source: rtems/cpukit/libnetworking/nfs/xdr_subs.h @ a238cc9

4.104.114.84.95
Last change on this file since a238cc9 was 39e6e65a, checked in by Joel Sherrill <joel.sherrill@…>, on Aug 19, 1998 at 9:32:28 PM

Base files

  • Property mode set to 100644
File size: 3.7 KB
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1/*
2 * Copyright (c) 1989, 1993
3 *      The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Rick Macklem at The University of Guelph.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *      This product includes software developed by the University of
19 *      California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *      @(#)xdr_subs.h  8.1 (Berkeley) 6/10/93
37 * $Id$
38 */
39
40#ifndef _NFS_XDR_SUBS_H_
41#define _NFS_XDR_SUBS_H_
42
43/*
44 * Macros used for conversion to/from xdr representation by nfs...
45 * These use the MACHINE DEPENDENT routines ntohl, htonl
46 * As defined by "XDR: External Data Representation Standard" RFC1014
47 *
48 * To simplify the implementation, we use ntohl/htonl even on big-endian
49 * machines, and count on them being `#define'd away.  Some of these
50 * might be slightly more efficient as quad_t copies on a big-endian,
51 * but we cannot count on their alignment anyway.
52 */
53
54#define fxdr_unsigned(t, v)     ((t)ntohl((long)(v)))
55#define txdr_unsigned(v)        (htonl((long)(v)))
56
57#define fxdr_nfsv2time(f, t) { \
58        (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
59        if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
60                (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
61        else \
62                (t)->tv_nsec = 0; \
63}
64#define txdr_nfsv2time(f, t) { \
65        ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
66        if ((f)->tv_nsec != -1) \
67                ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
68        else \
69                ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
70}
71
72#define fxdr_nfsv3time(f, t) { \
73        (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
74        (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
75}
76#define txdr_nfsv3time(f, t) { \
77        ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
78        ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
79}
80
81#define fxdr_hyper(f, t) { \
82        ((long *)(t))[_QUAD_HIGHWORD] = ntohl(((long *)(f))[0]); \
83        ((long *)(t))[_QUAD_LOWWORD] = ntohl(((long *)(f))[1]); \
84}
85#define txdr_hyper(f, t) { \
86        ((long *)(t))[0] = htonl(((long *)(f))[_QUAD_HIGHWORD]); \
87        ((long *)(t))[1] = htonl(((long *)(f))[_QUAD_LOWWORD]); \
88}
89
90#endif
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