+
+#define BUS_CONTAINER_DEPTH 128
+
+/* Defined by the specification as maximum size of an array in
+ * bytes */
+#define BUS_ARRAY_MAX_SIZE 67108864
+
+#define BUS_FDS_MAX 1024
+
+#define BUS_EXEC_ARGV_MAX 256
+
+bool interface_name_is_valid(const char *p);
+bool service_name_is_valid(const char *p);
+bool member_name_is_valid(const char *p);
+bool object_path_is_valid(const char *p);
+char *object_path_startswith(const char *a, const char *b);
+
+bool namespace_complex_pattern(const char *pattern, const char *value);
+bool path_complex_pattern(const char *pattern, const char *value);
+
+bool namespace_simple_pattern(const char *pattern, const char *value);
+bool path_simple_pattern(const char *pattern, const char *value);
+
+int bus_message_type_from_string(const char *s, uint8_t *u);
+const char *bus_message_type_to_string(uint8_t u);
+
+#define error_name_is_valid interface_name_is_valid
+
+int bus_ensure_running(sd_bus *bus);
+int bus_start_running(sd_bus *bus);
+int bus_next_address(sd_bus *bus);
+
+bool bus_pid_changed(sd_bus *bus);