sysdeps/mach/hurd/kernel-features.h

   1 /* Set flags signalling availability of certain operating system features.
   2    Copyright (C) 2007 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* This file can define __ASSUME_* macros checked by certain source files.
  21    Almost none of these are used outside of sysdeps/unix/sysv/linux code.
  22    But those referring to POSIX-level features like O_* flags can be.  */
  23
  24 #include <fcntl.h>
  25
  26 /* If a system defines the O_CLOEXEC constant but it is sometimes ignored,
  27    it must override this file to define __ASSUME_O_CLOEXEC conditionally
  28    (or not at all) to indicate when O_CLOEXEC actually works.  */
  29 #ifdef O_CLOEXEC
  30 # define __ASSUME_O_CLOEXEC     1
  31 #endif