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

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2002 Mike Barcroft <mike@FreeBSD.org>
      * All rights reserved.
      *
      * 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 AUTHOR 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 AUTHOR 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _SYS__TYPES_H_
    #define _SYS__TYPES_H_
    
    #include <sys/cdefs.h>
    
    /*
     * Basic types upon which most other types are built.
     *
     * Note: It would be nice to simply use the compiler-provided __FOO_TYPE__
     * macros. However, in order to do so we have to check that those match the
     * previous typedefs exactly (not just that they have the same size) since any
     * change would be an ABI break. For example, changing `long` to `long long`
     * results in different C++ name mangling.
     */
    typedef signed char             __int8_t;
    typedef unsigned char           __uint8_t;
    typedef short                   __int16_t;
    typedef unsigned short          __uint16_t;
    typedef int                     __int32_t;
    typedef unsigned int            __uint32_t;
    #if __SIZEOF_LONG__ == 8
    typedef long                    __int64_t;
    typedef unsigned long           __uint64_t;
    #elif __SIZEOF_LONG__ == 4
    __extension__
    typedef long long               __int64_t;
    __extension__
    typedef unsigned long long      __uint64_t;
    #else
    #error unsupported long size
    #endif
    
    typedef __int8_t        __int_least8_t;
    typedef __int16_t       __int_least16_t;
    typedef __int32_t       __int_least32_t;
    typedef __int64_t       __int_least64_t;
    typedef __int64_t       __intmax_t;
    typedef __uint8_t       __uint_least8_t;
    typedef __uint16_t      __uint_least16_t;
    typedef __uint32_t      __uint_least32_t;
    typedef __uint64_t      __uint_least64_t;
    typedef __uint64_t      __uintmax_t;
    
    #if __SIZEOF_POINTER__ == 8
    typedef __int64_t       __intptr_t;
    typedef __int64_t       __intfptr_t;
    typedef __uint64_t      __uintptr_t;
    typedef __uint64_t      __uintfptr_t;
    typedef __uint64_t      __vm_offset_t;
    typedef __uint64_t      __vm_size_t;
    #elif __SIZEOF_POINTER__ == 4
    typedef __int32_t       __intptr_t;
    typedef __int32_t       __intfptr_t;
    typedef __uint32_t      __uintptr_t;
    typedef __uint32_t      __uintfptr_t;
    typedef __uint32_t      __vm_offset_t;
    typedef __uint32_t      __vm_size_t;
    #else
    #error unsupported pointer size
    #endif
    
    #if __SIZEOF_SIZE_T__ == 8
    typedef __uint64_t      __size_t;       /* sizeof() */
    typedef __int64_t       __ssize_t;      /* byte count or error */
    #elif __SIZEOF_SIZE_T__ == 4
    typedef __uint32_t      __size_t;       /* sizeof() */
    typedef __int32_t       __ssize_t;      /* byte count or error */
    #else
    #error unsupported size_t size
   #endif
   
   #if __SIZEOF_PTRDIFF_T__ == 8
   typedef __int64_t       __ptrdiff_t;    /* ptr1 - ptr2 */
   #elif __SIZEOF_PTRDIFF_T__ == 4
   typedef __int32_t       __ptrdiff_t;    /* ptr1 - ptr2 */
   #else
   #error unsupported ptrdiff_t size
   #endif
   
   /*
    * Target-dependent type definitions.
    */
   #include <machine/_types.h>
   
   /*
    * Standard type definitions.
    */
   typedef __int32_t       __blksize_t;    /* file block size */
   typedef __int64_t       __blkcnt_t;     /* file block count */
   typedef __int32_t       __clockid_t;    /* clock_gettime()... */
   typedef __uint32_t      __fflags_t;     /* file flags */
   typedef __uint64_t      __fsblkcnt_t;
   typedef __uint64_t      __fsfilcnt_t;
   typedef __uint32_t      __gid_t;
   typedef __int64_t       __id_t;         /* can hold a gid_t, pid_t, or uid_t */
   typedef __uint64_t      __ino_t;        /* inode number */
   typedef long            __key_t;        /* IPC key (for Sys V IPC) */
   typedef __int32_t       __lwpid_t;      /* Thread ID (a.k.a. LWP) */
   typedef __uint16_t      __mode_t;       /* permissions */
   typedef int             __accmode_t;    /* access permissions */
   typedef int             __nl_item;
   typedef __uint64_t      __nlink_t;      /* link count */
   typedef __int64_t       __off_t;        /* file offset */
   typedef __int64_t       __off64_t;      /* file offset (alias) */
   typedef __int32_t       __pid_t;        /* process [group] */
   typedef __int64_t       __sbintime_t;
   typedef __int64_t       __rlim_t;       /* resource limit - intentionally */
                                           /* signed, because of legacy code */
                                           /* that uses -1 for RLIM_INFINITY */
   typedef __uint8_t       __sa_family_t;
   typedef __uint32_t      __socklen_t;
   typedef long            __suseconds_t;  /* microseconds (signed) */
   typedef struct __timer  *__timer_t;     /* timer_gettime()... */
   typedef struct __mq     *__mqd_t;       /* mq_open()... */
   typedef __uint32_t      __uid_t;
   typedef unsigned int    __useconds_t;   /* microseconds (unsigned) */
   typedef int             __cpuwhich_t;   /* which parameter for cpuset. */
   typedef int             __cpulevel_t;   /* level parameter for cpuset. */
   typedef int             __cpusetid_t;   /* cpuset identifier. */
   typedef __int64_t       __daddr_t;      /* bwrite(3), FIOBMAP2, etc */
   
   /*
    * Unusual type definitions.
    */
   /*
    * rune_t is declared to be an ``int'' instead of the more natural
    * ``unsigned long'' or ``long''.  Two things are happening here.  It is not
    * unsigned so that EOF (-1) can be naturally assigned to it and used.  Also,
    * it looks like 10646 will be a 31 bit standard.  This means that if your
    * ints cannot hold 32 bits, you will be in trouble.  The reason an int was
    * chosen over a long is that the is*() and to*() routines take ints (says
    * ANSI C), but they use __ct_rune_t instead of int.
    *
    * NOTE: rune_t is not covered by ANSI nor other standards, and should not
    * be instantiated outside of lib/libc/locale.  Use wchar_t.  wint_t and
    * rune_t must be the same type.  Also, wint_t should be able to hold all
    * members of the largest character set plus one extra value (WEOF), and
    * must be at least 16 bits.
    */
   typedef int             __ct_rune_t;    /* arg type for ctype funcs */
   typedef __ct_rune_t     __rune_t;       /* rune_t (see above) */
   typedef __ct_rune_t     __wint_t;       /* wint_t (see above) */
   
   /* Clang already provides these types as built-ins, but only in C++ mode. */
   #if !defined(__clang__) || !defined(__cplusplus)
   typedef __uint_least16_t __char16_t;
   typedef __uint_least32_t __char32_t;
   #endif
   /* In C++11, char16_t and char32_t are built-in types. */
   #if defined(__cplusplus) && __cplusplus >= 201103L
   #define _CHAR16_T_DECLARED
   #define _CHAR32_T_DECLARED
   #endif
   
   typedef struct {
           long long __max_align1 __aligned(_Alignof(long long));
   #ifndef _STANDALONE
           long double __max_align2 __aligned(_Alignof(long double));
   #endif
   } __max_align_t;
   
   typedef __uint64_t      __dev_t;        /* device number */
   
   typedef __uint32_t      __fixpt_t;      /* fixed point number */
   
   /*
    * mbstate_t is an opaque object to keep conversion state during multibyte
    * stream conversions.
    */
   typedef union {
           char            __mbstate8[128];
           __int64_t       _mbstateL;      /* for alignment */
   } __mbstate_t;
   
   typedef __uintmax_t     __rman_res_t;
   
   /*
    * Types for varargs. These are all provided by builtin types these
    * days, so centralize their definition.
    */
   typedef __builtin_va_list       __va_list;      /* internally known to gcc */
   #if !defined(__GNUC_VA_LIST) && !defined(__NO_GNUC_VA_LIST)
   #define __GNUC_VA_LIST
   typedef __va_list               __gnuc_va_list; /* compatibility w/GNU headers*/
   #endif
   
   /*
    * When the following macro is defined, the system uses 64-bit inode numbers.
    * Programs can use this to avoid including <sys/param.h>, with its associated
    * namespace pollution.
    */
   #define __INO64
   
   #endif /* !_SYS__TYPES_H_ */

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