| 1 | /*- |
| 2 | * SPDX-License-Identifier: BSD-3-Clause |
| 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 | |
| 32 | #ifndef _SYS_SYSLIMITS_H_ |
| 33 | #define _SYS_SYSLIMITS_H_ |
| 34 | |
| 35 | #if !defined(_STANDALONE) && !defined(_KERNEL) && !defined(_LIMITS_H_) && !defined(_SYS_PARAM_H_) |
| 36 | #warning "No user-serviceable parts inside." |
| 37 | #endif |
| 38 | |
| 39 | /* |
| 40 | * Do not add any new variables here. (See the comment at the end of |
| 41 | * the file for why.) |
| 42 | */ |
| 43 | #ifndef __ILP32__ |
| 44 | #define ARG_MAX (2 * 256 * 1024) /* max bytes for an exec function */ |
| 45 | #else |
| 46 | #define ARG_MAX (256 * 1024) /* max bytes for KVA-starved archs */ |
| 47 | #endif |
| 48 | #ifndef CHILD_MAX |
| 49 | #define CHILD_MAX 40 /* max simultaneous processes */ |
| 50 | #endif |
| 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 255 /* max bytes in a file name */ |
| 54 | #ifndef NGROUPS_MAX |
| 55 | #define NGROUPS_MAX 1023 /* max supplemental group id's */ |
| 56 | #endif |
| 57 | #ifndef OPEN_MAX |
| 58 | #define OPEN_MAX 64 /* 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 | #define IOV_MAX 1024 /* max elements in i/o vector */ |
| 63 | |
| 64 | /* |
| 65 | * We leave the following values undefined to force applications to either |
| 66 | * assume conservative values or call sysconf() to get the current value. |
| 67 | * |
| 68 | * HOST_NAME_MAX |
| 69 | * |
| 70 | * (We should do this for most of the values currently defined here, |
| 71 | * but many programs are not prepared to deal with this yet.) |
| 72 | */ |
| 73 | #endif |