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root/include/sys/types.h

INCLUDED FROM

DEFINITIONS

1. fd_set

   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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)types.h     8.6 (Berkeley) 2/19/95
  35  */
  37 #ifndef _SYS_TYPES_H_
  38 #define _SYS_TYPES_H_
  40 /* Machine type dependent parameters. */
  41 #include <machine/types.h>
  43 typedef unsigned char   u_char;
  44 typedef unsigned short  u_short;
  45 typedef unsigned int    u_int;
  46 typedef unsigned long   u_long;
  48 typedef uint32_t        dev_t;          /* device number */
  49 typedef uint32_t        gid_t;          /* group id */
  50 typedef uint32_t        ino_t;          /* inode number */
  51 typedef uint32_t        mode_t;         /* permissions */
  52 typedef uint32_t        nlink_t;        /* link count */
  53 typedef int32_t         off_t;          /* file offset */
  54 typedef int32_t         pid_t;          /* process id */
  55 typedef uint32_t        uid_t;          /* user id */
  56 typedef unsigned long   rlim_t;         /* resource limit */
  58 #ifndef KERNEL
  59 typedef unsigned long   object_t;
  60 typedef unsigned long   task_t;
  61 typedef unsigned long   thread_t;
  62 typedef unsigned long   mutex_t;
  63 typedef unsigned long   cond_t;
  64 typedef unsigned long   sem_t;
  65 typedef unsigned long   device_t;
  66 #endif /* KERNEL */
  68 #define OBJECT_NULL     ((object_t)0)
  69 #define TASK_NULL         ((task_t)0)
  70 #define THREAD_NULL     ((thread_t)0)
  71 #define MUTEX_NULL       ((mutex_t)0)
  72 #define COND_NULL         ((cond_t)0)
  73 #define SEM_NULL           ((sem_t)0)
  74 #define NODEV           ((device_t)0)
  76 #ifdef KERNEL
  77 typedef void (*dkifn_t)(void);
  78 #endif
  80 #include <sys/endian.h>
  82 #if !defined(_CLOCK_T)
  83 #define _CLOCK_T
  84 typedef unsigned long   clock_t;        /* relative time in a specified resolution */
  85 #endif
  87 #if !defined(_SIZE_T)
  88 #define _SIZE_T
  89 typedef unsigned int    size_t;         /* size of something in bytes */
  90 #endif
  92 #if !defined(_SSIZE_T)
  93 #define _SSIZE_T
  94 typedef int             ssize_t;        /* size of something in bytes */
  95 #endif
  97 #if !defined(_TIME_T)
  98 #define _TIME_T
  99 typedef long            time_t;         /* time of day in seconds */
 100 #endif
 102 #define NBBY    8               /* number of bits in a byte */
 104 #ifndef KERNEL
 105 /*
 106  * Select uses bit masks of file descriptors in longs.  These macros
 107  * manipulate such bit fields (the filesystem macros use chars).
 108  * FD_SETSIZE may be defined by the user, but the default here should
 109  * be enough for most uses.
 110  */
 111 #ifndef FD_SETSIZE
 112 #define FD_SETSIZE      16
 113 #endif
 115 typedef int32_t fd_mask;
 116 #define NFDBITS (sizeof(fd_mask) * NBBY)        /* bits per mask */
 118 #ifndef howmany
 119 #define howmany(x, y)   (((x) + ((y) - 1)) / (y))
 120 #endif
 122 typedef struct fd_set {
fd_mask fds_bits[howmany(FD_SETSIZE, NFDBITS)];
 124 } fd_set;
 126 #define FD_SET(n, p)    ((p)->fds_bits[(n)/NFDBITS] |= (1 << ((n) % NFDBITS)))
 127 #define FD_CLR(n, p)    ((p)->fds_bits[(n)/NFDBITS] &= ~(1 << ((n) % NFDBITS)))
 128 #define FD_ISSET(n, p)  ((p)->fds_bits[(n)/NFDBITS] & (1 << ((n) % NFDBITS)))
 129 #define FD_COPY(f, t)   bcopy(f, t, sizeof(*(f)))
 130 #define FD_ZERO(p)      bzero(p, sizeof(*(p)))
 131 #endif /* !KERNEL */
 133 #endif /* !_SYS_TYPES_H_ */