/* $OpenBSD: limits.h,v 1.6 2005/12/13 00:35:23 millert Exp $ */ /* * Copyright (c) 2002 Marc Espie. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _SYS_LIMITS_H_ #define _SYS_LIMITS_H_ #include #include /* Common definitions for limits.h. */ /* * is meant to describe a specific architecture, * but to be a safe include, that doesn't ever define anything that is * user-visible (only typedefs and #define names that stays in the __xxx * namespace). * * __machine_has_unsigned_chars (default is signed chars) * __FLT_xxx/__DBL_xxx non standard values for floating * points limits. */ #include /* Legacy */ #include #define CHAR_BIT 8 /* number of bits in a char */ #define SCHAR_MAX 0x7f /* max value for a signed char */ #define SCHAR_MIN (-0x7f-1) /* min value for a signed char */ #define UCHAR_MAX 0xffU /* max value for an unsigned char */ #ifdef __machine_has_unsigned_chars # define CHAR_MIN 0 /* min value for a char */ # define CHAR_MAX 0xff /* max value for a char */ #else # define CHAR_MAX 0x7f # define CHAR_MIN (-0x7f-1) #endif #define USHRT_MAX 0xffffU /* max value for an unsigned short */ #define SHRT_MAX 0x7fff /* max value for a short */ #define SHRT_MIN (-0x7fff-1) /* min value for a short */ #define UINT_MAX 0xffffffffU /* max value for an unsigned int */ #define INT_MAX 0x7fffffff /* max value for an int */ #define INT_MIN (-0x7fffffff-1) /* min value for an int */ #ifdef __LP64__ # define ULONG_MAX 0xffffffffffffffffUL /* max value for unsigned long */ # define LONG_MAX 0x7fffffffffffffffL /* max value for a signed long */ # define LONG_MIN (-0x7fffffffffffffffL-1) /* min value for a signed long */ #else # define ULONG_MAX 0xffffffffUL /* max value for an unsigned long */ # define LONG_MAX 0x7fffffffL /* max value for a long */ # define LONG_MIN (-0x7fffffffL-1)/* min value for a long */ #endif #if __BSD_VISIBLE || __ISO_C_VISIBLE >= 1999 # define ULLONG_MAX 0xffffffffffffffffULL /* max value for unsigned long long */ # define LLONG_MAX 0x7fffffffffffffffLL /* max value for a signed long long */ # define LLONG_MIN (-0x7fffffffffffffffLL-1) /* min value for a signed long long */ #endif #if __BSD_VISIBLE # define UID_MAX UINT_MAX /* max value for a uid_t */ # define GID_MAX UINT_MAX /* max value for a gid_t */ #endif #ifdef __LP64__ # define LONG_BIT 64 #else # define LONG_BIT 32 #endif /* float.h defines these as well */ # if !defined(DBL_DIG) # if defined(__DBL_DIG) # define DBL_DIG __DBL_DIG # define DBL_MAX __DBL_MAX # define DBL_MIN __DBL_MIN # define FLT_DIG __FLT_DIG # define FLT_MAX __FLT_MAX # define FLT_MIN __FLT_MIN # else # define DBL_DIG 15 # define DBL_MAX 1.7976931348623157E+308 # define DBL_MIN 2.2250738585072014E-308 # define FLT_DIG 6 # define FLT_MAX 3.40282347E+38F # define FLT_MIN 1.17549435E-38F # endif # endif /* Bionic: the following has been optimized out from our processed kernel headers */ #define CHILD_MAX 999 #define OPEN_MAX 256 /* Bionic-specific definitions */ #define _POSIX_VERSION 200112L /* Posix C language bindings version */ #define _POSIX2_VERSION -1 /* we don't support Posix command-line tools */ #define _POSIX2_C_VERSION _POSIX_VERSION #define _XOPEN_VERSION 500 /* by Posix definition */ #define _XOPEN_XCU_VERSION -1 /* we don't support command-line utilities */ /* tell what we implement legacy stuff when appropriate */ #if _POSIX_VERSION > 0 #define _XOPEN_XPG2 1 #define _XOPEN_XPG3 1 #define _XOPEN_XPG4 1 #define _XOPEN_UNIX 1 #endif #define _XOPEN_ENH_I18N -1 /* we don't support internationalization in the C library */ #define _XOPEN_CRYPT -1 /* don't support X/Open Encryption */ #define _XOPEN_LEGACY -1 /* don't claim we support these, we have some of them but not all */ #define _XOPEN_REALTIME -1 /* we don't support all these functions */ #define _XOPEN_REALTIME_THREADS -1 /* same here */ #define _POSIX_REALTIME_SIGNALS -1 /* for now, this is not supported */ #define _POSIX_PRIORITY_SCHEDULING 1 /* priority scheduling is a Linux feature */ #define _POSIX_TIMERS 1 /* Posix timers are supported */ #undef _POSIX_ASYNCHRONOUS_IO /* aio_ functions are not supported */ #define _POSIX_SYNCHRONIZED_IO 1 /* synchronized i/o supported */ #define _POSIX_FSYNC 1 /* fdatasync() supported */ #define _POSIX_MAPPED_FILES 1 /* mmap-ed files supported */ /* XXX: TODO: complete and check list here */ #define _POSIX_THREADS 1 /* we support threads */ #define _POSIX_THREAD_STACKADDR 1 /* we support thread stack address */ #define _POSIX_THREAD_STACKSIZE 1 /* we support thread stack size */ #define _POSIX_THREAD_PRIO_INHERIT 200112L /* linux feature */ #define _POSIX_THREAD_PRIO_PROTECT 200112L /* linux feature */ #undef _POSIX_PROCESS_SHARED /* we don't support process-shared synchronization */ #undef _POSIX_THREAD_SAFE_FUNCTIONS /* most functions are, but not everything yet */ #define _POSIX_CHOWN_RESTRICTED 1 /* yes, chown requires appropriate privileges */ #define _POSIX_MONOTONIC_CLOCK 0 /* the monotonic clock may be available; ask sysconf */ #define _POSIX_NO_TRUNC 1 /* very long pathnames generate an error */ #define _POSIX_SAVED_IDS 1 /* saved user ids is a Linux feature */ #define _POSIX_JOB_CONTROL 1 /* job control is a Linux feature */ #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4 /* the minimum mandated by POSIX */ #define PTHREAD_DESTRUCTOR_ITERATIONS 4 #define _POSIX_THREAD_KEYS_MAX 128 /* the minimum mandated by POSIX */ /* TODO: our PTHREAD_KEYS_MAX is currently too low to be posix compliant! */ #define _POSIX_THREAD_THREADS_MAX 64 /* the minimum mandated by POSIX */ #define PTHREAD_THREADS_MAX /* bionic has no specific limit */ #endif