syslimits.h
1 /* 2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* $NetBSD: syslimits.h,v 1.15 1997/06/25 00:48:09 lukem Exp $ */ 29 30 /* 31 * Copyright (c) 1988, 1993 32 * The Regents of the University of California. All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. All advertising materials mentioning features or use of this software 43 * must display the following acknowledgement: 44 * This product includes software developed by the University of 45 * California, Berkeley and its contributors. 46 * 4. Neither the name of the University nor the names of its contributors 47 * may be used to endorse or promote products derived from this software 48 * without specific prior written permission. 49 * 50 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 51 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 54 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 55 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 56 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 57 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 58 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 60 * SUCH DAMAGE. 61 * 62 * @(#)syslimits.h 8.1 (Berkeley) 6/2/93 63 */ 64 65 #ifndef _SYS_SYSLIMITS_H_ 66 #define _SYS_SYSLIMITS_H_ 67 68 #include <sys/cdefs.h> 69 70 #if !defined(_ANSI_SOURCE) 71 72 /* max bytes for an exec function */ 73 #ifdef XNU_KERNEL_PRIVATE 74 #if defined(XNU_TARGET_OS_OSX) 75 #define ARG_MAX (1024 * 1024) 76 #else 77 #define ARG_MAX (256 * 1024) 78 #endif 79 #else /* XNU_KERNEL_PRIVATE */ 80 #if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) 81 #define ARG_MAX (1024 * 1024) 82 #else 83 #define ARG_MAX (256 * 1024) 84 #endif 85 #endif /* XNU_KERNEL_PRIVATE */ 86 87 /* 88 * Note: CHILD_MAX *must* be less than hard_maxproc, which is set at 89 * compile time; you *cannot* set it higher than the hard limit!! 90 */ 91 92 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 93 #define CHILD_MAX 266 /* max simultaneous processes */ 94 #define GID_MAX 2147483647U /* max value for a gid_t (2^31-2) */ 95 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 96 #define LINK_MAX 32767 /* max file link count */ 97 #define MAX_CANON 1024 /* max bytes in term canon input line */ 98 #define MAX_INPUT 1024 /* max bytes in terminal input */ 99 #define NAME_MAX 255 /* max bytes in a file name */ 100 #define NGROUPS_MAX 16 /* max supplemental group id's */ 101 #if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE) 102 #define UID_MAX 2147483647U /* max value for a uid_t (2^31-2) */ 103 104 #define OPEN_MAX 10240 /* max open files per process - todo, make a config option? */ 105 106 #endif /* (_POSIX_C_SOURCE && !_DARWIN_C_SOURCE) */ 107 #define PATH_MAX 1024 /* max bytes in pathname */ 108 #define PIPE_BUF 512 /* max bytes for atomic pipe writes */ 109 110 #define BC_BASE_MAX 99 /* max ibase/obase values in bc(1) */ 111 #define BC_DIM_MAX 2048 /* max array elements in bc(1) */ 112 #define BC_SCALE_MAX 99 /* max scale value in bc(1) */ 113 #define BC_STRING_MAX 1000 /* max const string length in bc(1) */ 114 #define CHARCLASS_NAME_MAX 14 /* max character class name size */ 115 #define COLL_WEIGHTS_MAX 2 /* max weights for order keyword */ 116 #define EQUIV_CLASS_MAX 2 117 #define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */ 118 #define LINE_MAX 2048 /* max bytes in an input line */ 119 #define RE_DUP_MAX 255 /* max RE's in interval notation */ 120 121 #if __DARWIN_UNIX03 122 #define NZERO 20 /* default priority [XSI] */ 123 /* = ((PRIO_MAX - PRIO_MIN) / 2) + 1 */ 124 /* range: 0 - 39 [(2 * NZERO) - 1] */ 125 /* 0 is not actually used */ 126 #else /* !__DARWIN_UNIX03 */ 127 #define NZERO 0 /* default priority */ 128 /* range: -20 - 20 */ 129 /* (PRIO_MIN - PRIO_MAX) */ 130 #endif /* __DARWIN_UNIX03 */ 131 #endif /* !_ANSI_SOURCE */ 132 133 #endif /* !_SYS_SYSLIMITS_H_ */