1 /* $NetBSD: syslimits.h,v 1.28 2015/08/21 07:19:39 uebayasi Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)syslimits.h 8.1 (Berkeley) 6/2/93 32 */ 33 34 #ifndef _SYS_SYSLIMITS_H_ 35 #define _SYS_SYSLIMITS_H_ 36 37 #if defined(__minix) 38 #define OPEN_MAX 255 39 #endif /* !defined(__minix) */ 40 41 #include <sys/featuretest.h> 42 43 #if defined(_KERNEL_OPT) 44 #include "opt_syslimits.h" 45 #endif 46 47 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 48 defined(_NETBSD_SOURCE) 49 #define ARG_MAX (256 * 1024) /* max bytes for an exec function */ 50 #ifndef CHILD_MAX 51 #define CHILD_MAX 160 /* max simultaneous processes */ 52 #endif 53 #define GID_MAX 2147483647U /* max value for a gid_t (2^31-2) */ 54 #define LINK_MAX 32767 /* max file link count */ 55 #define MAX_CANON 255 /* max bytes in term canon input line */ 56 #define MAX_INPUT 255 /* max bytes in terminal input */ 57 #define NAME_MAX 511 /* max bytes in a file name, must be */ 58 /* kept in sync with MAXNAMLEN */ 59 #define NGROUPS_MAX 16 /* max supplemental group id's */ 60 #define UID_MAX 2147483647U /* max value for a uid_t (2^31-2) */ 61 #ifndef OPEN_MAX 62 #define OPEN_MAX 128 /* max open files per process */ 63 #endif 64 #define PATH_MAX 1024 /* max bytes in pathname */ 65 #if defined(__minix) 66 #define PIPE_BUF 32768 /* max bytes for atomic pipe writes */ 67 #else 68 #define PIPE_BUF 512 /* max bytes for atomic pipe writes */ 69 #endif /* defined(__minix) */ 70 71 #define BC_BASE_MAX INT_MAX /* max ibase/obase values in bc(1) */ 72 #define BC_DIM_MAX 65535 /* max array elements in bc(1) */ 73 #define BC_SCALE_MAX INT_MAX /* max scale value in bc(1) */ 74 #define BC_STRING_MAX INT_MAX /* max const string length in bc(1) */ 75 #define COLL_WEIGHTS_MAX 2 /* max weights for order keyword */ 76 #define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */ 77 #define LINE_MAX 2048 /* max bytes in an input line */ 78 #define RE_DUP_MAX 255 /* max RE's in interval notation */ 79 80 /* 81 * IEEE Std 1003.1c-95, adopted in X/Open CAE Specification Issue 5 Version 2 82 */ 83 #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ 84 defined(_NETBSD_SOURCE) 85 #define LOGIN_NAME_MAX 17 /* max login name length incl. NUL */ 86 #endif 87 88 /* 89 * X/Open CAE Specification Issue 5 Version 2 90 */ 91 #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) 92 #define IOV_MAX 1024 /* max # of iovec's for readv(2) etc. */ 93 #define NZERO 20 /* default "nice" */ 94 #endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */ 95 96 #endif /* !_ANSI_SOURCE */ 97 98 #endif /* !_SYS_SYSLIMITS_H_ */ 99