sys/sys/syslimits.h

   1 /*
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  *      @(#)syslimits.h 8.1 (Berkeley) 6/2/93
  34  * $FreeBSD: src/sys/sys/syslimits.h,v 1.9 1999/08/28 00:52:03 peter Exp $
  35  * $DragonFly: src/sys/sys/syslimits.h,v 1.4 2005/08/23 17:44:22 dillon Exp $
  36  */
  37
  38 #ifndef _SYS_SYSLIMITS_H_
  39 #define _SYS_SYSLIMITS_H_
  40
  41 #define ARG_MAX                 65536   /* max bytes for an exec function */
  42 #ifndef CHILD_MAX
  43 #define CHILD_MAX                  40   /* max simultaneous processes */
  44 #endif
  45 #define LINK_MAX                32767   /* max file link count */
  46 #define MAX_CANON                 255   /* max bytes in term canon input line */
  47 #define MAX_INPUT                 255   /* max bytes in terminal input */
  48 #define NAME_MAX                  255   /* max bytes in a file name */
  49 #define NGROUPS_MAX                16   /* max supplemental group id's */
  50 #ifndef OPEN_MAX
  51 #define OPEN_MAX                   64   /* max open files per process */
  52 #endif
  53 #define TTY_PATH_MAX              256   /* max tty pathname */
  54 #define PATH_MAX                 1024   /* max bytes in pathname */
  55 #define PIPE_BUF                  512   /* max bytes for atomic pipe writes */
  56 #define IOV_MAX                  1024   /* max elements in i/o vector */
  57
  58 #define BC_BASE_MAX                99   /* max ibase/obase values in bc(1) */
  59 #define BC_DIM_MAX               2048   /* max array elements in bc(1) */
  60 #define BC_SCALE_MAX               99   /* max scale value in bc(1) */
  61 #define BC_STRING_MAX            1000   /* max const string length in bc(1) */
  62 #define COLL_WEIGHTS_MAX            0   /* max weights for order keyword */
  63 #define EXPR_NEST_MAX              32   /* max expressions nested in expr(1) */
  64 #define LINE_MAX                 2048   /* max bytes in an input line */
  65 #define RE_DUP_MAX                255   /* max RE's in interval notation */
  66
  67 #endif