/*      $NetBSD: kern_time_30.c,v 1.8 2019/12/15 16:48:26 tsutsui Exp $ */

/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_time_30.c,v 1.8 2019/12/15 16:48:26 tsutsui Exp $");

#ifdef _KERNEL_OPT
#include "opt_compat_netbsd.h"
#include "opt_ntp.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/timex.h>
#include <sys/syscall.h>
#include <sys/syscallvar.h>
#include <sys/syscallargs.h>
#include <sys/compat_stub.h>

#include <compat/common/compat_mod.h>
#include <compat/common/compat_util.h>
#include <compat/sys/time.h>
#include <compat/sys/timex.h>

static const struct syscall_package kern_time_30_syscalls[] = {
       { SYS_compat_30_ntp_gettime, 0,
           (sy_call_t *)compat_30_sys_ntp_gettime },
       { 0, 0, NULL }
};

int
compat_30_sys_ntp_gettime(struct lwp *l,
   const struct compat_30_sys_ntp_gettime_args *uap, register_t *retval)
{
       /* {
               syscallarg(struct ntptimeval30 *) ontvp;
       } */
       struct ntptimeval ntv;
       struct ntptimeval30 ntv30;
       struct timeval tv;
       int error;

       if (vec_ntp_gettime == NULL)
               return ENOSYS;

       if (SCARG(uap, ntvp)) {
               (*vec_ntp_gettime)(&ntv);
               memset(&ntv30, 0, sizeof(ntv30));
               TIMESPEC_TO_TIMEVAL(&tv, &ntv.time);
               timeval_to_timeval50(&tv, &ntv30.time);
               ntv30.maxerror = ntv.maxerror;
               ntv30.esterror = ntv.esterror;

               error = copyout(&ntv30, SCARG(uap, ntvp), sizeof(ntv30));
               if (error)
                       return error;
       }
       *retval = (*vec_ntp_timestatus)();
       return 0;
}

int
kern_time_30_init(void)
{

       return syscall_establish(NULL, kern_time_30_syscalls);
}

int
kern_time_30_fini(void)
{

       return syscall_disestablish(NULL, kern_time_30_syscalls);
}