int fchmodat(int, const char *, mode_t, int);
mode_t umask(mode_t);
int mkdir(const char *, mode_t);
-int mknod(const char *, mode_t, dev_t);
int mkfifo(const char *, mode_t);
int mkdirat(int, const char *, mode_t);
-int mknodat(int, const char *, mode_t, dev_t);
int mkfifoat(int, const char *, mode_t);
+#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+int mknod(const char *, mode_t, dev_t);
+int mknodat(int, const char *, mode_t, dev_t);
+#endif
+
int futimens(int, const struct timespec [2]);
int utimensat(int, const char *, const struct timespec [2], int);