From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Subject: [PATCH] hurd: Fix F_*LK* fcntl with __USE_FILE_OFFSET64

2014-08-31  Samuel Thibault  <samuel.thibault@ens-lyon.org>

	struct flock64 uses 64bit values.  This introduces other values for
	F_GETLK, F_SETLK, F_SETLKW to distinguish between both.
	* sysdeps/mach/hurd/bits/fcntl.h (F_GETLK64, F_SETLK64, F_SETLKW64): New
	macros
	[__USE_FILE_OFFSET64] (F_GETLK, F_SETLK, F_SETLKW): Define to F_GETLK64,
	F_SETLK64, F_SETLKW64, respectively.
	* sysdeps/mach/hurd/f_setlk.c: New file.
	* sysdeps/mach/hurd/f_setlk.h: New file.
	* sysdeps/mach/hurd/fcntl.c (__libc_fcntl): Include "f_setlk.h",
	make F_SETLK and F_SETLKW call __f_setlk instead of __flock.
	Handle F_GETLK64, F_SETLK64, F_SETLKW64 cases.
	* sysdeps/mach/hurd/Makefile (sysdeps_routines): Add f_setlk in
	io dir.

WARNING: this includes the ATOMIC change, do not submit that part.