1/* Definition of struct sockaddr_* common members and sizes, generic version.
2 Copyright (C) 1995-2020 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 <https://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. */
28typedef unsigned short int 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 sa_family_t sa_prefix##family
36
37#define __SOCKADDR_COMMON_SIZE (sizeof (unsigned short int))
38
39/* Size of struct sockaddr_storage. */
40#define _SS_SIZE 128
41
42#endif /* bits/sockaddr.h */
43

source code of include/x86_64-linux-gnu/bits/sockaddr.h