bsd/nfs/xdr_subs.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1989, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * The NEXTSTEP Software License Agreement specifies the terms
  28  * and conditions for redistribution.
  29  *
  30  * This code is derived from software contributed to Berkeley by
  31  * Rick Macklem at The University of Guelph.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)xdr_subs.h  8.3 (Berkeley) 3/30/95
  62  * FreeBSD-Id: xdr_subs.h,v 1.9 1997/02/22 09:42:53 peter Exp $
  63  */
  64
  65
  66 #ifndef _NFS_XDR_SUBS_H_
  67 #define _NFS_XDR_SUBS_H_
  68
  69 /*
  70  * Macros used for conversion to/from xdr representation by nfs...
  71  * These use the MACHINE DEPENDENT routines ntohl, htonl
  72  * As defined by "XDR: External Data Representation Standard" RFC1014
  73  *
  74  * To simplify the implementation, we use ntohl/htonl even on big-endian
  75  * machines, and count on them being `#define'd away.  Some of these
  76  * might be slightly more efficient as quad_t copies on a big-endian,
  77  * but we cannot count on their alignment anyway.
  78  */
  79
  80 #define fxdr_unsigned(t, v)     ((t)ntohl((long)(v)))
  81 #define txdr_unsigned(v)        (htonl((long)(v)))
  82
  83 #define fxdr_nfsv2time(f, t) { \
  84         (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
  85         if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
  86                 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
  87         else \
  88                 (t)->tv_nsec = 0; \
  89 }
  90 #define txdr_nfsv2time(f, t) { \
  91         ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
  92         if ((f)->tv_nsec != -1) \
  93                 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
  94         else \
  95                 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
  96 }
  97
  98 #define fxdr_nfsv3time(f, t) { \
  99         (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
 100         (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
 101 }
 102 #define txdr_nfsv3time(f, t) { \
 103         ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
 104         ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
 105 }
 106
 107 #define fxdr_hyper(f, t) { \
 108         ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \
 109         ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \
 110 }
 111 #define txdr_hyper(f, t) { \
 112         ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \
 113         ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \
 114 }
 115
 116 #endif