1 | /* $NetBSD: xdr_subs.h,v 1.15 2005/12/11 12:25:17 christos Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1989, 1993 |
5 | * The Regents of the University of California. All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to Berkeley by |
8 | * Rick Macklem at The University of Guelph. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * 3. Neither the name of the University nor the names of its contributors |
19 | * may be used to endorse or promote products derived from this software |
20 | * without specific prior written permission. |
21 | * |
22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
32 | * SUCH DAMAGE. |
33 | * |
34 | * @(#)xdr_subs.h 8.3 (Berkeley) 3/30/95 |
35 | */ |
36 | |
37 | |
38 | #ifndef _NFS_XDR_SUBS_H_ |
39 | #define _NFS_XDR_SUBS_H_ |
40 | |
41 | /* |
42 | * Macros used for conversion to/from xdr representation by nfs... |
43 | * These use the MACHINE DEPENDENT routines ntohl, htonl |
44 | * As defined by "XDR: External Data Representation Standard" RFC1014 |
45 | * |
46 | * To simplify the implementation, we use ntohl/htonl even on big-endian |
47 | * machines, and count on them being `#define'd away. Some of these |
48 | * might be slightly more efficient as quad_t copies on a big-endian, |
49 | * but we cannot count on their alignment anyway. |
50 | */ |
51 | |
52 | #define fxdr_unsigned(t, v) ((t)ntohl((int32_t)(v))) |
53 | #define txdr_unsigned(v) (htonl((int32_t)(v))) |
54 | |
55 | /* |
56 | * Directory cookies shouldn't really be XDR-ed, these functions |
57 | * are just here to attempt to keep information within 32 bits. And |
58 | * make things look better. See nfs_cookieheuristic. |
59 | */ |
60 | #define fxdr_cookie3(v) (((off_t)((v)[0]) << 32) | ((off_t) (v)[1])) |
61 | #define fxdr_swapcookie3(v) (((off_t)((v)[1]) << 32) | ((off_t) (v)[0])) |
62 | |
63 | #define txdr_cookie3(f, v) { \ |
64 | (v)[1] = (u_int32_t)((f) & 0xffffffffLL); \ |
65 | (v)[0] = (u_int32_t)((f) >> 32); \ |
66 | } |
67 | #define txdr_swapcookie3(f, v) { \ |
68 | (v)[0] = (u_int32_t)((f) & 0xffffffffLL); \ |
69 | (v)[1] = (u_int32_t)((f) >> 32); \ |
70 | } |
71 | |
72 | #define fxdr_nfsv2time(f, t) { \ |
73 | (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); \ |
74 | if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) \ |
75 | (t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \ |
76 | else \ |
77 | (t)->tv_nsec = 0; \ |
78 | } |
79 | #define txdr_nfsv2time(f, t) { \ |
80 | ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); \ |
81 | if ((f)->tv_nsec != -1) \ |
82 | ((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \ |
83 | else \ |
84 | ((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; \ |
85 | } |
86 | |
87 | #define fxdr_nfsv3time(f, t) { \ |
88 | (t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); \ |
89 | (t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); \ |
90 | } |
91 | #define txdr_nfsv3time(f, t) { \ |
92 | ((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); \ |
93 | ((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); \ |
94 | } |
95 | |
96 | #define fxdr_hyper(f) \ |
97 | ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) | \ |
98 | (u_quad_t)(ntohl(((u_int32_t *)(f))[1]))) |
99 | |
100 | |
101 | #define txdr_hyper(f, t) { \ |
102 | ((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32)); \ |
103 | ((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff)); \ |
104 | } |
105 | |
106 | #endif |
107 | |