00001 /*- 00002 * Copyright (c) 1988, 1993 00003 * The Regents of the University of California. All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 4. Neither the name of the University nor the names of its contributors 00014 * may be used to endorse or promote products derived from this software 00015 * without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * @(#)syslimits.h 8.1 (Berkeley) 6/2/93 00030 * $FreeBSD: src/sys/sys/syslimits.h,v 1.21 2005/03/02 21:33:29 joerg Exp $ 00031 */ 00032 00033 #ifndef _SYS_SYSLIMITS_H_ 00034 #define _SYS_SYSLIMITS_H_ 00035 00036 #if !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_) 00037 #ifndef _SYS_CDEFS_H_ 00038 #error this file needs sys/cdefs.h as a prerequisite 00039 #endif 00040 #ifdef __CC_SUPPORTS_WARNING 00041 #warning "No user-serviceable parts inside." 00042 #endif 00043 #endif 00044 00045 /* 00046 * Do not add any new variables here. (See the comment at the end of 00047 * the file for why.) 00048 */ 00049 #if defined(__arm__) || defined(__powerpc__) 00050 #define ARG_MAX 65536 /* max bytes for an exec function */ 00051 #else 00052 #define ARG_MAX 262144 /* max bytes for an exec function */ 00053 #endif 00054 #ifndef CHILD_MAX 00055 #define CHILD_MAX 40 /* max simultaneous processes */ 00056 #endif 00057 #define LINK_MAX 32767 /* max file link count */ 00058 #define MAX_CANON 255 /* max bytes in term canon input line */ 00059 #define MAX_INPUT 255 /* max bytes in terminal input */ 00060 #define NAME_MAX 255 /* max bytes in a file name */ 00061 #define NGROUPS_MAX 16 /* max supplemental group id's */ 00062 #ifndef OPEN_MAX 00063 #define OPEN_MAX 64 /* max open files per process */ 00064 #endif 00065 #ifndef __SYMBIAN32__ 00066 #define PATH_MAX 1024 /* max bytes in pathname */ 00067 #else 00068 #define PATH_MAX 256 /* max bytes in pathname. In Symbian, this cant be more than 256 */ 00069 #endif /* __SYMBIAN32__ */ 00070 #define PIPE_BUF 512 /* max bytes for atomic pipe writes */ 00071 #define IOV_MAX 1024 /* max elements in i/o vector */ 00072 00073 /* 00074 * We leave the following values undefined to force applications to either 00075 * assume conservative values or call sysconf() to get the current value. 00076 * 00077 * HOST_NAME_MAX 00078 * 00079 * (We should do this for most of the values currently defined here, 00080 * but many programs are not prepared to deal with this yet.) 00081 */ 00082 #endif