+typedef enum BusSlotType {
+ _BUS_SLOT_DISCONNECTED,
+ BUS_REPLY_CALLBACK,
+ BUS_FILTER_CALLBACK,
+ BUS_MATCH_CALLBACK,
+ BUS_NODE_CALLBACK,
+ BUS_NODE_ENUMERATOR,
+ BUS_NODE_VTABLE,
+ BUS_NODE_OBJECT_MANAGER,
+} BusSlotType;
+
+struct sd_bus_slot {
+ unsigned n_ref;
+ sd_bus *bus;
+ void *userdata;
+ BusSlotType type;
+ bool floating;
+
+ LIST_FIELDS(sd_bus_slot, slots);
+
+ union {
+ struct reply_callback reply_callback;
+ struct filter_callback filter_callback;
+ struct match_callback match_callback;
+ struct node_callback node_callback;
+ struct node_enumerator node_enumerator;
+ struct node_object_manager node_object_manager;
+ struct node_vtable node_vtable;
+ };
+};
+