| 1 | /* $NetBSD: syslimits.h,v 1.29 2024/12/22 23:18:29 riastradh 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 | #include <sys/featuretest.h> |
| 38 | |
| 39 | #if defined(_KERNEL_OPT) |
| 40 | #include "opt_syslimits.h" |
| 41 | #endif |
| 42 | |
| 43 | #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ |
| 44 | defined(_NETBSD_SOURCE) |
| 45 | #define ARG_MAX (256 * 1024) /* max bytes for an exec function */ |
| 46 | #ifndef CHILD_MAX |
| 47 | #define CHILD_MAX 160 /* max simultaneous processes */ |
| 48 | #endif |
| 49 | #define GID_MAX 2147483647U /* max value for a gid_t (2^31-2) */ |
| 50 | #define LINK_MAX 32767 /* max file link count */ |
| 51 | #define MAX_CANON 255 /* max bytes in term canon input line */ |
| 52 | #define MAX_INPUT 255 /* max bytes in terminal input */ |
| 53 | #define NAME_MAX 511 /* max bytes in a file name, must be */ |
| 54 | /* kept in sync with MAXNAMLEN */ |
| 55 | #define NGROUPS_MAX 16 /* max supplemental group id's */ |
| 56 | #define UID_MAX 2147483647U /* max value for a uid_t (2^31-2) */ |
| 57 | #ifndef OPEN_MAX |
| 58 | #define OPEN_MAX 128 /* max open files per process */ |
| 59 | #endif |
| 60 | #define PATH_MAX 1024 /* max bytes in pathname */ |
| 61 | #define PIPE_BUF 512 /* max bytes for atomic pipe writes */ |
| 62 | |
| 63 | #define BC_BASE_MAX INT_MAX /* max ibase/obase values in bc(1) */ |
| 64 | #define BC_DIM_MAX 65535 /* max array elements in bc(1) */ |
| 65 | #define BC_SCALE_MAX INT_MAX /* max scale value in bc(1) */ |
| 66 | #define BC_STRING_MAX INT_MAX /* max const string length in bc(1) */ |
| 67 | #define COLL_WEIGHTS_MAX 2 /* max weights for order keyword */ |
| 68 | #define EXPR_NEST_MAX 32 /* max expressions nested in expr(1) */ |
| 69 | #define LINE_MAX 2048 /* max bytes in an input line */ |
| 70 | #define RE_DUP_MAX 255 /* max RE's in interval notation */ |
| 71 | |
| 72 | /* |
| 73 | * POSIX Realtime Extension (1003.1b-1993) |
| 74 | */ |
| 75 | #if (_POSIX_C_SOURCE - 0) >= 199309L || defined(_NETBSD_SOURCE) |
| 76 | #define DELAYTIMER_MAX 32 /* max timer_overrun() value */ |
| 77 | #endif |
| 78 | |
| 79 | /* |
| 80 | * IEEE Std 1003.1c-95, adopted in X/Open CAE Specification Issue 5 Version 2 |
| 81 | */ |
| 82 | #if (_POSIX_C_SOURCE - 0) >= 199506L || (_XOPEN_SOURCE - 0) >= 500 || \ |
| 83 | defined(_NETBSD_SOURCE) |
| 84 | #define LOGIN_NAME_MAX 17 /* max login name length incl. NUL */ |
| 85 | #endif |
| 86 | |
| 87 | /* |
| 88 | * X/Open CAE Specification Issue 5 Version 2 |
| 89 | */ |
| 90 | #if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE) |
| 91 | #define IOV_MAX 1024 /* max # of iovec's for readv(2) etc. */ |
| 92 | #define NZERO 20 /* default "nice" */ |
| 93 | #endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */ |
| 94 | |
| 95 | #endif /* !_ANSI_SOURCE */ |
| 96 | |
| 97 | #endif /* !_SYS_SYSLIMITS_H_ */ |