sysdeps/unix/bsd/bits/sockaddr.h

   1 /* Definition of struct sockaddr_* common members and sizes, BSD version.
   2    Copyright (C) 1995-2019 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 /*
  20  * Never include this file directly; use <sys/socket.h> instead.
  21  */
  22
  23 #ifndef _BITS_SOCKADDR_H
  24 #define _BITS_SOCKADDR_H        1
  25
  26
  27 /* POSIX.1g specifies this type name for the `sa_family' member.  */
  28 typedef unsigned char sa_family_t;
  29
  30 /* This macro is used to declare the initial common members
  31    of the data types used for socket addresses, `struct sockaddr',
  32    `struct sockaddr_in', `struct sockaddr_un', etc.  */
  33
  34 #define __SOCKADDR_COMMON(sa_prefix)    \
  35   unsigned char sa_prefix##len;         \
  36   sa_family_t sa_prefix##family
  37
  38 #define __SOCKADDR_COMMON_SIZE  (2 * sizeof (unsigned char))
  39
  40 #define _HAVE_SA_LEN    1       /* We have the sa_len field.  */
  41
  42 /* Size of struct sockaddr_storage.  */
  43 #define _SS_SIZE 128
  44
  45 #endif  /* bits/sockaddr.h */