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_ */