1 /* $NetBSD: limits.h,v 1.45 2024/09/09 12:01:01 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 * @(#)limits.h 8.2 (Berkeley) 1/4/94 32 */ 33 34 #ifndef _LIMITS_H_ 35 #define _LIMITS_H_ 36 37 #include <sys/featuretest.h> 38 39 #if defined(_POSIX_C_SOURCE) || defined(_XOPEN_SOURCE) || \ 40 defined(_NETBSD_SOURCE) 41 #define _POSIX_AIO_LISTIO_MAX 2 42 #define _POSIX_AIO_MAX 1 43 #define _POSIX_ARG_MAX 4096 44 #define _POSIX_CHILD_MAX 25 45 #define _POSIX_HOST_NAME_MAX 255 46 #define _POSIX_LINK_MAX 8 47 #define _POSIX_LOGIN_NAME_MAX 9 48 #define _POSIX_MAX_CANON 255 49 #define _POSIX_MAX_INPUT 255 50 #define _POSIX_MQ_OPEN_MAX 8 51 #define _POSIX_MQ_PRIO_MAX 32 52 #define _POSIX_NAME_MAX 14 53 #define _POSIX_NGROUPS_MAX 8 54 #define _POSIX_OPEN_MAX 20 55 #define _POSIX_PATH_MAX 256 56 #define _POSIX_PIPE_BUF 512 57 #define _POSIX_RE_DUP_MAX 255 58 #define _POSIX_SSIZE_MAX 32767 59 #define _POSIX_STREAM_MAX 8 60 #define _POSIX_SYMLINK_MAX 255 61 #define _POSIX_SYMLOOP_MAX 8 62 63 /* 64 * Exact minimum values prescribed by: 65 * Open Group Base Specifications Issue 7 66 * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html 67 */ 68 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 69 #define _POSIX_THREAD_KEYS_MAX 128 70 #define _POSIX_THREAD_THREADS_MAX 64 71 72 /* 73 * Actual values used by libpthread, defined in terms of the above 74 * except for PTHREAD_KEYS_MAX which is bigger than standard mandated 75 * minimum value _POSIX_THREAD_KEYS_MAX, and PTHREAD_STACK_MIN which 76 * doesn't have a defined name for the minimum value of zero. 77 */ 78 #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS 79 #define PTHREAD_KEYS_MAX 256 80 #define PTHREAD_STACK_MIN 4096 /* XXX MIN_PAGE_SIZE */ 81 #define PTHREAD_THREADS_MAX _POSIX_THREAD_THREADS_MAX 82 83 #define _POSIX_TIMER_MAX 32 84 #define _POSIX_SEM_NSEMS_MAX 256 85 #define _POSIX_SIGQUEUE_MAX 32 86 #define _POSIX_REALTIME_SIGNALS 200112L 87 #define _POSIX_DELAYTIMER_MAX 32 88 #define _POSIX_TTY_NAME_MAX 9 89 #define _POSIX_TZNAME_MAX 6 90 91 #define _POSIX2_BC_BASE_MAX 99 92 #define _POSIX2_BC_DIM_MAX 2048 93 #define _POSIX2_BC_SCALE_MAX 99 94 #define _POSIX2_BC_STRING_MAX 1000 95 #define _POSIX2_CHARCLASS_NAME_MAX 14 96 #define _POSIX2_COLL_WEIGHTS_MAX 2 97 #define _POSIX2_EXPR_NEST_MAX 32 98 #define _POSIX2_LINE_MAX 2048 99 #define _POSIX2_RE_DUP_MAX 255 100 101 /* 102 * X/Open CAE Specifications, 103 * adopted in IEEE Std 1003.1-2001 XSI. 104 */ 105 #if (_POSIX_C_SOURCE - 0) >= 200112L || defined(_XOPEN_SOURCE) || \ 106 defined(_NETBSD_SOURCE) 107 #define _XOPEN_IOV_MAX 16 108 #define _XOPEN_NAME_MAX 256 109 #define _XOPEN_PATH_MAX 1024 110 111 #define PASS_MAX 128 /* Legacy */ 112 113 #define CHARCLASS_NAME_MAX 14 114 #define NL_ARGMAX 9 115 #define NL_LANGMAX 14 116 #define NL_MSGMAX 32767 117 #define NL_NMAX 1 118 #define NL_SETMAX 255 119 #define NL_TEXTMAX 2048 120 121 /* IEEE Std 1003.1-2001 TSF */ 122 #define _GETGR_R_SIZE_MAX 1024 123 #define _GETPW_R_SIZE_MAX 1024 124 125 /* Always ensure that this is consistent with <stdio.h> */ 126 #ifndef TMP_MAX 127 #define TMP_MAX 308915776 /* Legacy */ 128 #endif 129 #endif /* _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE || _NETBSD_SOURCE */ 130 131 /* 132 * IEEE Std 1003.1-2024 (POSIX.1-2024) 133 */ 134 #if (_POSIX_C_SOURCE - 0) >= 202405L || (_XOPEN_SOURCE - 0) >= 800 || \ 135 defined(_NETBSD_SOURCE) 136 #define GETENTROPY_MAX 256 137 #endif 138 139 #endif /* _POSIX_C_SOURCE || _XOPEN_SOURCE || _NETBSD_SOURCE */ 140 141 #define MB_LEN_MAX 32 /* Allow ISO/IEC 2022 */ 142 143 #include <machine/limits.h> 144 145 #ifdef __CHAR_UNSIGNED__ 146 # define CHAR_MIN 0 147 # define CHAR_MAX UCHAR_MAX 148 #else 149 # define CHAR_MIN SCHAR_MIN 150 # define CHAR_MAX SCHAR_MAX 151 #endif 152 153 #include <sys/syslimits.h> 154 155 #endif /* !_LIMITS_H_ */ 156