+static void release_driver(void)
+{
+ connman_agent_driver_unregister(get_driver());
+}
+
+static void cancel_all_requests(struct connman_agent *agent)
+{
+ GList *list;
+
+ DBG("request %p pending %p", agent->pending, agent->queue);
+
+ if (agent->pending) {
+ if (agent->pending->call)
+ send_cancel_request(agent, agent->pending);
+
+ agent_finalize_pending(agent, NULL);
+ }
+
+ for (list = agent->queue; list; list = list->next) {
+ struct connman_agent_request *request = list->data;
+
+ if (!request)
+ continue;
+
+ request->callback(NULL, request->user_data);
+ agent_request_free(request);
+ }
+
+ g_list_free(agent->queue);
+ agent->queue = NULL;
+}
+
+void connman_agent_cancel(void *user_context)
+{
+ GHashTableIter iter;
+ gpointer key, value;
+ int err;
+
+ DBG("context %p", user_context);
+
+ g_hash_table_iter_init(&iter, agent_hash);
+ while (g_hash_table_iter_next(&iter, &key, &value)) {
+ GList *list, *next;
+ struct connman_agent *agent = value;
+
+ /*
+ * Cancel all the pending requests to a given agent and service
+ */
+ list = agent->queue;
+ while (list) {
+ struct connman_agent_request *request = list->data;
+
+ next = list->next;
+
+ if (request && request->user_context &&
+ request->user_context ==
+ user_context) {
+ DBG("cancel pending %p", request);
+
+ agent->queue = g_list_delete_link(agent->queue,
+ list);
+
+ request->callback(NULL, request->user_data);
+
+ agent_request_free(request);
+ }
+
+ list = next;
+ }
+
+ /*
+ * If there is a request from client to a given service,
+ * we need to cancel it.
+ */
+ if (agent->pending && agent->pending->user_context &&
+ agent->pending->user_context == user_context) {
+ DBG("cancel request %p", agent->pending);
+
+ if (agent->pending->call)
+ send_cancel_request(agent, agent->pending);
+
+ agent_finalize_pending(agent, NULL);
+
+ err = agent_send_next_request(agent);
+ if (err < 0 && err != -EBUSY)
+ DBG("send next request failed (%s/%d)",
+ strerror(-err), -err);
+ }
+ }
+}
+
+static void agent_unref_debug(struct connman_agent *agent,
+ const char *file, int line, const char *caller)
+{
+ DBG("%p ref %d by %s:%d:%s()", agent, agent->refcount - 1,
+ file, line, caller);
+
+ if (__sync_fetch_and_sub(&agent->refcount, 1) != 1)
+ return;
+
+ cancel_all_requests(agent);
+
+ g_free(agent->owner);
+ g_free(agent->path);
+
+ if (agent == default_agent) {
+ default_agent = NULL;
+ set_default_agent();
+ }
+
+ g_free(agent);
+}
+
+static void agent_release(struct connman_agent *agent, const char *interface)
+{
+ DBusMessage *message;
+
+ DBG("release agent %s %s", agent->owner, agent->path);
+
+ message = dbus_message_new_method_call(agent->owner, agent->path,
+ interface, "Release");
+ if (!message) {
+ connman_error("Couldn't allocate D-Bus message");
+ return;
+ }
+
+ dbus_message_set_no_reply(message, TRUE);
+ g_dbus_send_message(connection, message);
+}
+
+static void release_agents(void)
+{
+ GHashTableIter iter;
+ gpointer key, value;
+
+ g_hash_table_iter_init(&iter, agent_hash);
+ while (g_hash_table_iter_next(&iter, &key, &value))
+ agent_release(value, get_driver()->interface);
+}
+
+/**
+ * connman_agent_driver_unregister:
+ * @driver: Agent driver definition
+ *
+ * Remove a previously registered agent driver
+ */
+void connman_agent_driver_unregister(struct connman_agent_driver *driver)