bsd/nfs/xdr_subs.h

   1 /*
   2  * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  29 /*
  30  * Copyright (c) 1989, 1993
  31  *     The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Rick Macklem at The University of Guelph.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *     This product includes software developed by the University of
  47  *     California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *     @(#)xdr_subs.h  8.3 (Berkeley) 3/30/95
  65  * FreeBSD-Id: xdr_subs.h,v 1.9 1997/02/22 09:42:53 peter Exp $
  66  */
  67
  68
  69
  70 #ifndef _NFS_XDR_SUBS_H_
  71 #define _NFS_XDR_SUBS_H_
  72
  73 #include <sys/appleapiopts.h>
  74
  75 #ifdef __APPLE_API_PRIVATE
  76 /*
  77  * Macros used for conversion to/from xdr representation by nfs...
  78  * These use the MACHINE DEPENDENT routines ntohl, htonl
  79  * As defined by "XDR: External Data Representation Standard" RFC1014
  80  *
  81  * To simplify the implementation, we use ntohl/htonl even on big-endian
  82  * machines, and count on them being `#define'd away.  Some of these
  83  * might be slightly more efficient as quad_t copies on a big-endian,
  84  * but we cannot count on their alignment anyway.
  85  */
  86
  87 #define fxdr_unsigned(t, v)     ((t)ntohl((long)(v)))
  88 #define txdr_unsigned(v)        (htonl((long)(v)))
  89
  90 #define fxdr_hyper(f, t) { \
  91         ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \
  92         ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \
  93 }
  94 #define txdr_hyper(f, t) { \
  95         ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \
  96         ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \
  97 }
  98
  99 #endif /* __APPLE_API_PRIVATE */
 100 #endif /* _NFS_XDR_SUBS_H_ */