sysdeps/unix/sysv/linux/ia64/kernel-features.h

   1 /* Set flags signalling availability of kernel features based on given
   2    kernel version number.
   3    Copyright (C) 2010-2012 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _KERNEL_FEATURES_H
  21 #define _KERNEL_FEATURES_H 1
  22
  23 /* The late 2.5 kernels saw a lot of new CLONE_* flags.  Summarize
  24    their availability with one define.  */
  25 #if __LINUX_KERNEL_VERSION >= 132416
  26 # define __ASSUME_CLONE_THREAD_FLAGS   1
  27 #endif
  28
  29 /* The utimes syscall has been available for some architectures
  30    forever.  */
  31 #define __ASSUME_UTIMES 1
  32
  33 /* pselect/ppoll were introduced just after 2.6.16-rc1.  Due to the way
  34    the kernel versions are advertised we can only rely on 2.6.17 to have
  35    the code.  */
  36 #if __LINUX_KERNEL_VERSION >= 0x020616
  37 # define __ASSUME_PSELECT       1
  38 # define __ASSUME_PPOLL         1
  39 #endif
  40
  41 /* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.23.  */
  42 #if __LINUX_KERNEL_VERSION >= 0x020617
  43 # define __ASSUME_O_CLOEXEC     1
  44 #endif
  45
  46 /* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.27.  */
  47 #if __LINUX_KERNEL_VERSION >= 0x02061b
  48 # define __ASSUME_SOCK_CLOEXEC  1
  49 # define __ASSUME_IN_NONBLOCK   1
  50 # define __ASSUME_PIPE2         1
  51 # define __ASSUME_EVENTFD2      1
  52 # define __ASSUME_SIGNALFD4     1
  53 # define __ASSUME_DUP3          1
  54 #endif
  55
  56 /* Support for the accept4 syscall was added in 3.3.  */
  57 #if __LINUX_KERNEL_VERSION >= 0x030300
  58 # define __ASSUME_ACCEPT4       1
  59 #endif
  60
  61 #include_next <kernel-features.h>
  62
  63 #endif /* _KERNEL_FEATURES_H */