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/* Set flags signalling availability of kernel features based on given
kernel version number.
Copyright (C) 2010-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#ifndef _KERNEL_FEATURES_H
#define _KERNEL_FEATURES_H 1
/* The late 2.5 kernels saw a lot of new CLONE_* flags. Summarize
their availability with one define. */
#if __LINUX_KERNEL_VERSION >= 132416
# define __ASSUME_CLONE_THREAD_FLAGS 1
#endif
/* The utimes syscall has been available for some architectures
forever. */
#define __ASSUME_UTIMES 1
/* pselect/ppoll were introduced just after 2.6.16-rc1. Due to the way
the kernel versions are advertised we can only rely on 2.6.17 to have
the code. */
#if __LINUX_KERNEL_VERSION >= 0x020616
# define __ASSUME_PSELECT 1
# define __ASSUME_PPOLL 1
#endif
/* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.23. */
#if __LINUX_KERNEL_VERSION >= 0x020617
# define __ASSUME_O_CLOEXEC 1
#endif
/* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.27. */
#if __LINUX_KERNEL_VERSION >= 0x02061b
# define __ASSUME_SOCK_CLOEXEC 1
# define __ASSUME_IN_NONBLOCK 1
# define __ASSUME_PIPE2 1
# define __ASSUME_EVENTFD2 1
# define __ASSUME_SIGNALFD4 1
# define __ASSUME_DUP3 1
#endif
/* Support for the accept4 syscall was added in 3.3. */
#if __LINUX_KERNEL_VERSION >= 0x030300
# define __ASSUME_ACCEPT4 1
#endif
#include_next <kernel-features.h>
#endif /* _KERNEL_FEATURES_H */
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