1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
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 * $FreeBSD$
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) do { 					\
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    } while (0)
61
62#define	txdr_nfsv2time(f, t) do { 					\
63    ((struct nfsv2_time *)(t))->nfsv2_sec = htonl((f)->tv_sec); 	\
64    if ((f)->tv_nsec != -1) 						\
65	((struct nfsv2_time *)(t))->nfsv2_usec = htonl((f)->tv_nsec / 1000); \
66    else 								\
67	((struct nfsv2_time *)(t))->nfsv2_usec = 0xffffffff; 		\
68    } while (0)
69
70#define	fxdr_nfsv3time(f, t) do { 					\
71	(t)->tv_sec = ntohl(((struct nfsv3_time *)(f))->nfsv3_sec); 	\
72	(t)->tv_nsec = ntohl(((struct nfsv3_time *)(f))->nfsv3_nsec); 	\
73    } while (0)
74
75#define	txdr_nfsv3time(f, t) do { 					\
76	((struct nfsv3_time *)(t))->nfsv3_sec = htonl((f)->tv_sec); 	\
77	((struct nfsv3_time *)(t))->nfsv3_nsec = htonl((f)->tv_nsec); 	\
78    } while (0)
79
80#define	fxdr_nfsv4time(f, t) do { 					\
81	(t)->tv_sec = ntohl(((struct nfsv4_time *)(f))->nfsv4_sec); 	\
82	(t)->tv_nsec = (ntohl(((struct nfsv4_time *)(f))->nfsv4_nsec) % \
83		1000000000); 						\
84    } while (0)
85
86#define	txdr_nfsv4time(f, t) do { 					\
87	((struct nfsv4_time *)(t))->nfsv4_highsec = 0; 			\
88	((struct nfsv4_time *)(t))->nfsv4_sec = htonl((f)->tv_sec); 	\
89	((struct nfsv4_time *)(t))->nfsv4_nsec = htonl((f)->tv_nsec); 	\
90    } while (0)
91
92#define	fxdr_hyper(f) 							\
93        ((((u_quad_t)ntohl(((u_int32_t *)(f))[0])) << 32) |		\
94	 (u_quad_t)(ntohl(((u_int32_t *)(f))[1])))
95
96#define	txdr_hyper(f, t) do {						\
97	((u_int32_t *)(t))[0] = htonl((u_int32_t)((f) >> 32));		\
98	((u_int32_t *)(t))[1] = htonl((u_int32_t)((f) & 0xffffffff));	\
99    } while (0)
100
101#endif	/* _NFS_XDR_SUBS_H_ */
102