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/_types.h

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2002 Mike Barcroft <mike@FreeBSD.org>
    5  * 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  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/12.0/sys/sys/_types.h 329859 2018-02-23 04:04:25Z imp $
   29  */
   30 
   31 #ifndef _SYS__TYPES_H_
   32 #define _SYS__TYPES_H_
   33 
   34 #include <sys/cdefs.h>
   35 #include <machine/_types.h>
   36 
   37 /*
   38  * Standard type definitions.
   39  */
   40 typedef __int32_t       __blksize_t;    /* file block size */
   41 typedef __int64_t       __blkcnt_t;     /* file block count */
   42 typedef __int32_t       __clockid_t;    /* clock_gettime()... */
   43 typedef __uint32_t      __fflags_t;     /* file flags */
   44 typedef __uint64_t      __fsblkcnt_t;
   45 typedef __uint64_t      __fsfilcnt_t;
   46 typedef __uint32_t      __gid_t;
   47 typedef __int64_t       __id_t;         /* can hold a gid_t, pid_t, or uid_t */
   48 typedef __uint64_t      __ino_t;        /* inode number */
   49 typedef long            __key_t;        /* IPC key (for Sys V IPC) */
   50 typedef __int32_t       __lwpid_t;      /* Thread ID (a.k.a. LWP) */
   51 typedef __uint16_t      __mode_t;       /* permissions */
   52 typedef int             __accmode_t;    /* access permissions */
   53 typedef int             __nl_item;
   54 typedef __uint64_t      __nlink_t;      /* link count */
   55 typedef __int64_t       __off_t;        /* file offset */
   56 typedef __int64_t       __off64_t;      /* file offset (alias) */
   57 typedef __int32_t       __pid_t;        /* process [group] */
   58 typedef __int64_t       __rlim_t;       /* resource limit - intentionally */
   59                                         /* signed, because of legacy code */
   60                                         /* that uses -1 for RLIM_INFINITY */
   61 typedef __uint8_t       __sa_family_t;
   62 typedef __uint32_t      __socklen_t;
   63 typedef long            __suseconds_t;  /* microseconds (signed) */
   64 typedef struct __timer  *__timer_t;     /* timer_gettime()... */
   65 typedef struct __mq     *__mqd_t;       /* mq_open()... */
   66 typedef __uint32_t      __uid_t;
   67 typedef unsigned int    __useconds_t;   /* microseconds (unsigned) */
   68 typedef int             __cpuwhich_t;   /* which parameter for cpuset. */
   69 typedef int             __cpulevel_t;   /* level parameter for cpuset. */
   70 typedef int             __cpusetid_t;   /* cpuset identifier. */
   71 
   72 /*
   73  * Unusual type definitions.
   74  */
   75 /*
   76  * rune_t is declared to be an ``int'' instead of the more natural
   77  * ``unsigned long'' or ``long''.  Two things are happening here.  It is not
   78  * unsigned so that EOF (-1) can be naturally assigned to it and used.  Also,
   79  * it looks like 10646 will be a 31 bit standard.  This means that if your
   80  * ints cannot hold 32 bits, you will be in trouble.  The reason an int was
   81  * chosen over a long is that the is*() and to*() routines take ints (says
   82  * ANSI C), but they use __ct_rune_t instead of int.
   83  *
   84  * NOTE: rune_t is not covered by ANSI nor other standards, and should not
   85  * be instantiated outside of lib/libc/locale.  Use wchar_t.  wint_t and
   86  * rune_t must be the same type.  Also, wint_t should be able to hold all
   87  * members of the largest character set plus one extra value (WEOF), and
   88  * must be at least 16 bits.
   89  */
   90 typedef int             __ct_rune_t;    /* arg type for ctype funcs */
   91 typedef __ct_rune_t     __rune_t;       /* rune_t (see above) */
   92 typedef __ct_rune_t     __wint_t;       /* wint_t (see above) */
   93 
   94 /* Clang already provides these types as built-ins, but only in C++ mode. */
   95 #if !defined(__clang__) || !defined(__cplusplus)
   96 typedef __uint_least16_t __char16_t;
   97 typedef __uint_least32_t __char32_t;
   98 #endif
   99 /* In C++11, char16_t and char32_t are built-in types. */
  100 #if defined(__cplusplus) && __cplusplus >= 201103L
  101 #define _CHAR16_T_DECLARED
  102 #define _CHAR32_T_DECLARED
  103 #endif
  104 
  105 typedef struct {
  106         long long __max_align1 __aligned(_Alignof(long long));
  107 #ifndef _STANDALONE
  108         long double __max_align2 __aligned(_Alignof(long double));
  109 #endif
  110 } __max_align_t;
  111 
  112 typedef __uint64_t      __dev_t;        /* device number */
  113 
  114 typedef __uint32_t      __fixpt_t;      /* fixed point number */
  115 
  116 /*
  117  * mbstate_t is an opaque object to keep conversion state during multibyte
  118  * stream conversions.
  119  */
  120 typedef union {
  121         char            __mbstate8[128];
  122         __int64_t       _mbstateL;      /* for alignment */
  123 } __mbstate_t;
  124 
  125 typedef __uintmax_t     __rman_res_t;
  126 
  127 /*
  128  * Types for varargs. These are all provided by builtin types these
  129  * days, so centralize their definition.
  130  */
  131 #ifdef __GNUCLIKE_BUILTIN_VARARGS
  132 typedef __builtin_va_list       __va_list;      /* internally known to gcc */
  133 #else
  134 #error "No support for your compiler for stdargs"
  135 #endif
  136 #if defined(__GNUC_VA_LIST_COMPATIBILITY) && !defined(__GNUC_VA_LIST) \
  137     && !defined(__NO_GNUC_VA_LIST)
  138 #define __GNUC_VA_LIST
  139 typedef __va_list               __gnuc_va_list; /* compatibility w/GNU headers*/
  140 #endif
  141 
  142 /*
  143  * When the following macro is defined, the system uses 64-bit inode numbers.
  144  * Programs can use this to avoid including <sys/param.h>, with its associated
  145  * namespace pollution.
  146  */
  147 #define __INO64
  148 
  149 #endif /* !_SYS__TYPES_H_ */

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