glibc/bits/sockaddr.h

/* Definition of `struct sockaddr_*' common members.  Generic/4.2 BSD version.
   Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/*
 * Never include this file directly; use <sys/socket.h> instead.
 */

#ifndef _BITS_SOCKADDR_H
#define _BITS_SOCKADDR_H	1


/* POSIX.1g specifies this type name for the `sa_family' member.  */
typedef unsigned short int sa_family_t;

/* This macro is used to declare the initial common members
   of the data types used for socket addresses, `struct sockaddr',
   `struct sockaddr_in', `struct sockaddr_un', etc.  */

#define	__SOCKADDR_COMMON(sa_prefix) \
  sa_family_t sa_prefix##family

#define __SOCKADDR_COMMON_SIZE	(sizeof (unsigned short int))

/* Return the length of a `sockaddr' structure.  */
#define SA_LEN(_x)	__libc_sa_len((_x)->sa_family)
extern int __libc_sa_len __P ((sa_family_t __af));

#endif	/* bits/sockaddr.h */