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 * $FreeBSD$
33 */
34
35#ifndef _NFS_XDR_SUBS_H_
36#define	_NFS_XDR_SUBS_H_
37
38/*
39 * Macros used for conversion to/from xdr representation by nfs...
40 * These use the MACHINE DEPENDENT routines ntohl, htonl
41 * As defined by "XDR: External Data Representation Standard" RFC1014
42 *
43 * To simplify the implementation, we use ntohl/htonl even on big-endian
44 * machines, and count on them being `#define'd away.  Some of these
45 * might be slightly more efficient as quad_t copies on a big-endian,
46 * but we cannot count on their alignment anyway.
47 */
48
49#define	fxdr_unsigned(t, v)	((t)ntohl((int32_t)(v)))
50#define	txdr_unsigned(v)	(htonl((int32_t)(v)))
51
52#define	fxdr_nfsv2time(f, t) do { 					\
53    (t)->tv_sec = ntohl(((struct nfsv2_time *)(f))->nfsv2_sec); 	\
54    if (((struct nfsv2_time *)(f))->nfsv2_usec != 0xffffffff) 		\
55	(t)->tv_nsec = 1000 * ntohl(((struct nfsv2_time *)(f))->nfsv2_usec); \
56    else 								\
57	(t)->tv_nsec = 0; 						\
58    } while (0)
59
60#define	txdr_nfsv2time(f, t) do { 					\
61    ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); 	\
62    if ((f)->tv_nsec != -1) 						\
63	((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
64    else 								\
65	((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; 		\
66    } while (0)
67
68#define	fxdr_nfsv3time(f, t) do { 					\
69	(t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); 	\
70	(t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); 	\
71    } while (0)
72
73#define	txdr_nfsv3time(f, t) do { 					\
74	((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); 	\
75	((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); 	\
76    } while (0)
77
78#define	fxdr_nfsv4time(f, t) do { 					\
79	(t)->tv_sec = ntohl(((struct nfsv4_time *)(f))->nfsv4_sec); 	\
80	(t)->tv_nsec = (ntohl(((struct nfsv4_time *)(f))->nfsv4_nsec) % \
81		1000000000); 						\
82    } while (0)
83
84#define	txdr_nfsv4time(f, t) do { 					\
85	((struct nfsv4_time *)(t))->nfsv4_highsec = 0; 			\
86	((struct nfsv4_time *)(t))->nfsv4_sec = htonl((f)->tv_sec); 	\
87	((struct nfsv4_time *)(t))->nfsv4_nsec = htonl((f)->tv_nsec); 	\
88    } while (0)
89
90#define	fxdr_hyper(f) 							\
91        ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) |		\
92	 (u_quad_t)(ntohl(((u_int32_t *)(f))[1])))
93
94#define	txdr_hyper(f, t) do {						\
95	((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32));		\
96	((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff));	\
97    } while (0)
98
99#endif	/* _NFS_XDR_SUBS_H_ */
100