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/_sockaddr_storage.h

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    1 /*-
    2  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
    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  *      @(#)socket.h    8.4 (Berkeley) 2/21/94
   30  * $FreeBSD: releng/9.0/sys/sys/_sockaddr_storage.h 196967 2009-09-08 10:39:38Z phk $
   31  */
   32 
   33 #ifndef _SYS__SOCKADDR_STORAGE_H_
   34 #define _SYS__SOCKADDR_STORAGE_H_
   35 
   36 /*
   37  * RFC 2553: protocol-independent placeholder for socket addresses
   38  */
   39 #define _SS_MAXSIZE     128U
   40 #define _SS_ALIGNSIZE   (sizeof(__int64_t))
   41 #define _SS_PAD1SIZE    (_SS_ALIGNSIZE - sizeof(unsigned char) - \
   42                             sizeof(sa_family_t))
   43 #define _SS_PAD2SIZE    (_SS_MAXSIZE - sizeof(unsigned char) - \
   44                             sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE)
   45 
   46 struct sockaddr_storage {
   47         unsigned char   ss_len;         /* address length */
   48         sa_family_t     ss_family;      /* address family */
   49         char            __ss_pad1[_SS_PAD1SIZE];
   50         __int64_t       __ss_align;     /* force desired struct alignment */
   51         char            __ss_pad2[_SS_PAD2SIZE];
   52 };
   53 
   54 #endif /* !_SYS__SOCKADDR_STORAGE_H_ */

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