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  * Copyright (c) 2002 Mike Barcroft <mike@FreeBSD.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD: src/sys/sys/_types.h,v 1.19 2004/06/19 17:58:32 marcel Exp $
   27  */
   28 
   29 #ifndef _SYS__TYPES_H_
   30 #define _SYS__TYPES_H_
   31 
   32 #include <sys/cdefs.h>
   33 #include <machine/_types.h>
   34 
   35 /*
   36  * Standard type definitions.
   37  */
   38 typedef __int32_t       __clockid_t;    /* clock_gettime()... */
   39 typedef __uint32_t      __fflags_t;     /* file flags */
   40 typedef __uint64_t      __fsblkcnt_t;
   41 typedef __uint64_t      __fsfilcnt_t;
   42 typedef __uint32_t      __gid_t;
   43 typedef __int64_t       __id_t;         /* can hold a gid_t, pid_t, or uid_t */
   44 typedef __uint32_t      __ino_t;        /* inode number */
   45 typedef long            __key_t;        /* IPC key (for Sys V IPC) */
   46 typedef __int32_t       __lwpid_t;      /* Thread ID (a.k.a. LWP) */
   47 typedef __uint16_t      __mode_t;       /* permissions */
   48 typedef int             __nl_item;
   49 typedef __uint16_t      __nlink_t;      /* link count */
   50 typedef __int64_t       __off_t;        /* file offset */
   51 typedef __int32_t       __pid_t;        /* process [group] */
   52 typedef __int64_t       __rlim_t;       /* resource limit (XXX not unsigned) */
   53 typedef __uint8_t       __sa_family_t;
   54 typedef __uint32_t      __socklen_t;
   55 typedef long            __suseconds_t;  /* microseconds (signed) */
   56 typedef __int32_t       __timer_t;      /* timer_gettime()... */
   57 typedef __uint32_t      __uid_t;
   58 typedef unsigned int    __useconds_t;   /* microseconds (unsigned) */
   59 
   60 /*
   61  * Unusual type definitions.
   62  */
   63 /*
   64  * rune_t is declared to be an ``int'' instead of the more natural
   65  * ``unsigned long'' or ``long''.  Two things are happening here.  It is not
   66  * unsigned so that EOF (-1) can be naturally assigned to it and used.  Also,
   67  * it looks like 10646 will be a 31 bit standard.  This means that if your
   68  * ints cannot hold 32 bits, you will be in trouble.  The reason an int was
   69  * chosen over a long is that the is*() and to*() routines take ints (says
   70  * ANSI C), but they use __ct_rune_t instead of int.
   71  *
   72  * NOTE: rune_t is not covered by ANSI nor other standards, and should not
   73  * be instantiated outside of lib/libc/locale.  Use wchar_t.  wchar_t and
   74  * rune_t must be the same type.  Also, wint_t must be no narrower than
   75  * wchar_t, and should be able to hold all members of the largest
   76  * character set plus one extra value (WEOF), and must be at least 16 bits.
   77  */
   78 typedef int             __ct_rune_t;    /* arg type for ctype funcs */
   79 typedef __ct_rune_t     __rune_t;       /* rune_t (see above) */
   80 typedef __ct_rune_t     __wchar_t;      /* wchar_t (see above) */
   81 typedef __ct_rune_t     __wint_t;       /* wint_t (see above) */
   82 
   83 typedef __uint32_t      __dev_t;        /* device number */
   84 
   85 typedef __uint32_t      __fixpt_t;      /* fixed point number */
   86 
   87 /*
   88  * mbstate_t is an opaque object to keep conversion state during multibyte
   89  * stream conversions.
   90  */
   91 typedef union {
   92         char            __mbstate8[128];
   93         __int64_t       _mbstateL;      /* for alignment */
   94 } __mbstate_t;
   95 
   96 #endif /* !_SYS__TYPES_H_ */

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