180 lines
6.8 KiB
C
180 lines
6.8 KiB
C
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/* $OpenBSD: limits.h,v 1.6 2005/12/13 00:35:23 millert Exp $ */
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/*
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* Copyright (c) 2002 Marc Espie.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
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* PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_LIMITS_H_
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#define _SYS_LIMITS_H_
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#include <sys/cdefs.h>
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#include <linux/limits.h>
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/* Common definitions for limits.h. */
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/*
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* <machine/internal_types.h> is meant to describe a specific architecture,
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* but to be a safe include, that doesn't ever define anything that is
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* user-visible (only typedefs and #define names that stays in the __xxx
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* namespace).
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*
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* __machine_has_unsigned_chars (default is signed chars)
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* __FLT_xxx/__DBL_xxx non standard values for floating
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* points limits.
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*/
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#include <machine/internal_types.h>
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/* Legacy */
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#include <machine/limits.h>
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#define CHAR_BIT 8 /* number of bits in a char */
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#define SCHAR_MAX 0x7f /* max value for a signed char */
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#define SCHAR_MIN (-0x7f-1) /* min value for a signed char */
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#define UCHAR_MAX 0xffU /* max value for an unsigned char */
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#ifdef __machine_has_unsigned_chars
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# define CHAR_MIN 0 /* min value for a char */
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# define CHAR_MAX 0xff /* max value for a char */
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#else
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# define CHAR_MAX 0x7f
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# define CHAR_MIN (-0x7f-1)
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#endif
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#define USHRT_MAX 0xffffU /* max value for an unsigned short */
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#define SHRT_MAX 0x7fff /* max value for a short */
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#define SHRT_MIN (-0x7fff-1) /* min value for a short */
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#define UINT_MAX 0xffffffffU /* max value for an unsigned int */
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#define INT_MAX 0x7fffffff /* max value for an int */
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#define INT_MIN (-0x7fffffff-1) /* min value for an int */
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#ifdef __LP64__
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# define ULONG_MAX 0xffffffffffffffffUL
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/* max value for unsigned long */
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# define LONG_MAX 0x7fffffffffffffffL
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/* max value for a signed long */
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# define LONG_MIN (-0x7fffffffffffffffL-1)
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/* min value for a signed long */
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#else
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# define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */
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# define LONG_MAX 0x7fffffffL /* max value for a long */
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# define LONG_MIN (-0x7fffffffL-1)/* min value for a long */
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#endif
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#if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999
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# define ULLONG_MAX 0xffffffffffffffffULL
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/* max value for unsigned long long */
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# define LLONG_MAX 0x7fffffffffffffffLL
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/* max value for a signed long long */
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# define LLONG_MIN (-0x7fffffffffffffffLL-1)
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/* min value for a signed long long */
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#endif
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#if __BSD_VISIBLE
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# define UID_MAX UINT_MAX /* max value for a uid_t */
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# define GID_MAX UINT_MAX /* max value for a gid_t */
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#endif
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#ifdef __LP64__
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# define LONG_BIT 64
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#else
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# define LONG_BIT 32
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#endif
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/* float.h defines these as well */
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# if !defined(DBL_DIG)
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# if defined(__DBL_DIG)
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# define DBL_DIG __DBL_DIG
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# define DBL_MAX __DBL_MAX
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# define DBL_MIN __DBL_MIN
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# define FLT_DIG __FLT_DIG
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# define FLT_MAX __FLT_MAX
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# define FLT_MIN __FLT_MIN
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# else
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# define DBL_DIG 15
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# define DBL_MAX 1.7976931348623157E+308
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# define DBL_MIN 2.2250738585072014E-308
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# define FLT_DIG 6
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# define FLT_MAX 3.40282347E+38F
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# define FLT_MIN 1.17549435E-38F
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# endif
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# endif
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/* Bionic: the following has been optimized out from our processed kernel headers */
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#define CHILD_MAX 999
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#define OPEN_MAX 256
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/* Bionic-specific definitions */
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#define _POSIX_VERSION 200112L /* Posix C language bindings version */
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#define _POSIX2_VERSION -1 /* we don't support Posix command-line tools */
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#define _POSIX2_C_VERSION _POSIX_VERSION
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#define _XOPEN_VERSION 500 /* by Posix definition */
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#define _XOPEN_XCU_VERSION -1 /* we don't support command-line utilities */
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/* tell what we implement legacy stuff when appropriate */
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#if _POSIX_VERSION > 0
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#define _XOPEN_XPG2 1
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#define _XOPEN_XPG3 1
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#define _XOPEN_XPG4 1
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#define _XOPEN_UNIX 1
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#endif
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#define _XOPEN_ENH_I18N -1 /* we don't support internationalization in the C library */
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#define _XOPEN_CRYPT -1 /* don't support X/Open Encryption */
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#define _XOPEN_LEGACY -1 /* don't claim we support these, we have some of them but not all */
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#define _XOPEN_REALTIME -1 /* we don't support all these functions */
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#define _XOPEN_REALTIME_THREADS -1 /* same here */
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#define _POSIX_REALTIME_SIGNALS -1 /* for now, this is not supported */
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#define _POSIX_PRIORITY_SCHEDULING 1 /* priority scheduling is a Linux feature */
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#define _POSIX_TIMERS 1 /* Posix timers are supported */
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#undef _POSIX_ASYNCHRONOUS_IO /* aio_ functions are not supported */
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#define _POSIX_SYNCHRONIZED_IO 1 /* synchronized i/o supported */
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#define _POSIX_FSYNC 1 /* fdatasync() supported */
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#define _POSIX_MAPPED_FILES 1 /* mmap-ed files supported */
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/* XXX: TODO: complete and check list here */
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#define _POSIX_THREADS 1 /* we support threads */
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#define _POSIX_THREAD_STACKADDR 1 /* we support thread stack address */
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#define _POSIX_THREAD_STACKSIZE 1 /* we support thread stack size */
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#define _POSIX_THREAD_PRIO_INHERIT 200112L /* linux feature */
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#define _POSIX_THREAD_PRIO_PROTECT 200112L /* linux feature */
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#undef _POSIX_PROCESS_SHARED /* we don't support process-shared synchronization */
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#undef _POSIX_THREAD_SAFE_FUNCTIONS /* most functions are, but not everything yet */
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#define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate priviledges */
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#define _POSIX_NO_TRUNC 1 /* very long pathnames generate an error */
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#define _POSIX_SAVED_IDS 1 /* saved user ids is a Linux feature */
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#define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */
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#endif
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