RTEMS CPU Kit with SuperCore  4.11.3
xdr_subs.h
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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  * 4. Neither the name of the University nor the names of its contributors
17  * may be used to endorse or promote products derived from this software
18  * without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95
33  * $FreeBSD: src/sys/nfs/xdr_subs.h,v 1.15 2005/01/07 01:45:50 imp Exp $
34  */
35 
36 
37 #ifndef _NFS_XDR_SUBS_H_
38 #define _NFS_XDR_SUBS_H_
39 
40 /*
41  * Macros used for conversion to/from xdr representation by nfs...
42  * These use the MACHINE DEPENDENT routines ntohl, htonl
43  * As defined by "XDR: External Data Representation Standard" RFC1014
44  *
45  * To simplify the implementation, we use ntohl/htonl even on big-endian
46  * machines, and count on them being `#define'd away. Some of these
47  * might be slightly more efficient as quad_t copies on a big-endian,
48  * but we cannot count on their alignment anyway.
49  */
50 
51 #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v)))
52 #define txdr_unsigned(v) (htonl((int32_t)(v)))
53 
54 #define fxdr_nfsv2time(f, t) { \
55  (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
56  if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
57  (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
58  else \
59  (t)->tv_nsec = 0; \
60 }
61 #define txdr_nfsv2time(f, t) { \
62  ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
63  if ((f)->tv_nsec != -1) \
64  ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
65  else \
66  ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
67 }
68 
69 #define fxdr_nfsv3time(f, t) { \
70  (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
71  (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
72 }
73 #define txdr_nfsv3time(f, t) { \
74  ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
75  ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
76 }
77 
78 #define fxdr_hyper(f) \
79  ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \
80  (u_quad_t)(ntohl(((u_int32_t *)(f))[1])))
81 #define txdr_hyper(f, t) \
82 do { \
83  ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \
84  ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \
85 } while (0)
86 
87 #endif