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kern_time_30.c revision 1.2 
      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/syscallargs.h>
     53 
     54 int
     55 compat_30_sys_ntp_gettime(struct lwp *l,
     56     const struct compat_30_sys_ntp_gettime_args *uap, register_t *retval)
     57 {
     58 #ifdef NTP
     59 	/* {
     60 		syscallarg(struct ntptimeval30 *) ontvp;
     61 	} */
     62 	struct ntptimeval ntv;
     63 	struct ntptimeval30 ntv30;
     64 	struct timeval tv;
     65 	int error;
     66 
     67 	if (SCARG(uap, ntvp)) {
     68 		ntp_gettime(&ntv);
     69 		TIMESPEC_TO_TIMEVAL(&tv, &ntv.time);
     70 		timeval_to_timeval50(&tv, &ntv30.time);
     71 		ntv30.maxerror = ntv.maxerror;
     72 		ntv30.esterror = ntv.esterror;
     73 
     74 		error = copyout(&ntv30, SCARG(uap, ntvp), sizeof(ntv30));
     75 		if (error)
     76 			return error;
     77  	}
     78 	*retval = ntp_timestatus();
     79 	return 0;
     80 #else
     81 	return ENOSYS;
     82 #endif
     83 }
     84