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      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. Neither the name of the University nor the names of its contributors
     14  *    may be used to endorse or promote products derived from this software
     15  *    without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  * SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/cdefs.h>
     31 #ifndef lint
     32 #if 0
     33 static char sccsid[] = "@(#)byteorder.c	8.1 (Berkeley) 6/6/93";
     34 #else
     35 __RCSID("$NetBSD: byteorder.c,v 1.9 2007/01/25 23:25:20 cbiere Exp $");
     36 #endif
     37 #endif /* not lint */
     38 
     39 #include "globals.h"
     40 
     41 /*
     42  * Two routines to do the necessary byte swapping for timed protocol
     43  * messages. Protocol is defined in /usr/include/protocols/timed.h
     44  */
     45 void
     46 bytenetorder(struct tsp *ptr)
     47 {
     48 	ptr->tsp_seq = htons((uint16_t)ptr->tsp_seq);
     49 	switch (ptr->tsp_type) {
     50 
     51 	case TSP_SETTIME:
     52 	case TSP_ADJTIME:
     53 	case TSP_SETDATE:
     54 	case TSP_SETDATEREQ:
     55 		ptr->tsp_time.tv_sec = htonl((uint32_t)ptr->tsp_time.tv_sec);
     56 		ptr->tsp_time.tv_usec = htonl((uint32_t)ptr->tsp_time.tv_usec);
     57 		break;
     58 
     59 	default:
     60 		break;		/* nothing more needed */
     61 	}
     62 }
     63 
     64 void
     65 bytehostorder(struct tsp *ptr)
     66 {
     67 	ptr->tsp_seq = ntohs((uint16_t)ptr->tsp_seq);
     68 	switch (ptr->tsp_type) {
     69 
     70 	case TSP_SETTIME:
     71 	case TSP_ADJTIME:
     72 	case TSP_SETDATE:
     73 	case TSP_SETDATEREQ:
     74 		ptr->tsp_time.tv_sec = ntohl((uint32_t)ptr->tsp_time.tv_sec);
     75 		ptr->tsp_time.tv_usec = ntohl((uint32_t)ptr->tsp_time.tv_usec);
     76 		break;
     77 
     78 	default:
     79 		break;		/* nothing more needed */
     80 	}
     81 }
     82