+void updwtmp(const char *, const struct utmp *);
+
+#define _PATH_UTMP "/dev/null/utmp"
+#define _PATH_WTMP "/dev/null/wtmp"
+
+#define UTMP_FILE _PATH_UTMP
+#define WTMP_FILE _PATH_WTMP
+#define UTMP_FILENAME _PATH_UTMP
+#define WTMP_FILENAME _PATH_WTMP