1/* $OpenBSD: limits.h,v 1.6 2005/12/13 00:35:23 millert Exp $ */ 2/* 3 * Copyright (c) 2002 Marc Espie. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS 15 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD 18 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26#ifndef _SYS_LIMITS_H_ 27#define _SYS_LIMITS_H_ 28 29#include <sys/cdefs.h> 30#include <linux/limits.h> 31 32/* Common definitions for limits.h. */ 33 34#define CHAR_BIT 8 /* number of bits in a char */ 35 36#define SCHAR_MAX 0x7f /* max value for a signed char */ 37#define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ 38 39#define UCHAR_MAX 0xffU /* max value for an unsigned char */ 40#ifdef __CHAR_UNSIGNED__ 41# define CHAR_MIN 0 /* min value for a char */ 42# define CHAR_MAX 0xff /* max value for a char */ 43#else 44# define CHAR_MAX 0x7f 45# define CHAR_MIN (-0x7f-1) 46#endif 47 48#define USHRT_MAX 0xffffU /* max value for an unsigned short */ 49#define SHRT_MAX 0x7fff /* max value for a short */ 50#define SHRT_MIN (-0x7fff-1) /* min value for a short */ 51 52#define UINT_MAX 0xffffffffU /* max value for an unsigned int */ 53#define INT_MAX 0x7fffffff /* max value for an int */ 54#define INT_MIN (-0x7fffffff-1) /* min value for an int */ 55 56#ifdef __LP64__ 57# define ULONG_MAX 0xffffffffffffffffUL 58 /* max value for unsigned long */ 59# define LONG_MAX 0x7fffffffffffffffL 60 /* max value for a signed long */ 61# define LONG_MIN (-0x7fffffffffffffffL-1) 62 /* min value for a signed long */ 63#else 64# define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ 65# define LONG_MAX 0x7fffffffL /* max value for a long */ 66# define LONG_MIN (-0x7fffffffL-1)/* min value for a long */ 67#endif 68 69#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 70# define ULLONG_MAX 0xffffffffffffffffULL 71 /* max value for unsigned long long */ 72# define LLONG_MAX 0x7fffffffffffffffLL 73 /* max value for a signed long long */ 74# define LLONG_MIN (-0x7fffffffffffffffLL-1) 75 /* min value for a signed long long */ 76#endif 77 78#if __BSD_VISIBLE 79# define UID_MAX UINT_MAX /* max value for a uid_t */ 80# define GID_MAX UINT_MAX /* max value for a gid_t */ 81#endif 82 83 84#ifdef __LP64__ 85# define LONG_BIT 64 86#else 87# define LONG_BIT 32 88#endif 89 90/* float.h defines these as well */ 91# if !defined(DBL_DIG) 92# if defined(__DBL_DIG) 93# define DBL_DIG __DBL_DIG 94# define DBL_MAX __DBL_MAX 95# define DBL_MIN __DBL_MIN 96 97# define FLT_DIG __FLT_DIG 98# define FLT_MAX __FLT_MAX 99# define FLT_MIN __FLT_MIN 100# else 101# define DBL_DIG 15 102# define DBL_MAX 1.7976931348623157E+308 103# define DBL_MIN 2.2250738585072014E-308 104 105# define FLT_DIG 6 106# define FLT_MAX 3.40282347E+38F 107# define FLT_MIN 1.17549435E-38F 108# endif 109# endif 110 111/* Bionic: the following has been optimized out from our processed kernel headers */ 112 113#define CHILD_MAX 999 114#define OPEN_MAX 256 115 116/* Bionic-specific definitions */ 117 118#define _POSIX_VERSION 200112L /* Posix C language bindings version */ 119#define _POSIX2_VERSION -1 /* we don't support Posix command-line tools */ 120#define _POSIX2_C_VERSION _POSIX_VERSION 121#define _XOPEN_VERSION 500 /* by Posix definition */ 122#define _XOPEN_XCU_VERSION -1 /* we don't support command-line utilities */ 123 124/* tell what we implement legacy stuff when appropriate */ 125#if _POSIX_VERSION > 0 126#define _XOPEN_XPG2 1 127#define _XOPEN_XPG3 1 128#define _XOPEN_XPG4 1 129#define _XOPEN_UNIX 1 130#endif 131 132#define _XOPEN_ENH_I18N -1 /* we don't support internationalization in the C library */ 133#define _XOPEN_CRYPT -1 /* don't support X/Open Encryption */ 134#define _XOPEN_LEGACY -1 /* don't claim we support these, we have some of them but not all */ 135#define _XOPEN_REALTIME -1 /* we don't support all these functions */ 136#define _XOPEN_REALTIME_THREADS -1 /* same here */ 137 138#define _POSIX_REALTIME_SIGNALS -1 /* for now, this is not supported */ 139#define _POSIX_PRIORITY_SCHEDULING 1 /* priority scheduling is a Linux feature */ 140#define _POSIX_TIMERS 1 /* Posix timers are supported */ 141#undef _POSIX_ASYNCHRONOUS_IO /* aio_ functions are not supported */ 142#define _POSIX_SYNCHRONIZED_IO 1 /* synchronized i/o supported */ 143#define _POSIX_FSYNC 1 /* fdatasync() supported */ 144#define _POSIX_MAPPED_FILES 1 /* mmap-ed files supported */ 145 146/* XXX: TODO: complete and check list here */ 147 148 149#define _POSIX_THREADS 1 /* we support threads */ 150#define _POSIX_THREAD_STACKADDR 1 /* we support thread stack address */ 151#define _POSIX_THREAD_STACKSIZE 1 /* we support thread stack size */ 152#define _POSIX_THREAD_PRIO_INHERIT 200112L /* linux feature */ 153#define _POSIX_THREAD_PRIO_PROTECT 200112L /* linux feature */ 154 155#undef _POSIX_PROCESS_SHARED /* we don't support process-shared synchronization */ 156#undef _POSIX_THREAD_SAFE_FUNCTIONS /* most functions are, but not everything yet */ 157#define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate privileges */ 158#define _POSIX_MONOTONIC_CLOCK 0 /* the monotonic clock may be available; ask sysconf */ 159#define _POSIX_NO_TRUNC 1 /* very long pathnames generate an error */ 160#define _POSIX_SAVED_IDS 1 /* saved user ids is a Linux feature */ 161#define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */ 162 163#define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 /* the minimum mandated by POSIX */ 164#define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS 165#define _POSIX_THREAD_KEYS_MAX 128 /* the minimum mandated by POSIX */ 166#define PTHREAD_KEYS_MAX _POSIX_THREAD_KEYS_MAX 167#define _POSIX_THREAD_THREADS_MAX 64 /* the minimum mandated by POSIX */ 168#define PTHREAD_THREADS_MAX /* bionic has no specific limit */ 169 170 171#endif 172