sys/compat/common/kern_time_30.c

   1 /*      $NetBSD: kern_time_30.c,v 1.2 2009/01/11 02:45:47 christos Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Christos Zoulas.
   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. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *        This product includes software developed by the NetBSD
  21  *        Foundation, Inc. and its contributors.
  22  * 4. Neither the name of The NetBSD Foundation nor the names of its
  23  *    contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36  * POSSIBILITY OF SUCH DAMAGE.
  37  */
  38 #include <sys/cdefs.h>
  39 __KERNEL_RCSID(0, "$NetBSD: kern_time_30.c,v 1.2 2009/01/11 02:45:47 christos Exp $");
  40
  41 #include "opt_ntp.h"
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/time.h>
  46 #include <sys/timex.h>
  47
  48 #include <compat/common/compat_util.h>
  49 #include <compat/sys/time.h>
  50 #include <compat/sys/timex.h>
  51
  52 #include <sys/sched.h>
  53 #include <sys/syscallargs.h>
  54
  55 int
  56 compat_30_sys_ntp_gettime(struct lwp *l,
  57     const struct compat_30_sys_ntp_gettime_args *uap, register_t *retval)
  58 {
  59 #ifdef NTP
  60         /* {
  61                 syscallarg(struct ntptimeval30 *) ontvp;
  62         } */
  63         struct ntptimeval ntv;
  64         struct ntptimeval30 ntv30;
  65         struct timeval tv;
  66         int error;
  67
  68         if (SCARG(uap, ntvp)) {
  69                 ntp_gettime(&ntv);
  70                 TIMESPEC_TO_TIMEVAL(&tv, &ntv.time);
  71                 timeval_to_timeval50(&tv, &ntv30.time);
  72                 ntv30.maxerror = ntv.maxerror;
  73                 ntv30.esterror = ntv.esterror;
  74
  75                 error = copyout(&ntv30, SCARG(uap, ntvp), sizeof(ntv30));
  76                 if (error)
  77                         return error;
  78         }
  79         *retval = ntp_timestatus();
  80         return 0;
  81 #else
  82         return ENOSYS;
  83 #endif
  84 }