1a9643ea8Slogwang /*- 2*22ce4affSfengbojiang * SPDX-License-Identifier: BSD-3-Clause 3*22ce4affSfengbojiang * 4a9643ea8Slogwang * Copyright (c) 1988, 1993 5a9643ea8Slogwang * The Regents of the University of California. All rights reserved. 6a9643ea8Slogwang * 7a9643ea8Slogwang * Redistribution and use in source and binary forms, with or without 8a9643ea8Slogwang * modification, are permitted provided that the following conditions 9a9643ea8Slogwang * are met: 10a9643ea8Slogwang * 1. Redistributions of source code must retain the above copyright 11a9643ea8Slogwang * notice, this list of conditions and the following disclaimer. 12a9643ea8Slogwang * 2. Redistributions in binary form must reproduce the above copyright 13a9643ea8Slogwang * notice, this list of conditions and the following disclaimer in the 14a9643ea8Slogwang * documentation and/or other materials provided with the distribution. 15*22ce4affSfengbojiang * 3. Neither the name of the University nor the names of its contributors 16a9643ea8Slogwang * may be used to endorse or promote products derived from this software 17a9643ea8Slogwang * without specific prior written permission. 18a9643ea8Slogwang * 19a9643ea8Slogwang * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20a9643ea8Slogwang * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21a9643ea8Slogwang * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22a9643ea8Slogwang * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23a9643ea8Slogwang * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24a9643ea8Slogwang * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25a9643ea8Slogwang * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26a9643ea8Slogwang * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27a9643ea8Slogwang * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28a9643ea8Slogwang * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29a9643ea8Slogwang * SUCH DAMAGE. 30a9643ea8Slogwang * 31a9643ea8Slogwang * @(#)syslimits.h 8.1 (Berkeley) 6/2/93 32a9643ea8Slogwang * $FreeBSD$ 33a9643ea8Slogwang */ 34a9643ea8Slogwang 35a9643ea8Slogwang #ifndef _SYS_SYSLIMITS_H_ 36a9643ea8Slogwang #define _SYS_SYSLIMITS_H_ 37a9643ea8Slogwang 38*22ce4affSfengbojiang #if !defined(_STANDALONE) && !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_) 39a9643ea8Slogwang #ifndef _SYS_CDEFS_H_ 40a9643ea8Slogwang #error this file needs sys/cdefs.h as a prerequisite 41a9643ea8Slogwang #endif 42a9643ea8Slogwang #ifdef __CC_SUPPORTS_WARNING 43a9643ea8Slogwang #warning "No user-serviceable parts inside." 44a9643ea8Slogwang #endif 45a9643ea8Slogwang #endif 46a9643ea8Slogwang 47a9643ea8Slogwang /* 48a9643ea8Slogwang * Do not add any new variables here. (See the comment at the end of 49a9643ea8Slogwang * the file for why.) 50a9643ea8Slogwang */ 51*22ce4affSfengbojiang #ifndef __ILP32__ 52*22ce4affSfengbojiang #define ARG_MAX (2 * 256 * 1024) /* max bytes for an exec function */ 53*22ce4affSfengbojiang #else 54*22ce4affSfengbojiang #define ARG_MAX (256 * 1024) /* max bytes for KVA-starved archs */ 55*22ce4affSfengbojiang #endif 56a9643ea8Slogwang #ifndef CHILD_MAX 57a9643ea8Slogwang #define CHILD_MAX 40 /* max simultaneous processes */ 58a9643ea8Slogwang #endif 59a9643ea8Slogwang #define MAX_CANON 255 /* max bytes in term canon input line */ 60a9643ea8Slogwang #define MAX_INPUT 255 /* max bytes in terminal input */ 61a9643ea8Slogwang #define NAME_MAX 255 /* max bytes in a file name */ 62a9643ea8Slogwang #ifndef NGROUPS_MAX 63a9643ea8Slogwang #define NGROUPS_MAX 1023 /* max supplemental group id's */ 64a9643ea8Slogwang #endif 65a9643ea8Slogwang #ifndef OPEN_MAX 66a9643ea8Slogwang #define OPEN_MAX 64 /* max open files per process */ 67a9643ea8Slogwang #endif 68a9643ea8Slogwang #define PATH_MAX 1024 /* max bytes in pathname */ 69a9643ea8Slogwang #define PIPE_BUF 512 /* max bytes for atomic pipe writes */ 70a9643ea8Slogwang #define IOV_MAX 1024 /* max elements in i/o vector */ 71a9643ea8Slogwang 72a9643ea8Slogwang /* 73a9643ea8Slogwang * We leave the following values undefined to force applications to either 74a9643ea8Slogwang * assume conservative values or call sysconf() to get the current value. 75a9643ea8Slogwang * 76a9643ea8Slogwang * HOST_NAME_MAX 77a9643ea8Slogwang * 78a9643ea8Slogwang * (We should do this for most of the values currently defined here, 79a9643ea8Slogwang * but many programs are not prepared to deal with this yet.) 80a9643ea8Slogwang */ 81a9643ea8Slogwang #endif 82