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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 31 #ifndef _LIMITS_H 32 #define _LIMITS_H 33 34 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.34 */ 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 #define LOGNAME_MAX 8 /* max # of characters in a login name */ 294 #define TTYNAME_MAX 128 /* max # of characters in a tty name */ 295 296 #endif /* if defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */ 297 298 /* 299 * POSIX.1c Note: 300 * PTHREAD_STACK_MIN is also defined in <pthread.h>. 301 */ 302 #if defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L) 303 #include <sys/unistd.h> 304 305 #if !defined(_SIZE_T) || __cplusplus >= 199711L 306 #define _SIZE_T 307 #if defined(_LP64) || defined(_I32LPx) 308 typedef unsigned long size_t; /* size of something in bytes */ 309 #else 310 typedef unsigned int size_t; /* (historical version) */ 311 #endif 312 #endif /* _SIZE_T */ 313 314 extern long _sysconf(int); /* System Private interface to sysconf() */ 315 316 #define PTHREAD_STACK_MIN ((size_t)_sysconf(_SC_THREAD_STACK_MIN)) 317 /* Added for UNIX98 conformance */ 318 #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS 319 #define PTHREAD_KEYS_MAX _POSIX_THREAD_KEYS_MAX 320 #define PTHREAD_THREADS_MAX _POSIX_THREAD_THREADS_MAX 321 #endif /* defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L) */ 322 323 #ifdef __cplusplus 324 } 325 #endif 326 327 #endif /* _LIMITS_H */ 328