byteorder.c revision 1553 
1/*-
2 * Copyright (c) 1985, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)byteorder.c	8.1 (Berkeley) 6/6/93";
36#endif /* not lint */
37
38#ifdef sgi
39#ident "$Revision: 1.3 $"
40#endif
41
42#include "globals.h"
43
44/*
45 * Two routines to do the necessary byte swapping for timed protocol
46 * messages. Protocol is defined in /usr/include/protocols/timed.h
47 */
48void
49bytenetorder(ptr)
50	struct tsp *ptr;
51{
52	ptr->tsp_seq = htons((u_short)ptr->tsp_seq);
53	switch (ptr->tsp_type) {
54
55	case TSP_SETTIME:
56	case TSP_ADJTIME:
57	case TSP_SETDATE:
58	case TSP_SETDATEREQ:
59		ptr->tsp_time.tv_sec = htonl((u_long)ptr->tsp_time.tv_sec);
60		ptr->tsp_time.tv_usec = htonl((u_long)ptr->tsp_time.tv_usec);
61		break;
62
63	default:
64		break;		/* nothing more needed */
65	}
66}
67
68void
69bytehostorder(ptr)
70	struct tsp *ptr;
71{
72	ptr->tsp_seq = ntohs((u_short)ptr->tsp_seq);
73	switch (ptr->tsp_type) {
74
75	case TSP_SETTIME:
76	case TSP_ADJTIME:
77	case TSP_SETDATE:
78	case TSP_SETDATEREQ:
79		ptr->tsp_time.tv_sec = ntohl((u_long)ptr->tsp_time.tv_sec);
80		ptr->tsp_time.tv_usec = ntohl((u_long)ptr->tsp_time.tv_usec);
81		break;
82
83	default:
84		break;		/* nothing more needed */
85	}
86}
87