#define NOTIFY_FD_MAX 768
#define NOTIFY_BUFFER_MAX PIPE_BUF
+
+#ifdef HAVE_SPLIT_USR
+#define _CONF_PATHS_SPLIT_USR(n) "/lib/" n "\0"
+#else
+#define _CONF_PATHS_SPLIT_USR(n)
+#endif
+
+/* Return a nulstr for a standard cascade of configuration paths,
+ * suitable to pass to conf_files_list_nulstr() or config_parse_many()
+ * to implement drop-in directories for extending configuration
+ * files. */
+#define CONF_PATHS_NULSTR(n) \
+ "/etc/" n "\0" \
+ "/run/" n "\0" \
+ "/usr/local/lib/" n "\0" \
+ "/usr/lib/" n "\0" \
+ _CONF_PATHS_SPLIT_USR(n)