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