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58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/* Set flags signalling availability of kernel features based on given
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kernel version number.
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Copyright (C) 2010-2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _KERNEL_FEATURES_H
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#define _KERNEL_FEATURES_H 1
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/* The utimes syscall has been available for some architectures
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forever. */
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#define __ASSUME_UTIMES 1
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/* pselect/ppoll were introduced just after 2.6.16-rc1. Due to the way
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the kernel versions are advertised we can only rely on 2.6.17 to have
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the code. */
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#if __LINUX_KERNEL_VERSION >= 0x020616
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# define __ASSUME_PSELECT 1
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# define __ASSUME_PPOLL 1
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#endif
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/* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.23. */
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#if __LINUX_KERNEL_VERSION >= 0x020617
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# define __ASSUME_O_CLOEXEC 1
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#endif
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/* Support for various CLOEXEC and NONBLOCK flags was added in 2.6.27. */
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#if __LINUX_KERNEL_VERSION >= 0x02061b
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# define __ASSUME_SOCK_CLOEXEC 1
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# define __ASSUME_IN_NONBLOCK 1
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# define __ASSUME_PIPE2 1
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# define __ASSUME_EVENTFD2 1
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# define __ASSUME_SIGNALFD4 1
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# define __ASSUME_DUP3 1
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#endif
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/* Support for the accept4 syscall was added in 3.3. */
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#if __LINUX_KERNEL_VERSION >= 0x030300
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# define __ASSUME_ACCEPT4 1
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#endif
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#include_next <kernel-features.h>
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#endif /* _KERNEL_FEATURES_H */
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