#define F_SETFD 2 /* Set file descriptor flags. */
#define F_GETFL 3 /* Get file status flags. */
#define F_SETFL 4 /* Set file status flags. */
-#define F_GETLK 5 /* Get record locking info. */
-#define F_SETLK 6 /* Set record locking info (non-blocking). */
-#define F_SETLKW 7 /* Set record locking info (blocking). */
-
-/* XXX missing */
-#define F_GETLK64 5 /* Get record locking info. */
-#define F_SETLK64 6 /* Set record locking info (non-blocking). */
-#define F_SETLKW64 7 /* Set record locking info (blocking). */
+
+#ifndef __USE_FILE_OFFSET64
+# define F_GETLK 5 /* Get record locking info. */
+# define F_SETLK 6 /* Set record locking info (non-blocking). */
+# define F_SETLKW 7 /* Set record locking info (blocking). */
+#else
+# define F_GETLK F_GETLK64 /* Get record locking info. */
+# define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/
+# define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */
+#endif
+#define F_GETLK64 12 /* Get record locking info. */
+#define F_SETLK64 13 /* Set record locking info (non-blocking). */
+#define F_SETLKW64 14 /* Set record locking info (blocking). */
#if defined __USE_BSD || defined __USE_XOPEN2K
# define F_SETOWN 8 /* Get owner of socket (receiver of SIGIO). */