xref: /freebsd/include/limits.h (revision b8fe6d7055b3a274cd646d0a6b5d3928f2fd7d7a)
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 _LIMITS_H_
33 #define _LIMITS_H_
34 
35 #include <sys/cdefs.h>
36 
37 #if __ISO_C_VISIBLE >= 2023 || __BSD_VISIBLE
38 #define __STDC_VERSION_LIMITS_H__	202311L
39 #endif
40 
41 #if __POSIX_VISIBLE
42 #define	_POSIX_ARG_MAX		4096
43 #define	_POSIX_LINK_MAX		8
44 #define	_POSIX_MAX_CANON	255
45 #define	_POSIX_MAX_INPUT	255
46 #define	_POSIX_NAME_MAX		14
47 #define	_POSIX_PIPE_BUF		512
48 #define	_POSIX_SSIZE_MAX	32767
49 #define	_POSIX_STREAM_MAX	8
50 
51 #if __POSIX_VISIBLE >= 200112
52 #define	_POSIX_CHILD_MAX	25
53 #define	_POSIX_NGROUPS_MAX	8
54 #define	_POSIX_OPEN_MAX		20
55 #define	_POSIX_PATH_MAX		256
56 #define	_POSIX_TZNAME_MAX	6
57 #else
58 #define	_POSIX_CHILD_MAX	6
59 #define	_POSIX_NGROUPS_MAX	0
60 #define	_POSIX_OPEN_MAX		16
61 #define	_POSIX_PATH_MAX		255
62 #define	_POSIX_TZNAME_MAX	3
63 #endif
64 
65 #if __POSIX_VISIBLE >= 200112
66 #define	BC_BASE_MAX		   99	/* max ibase/obase values in bc(1) */
67 #define	BC_DIM_MAX		 2048	/* max array elements in bc(1) */
68 #define	BC_SCALE_MAX		   99	/* max scale value in bc(1) */
69 #define	BC_STRING_MAX		 1000	/* max const string length in bc(1) */
70 #define	CHARCLASS_NAME_MAX	   14	/* max character class name size */
71 #define	COLL_WEIGHTS_MAX	   10	/* max weights for order keyword */
72 #define	EXPR_NEST_MAX		   32	/* max expressions nested in expr(1) */
73 #define	LINE_MAX		 2048	/* max bytes in an input line */
74 #define	RE_DUP_MAX		  255	/* max RE's in interval notation */
75 
76 #define	_POSIX2_BC_BASE_MAX	99
77 #define	_POSIX2_BC_DIM_MAX	2048
78 #define	_POSIX2_BC_SCALE_MAX	99
79 #define	_POSIX2_BC_STRING_MAX	1000
80 #define	_POSIX2_CHARCLASS_NAME_MAX 14
81 #define	_POSIX2_COLL_WEIGHTS_MAX 2
82 #define	_POSIX2_EQUIV_CLASS_MAX	2
83 #define	_POSIX2_EXPR_NEST_MAX	32
84 #define	_POSIX2_LINE_MAX	2048
85 #define	_POSIX2_RE_DUP_MAX	255
86 #endif
87 #endif
88 
89 #if __POSIX_VISIBLE >= 199309
90 #define	_POSIX_AIO_LISTIO_MAX	2
91 #define	_POSIX_AIO_MAX		1
92 #define	_POSIX_DELAYTIMER_MAX	32
93 #define	_POSIX_MQ_OPEN_MAX	8
94 #define	_POSIX_MQ_PRIO_MAX	32
95 #define	_POSIX_RTSIG_MAX	8
96 #define	_POSIX_SEM_NSEMS_MAX	256
97 #define	_POSIX_SEM_VALUE_MAX	32767
98 #define	_POSIX_SIGQUEUE_MAX	32
99 #define	_POSIX_TIMER_MAX	32
100 
101 #define	_POSIX_CLOCKRES_MIN	20000000
102 #endif
103 
104 #if __POSIX_VISIBLE >= 199506
105 #define	_POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
106 #define	_POSIX_THREAD_KEYS_MAX	128
107 #define	_POSIX_THREAD_THREADS_MAX 64
108 #endif
109 
110 #if __POSIX_VISIBLE >= 200112
111 #define	_POSIX_HOST_NAME_MAX	255
112 #define	_POSIX_LOGIN_NAME_MAX	9
113 #define	_POSIX_SS_REPL_MAX	4
114 #define	_POSIX_SYMLINK_MAX	255
115 #define	_POSIX_SYMLOOP_MAX	8
116 #define	_POSIX_TRACE_EVENT_NAME_MAX 30
117 #define	_POSIX_TRACE_NAME_MAX	8
118 #define	_POSIX_TRACE_SYS_MAX	8
119 #define	_POSIX_TRACE_USER_EVENT_MAX 32
120 #define	_POSIX_TTY_NAME_MAX	9
121 
122 #define	_POSIX_RE_DUP_MAX	_POSIX2_RE_DUP_MAX
123 #endif
124 
125 #if __XSI_VISIBLE || __POSIX_VISIBLE >= 200809
126 #define	NL_ARGMAX		4096	/* max # of position args for printf */
127 #define	NL_MSGMAX		32767
128 #define	NL_SETMAX		255
129 #define	NL_TEXTMAX		2048
130 #endif
131 
132 #if __XSI_VISIBLE
133 #define	_XOPEN_IOV_MAX		16
134 #define	_XOPEN_NAME_MAX		255
135 #define	_XOPEN_PATH_MAX		1024
136 #define	PASS_MAX		128	/* _PASSWORD_LEN from <pwd.h> */
137 
138 #define	NL_LANGMAX		31	/* max LANG name length */
139 #define	NL_NMAX			1
140 #endif
141 
142 #define	MB_LEN_MAX		6	/* 31-bit UTF-8 */
143 
144 #if __POSIX_VISIBLE >= 202405
145 #define GETENTROPY_MAX		256
146 #define NSIG_MAX		128	/* _SIG_MAXSIG from <signal.h> */
147 #endif
148 
149 #include <sys/limits.h>
150 
151 #if __POSIX_VISIBLE
152 #include <sys/syslimits.h>
153 #endif
154 
155 #endif /* !_LIMITS_H_ */
156