usr.sbin/timed/timed/byteorder.c

   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  * @(#)byteorder.c      8.1 (Berkeley) 6/6/93
  34  * $FreeBSD: src/usr.sbin/timed/timed/byteorder.c,v 1.4 1999/08/28 01:20:16 peter Exp $
  35  * $DragonFly: src/usr.sbin/timed/timed/byteorder.c,v 1.3 2004/03/13 21:08:38 eirikn Exp $
  36  */
  37
  38 #include "globals.h"
  39
  40 /*
  41  * Two routines to do the necessary byte swapping for timed protocol
  42  * messages. Protocol is defined in /usr/include/protocols/timed.h
  43  */
  44 void
  45 bytenetorder(struct tsp *ptr)
  46 {
  47
  48         ptr->tsp_seq = htons((u_short)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((u_long)ptr->tsp_time.tv_sec);
  56                 ptr->tsp_time.tv_usec = htonl((u_long)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
  68         ptr->tsp_seq = ntohs((u_short)ptr->tsp_seq);
  69         switch (ptr->tsp_type) {
  70
  71         case TSP_SETTIME:
  72         case TSP_ADJTIME:
  73         case TSP_SETDATE:
  74         case TSP_SETDATEREQ:
  75                 ptr->tsp_time.tv_sec = ntohl((u_long)ptr->tsp_time.tv_sec);
  76                 ptr->tsp_time.tv_usec = ntohl((u_long)ptr->tsp_time.tv_usec);
  77                 break;
  78
  79         default:
  80                 break;          /* nothing more needed */
  81         }
  82 }