+int bus_start_running(sd_bus *bus);
+int bus_next_address(sd_bus *bus);
+
+int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m);
+
+int bus_rqueue_make_room(sd_bus *bus);
+
+bool bus_pid_changed(sd_bus *bus);
+
+char *bus_address_escape(const char *v);
+
+#define OBJECT_PATH_FOREACH_PREFIX(prefix, path) \
+ for (char *_slash = ({ strcpy((prefix), (path)); streq((prefix), "/") ? NULL : strrchr((prefix), '/'); }) ; \
+ _slash && !(_slash[(_slash) == (prefix)] = 0); \
+ _slash = streq((prefix), "/") ? NULL : strrchr((prefix), '/'))
+
+/* If we are invoking callbacks of a bus object, ensure unreffing the
+ * bus from the callback doesn't destroy the object we are working
+ * on */
+#define BUS_DONT_DESTROY(bus) \
+ _cleanup_bus_unref_ _unused_ sd_bus *_dont_destroy_##bus = sd_bus_ref(bus)