The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sys/un.h

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)un.h        8.3 (Berkeley) 2/19/95
   30  * $FreeBSD: releng/11.2/sys/sys/un.h 331722 2018-03-29 02:50:57Z eadler $
   31  */
   32 
   33 #ifndef _SYS_UN_H_
   34 #define _SYS_UN_H_
   35 
   36 #include <sys/cdefs.h>
   37 #include <sys/_types.h>
   38 
   39 #ifndef _SA_FAMILY_T_DECLARED
   40 typedef __sa_family_t   sa_family_t;
   41 #define _SA_FAMILY_T_DECLARED
   42 #endif
   43 
   44 /*
   45  * Definitions for UNIX IPC domain.
   46  */
   47 struct sockaddr_un {
   48         unsigned char   sun_len;        /* sockaddr len including null */
   49         sa_family_t     sun_family;     /* AF_UNIX */
   50         char    sun_path[104];          /* path name (gag) */
   51 };
   52 
   53 #if __BSD_VISIBLE
   54 
   55 /* Socket options. */
   56 #define LOCAL_PEERCRED          1       /* retrieve peer credentials */
   57 #define LOCAL_CREDS             2       /* pass credentials to receiver */
   58 #define LOCAL_CONNWAIT          4       /* connects block until accepted */
   59 
   60 /* Start of reserved space for third-party socket options. */
   61 #define LOCAL_VENDOR            SO_VENDOR
   62 
   63 #ifndef _KERNEL
   64 
   65 /* actual length of an initialized sockaddr_un */
   66 #define SUN_LEN(su) \
   67         (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
   68 
   69 #endif /* !_KERNEL */
   70 
   71 #endif /* __BSD_VISIBLE */
   72 
   73 #endif /* !_SYS_UN_H_ */

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