizeof (GdmDynamicDisplayPrivate));
+}
+
+static void
+gdm_dynamic_display_init (GdmDynamicDisplay *display)
+{
+        display->priv = GDM_DYNAMIC_DISPLAY_GET_PRIVATE (display);
+        display->priv->removed = FALSE;
+        display->priv->do_respawn = FALSE;
+}
+
+static void
+gdm_dynamic_display_finalize (GObject *object)
+{
+        GdmDynamicDisplay *display;
+
+        g_return_if_fail (object != NULL);
+        g_return_if_fail (GDM_IS_DYNAMIC_DISPLAY (object));
+
+        g_debug ("GdmDynamicDisplay: Finalize dynamic display");
+
+        display = GDM_DYNAMIC_DISPLAY (object);
+
+        g_return_if_fail (display->priv != NULL);
+
+        G_OBJECT_CLASS (gdm_dynamic_display_parent_class)->finalize (object);
+}
+
+GdmDisplay *
+gdm_dynamic_display_new (int display_number)
+{
+        GObject *object;
+        char    *x11_display;
+
+        x11_display = g_strdup_printf (":%d", display_number);
+        object = g_object_new (GDM_TYPE_DYNAMIC_DISPLAY,
+                               "x11-display-number", display_number,
+                               "x11-display-name", x11_display,
+                               NULL);
+        g_free (x11_display);
+
+        return GDM_DISPLAY (object);
+}
diff --git a/daemon/gdm-dynamic-display.h b/daemon/gdm-dynamic-display.h
new file mode 100644
index 0000000..0c53ea9
--- /dev/null
+++ b/daemon/gdm-dynamic-display.h
@@ -0,0 +1,60 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*-
+ *
+ * Authors: halton huo sun com
+ * Copyright (C) 2009 Sun Microsystems, Inc.
+ *
+ * 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 __GDM_DYNAMIC_DISPLAY_H
+#define __GDM_DYNAMIC_DISPLAY_H
+
+#include <glib-object.h>
+#include <dbus/dbus-glib.h>
+#include "gdm-display.h"
+
+G_BEGIN_DECLS
+
+#define GDM_TYPE_DYNAMIC_DISPLAY         (gdm_dynamic_display_get_type ())
+#define GDM_DYNAMIC_DISPLAY(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), GDM_TYPE_DYNAMIC_DISPLAY, GdmDynamicDisplay))
+#define GDM_DYNAMIC_DISPLAY_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), GDM_TYPE_DYNAMIC_DISPLAY, GdmDynamicDisplayClass))
+#define GDM_IS_DYNAMIC_DISPLAY(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), GDM_TYPE_DYNAMIC_DISPLAY))
+#define GDM_IS_DYNAMIC_DISPLAY_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), GDM_TYPE_DYNAMIC_DISPLAY))
+#define GDM_DYNAMIC_DISPLAY_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), GDM_TYPE_DYNAMIC_DISPLAY, GdmDynamicDisplayClass))
+
+typedef struct _GdmDynamicDisplayPrivate GdmDynamicDisplayPrivate;
+
+typedef struct
+{
+        GdmDisplay                parent;
+        GdmDynamicDisplayPrivate *priv;
+} GdmDynamicDisplay;
+
+typedef struct
+{
+        GdmDisplayClass   parent_class;
+
+} GdmDynamicDisplayClass;
+
+GType               gdm_dynamic_display_get_type                (void);
+GdmDisplay *        gdm_dynamic_display_new                     (int display_number);
+void                gdm_dynamic_display_respawn                 (GdmDynamicDisplay *display, gboolean respawn);
+void                gdm_dynamic_display_removed                 (GdmDynamicDisplay *display);
+
+G_END_DECLS
+
+#endif /* __GDM_DYNAMIC_DISPLAY_H */