limits.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1988 AT&T */
/* All Rights Reserved */
#ifndef _LIMITS_H
#define _LIMITS_H
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.34 */
#include <sys/feature_tests.h>
#include <sys/isa_defs.h>
#include <iso/limits_iso.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 */
#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 */
#define IOV_MAX _XOPEN_IOV_MAX
#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 can not include this define, regardless of protection
* by the _POSIX_SOURCE and _POSIX_C_SOURCE flags.
*
* #define NAME_MAX 14
*/
#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 */
#define LOGNAME_MAX 8 /* max # of characters in a login name */
#define TTYNAME_MAX 128 /* max # of characters in a tty name */
#endif /* if defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */
/*
* POSIX.1c Note:
* PTHREAD_STACK_MIN is also defined in <pthread.h>.
*/
#if defined(__EXTENSIONS__) || (_POSIX_C_SOURCE >= 199506L)
#include <sys/unistd.h>
#if !defined(_SIZE_T) || __cplusplus >= 199711L
#define _SIZE_T
#if defined(_LP64) || defined(_I32LPx)
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 */