From 5fbe6727c495cfd454c488ffd76af2dbadd71af0 Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Mon, 12 Oct 2009 19:15:48 -0400
Subject: [PATCH 05/21] Add a "Stopping" property

The Stopping property is readonly and set to TRUE during a
restart or stop operation. This is intended for e.g. gdm to
not permit new logins while a restart is underway.
---
 src/ck-manager.c                           |   95 +++++++++++++++++++++++++++-
 src/org.freedesktop.ConsoleKit.Manager.xml |   10 +++
 2 files changed, 102 insertions(+), 3 deletions(-)

diff --git a/src/ck-manager.c b/src/ck-manager.c
index fdc290a..a8bfca4 100644
--- a/src/ck-manager.c
+++ b/src/ck-manager.c
@@ -85,6 +85,7 @@ struct CkManagerPrivate
         GTimeVal         system_idle_since_hint;
 
         gboolean         restart;
+        gboolean         stopping;
 };
 
 enum {
@@ -96,9 +97,23 @@ enum {
 
 static guint signals [LAST_SIGNAL] = { 0, };
 
-static void     ck_manager_class_init  (CkManagerClass *klass);
-static void     ck_manager_init        (CkManager      *manager);
-static void     ck_manager_finalize    (GObject        *object);
+enum {
+        PROP_0,
+        PROP_STOPPING
+};
+
+static void     ck_manager_class_init   (CkManagerClass *klass);
+static void     ck_manager_init         (CkManager      *manager);
+static void     ck_manager_finalize     (GObject        *object);
+static void     ck_manager_get_property (GObject        *object,
+                                         guint           prop_id,
+                                         GValue         *value,
+                                         GParamSpec     *pspec);
+static void     ck_manager_set_property (GObject        *object,
+                                         guint           prop_id,
+                                         const GValue   *value,
+                                         GParamSpec     *pspec);
+
 
 static gpointer manager_object = NULL;
 
@@ -1054,6 +1069,22 @@ out:
 #endif
 
 static void
+ck_manager_set_stopping (CkManager *manager,
+                         gboolean   stopping)
+{
+        if (manager->priv->stopping != stopping) {
+                manager->priv->stopping = stopping;
+                g_object_notify (G_OBJECT (manager), "stopping");
+        }
+}
+
+static void
+cleanup_after_stop (CkManager *manager)
+{
+        ck_manager_set_stopping (manager, FALSE);
+}
+
+static void
 do_stop (CkManager             *manager,
          DBusGMethodInvocation *context)
 {
@@ -1081,6 +1112,8 @@ do_stop (CkManager             *manager,
                 g_error_free (new_error);
 
                 g_error_free (error);
+
+                cleanup_after_stop (manager);
         } else {
                 dbus_g_method_return (context);
         }
@@ -1092,6 +1125,21 @@ restart_or_stop (CkManager             *manager,
 {
         const char *action;
 
+        if (manager->priv->stopping) {
+                GError *error;
+
+                error = g_error_new (CK_MANAGER_ERROR,
+                                     CK_MANAGER_ERROR_GENERAL,
+                                     "Stop in progress");
+                dbus_g_method_return_error (context, error);
+                g_error_free (error);
+                g_debug ("Stop in progress");
+
+                return FALSE;
+        }
+
+        ck_manager_set_stopping (manager, TRUE);
+
         if (get_system_num_users (manager) > 1) {
                 if (manager->priv->restart) {
                         action = "org.freedesktop.consolekit.system.restart-multiple-users";
@@ -2236,6 +2284,8 @@ ck_manager_class_init (CkManagerClass *klass)
 {
         GObjectClass   *object_class = G_OBJECT_CLASS (klass);
 
+        object_class->set_property = ck_manager_set_property;
+        object_class->get_property = ck_manager_get_property;
         object_class->finalize = ck_manager_finalize;
 
         signals [SEAT_ADDED] =
@@ -2269,6 +2319,14 @@ ck_manager_class_init (CkManagerClass *klass)
                               G_TYPE_NONE,
                               1, G_TYPE_BOOLEAN);
 
+        g_object_class_install_property (object_class,
+                                         PROP_STOPPING,
+                                         g_param_spec_boolean ("stopping",
+                                                               NULL,
+                                                               NULL,
+                                                               FALSE,
+                                                               G_PARAM_READABLE));
+
         dbus_g_object_type_install_info (CK_TYPE_MANAGER, &dbus_glib_ck_manager_object_info);
         dbus_g_error_domain_register (CK_MANAGER_ERROR, NULL, CK_MANAGER_TYPE_ERROR);
 
@@ -2477,6 +2535,37 @@ ck_manager_init (CkManager *manager)
 }
 
 static void
+ck_manager_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
+ck_manager_get_property (GObject    *object,
+                         guint       prop_id,
+                         GValue     *value,
+                         GParamSpec *pspec)
+{
+        CkManager *manager = CK_MANAGER (object);
+
+        switch (prop_id) {
+        case PROP_STOPPING:
+                g_value_set_boolean (value, manager->priv->stopping);
+                break;
+        default:
+                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+                break;
+        }
+}
+
+static void
 ck_manager_finalize (GObject *object)
 {
         CkManager *manager;
diff --git a/src/org.freedesktop.ConsoleKit.Manager.xml b/src/org.freedesktop.ConsoleKit.Manager.xml
index 1375174..7bb475d 100644
--- a/src/org.freedesktop.ConsoleKit.Manager.xml
+++ b/src/org.freedesktop.ConsoleKit.Manager.xml
@@ -354,6 +354,16 @@
       </doc:doc>
     </method>
 
+    <property name="Stopping" type="b" access="read">
+      <doc:doc>
+        <doc:description>
+          <doc:para>
+            Set to TRUE when a restart of stop operation is underway.
+          </doc:para>
+        </doc:description>
+      </doc:doc>
+    </property>
+
     <signal name="SeatAdded">
       <arg name="sid" type="o">
         <doc:doc>
-- 
1.6.5.rc2