bsd/sys/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_ */