The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/limits.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1988, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  * $FreeBSD: stable/12/sys/sys/limits.h 326023 2017-11-20 19:43:44Z pfg $
   32  */
   33 
   34 #ifndef _SYS_LIMITS_H_
   35 #define _SYS_LIMITS_H_
   36 
   37 #include <sys/cdefs.h>
   38 #include <machine/_limits.h>
   39 
   40 #define CHAR_BIT        __CHAR_BIT      /* number of bits in a char */
   41 
   42 #define SCHAR_MAX       __SCHAR_MAX     /* max value for a signed char */
   43 #define SCHAR_MIN       __SCHAR_MIN     /* min value for a signed char */
   44 
   45 #define UCHAR_MAX       __UCHAR_MAX     /* max value for an unsigned char */
   46 
   47 #ifdef __CHAR_UNSIGNED__
   48 #define CHAR_MAX        UCHAR_MAX       /* max value for a char */
   49 #define CHAR_MIN        0               /* min value for a char */
   50 #else
   51 #define CHAR_MAX        SCHAR_MAX
   52 #define CHAR_MIN        SCHAR_MIN
   53 #endif
   54 
   55 #define USHRT_MAX       __USHRT_MAX     /* max value for an unsigned short */
   56 #define SHRT_MAX        __SHRT_MAX      /* max value for a short */
   57 #define SHRT_MIN        __SHRT_MIN      /* min value for a short */
   58 
   59 #define UINT_MAX        __UINT_MAX      /* max value for an unsigned int */
   60 #define INT_MAX         __INT_MAX       /* max value for an int */
   61 #define INT_MIN         __INT_MIN       /* min value for an int */
   62 
   63 #define ULONG_MAX       __ULONG_MAX     /* max for an unsigned long */
   64 #define LONG_MAX        __LONG_MAX      /* max for a long */
   65 #define LONG_MIN        __LONG_MIN      /* min for a long */
   66 
   67 #ifdef __LONG_LONG_SUPPORTED
   68 #define ULLONG_MAX      __ULLONG_MAX    /* max for an unsigned long long */
   69 #define LLONG_MAX       __LLONG_MAX     /* max for a long long */
   70 #define LLONG_MIN       __LLONG_MIN     /* min for a long long */
   71 #endif
   72 
   73 #if __POSIX_VISIBLE || __XSI_VISIBLE
   74 #define SSIZE_MAX       __SSIZE_MAX     /* max value for an ssize_t */
   75 #endif
   76 
   77 #if __POSIX_VISIBLE >= 200112 || __XSI_VISIBLE
   78 #define SIZE_T_MAX      __SIZE_T_MAX    /* max value for a size_t */
   79 
   80 #define OFF_MAX         __OFF_MAX       /* max value for an off_t */
   81 #define OFF_MIN         __OFF_MIN       /* min value for an off_t */
   82 #endif
   83 
   84 #if __BSD_VISIBLE
   85 #define GID_MAX         UINT_MAX        /* max value for a gid_t */
   86 #define UID_MAX         UINT_MAX        /* max value for a uid_t */
   87 
   88 #define UQUAD_MAX       (__UQUAD_MAX)   /* max value for a uquad_t */
   89 #define QUAD_MAX        (__QUAD_MAX)    /* max value for a quad_t */
   90 #define QUAD_MIN        (__QUAD_MIN)    /* min value for a quad_t */
   91 #endif
   92 
   93 #if __XSI_VISIBLE || __POSIX_VISIBLE >= 200809
   94 #define LONG_BIT        __LONG_BIT
   95 #define WORD_BIT        __WORD_BIT
   96 #endif
   97 
   98 #if __POSIX_VISIBLE
   99 #define MQ_PRIO_MAX     64
  100 #endif
  101 
  102 #endif /* !_SYS_LIMITS_H_ */

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