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
32#ifndef _SYS_SYSLIMITS_H_
33#define _SYS_SYSLIMITS_H_
34
35#if !defined(_STANDALONE) && !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_)
36#warning "No user-serviceable parts inside."
37#endif
38
39/*
40 * Do not add any new variables here.  (See the comment at the end of
41 * the file for why.)
42 */
43#ifndef __ILP32__
44#define	ARG_MAX	      (2 * 256 * 1024)	/* max bytes for an exec function */
45#else
46#define	ARG_MAX		  (256 * 1024)	/* max bytes for KVA-starved archs */
47#endif
48#ifndef CHILD_MAX
49#define	CHILD_MAX		   40	/* max simultaneous processes */
50#endif
51#define	MAX_CANON		  255	/* max bytes in term canon input line */
52#define	MAX_INPUT		  255	/* max bytes in terminal input */
53#define	NAME_MAX		  255	/* max bytes in a file name */
54#ifndef NGROUPS_MAX
55#define	NGROUPS_MAX	 	 1023	/* max supplemental group id's */
56#endif
57#ifndef OPEN_MAX
58#define	OPEN_MAX		   64	/* max open files per process */
59#endif
60#define	PATH_MAX		 1024	/* max bytes in pathname */
61#define	PIPE_BUF		  512	/* max bytes for atomic pipe writes */
62#define	IOV_MAX			 1024	/* max elements in i/o vector */
63
64/*
65 * We leave the following values undefined to force applications to either
66 * assume conservative values or call sysconf() to get the current value.
67 *
68 * HOST_NAME_MAX
69 *
70 * (We should do this for most of the values currently defined here,
71 * but many programs are not prepared to deal with this yet.)
72 */
73#endif
74