1/* Copyright (C) 1991-2025 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 Lesser General Public
 6   License as published by the Free Software Foundation; either
 7   version 2.1 of the 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   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library; if not, see
16   <https://www.gnu.org/licenses/>.  */
17
18#ifndef	_SYS_UN_H
19#define	_SYS_UN_H	1
20
21#include <sys/cdefs.h>
22
23/* Get the definition of the macro to define the common sockaddr members.  */
24#include <bits/sockaddr.h>
25
26__BEGIN_DECLS
27
28/* Structure describing the address of an AF_LOCAL (aka AF_UNIX) socket.  */
29struct __attribute_struct_may_alias__ sockaddr_un
30  {
31    __SOCKADDR_COMMON (sun_);
32    char sun_path[108];		/* Path name.  */
33  };
34
35
36#ifdef __USE_MISC
37# include <stddef.h>
38# include <string.h>		/* For prototype of `strlen'.  */
39
40/* Evaluate to actual length of the `sockaddr_un' structure.  */
41# define SUN_LEN(ptr) (offsetof (struct sockaddr_un, sun_path)		      \
42		      + strlen ((ptr)->sun_path))
43#endif
44
45__END_DECLS
46
47#endif	/* sys/un.h  */