/usr/include/x86_64-linux-gnu/bits/param.h is in libc6-dev 2.23-0ubuntu10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | /* Old-style Unix parameters and limits. Linux version.
Copyright (C) 1995-2016 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 _SYS_PARAM_H
# error "Never use <bits/param.h> directly; include <sys/param.h> instead."
#endif
#ifndef ARG_MAX
# define __undef_ARG_MAX
#endif
#include <linux/limits.h>
#include <linux/param.h>
/* The kernel headers define ARG_MAX. The value is wrong, though. */
#ifdef __undef_ARG_MAX
# undef ARG_MAX
# undef __undef_ARG_MAX
#endif
#define MAXSYMLINKS 20
/* The following are not really correct but it is a value we used for a
long time and which seems to be usable. People should not use NOFILE
and NCARGS anyway. */
#define NOFILE 256
#define NCARGS 131072
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