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72 lines
2.6 KiB
C
72 lines
2.6 KiB
C
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/* Set flags signalling availability of kernel features based on given
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kernel version number.
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Copyright (C) 1999 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file must not contain any C code. At least it must be protected
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to allow using the file also in assembler files. */
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#ifndef __LINUX_KERNEL_VERSION
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/* We assume the worst; all kernels should be supported. */
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# define __LINUX_KERNEL_VERSION 0
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#endif
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/* We assume for __LINUX_KERNEL_VERSION the same encoding used in
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linux/version.h. I.e., the major, minor, and subminor all get a
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byte with the major number being in the highest byte. This means
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we can do numeric comparisons.
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In the following we will define certain symbols depending on
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whether the describes kernel feature is available in the kernel
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version given by __LINUX_KERNEL_VERSION. We are not always exactly
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recording the correct versions in which the features were
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introduced. If somebody cares these values can afterwards be
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corrected. Most of the numbers here are set corresponding to
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2.2.0. */
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/* `getcwd' system call. */
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#if __LINUX_KERNEL_VERSION >= 131584
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# define __ASSUME_GETCWD_SYSCALL 1
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#endif
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/* Real-time signal became usable in 2.1.70. */
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#if __LINUX_KERNEL_VERSION >= 131398
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# define __ASSUME_REALTIME_SIGNALS 1
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#endif
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/* When were the `pread'/`pwrite' syscalls introduced? */
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#if __LINUX_KERNEL_VERSION >= 131584
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# define __ASSUME_PREAD_SYSCALL 1
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# define __ASSUME_PWRITE_SYSCALL 1
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#endif
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/* When was `poll' introduced? */
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#if __LINUX_KERNEL_VERSION >= 131584
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# define __ASSUME_POLL_SYSCALL 1
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#endif
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/* The `lchown' syscall was introduced in 2.1.80. */
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#if __LINUX_KERNEL_VERSION >= 131408
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# define __ASSUME_LCHOWN_SYSCALL 1
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#endif
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/* When did the `setresuid' sysall became available? */
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#if __LINUX_KERNEL_VERSION >= 131584
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# define __ASSUME_SETRESUID_SYSCALL 1
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#endif
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