1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2013 Gary Mills
24 * Copyright 2017 RackTop Systems.
25 *
26 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
27 * Use is subject to license terms.
28 */
29
30 /* Copyright (c) 1988 AT&T */
31 /* All Rights Reserved */
32
33
34 #ifndef _LIMITS_H
35 #define _LIMITS_H
36
37 #include <sys/feature_tests.h>
38 #include <sys/isa_defs.h>
39 #include <iso/limits_iso.h>
40
41 /*
42 * Include fixed width type limits as proposed by the ISO/JTC1/SC22/WG14 C
43 * committee's working draft for the revision of the current ISO C standard,
44 * ISO/IEC 9899:1990 Programming language - C. These are not currently
45 * required by any standard but constitute a useful, general purpose set
46 * of type definitions and limits which is namespace clean with respect to
47 * all standards.
48 */
49 #if defined(__EXTENSIONS__) || !defined(_STRICT_STDC) || \
50 defined(__XOPEN_OR_POSIX)
51 #include <sys/int_limits.h>
52 #endif
53
54 #ifdef __cplusplus
55 extern "C" {
56 #endif
57
58 #if defined(__EXTENSIONS__) || !defined(_STRICT_STDC) || \
59 defined(__XOPEN_OR_POSIX)
60
61 #define SSIZE_MAX LONG_MAX /* max value of an "ssize_t" */
62
63 /*
64 * ARG_MAX is calculated as follows:
65 * NCARGS - space for other stuff on initial stack
66 * like aux vectors, saved registers, etc..
67 */
68 #define _ARG_MAX32 1048320 /* max length of args to exec 32-bit program */
69 #define _ARG_MAX64 2096640 /* max length of args to exec 64-bit program */
70 #ifdef _LP64
71 #define ARG_MAX _ARG_MAX64 /* max length of arguments to exec */
72 #else /* _LP64 */
73 #define ARG_MAX _ARG_MAX32 /* max length of arguments to exec */
74 #endif /* _LP64 */
75
76 #ifndef MAX_CANON
77 #define MAX_CANON 256 /* max bytes in line for canonical processing */
78 #endif
79
80 #ifndef MAX_INPUT
81 #define MAX_INPUT 512 /* max size of a char input buffer */
82 #endif
83
84 #define NGROUPS_MAX 16 /* max number of groups for a user */
85
86 #ifndef PATH_MAX
87 #define PATH_MAX 1024 /* max # of characters in a path name */
88 #endif
89
90 #define SYMLINK_MAX 1024 /* max # of characters a symlink can contain */
91
92 #define PIPE_BUF 5120 /* max # bytes atomic in write to a pipe */
93
94 #ifndef TMP_MAX
95 #define TMP_MAX 17576 /* 26 * 26 * 26 */
96 #endif
97
98 /*
99 * POSIX conformant definitions - An implementation may define
100 * other symbols which reflect the actual implementation. Alternate
101 * definitions may not be as restrictive as the POSIX definitions.
102 */
103 #define _POSIX_AIO_LISTIO_MAX 2
104 #define _POSIX_AIO_MAX 1
105 #define _POSIX_ARG_MAX 4096
106 #ifdef _XPG6
107 #define _POSIX_CHILD_MAX 25
108 #else
109 #define _POSIX_CHILD_MAX 6 /* POSIX.1-1990 default */
110 #endif
111 #define _POSIX_CLOCKRES_MIN 20000000
112 #define _POSIX_DELAYTIMER_MAX 32
113 #define _POSIX_LINK_MAX 8
114 #define _POSIX_MAX_CANON 255
115 #define _POSIX_MAX_INPUT 255
116 #define _POSIX_MQ_OPEN_MAX 8
117 #define _POSIX_MQ_PRIO_MAX 32
118 #define _POSIX_NAME_MAX 14
119 #ifdef _XPG6
120 #define _POSIX_NGROUPS_MAX 8
121 #define _POSIX_OPEN_MAX 20
122 #define _POSIX_PATH_MAX 256
123 #else /* POSIX.1-1990 defaults */
124 #define _POSIX_NGROUPS_MAX 0
125 #define _POSIX_OPEN_MAX 16
126 #define _POSIX_PATH_MAX 255
127 #endif
128 #define _POSIX_PIPE_BUF 512
129 #define _POSIX_RTSIG_MAX 8
130 #define _POSIX_SEM_NSEMS_MAX 256
131 #define _POSIX_SEM_VALUE_MAX 32767
132 #define _POSIX_SIGQUEUE_MAX 32
133 #define _POSIX_SSIZE_MAX 32767
134 #define _POSIX_STREAM_MAX 8
135 #define _POSIX_TIMER_MAX 32
136 #ifdef _XPG6
137 #define _POSIX_TZNAME_MAX 6
138 #else
139 #define _POSIX_TZNAME_MAX 3 /* POSIX.1-1990 default */
140 #endif
141 /* POSIX.1c conformant */
142 #define _POSIX_LOGIN_NAME_MAX 9
143 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
144 #define _POSIX_THREAD_KEYS_MAX 128
145 #define _POSIX_THREAD_THREADS_MAX 64
146 #define _POSIX_TTY_NAME_MAX 9
147 /* UNIX 03 conformant */
148 #define _POSIX_HOST_NAME_MAX 255
149 #define _POSIX_RE_DUP_MAX 255
150 #define _POSIX_SYMLINK_MAX 255
151 #define _POSIX_SYMLOOP_MAX 8
152
153 /*
154 * POSIX.2 and XPG4-XSH4 conformant definitions
155 */
156
157 #define _POSIX2_BC_BASE_MAX 99
158 #define _POSIX2_BC_DIM_MAX 2048
159 #define _POSIX2_BC_SCALE_MAX 99
160 #define _POSIX2_BC_STRING_MAX 1000
161 #define _POSIX2_COLL_WEIGHTS_MAX 2
162 #define _POSIX2_EXPR_NEST_MAX 32
163 #define _POSIX2_LINE_MAX 2048
164 #define _POSIX2_RE_DUP_MAX 255
165 /* UNIX 03 conformant */
166 #define _POSIX2_CHARCLASS_NAME_MAX 14
167
168 #define BC_BASE_MAX _POSIX2_BC_BASE_MAX
169 #define BC_DIM_MAX _POSIX2_BC_DIM_MAX
170 #define BC_SCALE_MAX _POSIX2_BC_SCALE_MAX
171 #define BC_STRING_MAX _POSIX2_BC_STRING_MAX
172 #define COLL_WEIGHTS_MAX 10
173 #define EXPR_NEST_MAX _POSIX2_EXPR_NEST_MAX
174 #define LINE_MAX _POSIX2_LINE_MAX
175 #if !defined(_XPG6)
176 #define RE_DUP_MAX _POSIX2_RE_DUP_MAX
177 #else
178 #define RE_DUP_MAX _POSIX_RE_DUP_MAX
179 #endif /* !defined(_XPG6) */
180
181 #endif /* defined(__EXTENSIONS__) || !defined(_STRICT_STDC) ... */
182
183 #if defined(__EXTENSIONS__) || \
184 (!defined(_STRICT_STDC) && !defined(_POSIX_C_SOURCE)) || \
185 defined(_XOPEN_SOURCE)
186
187 /*
188 * For dual definitions for PASS_MAX and sysconf.c
189 */
190 #define _PASS_MAX_XPG 8 /* old standards PASS_MAX */
191 #define _PASS_MAX 256 /* modern Solaris PASS_MAX */
192
193 #if defined(_XPG3) && !defined(_XPG6)
194 #define PASS_MAX _PASS_MAX_XPG /* max # of characters in a password */
195 #else /* XPG6 or just Solaris */
196 #define PASS_MAX _PASS_MAX /* max # of characters in a password */
197 #endif /* defined(_XPG3) && !defined(_XPG6) */
198
199 #define CHARCLASS_NAME_MAX _POSIX2_CHARCLASS_NAME_MAX
200
201 #define NL_ARGMAX 9 /* max value of "digit" in calls to the */
202 /* NLS printf() and scanf() */
203 #define NL_LANGMAX 14 /* max # of bytes in a LANG name */
204 #define NL_MSGMAX 32767 /* max message number */
205 #define NL_NMAX 1 /* max # bytes in N-to-1 mapping characters */
206 #define NL_SETMAX 255 /* max set number */
207 #define NL_TEXTMAX 2048 /* max set number */
208 #define NZERO 20 /* default process priority */
209
210 #define WORD_BIT 32 /* # of bits in a "word" or "int" */
211 #if defined(_LP64)
212 #define LONG_BIT 64 /* # of bits in a "long" */
213 #else /* _ILP32 */
214 #define LONG_BIT 32 /* # of bits in a "long" */
215 #endif
216
217 /* Marked as LEGACY in SUSv2 and removed in UNIX 03 */
218 #ifndef _XPG6
219 #define DBL_DIG 15 /* digits of precision of a "double" */
220 #define DBL_MAX 1.7976931348623157081452E+308 /* max decimal value */
221 /* of a double */
222 #define FLT_DIG 6 /* digits of precision of a "float" */
223 #define FLT_MAX 3.4028234663852885981170E+38F /* max decimal value */
224 /* of a "float" */
225 #endif
226
227 /* Marked as LEGACY in SUSv1 and removed in SUSv2 */
228 #ifndef _XPG5
229 #define DBL_MIN 2.2250738585072013830903E-308 /* min decimal value */
230 /* of a double */
231 #define FLT_MIN 1.1754943508222875079688E-38F /* min decimal value */
232 /* of a float */
233 #endif
234
235 #endif /* defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */
236
237 #define _XOPEN_IOV_MAX 16 /* max # iovec/process with readv()/writev() */
238 #define _XOPEN_NAME_MAX 255 /* max # bytes in filename excluding null */
239 #define _XOPEN_PATH_MAX 1024 /* max # bytes in a pathname */
240
241 #define IOV_MAX _XOPEN_IOV_MAX
242
243 #if defined(__EXTENSIONS__) || \
244 (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX))
245
246 #define FCHR_MAX 1048576 /* max size of a file in bytes */
247 #define PID_MAX 999999 /* max value for a process ID */
248
249 /*
250 * POSIX 1003.1a, section 2.9.5, table 2-5 contains [NAME_MAX] and the
251 * related text states:
252 *
253 * A definition of one of the values from Table 2-5 shall be omitted from the
254 * <limits.h> on specific implementations where the corresponding value is
255 * equal to or greater than the stated minimum, but where the value can vary
256 * depending on the file to which it is applied. The actual value supported for
257 * a specific pathname shall be provided by the pathconf() (5.7.1) function.
258 *
259 * This is clear that any machine supporting multiple file system types
260 * and/or a network should not include this define, regardless of protection
261 * by the _POSIX_SOURCE and _POSIX_C_SOURCE flags. We chose to ignore that
262 * and provide it anyway for compatibility with other platforms that don't
263 * follow the spec as precisely as they should. Its usage is discouraged.
264 */
265 #define NAME_MAX 255
266
267 #define CHILD_MAX 25 /* max # of processes per user id */
268 #ifndef OPEN_MAX
269 #define OPEN_MAX 256 /* max # of files a process can have open */
270 #endif
271
272 #define PIPE_MAX 5120 /* max # bytes written to a pipe in a write */
273
274 #define STD_BLK 1024 /* # bytes in a physical I/O block */
275 #define UID_MAX 2147483647 /* max value for a user or group ID */
276 #define USI_MAX 4294967295 /* max decimal value of an "unsigned" */
277 #define SYSPID_MAX 1 /* max pid of system processes */
278
279 #ifndef SYS_NMLN /* also defined in sys/utsname.h */
280 #define SYS_NMLN 257 /* 4.0 size of utsname elements */
281 #endif
282
283 #ifndef CLK_TCK
284
285 #if !defined(_CLOCK_T) || __cplusplus >= 199711L
286 #define _CLOCK_T
287 typedef long clock_t;
288 #endif /* !_CLOCK_T */
289
290 extern long _sysconf(int); /* System Private interface to sysconf() */
291 #define CLK_TCK ((clock_t)_sysconf(3)) /* 3 is _SC_CLK_TCK */
292
293 #endif /* CLK_TCK */
294
295 #ifdef __USE_LEGACY_LOGNAME__
296 #define LOGNAME_MAX 8 /* max # of characters in a login name */
297 #else /* __USE_LEGACY_LOGNAME__ */
298 #define LOGNAME_MAX 32 /* max # of characters in a login name */
299 /* Increased for illumos */
300 #endif /* __USE_LEGACY_LOGNAME__ */
301 #define LOGIN_NAME_MAX (LOGNAME_MAX + 1) /* max buffer size */
302 #define LOGNAME_MAX_TRAD 8 /* traditional length */
303 #define LOGIN_NAME_MAX_TRAD (LOGNAME_MAX_TRAD + 1) /* and size */
304
305 #define TTYNAME_MAX 128 /* max # of characters in a tty name */
306
307 #endif /* if defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */
308
309 #if defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L)
310 #include <sys/unistd.h>
311
312 #if !defined(_SIZE_T) || __cplusplus >= 199711L
313 #define _SIZE_T
314 #if defined(_LP64) || defined(_I32LPx)
315 typedef unsigned long size_t; /* size of something in bytes */
316 #else
317 typedef unsigned int size_t; /* (historical version) */
318 #endif
319 #endif /* _SIZE_T */
320
321 extern long _sysconf(int); /* System Private interface to sysconf() */
322
323 #define PTHREAD_STACK_MIN ((size_t)_sysconf(_SC_THREAD_STACK_MIN))
324 /* Added for UNIX98 conformance */
325 #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS
326 #define PTHREAD_KEYS_MAX _POSIX_THREAD_KEYS_MAX
327 #define PTHREAD_THREADS_MAX _POSIX_THREAD_THREADS_MAX
328 #endif /* defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L) */
329
330 #ifdef __cplusplus
331 }
332 #endif
333
334 #endif /* _LIMITS_H */