sysdeps/generic/gnu/types.h

   1 /* Copyright (C) 1991, 92, 94, 95, 96 Free Software Foundation, Inc.
   2 This file is part of the GNU C Library.
   3
   4 The GNU C Library is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU Library General Public License as
   6 published by the Free Software Foundation; either version 2 of the
   7 License, or (at your option) any later version.
   8
   9 The GNU C Library is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with the GNU C Library; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  17 Cambridge, MA 02139, USA.  */
  18
  19 #ifndef _GNU_TYPES_H
  20
  21 #define _GNU_TYPES_H    1
  22
  23
  24 /* Convenience types.  */
  25 typedef unsigned char __u_char;
  26 typedef unsigned short __u_short;
  27 typedef unsigned int __u_int;
  28 typedef unsigned long __u_long;
  29 #ifdef __GNUC__
  30 typedef unsigned long long int __u_quad_t;
  31 typedef long long int __quad_t;
  32 typedef __quad_t *__qaddr_t;
  33 #else
  34 typedef struct
  35 {
  36   long val[2];
  37 } __quad_t;
  38 typedef struct
  39 {
  40   __u_long val[2];
  41 } __u_quad_t;
  42 #endif
  43 typedef int __dev_t;            /* Type of device numbers.  */
  44 typedef unsigned int __uid_t;   /* Type of user identifications.  */
  45 typedef unsigned int __gid_t;   /* Type of group identifications.  */
  46 typedef unsigned int __ino_t;   /* Type of file serial numbers.  */
  47 typedef unsigned int __mode_t;  /* Type of file attribute bitmasks.  */
  48 typedef unsigned short int __nlink_t; /* Type of file link counts.  */
  49 typedef long int __off_t;       /* Type of file sizes and offsets.  */
  50 typedef int __pid_t;            /* Type of process identifications.  */
  51 typedef int __ssize_t;          /* Type of a byte count, or error.  */
  52 typedef __u_quad_t __fsid_t;    /* Type of file system IDs.  */
  53 typedef long int __clock_t;     /* Type of CPU usage counts.  */
  54
  55 /* Everythin' else.  */
  56 typedef long int __daddr_t;     /* The type of a disk address.  */
  57 typedef char *__caddr_t;
  58 typedef long int __time_t;
  59 typedef long int __swblk_t;     /* Type of a swap block maybe?  */
  60 typedef long int __key_t;       /* Type of an IPC key */
  61 \f
  62 /* fd_set for select.  */
  63
  64 /* Number of descriptors that can fit in an `fd_set'.  */
  65 #define __FD_SETSIZE    256
  66
  67 /* It's easier to assume 8-bit bytes than to get CHAR_BIT.  */
  68 #define __NFDBITS       (sizeof (unsigned long int) * 8)
  69 #define __FDELT(d)      ((d) / __NFDBITS)
  70 #define __FDMASK(d)     (1 << ((d) % __NFDBITS))
  71
  72 typedef struct
  73   {
  74     /* Some braindead old software uses this member name.  */
  75     unsigned long int fds_bits[(__FD_SETSIZE + (__NFDBITS - 1)) / __NFDBITS];
  76   } __fd_set;
  77
  78 typedef unsigned long __fd_mask;
  79
  80 /* This line MUST be split!  Otherwise m4 will not change it.  */
  81 #define __FD_ZERO(set)  \
  82   ((void) memset ((__ptr_t) (set), 0, sizeof (fd_set)))
  83 #define __FD_SET(d, set)        ((set)->fds_bits[__FDELT(d)] |= __FDMASK(d))
  84 #define __FD_CLR(d, set)        ((set)->fds_bits[__FDELT(d)] &= ~__FDMASK(d))
  85 #define __FD_ISSET(d, set)      ((set)->fds_bits[__FDELT(d)] & __FDMASK(d))
  86
  87 #ifdef __USE_SVID
  88 typedef long int key_t;
  89 #endif
  90
  91 #endif /* gnu/types.h */