1/*-
 2 * SPDX-License-Identifier: BSD-3-Clause
 3 *
 4 * Copyright (c) 1988, 1993
 5 *	The Regents of the University of California.  All rights reserved.
 6 *
 7 * Redistribution and use in source and binary forms, with or without
 8 * modification, are permitted provided that the following conditions
 9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 *    may be used to endorse or promote products derived from this software
17 *    without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 *	@(#)syslimits.h	8.1 (Berkeley) 6/2/93
32 */
33
34#ifndef _SYS_SYSLIMITS_H_
35#define _SYS_SYSLIMITS_H_
36
37#if !defined(_STANDALONE) && !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_)
38#warning "No user-serviceable parts inside."
39#endif
40
41/*
42 * Do not add any new variables here.  (See the comment at the end of
43 * the file for why.)
44 */
45#ifndef __ILP32__
46#define	ARG_MAX	      (2 * 256 * 1024)	/* max bytes for an exec function */
47#else
48#define	ARG_MAX		  (256 * 1024)	/* max bytes for KVA-starved archs */
49#endif
50#ifndef CHILD_MAX
51#define	CHILD_MAX		   40	/* max simultaneous processes */
52#endif
53#define	MAX_CANON		  255	/* max bytes in term canon input line */
54#define	MAX_INPUT		  255	/* max bytes in terminal input */
55#define	NAME_MAX		  255	/* max bytes in a file name */
56#ifndef NGROUPS_MAX
57#define	NGROUPS_MAX	 	 1023	/* max supplemental group id's */
58#endif
59#ifndef OPEN_MAX
60#define	OPEN_MAX		   64	/* max open files per process */
61#endif
62#define	PATH_MAX		 1024	/* max bytes in pathname */
63#define	PIPE_BUF		  512	/* max bytes for atomic pipe writes */
64#define	IOV_MAX			 1024	/* max elements in i/o vector */
65
66/*
67 * We leave the following values undefined to force applications to either
68 * assume conservative values or call sysconf() to get the current value.
69 *
70 * HOST_NAME_MAX
71 *
72 * (We should do this for most of the values currently defined here,
73 * but many programs are not prepared to deal with this yet.)
74 */
75#endif