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
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
94static inline void
95txdr_hyper(uint64_t f, uint32_t* t)
96{
97 t[0] = htonl((u_int32_t)(f >> 32));
98 t[1] = htonl((u_int32_t)(f & 0xffffffff));
99}
100
101#endif /* _NFS_XDR_SUBS_H_ */