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) 1982, 1986, 1991, 1993, 1994
    3  *      The Regents of the University of California.  All rights reserved.
    4  * (c) UNIX System Laboratories, Inc.
    5  * All or some portions of this file are derived from material licensed
    6  * to the University of California by American Telephone and Telegraph
    7  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
    8  * the permission of UNIX System Laboratories, Inc.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *      This product includes software developed by the University of
   21  *      California, Berkeley and its contributors.
   22  * 4. Neither the name of the University nor the names of its contributors
   23  *    may be used to endorse or promote products derived from this software
   24  *    without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   36  * SUCH DAMAGE.
   37  *
   38  *      @(#)types.h     8.6 (Berkeley) 2/19/95
   39  * $FreeBSD: src/sys/sys/types.h,v 1.40.2.2 2001/04/21 14:53:06 ume Exp $
   40  */
   41 
   42 #ifndef _SYS_TYPES_H_
   43 #define _SYS_TYPES_H_
   44 
   45 #ifndef _SYS_CDEFS_H_
   46 #include <sys/cdefs.h>
   47 #endif
   48 #ifndef _STDINT_H_
   49 #include <stdint.h>
   50 #endif
   51 #include <machine/stdarg.h>
   52 #include <machine/endian.h>
   53 #ifndef _MACHINE_TYPES_H_
   54 #include <machine/types.h>
   55 #endif
   56 #ifndef _SYS_STDINT_H_
   57 #include <sys/stdint.h>
   58 #endif
   59 #ifndef _SYS__PTHREADTYPES_H_
   60 #include <sys/_pthreadtypes.h>
   61 #endif
   62 
   63 #ifndef _POSIX_SOURCE
   64 typedef unsigned char   u_char;
   65 typedef unsigned short  u_short;
   66 typedef unsigned int    u_int;
   67 typedef unsigned long   u_long;
   68 
   69 typedef unsigned char   unchar;         /* Sys V compatibility */
   70 typedef unsigned short  ushort;         /* Sys V compatibility */
   71 typedef unsigned int    uint;           /* Sys V compatibility */
   72 typedef unsigned long   ulong;          /* Sys V compatibility */
   73 #endif
   74 
   75 typedef __uint8_t       u_int8_t;
   76 typedef __uint16_t      u_int16_t;
   77 typedef __uint32_t      u_int32_t;
   78 typedef __uint64_t      u_int64_t;
   79 typedef __uint64_t      u_quad_t;       /* quads */
   80 typedef __int64_t       quad_t;
   81 typedef quad_t *        qaddr_t;
   82 
   83 typedef __int64_t       blkcnt_t;       /* file block count */
   84 typedef __int64_t       blksize_t;      /* block size */
   85 typedef char *          caddr_t;        /* core address */
   86 typedef const char *    c_caddr_t;      /* core address, pointer to const */
   87 typedef volatile char * v_caddr_t;      /* core address, pointer to volatile */
   88 typedef __int32_t       daddr_t;        /* disk address */
   89 typedef __uint32_t      u_daddr_t;      /* unsigned disk address */
   90 typedef __uint32_t      fixpt_t;        /* fixed point number */
   91 typedef __uint64_t      fsblkcnt_t;     /* filesystem block count */
   92 typedef __uint64_t      fsfilcnt_t;     /* filesystem file count */
   93 #ifndef _GID_T_DECLARED
   94 typedef __uint32_t      gid_t;          /* group id */
   95 #define _GID_T_DECLARED
   96 #endif
   97 typedef __int64_t       id_t;           /* general id, can hold gid/pid/uid_t */
   98 typedef __uint32_t      in_addr_t;      /* base type for internet address */
   99 typedef __uint16_t      in_port_t;
  100 typedef __uint64_t      ino_t;          /* inode number */
  101 typedef long            key_t;          /* IPC key (for Sys V IPC) */
  102 typedef __uint16_t      mode_t;         /* permissions */
  103 typedef __uint32_t      nlink_t;        /* link count */
  104 #ifndef _OFF_T_DECLARED
  105 typedef __off_t         off_t;          /* file offset */
  106 #define _OFF_T_DECLARED
  107 #endif
  108 #ifndef _PID_T_DECLARED
  109 typedef __pid_t         pid_t;          /* process id */
  110 #define _PID_T_DECLARED
  111 #endif
  112 typedef __pid_t         lwpid_t;        /* light weight process id */
  113 typedef quad_t          rlim_t;         /* resource limit */
  114 typedef __segsz_t       segsz_t;        /* segment size */
  115 #ifndef _UID_T_DECLARED
  116 typedef __uint32_t      uid_t;          /* user id */
  117 #define _UID_T_DECLARED
  118 #endif
  119 typedef long            suseconds_t;    /* microseconds (signed) */
  120 typedef __uint32_t      useconds_t;     /* microseconds (unsigned) */
  121 typedef int             mqd_t;          /* message queue descriptor */
  122 
  123 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
  124 
  125 #ifndef __BOOLEAN_T_DEFINED__
  126 #define __BOOLEAN_T_DEFINED__
  127 typedef __boolean_t     boolean_t;
  128 #endif
  129 
  130 typedef u_int64_t       uoff_t;
  131 
  132 #endif
  133 
  134 /*
  135  * XXX cdev_t has different meanings for userland vs kernel compiles.  What
  136  * do we do for _KERNEL_STRUCTURES ?  For the moment stick with the userland
  137  * meaning as being the more compatible solution.
  138  */
  139 
  140 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
  141 
  142 struct cdev;
  143 
  144 typedef u_int32_t       udev_t;         /* device number */
  145 typedef struct cdev     *cdev_t;
  146 
  147 #endif
  148 
  149 /*
  150  * The kernel now uses only udev_t or cdev_t.  Userland uses dev_t.
  151  * Virtual kernel builds needs dev_t in order to include userland header
  152  * files.
  153  */
  154 #ifdef _KERNEL
  155 
  156 #define offsetof(type, field) __offsetof(type, field)
  157 typedef udev_t          dev_t;          /* device number */
  158 
  159 #else
  160 
  161 typedef u_int32_t       dev_t;          /* device number */
  162 #define udev_t dev_t
  163 
  164 #ifndef _POSIX_SOURCE
  165 
  166 /*
  167  * minor() gives a cookie instead of an index since we don't want to
  168  * change the meanings of bits 0-15 or waste time and space shifting
  169  * bits 16-31 for devices that don't use them.
  170  */
  171 #define major(x)        ((int)(((u_int)(x) >> 8)&0xff)) /* major number */
  172 #define minor(x)        ((int)((x)&0xffff00ff))         /* minor number */
  173 #define makedev(x,y)    ((dev_t)(((x) << 8) | (y)))     /* create dev_t */
  174 
  175 #endif /* _POSIX_SOURCE */
  176 
  177 #endif /* !_KERNEL */
  178 
  179 #ifndef _CLOCK_T_DECLARED
  180 #define _CLOCK_T_DECLARED
  181 typedef __clock_t       clock_t;
  182 #endif
  183 
  184 #ifndef _CLOCKID_T_DECLARED
  185 #define _CLOCKID_T_DECLARED
  186 typedef __clockid_t     clockid_t;
  187 #endif
  188 
  189 #ifndef _SIZE_T_DECLARED
  190 #define _SIZE_T_DECLARED
  191 typedef __size_t        size_t;
  192 #endif
  193 
  194 #ifndef _SSIZE_T_DECLARED
  195 #define _SSIZE_T_DECLARED
  196 typedef __ssize_t       ssize_t;
  197 #endif
  198 
  199 #ifndef _TIME_T_DECLARED
  200 #define _TIME_T_DECLARED
  201 typedef __time_t        time_t;
  202 #endif
  203 
  204 #ifndef _TIMER_T_DECLARED
  205 #define _TIMER_T_DECLARED
  206 typedef __timer_t       timer_t;
  207 #endif
  208 
  209 #ifdef __BSD_VISIBLE
  210 
  211 #include <sys/fd_set.h>
  212 #include <sys/_timeval.h>
  213 
  214 #define NBBY 8          /* number of bits in a byte */
  215 /*
  216  * These declarations belong elsewhere, but are repeated here and in
  217  * <stdio.h> to give broken programs a better chance of working with
  218  * 64-bit off_t's.
  219  */
  220 #ifndef _KERNEL
  221 __BEGIN_DECLS
  222 #ifndef _FTRUNCATE_DECLARED
  223 #define _FTRUNCATE_DECLARED
  224 int      ftruncate (int, off_t);
  225 #endif
  226 #ifndef _LSEEK_DECLARED
  227 #define _LSEEK_DECLARED
  228 off_t    lseek (int, off_t, int);
  229 #endif
  230 #ifndef _MMAP_DECLARED
  231 #define _MMAP_DECLARED
  232 void *   mmap (void *, size_t, int, int, int, off_t);
  233 #endif
  234 #ifndef _TRUNCATE_DECLARED
  235 #define _TRUNCATE_DECLARED
  236 int      truncate (const char *, off_t);
  237 #endif
  238 __END_DECLS
  239 #endif /* !_KERNEL */
  240 
  241 #endif /* __BSD_VISIBLE */
  242 
  243 /*
  244  * rune_t is declared to be an ``int'' instead of the more natural
  245  * ``unsigned long'' or ``long''.  Two things are happening here.  It is not
  246  * unsigned so that EOF (-1) can be naturally assigned to it and used.  Also,
  247  * it looks like 10646 will be a 31 bit standard.  This means that if your
  248  * ints cannot hold 32 bits, you will be in trouble.  The reason an int was
  249  * chosen over a long is that the is*() and to*() routines take ints (says
  250  * ANSI C), but they use __ct_rune_t instead of int.
  251  *
  252  * NOTE: rune_t is not covered by ANSI nor other standards, and should not
  253  * be instantiated outside of lib/libc/locale.  Use wchar_t.  wint_t and
  254  * rune_t must be the same type.  Also, wint_t should be able to hold all
  255  * members of the largest character set plus one extra value (WEOF), and
  256  * must be at least 16 bits.
  257  */
  258 typedef int             __ct_rune_t;    /* arg type for ctype funcs */
  259 typedef __ct_rune_t     __rune_t;       /* rune_t (see above) */
  260 typedef __ct_rune_t     __wint_t;       /* wint_t (see above) */
  261 
  262 /*
  263  * Also required for locale support
  264  */
  265 typedef int             __nl_item;
  266 
  267 /* Clang already provides these types as built-ins, but only in c++ mode. */
  268 #if !defined(__clang__) || !defined(__cplusplus)
  269 typedef __uint_least16_t        __char16_t;
  270 typedef __uint_least32_t        __char32_t;
  271 #endif
  272 
  273 #endif /* !_SYS_TYPES_H_ */

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