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  * SPDX-License-Identifier: BSD-3-Clause
    3  *
    4  * Copyright (c) 1982, 1985, 1986, 1988, 1993, 1994
    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  *      @(#)socket.h    8.4 (Berkeley) 2/21/94
   32  * $FreeBSD: releng/12.0/sys/sys/_sockaddr_storage.h 326023 2017-11-20 19:43:44Z pfg $
   33  */
   34 
   35 #ifndef _SYS__SOCKADDR_STORAGE_H_
   36 #define _SYS__SOCKADDR_STORAGE_H_
   37 
   38 /*
   39  * RFC 2553: protocol-independent placeholder for socket addresses
   40  */
   41 #define _SS_MAXSIZE     128U
   42 #define _SS_ALIGNSIZE   (sizeof(__int64_t))
   43 #define _SS_PAD1SIZE    (_SS_ALIGNSIZE - sizeof(unsigned char) - \
   44                             sizeof(sa_family_t))
   45 #define _SS_PAD2SIZE    (_SS_MAXSIZE - sizeof(unsigned char) - \
   46                             sizeof(sa_family_t) - _SS_PAD1SIZE - _SS_ALIGNSIZE)
   47 
   48 struct sockaddr_storage {
   49         unsigned char   ss_len;         /* address length */
   50         sa_family_t     ss_family;      /* address family */
   51         char            __ss_pad1[_SS_PAD1SIZE];
   52         __int64_t       __ss_align;     /* force desired struct alignment */
   53         char            __ss_pad2[_SS_PAD2SIZE];
   54 };
   55 
   56 #endif /* !_SYS__SOCKADDR_STORAGE_H_ */

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