Annotation of sys/nfs/xdr_subs.h, Revision 1.1.1.1
1.1 nbrk 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
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