bsd/nfs/xdr_subs.h

   1 /*
   2  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  24 /*
  25  * Copyright (c) 1989, 1993
  26  *     The Regents of the University of California.  All rights reserved.
  27  *
  28  * This code is derived from software contributed to Berkeley by
  29  * Rick Macklem at The University of Guelph.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *     This product includes software developed by the University of
  42  *     California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  *
  59  *     @(#)xdr_subs.h  8.3 (Berkeley) 3/30/95
  60  * FreeBSD-Id: xdr_subs.h,v 1.9 1997/02/22 09:42:53 peter Exp $
  61  */
  62
  63
  64
  65 #ifndef _NFS_XDR_SUBS_H_
  66 #define _NFS_XDR_SUBS_H_
  67
  68 #include <sys/appleapiopts.h>
  69
  70 #ifdef __APPLE_API_PRIVATE
  71 /*
  72  * Macros used for conversion to/from xdr representation by nfs...
  73  * These use the MACHINE DEPENDENT routines ntohl, htonl
  74  * As defined by "XDR: External Data Representation Standard" RFC1014
  75  *
  76  * To simplify the implementation, we use ntohl/htonl even on big-endian
  77  * machines, and count on them being `#define'd away.  Some of these
  78  * might be slightly more efficient as quad_t copies on a big-endian,
  79  * but we cannot count on their alignment anyway.
  80  */
  81
  82 #define fxdr_unsigned(t, v)     ((t)ntohl((long)(v)))
  83 #define txdr_unsigned(v)        (htonl((long)(v)))
  84
  85 #define fxdr_nfsv2time(f, t) { \
  86         (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
  87         if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
  88                 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
  89         else \
  90                 (t)->tv_nsec = 0; \
  91 }
  92 #define txdr_nfsv2time(f, t) { \
  93         ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
  94         if ((f)->tv_nsec != -1) \
  95                 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
  96         else \
  97                 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
  98 }
  99
 100 #define fxdr_nfsv3time(f, t) { \
 101         (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
 102         (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
 103 }
 104 #define txdr_nfsv3time(f, t) { \
 105         ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
 106         ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
 107 }
 108
 109 #define fxdr_hyper(f, t) { \
 110         ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \
 111         ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \
 112 }
 113 #define txdr_hyper(f, t) { \
 114         ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \
 115         ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \
 116 }
 117
 118 #endif /* __APPLE_API_PRIVATE */
 119 #endif /* _NFS_XDR_SUBS_H_ */