/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright (c) 2013 Gary Mills * Copyright 2017 RackTop Systems. * * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. * Copyright 2015 Joyent, Inc. All rights reserved. */ /* Copyright (c) 1988 AT&T */ /* All Rights Reserved */ #ifndef _LIMITS_H #define _LIMITS_H #include <sys/feature_tests.h> #include <sys/isa_defs.h> #include <iso/limits_iso.h> #include <sys/limits.h> /* * Include fixed width type limits as proposed by the ISO/JTC1/SC22/WG14 C * committee's working draft for the revision of the current ISO C standard, * ISO/IEC 9899:1990 Programming language - C. These are not currently * required by any standard but constitute a useful, general purpose set * of type definitions and limits which is namespace clean with respect to * all standards. */ #if defined(__EXTENSIONS__) || !defined(_STRICT_STDC) || \ defined(__XOPEN_OR_POSIX) #include <sys/int_limits.h> #endif #ifdef __cplusplus extern "C" { #endif #if defined(__EXTENSIONS__) || !defined(_STRICT_STDC) || \ defined(__XOPEN_OR_POSIX) #define SSIZE_MAX LONG_MAX /* max value of an "ssize_t" */ /* * ARG_MAX is calculated as follows: * NCARGS - space for other stuff on initial stack * like aux vectors, saved registers, etc.. */ #define _ARG_MAX32 1048320 /* max length of args to exec 32-bit program */ #define _ARG_MAX64 2096640 /* max length of args to exec 64-bit program */ #ifdef _LP64 #define ARG_MAX _ARG_MAX64 /* max length of arguments to exec */ #else /* _LP64 */ #define ARG_MAX _ARG_MAX32 /* max length of arguments to exec */ #endif /* _LP64 */ /* * These two symbols have their historical values, the actual buffer is * larger. */ #ifndef MAX_CANON #define MAX_CANON 256 /* max bytes in line for canonical processing */ #endif #ifndef MAX_INPUT #define MAX_INPUT 512 /* max size of a char input buffer */ #endif #define NGROUPS_MAX 16 /* max number of groups for a user */ #ifndef PATH_MAX #define PATH_MAX 1024 /* max # of characters in a path name */ #endif #define SYMLINK_MAX 1024 /* max # of characters a symlink can contain */ #define PIPE_BUF 5120 /* max # bytes atomic in write to a pipe */ #ifndef TMP_MAX #define TMP_MAX 17576 /* 26 * 26 * 26 */ #endif /* * POSIX conformant definitions - An implementation may define * other symbols which reflect the actual implementation. Alternate * definitions may not be as restrictive as the POSIX definitions. */ #define _POSIX_AIO_LISTIO_MAX 2 #define _POSIX_AIO_MAX 1 #define _POSIX_ARG_MAX 4096 #ifdef _XPG6 #define _POSIX_CHILD_MAX 25 #else #define _POSIX_CHILD_MAX 6 /* POSIX.1-1990 default */ #endif #define _POSIX_CLOCKRES_MIN 20000000 #define _POSIX_DELAYTIMER_MAX 32 #define _POSIX_LINK_MAX 8 #define _POSIX_MAX_CANON 255 #define _POSIX_MAX_INPUT 255 #define _POSIX_MQ_OPEN_MAX 8 #define _POSIX_MQ_PRIO_MAX 32 #define _POSIX_NAME_MAX 14 #ifdef _XPG6 #define _POSIX_NGROUPS_MAX 8 #define _POSIX_OPEN_MAX 20 #define _POSIX_PATH_MAX 256 #else /* POSIX.1-1990 defaults */ #define _POSIX_NGROUPS_MAX 0 #define _POSIX_OPEN_MAX 16 #define _POSIX_PATH_MAX 255 #endif #define _POSIX_PIPE_BUF 512 #define _POSIX_RTSIG_MAX 8 #define _POSIX_SEM_NSEMS_MAX 256 #define _POSIX_SEM_VALUE_MAX 32767 #define _POSIX_SIGQUEUE_MAX 32 #define _POSIX_SSIZE_MAX 32767 #define _POSIX_STREAM_MAX 8 #define _POSIX_TIMER_MAX 32 #ifdef _XPG6 #define _POSIX_TZNAME_MAX 6 #else #define _POSIX_TZNAME_MAX 3 /* POSIX.1-1990 default */ #endif /* POSIX.1c conformant */ #define _POSIX_LOGIN_NAME_MAX 9 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 #define _POSIX_THREAD_KEYS_MAX 128 #define _POSIX_THREAD_THREADS_MAX 64 #define _POSIX_TTY_NAME_MAX 9 /* UNIX 03 conformant */ #define _POSIX_HOST_NAME_MAX 255 #define _POSIX_RE_DUP_MAX 255 #define _POSIX_SYMLINK_MAX 255 #define _POSIX_SYMLOOP_MAX 8 /* * POSIX.2 and XPG4-XSH4 conformant definitions */ #define _POSIX2_BC_BASE_MAX 99 #define _POSIX2_BC_DIM_MAX 2048 #define _POSIX2_BC_SCALE_MAX 99 #define _POSIX2_BC_STRING_MAX 1000 #define _POSIX2_COLL_WEIGHTS_MAX 2 #define _POSIX2_EXPR_NEST_MAX 32 #define _POSIX2_LINE_MAX 2048 #define _POSIX2_RE_DUP_MAX 255 /* UNIX 03 conformant */ #define _POSIX2_CHARCLASS_NAME_MAX 14 #define BC_BASE_MAX _POSIX2_BC_BASE_MAX #define BC_DIM_MAX _POSIX2_BC_DIM_MAX #define BC_SCALE_MAX _POSIX2_BC_SCALE_MAX #define BC_STRING_MAX _POSIX2_BC_STRING_MAX #define COLL_WEIGHTS_MAX 10 #define EXPR_NEST_MAX _POSIX2_EXPR_NEST_MAX #define LINE_MAX _POSIX2_LINE_MAX #if !defined(_XPG6) #define RE_DUP_MAX _POSIX2_RE_DUP_MAX #else #define RE_DUP_MAX _POSIX_RE_DUP_MAX #endif /* !defined(_XPG6) */ #endif /* defined(__EXTENSIONS__) || !defined(_STRICT_STDC) ... */ #if defined(__EXTENSIONS__) || \ (!defined(_STRICT_STDC) && !defined(_POSIX_C_SOURCE)) || \ defined(_XOPEN_SOURCE) /* * For dual definitions for PASS_MAX and sysconf.c */ #define _PASS_MAX_XPG 8 /* old standards PASS_MAX */ #define _PASS_MAX 256 /* modern Solaris PASS_MAX */ #if defined(_XPG3) && !defined(_XPG6) #define PASS_MAX _PASS_MAX_XPG /* max # of characters in a password */ #else /* XPG6 or just Solaris */ #define PASS_MAX _PASS_MAX /* max # of characters in a password */ #endif /* defined(_XPG3) && !defined(_XPG6) */ #define CHARCLASS_NAME_MAX _POSIX2_CHARCLASS_NAME_MAX #define NL_ARGMAX 9 /* max value of "digit" in calls to the */ /* NLS printf() and scanf() */ #define NL_LANGMAX 14 /* max # of bytes in a LANG name */ #define NL_MSGMAX 32767 /* max message number */ #define NL_NMAX 1 /* max # bytes in N-to-1 mapping characters */ #define NL_SETMAX 255 /* max set number */ #define NL_TEXTMAX 2048 /* max set number */ #define NZERO 20 /* default process priority */ #define WORD_BIT 32 /* # of bits in a "word" or "int" */ #if defined(_LP64) #define LONG_BIT 64 /* # of bits in a "long" */ #else /* _ILP32 */ #define LONG_BIT 32 /* # of bits in a "long" */ #endif /* Marked as LEGACY in SUSv2 and removed in UNIX 03 */ #ifndef _XPG6 #define DBL_DIG 15 /* digits of precision of a "double" */ #define DBL_MAX 1.7976931348623157081452E+308 /* max decimal value */ /* of a double */ #define FLT_DIG 6 /* digits of precision of a "float" */ #define FLT_MAX 3.4028234663852885981170E+38F /* max decimal value */ /* of a "float" */ #endif /* Marked as LEGACY in SUSv1 and removed in SUSv2 */ #ifndef _XPG5 #define DBL_MIN 2.2250738585072013830903E-308 /* min decimal value */ /* of a double */ #define FLT_MIN 1.1754943508222875079688E-38F /* min decimal value */ /* of a float */ #endif #endif /* defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */ #define _XOPEN_IOV_MAX 16 /* max # iovec/process with readv()/writev() */ #define _XOPEN_NAME_MAX 255 /* max # bytes in filename excluding null */ #define _XOPEN_PATH_MAX 1024 /* max # bytes in a pathname */ #if defined(__EXTENSIONS__) || \ (!defined(_STRICT_STDC) && !defined(__XOPEN_OR_POSIX)) #define FCHR_MAX 1048576 /* max size of a file in bytes */ #define PID_MAX 999999 /* max value for a process ID */ /* * POSIX 1003.1a, section 2.9.5, table 2-5 contains [NAME_MAX] and the * related text states: * * A definition of one of the values from Table 2-5 shall be omitted from the * <limits.h> on specific implementations where the corresponding value is * equal to or greater than the stated minimum, but where the value can vary * depending on the file to which it is applied. The actual value supported for * a specific pathname shall be provided by the pathconf() (5.7.1) function. * * This is clear that any machine supporting multiple file system types * and/or a network should not include this define, regardless of protection * by the _POSIX_SOURCE and _POSIX_C_SOURCE flags. We chose to ignore that * and provide it anyway for compatibility with other platforms that don't * follow the spec as precisely as they should. Its usage is discouraged. */ #define NAME_MAX 255 #define CHILD_MAX 25 /* max # of processes per user id */ #ifndef OPEN_MAX #define OPEN_MAX 256 /* max # of files a process can have open */ #endif #define PIPE_MAX 5120 /* max # bytes written to a pipe in a write */ #define STD_BLK 1024 /* # bytes in a physical I/O block */ #define UID_MAX 2147483647 /* max value for a user or group ID */ #define USI_MAX 4294967295 /* max decimal value of an "unsigned" */ #define SYSPID_MAX 1 /* max pid of system processes */ #ifndef SYS_NMLN /* also defined in sys/utsname.h */ #define SYS_NMLN 257 /* 4.0 size of utsname elements */ #endif #ifndef CLK_TCK #if !defined(_CLOCK_T) || __cplusplus >= 199711L #define _CLOCK_T typedef long clock_t; #endif /* !_CLOCK_T */ extern long _sysconf(int); /* System Private interface to sysconf() */ #define CLK_TCK ((clock_t)_sysconf(3)) /* 3 is _SC_CLK_TCK */ #endif /* CLK_TCK */ #ifdef __USE_LEGACY_LOGNAME__ #define LOGNAME_MAX 8 /* max # of characters in a login name */ #else /* __USE_LEGACY_LOGNAME__ */ #define LOGNAME_MAX 32 /* max # of characters in a login name */ /* Increased for illumos */ #endif /* __USE_LEGACY_LOGNAME__ */ #define LOGIN_NAME_MAX (LOGNAME_MAX + 1) /* max buffer size */ #define LOGNAME_MAX_TRAD 8 /* traditional length */ #define LOGIN_NAME_MAX_TRAD (LOGNAME_MAX_TRAD + 1) /* and size */ #define TTYNAME_MAX 128 /* max # of characters in a tty name */ #endif /* if defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */ #if defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L) #include <sys/unistd.h> #if !defined(_SIZE_T) || __cplusplus >= 199711L #define _SIZE_T #if defined(_LP64) typedef unsigned long size_t; /* size of something in bytes */ #else typedef unsigned int size_t; /* (historical version) */ #endif #endif /* _SIZE_T */ extern long _sysconf(int); /* System Private interface to sysconf() */ #define PTHREAD_STACK_MIN ((size_t)_sysconf(_SC_THREAD_STACK_MIN)) /* Added for UNIX98 conformance */ #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS #define PTHREAD_KEYS_MAX _POSIX_THREAD_KEYS_MAX #define PTHREAD_THREADS_MAX _POSIX_THREAD_THREADS_MAX #endif /* defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L) */ #ifdef __cplusplus } #endif #endif /* _LIMITS_H */
