freebsd-nq/sys/sys/un.h
John Baldwin 0d25fab44d Add placeholder constants to reserve a portion of the socket option
name space for use by downstream vendors to add custom options.

MFC after:	2 weeks
2013-02-01 15:32:20 +00:00

74 lines
2.5 KiB
C

/*-
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)un.h 8.3 (Berkeley) 2/19/95
* $FreeBSD$
*/
#ifndef _SYS_UN_H_
#define _SYS_UN_H_
#include <sys/cdefs.h>
#include <sys/_types.h>
#ifndef _SA_FAMILY_T_DECLARED
typedef __sa_family_t sa_family_t;
#define _SA_FAMILY_T_DECLARED
#endif
/*
* Definitions for UNIX IPC domain.
*/
struct sockaddr_un {
unsigned char sun_len; /* sockaddr len including null */
sa_family_t sun_family; /* AF_UNIX */
char sun_path[104]; /* path name (gag) */
};
#if __BSD_VISIBLE
/* Socket options. */
#define LOCAL_PEERCRED 1 /* retrieve peer credentials */
#define LOCAL_CREDS 2 /* pass credentials to receiver */
#define LOCAL_CONNWAIT 4 /* connects block until accepted */
/* Start of reserved space for third-party socket options. */
#define LOCAL_VENDOR SO_VENDOR
#ifndef _KERNEL
/* actual length of an initialized sockaddr_un */
#define SUN_LEN(su) \
(sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
#endif /* !_KERNEL */
#endif /* __BSD_VISIBLE */
#endif /* !_SYS_UN_H_ */