freebsd-dev/sys/sys/syslimits.h
Joerg Wunsch a5f50ef9e4 netchild's mega-patch to isolate compiler dependencies into a central
place.

This moves the dependency on GCC's and other compiler's features into
the central sys/cdefs.h file, while the individual source files can
then refer to #ifdef __COMPILER_FEATURE_FOO where they by now used to
refer to #if __GNUC__ > 3.1415 && __BARC__ <= 42.

By now, GCC and ICC (the Intel compiler) have been actively tested on
IA32 platforms by netchild.  Extension to other compilers is supposed
to be possible, of course.

Submitted by:	netchild
Reviewed by:	various developers on arch@, some time ago
2005-03-02 21:33:29 +00:00

79 lines
3.1 KiB
C

/*-
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)syslimits.h 8.1 (Berkeley) 6/2/93
* $FreeBSD$
*/
#ifndef _SYS_SYSLIMITS_H_
#define _SYS_SYSLIMITS_H_
#if !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_)
#ifndef _SYS_CDEFS_H_
#error this file needs sys/cdefs.h as a prerequisite
#endif
#ifdef __CC_SUPPORTS_WARNING
#warning "No user-serviceable parts inside."
#endif
#endif
/*
* Do not add any new variables here. (See the comment at the end of
* the file for why.)
*/
#if defined(__arm__) || defined(__powerpc__)
#define ARG_MAX 65536 /* max bytes for an exec function */
#else
#define ARG_MAX 262144 /* max bytes for an exec function */
#endif
#ifndef CHILD_MAX
#define CHILD_MAX 40 /* max simultaneous processes */
#endif
#define LINK_MAX 32767 /* max file link count */
#define MAX_CANON 255 /* max bytes in term canon input line */
#define MAX_INPUT 255 /* max bytes in terminal input */
#define NAME_MAX 255 /* max bytes in a file name */
#define NGROUPS_MAX 16 /* max supplemental group id's */
#ifndef OPEN_MAX
#define OPEN_MAX 64 /* max open files per process */
#endif
#define PATH_MAX 1024 /* max bytes in pathname */
#define PIPE_BUF 512 /* max bytes for atomic pipe writes */
#define IOV_MAX 1024 /* max elements in i/o vector */
/*
* We leave the following values undefined to force applications to either
* assume conservative values or call sysconf() to get the current value.
*
* HOST_NAME_MAX
*
* (We should do this for most of the values currently defined here,
* but many programs are not prepared to deal with this yet.)
*/
#endif