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 */ 335