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 /*      $NetBSD: un.h,v 1.33 2003/11/29 10:02:42 matt Exp $     */
    2 
    3 /*
    4  * Copyright (c) 1982, 1986, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)un.h        8.3 (Berkeley) 2/19/95
   32  */
   33 
   34 #ifndef _SYS_UN_H_
   35 #define _SYS_UN_H_
   36 
   37 #include <sys/ansi.h>
   38 #include <sys/featuretest.h>
   39 
   40 #ifndef sa_family_t
   41 typedef __sa_family_t   sa_family_t;
   42 #define sa_family_t     __sa_family_t
   43 #endif
   44 
   45 /*
   46  * Definitions for UNIX IPC domain.
   47  */
   48 struct  sockaddr_un {
   49         u_int8_t        sun_len;        /* total sockaddr length */
   50         sa_family_t     sun_family;     /* AF_LOCAL */
   51         char            sun_path[104];  /* path name (gag) */
   52 };
   53 
   54 /*
   55  * Socket options for UNIX IPC domain.
   56  */
   57 #if defined(_NETBSD_SOURCE)
   58 #define LOCAL_CREDS     0x0001          /* pass credentials to receiver */
   59 #define LOCAL_CONNWAIT  0x0002          /* connects block until accepted */
   60 #endif
   61 
   62 #ifdef _KERNEL
   63 struct unpcb;
   64 struct socket;
   65 
   66 int     unp_attach __P((struct socket *));
   67 int     unp_bind __P((struct unpcb *, struct mbuf *, struct proc *));
   68 int     unp_connect __P((struct socket *, struct mbuf *, struct proc *));
   69 int     unp_connect2 __P((struct socket *, struct socket *, int));
   70 void    unp_detach __P((struct unpcb *));
   71 void    unp_discard __P((struct file *));
   72 void    unp_disconnect __P((struct unpcb *));
   73 void    unp_drop __P((struct unpcb *, int));
   74 void    unp_gc __P((void));
   75 void    unp_mark __P((struct file *));
   76 void    unp_scan __P((struct mbuf *, void (*)(struct file *), int));
   77 void    unp_shutdown __P((struct unpcb *));
   78 int     unp_externalize __P((struct mbuf *));
   79 int     unp_internalize __P((struct mbuf *, struct proc *));
   80 void    unp_dispose __P((struct mbuf *));
   81 int     unp_output __P((struct mbuf *, struct mbuf *, struct unpcb *,
   82             struct proc *));
   83 void    unp_setsockaddr __P((struct unpcb *, struct mbuf *));
   84 void    unp_setpeeraddr __P((struct unpcb *, struct mbuf *));
   85 #else /* !_KERNEL */
   86 
   87 /* actual length of an initialized sockaddr_un */
   88 #if defined(_NETBSD_SOURCE)
   89 #define SUN_LEN(su) \
   90         (sizeof(*(su)) - sizeof((su)->sun_path) + strlen((su)->sun_path))
   91 #endif /* !_XOPEN_SOURCE */
   92 #endif /* _KERNEL */
   93 
   94 #endif /* !_SYS_UN_H_ */

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