1 /* $OpenBSD: xdr_subs.h,v 1.8 2003/06/02 23:28:20 millert Exp $ */
2 /* $NetBSD: xdr_subs.h,v 1.11 1996/02/18 11:54:12 fvdl Exp $ */
3
4 /*
5 * Copyright (c) 1989, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Rick Macklem at The University of Guelph.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95
36 */
37
38
39 #ifndef _NFS_XDR_SUBS_H_
40 #define _NFS_XDR_SUBS_H_
41
42 /*
43 * Macros used for conversion to/from xdr representation by nfs...
44 * These use the MACHINE DEPENDENT routines ntohl, htonl
45 * As defined by "XDR: External Data Representation Standard" RFC1014
46 *
47 * To simplify the implementation, we use ntohl/htonl even on big-endian
48 * machines, and count on them being `#define'd away. Some of these
49 * might be slightly more efficient as quad_t copies on a big-endian,
50 * but we cannot count on their alignment anyway.
51 */
52
53 #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v)))
54 #define txdr_unsigned(v) (htonl((int32_t)(v)))
55
56 #define fxdr_nfsv2time(f, t) { \
57 (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \
58 if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \
59 (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
60 else \
61 (t)->tv_nsec = 0; \
62 }
63 #define txdr_nfsv2time(f, t) { \
64 ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \
65 if ((f)->tv_nsec != -1) \
66 ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
67 else \
68 ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \
69 }
70
71 #define fxdr_nfsv3time(f, t) { \
72 (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \
73 (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \
74 }
75 #define txdr_nfsv3time(f, t) { \
76 ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \
77 ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \
78 }
79
80 #define fxdr_hyper(f) \
81 ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \
82 (u_quad_t)(ntohl(((u_int32_t *)(f))[1])))
83
84
85 #define txdr_hyper(f, t) { \
86 ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \
87 ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \
88 }
89
90 #endif