NetBSD/sys/dev/clockctl.c

139 lines
3.6 KiB
C

/* $NetBSD: clockctl.c,v 1.21 2007/03/04 06:01:41 christos Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Emmanuel Dreyfus.
*
* 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.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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: clockctl.c,v 1.21 2007/03/04 06:01:41 christos Exp $");
#include "opt_ntp.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/device.h>
#include <sys/time.h>
#include <sys/conf.h>
#ifdef NTP
#include <sys/timex.h>
#endif /* NTP */
#include <sys/clockctl.h>
struct clockctl_softc {
struct device clockctl_dev;
};
dev_type_ioctl(clockctlioctl);
const struct cdevsw clockctl_cdevsw = {
nullopen, nullclose, noread, nowrite, clockctlioctl,
nostop, notty, nopoll, nommap, nokqfilter, D_OTHER,
};
/*ARGSUSED*/
void
clockctlattach(int num)
{
/* Nothing to set up before open is called */
return;
}
int
clockctlioctl(
dev_t dev,
u_long cmd,
void *data,
int flags,
struct lwp *l)
{
int error = 0;
switch (cmd) {
case CLOCKCTL_SETTIMEOFDAY: {
struct clockctl_settimeofday *args =
(struct clockctl_settimeofday *)data;
error = settimeofday1(args->tv, args->tzp, l->l_proc);
if (error)
return (error);
break;
}
case CLOCKCTL_ADJTIME: {
struct clockctl_adjtime *args =
(struct clockctl_adjtime *)data;
error = adjtime1(args->delta, args->olddelta,
l->l_proc);
if (error)
return (error);
break;
}
case CLOCKCTL_CLOCK_SETTIME: {
struct clockctl_clock_settime *args =
(struct clockctl_clock_settime *)data;
error = clock_settime1(l->l_proc, args->clock_id,
args->tp);
if (error)
return (error);
break;
}
#ifdef NTP
case CLOCKCTL_NTP_ADJTIME: {
struct clockctl_ntp_adjtime *args =
(struct clockctl_ntp_adjtime *)data;
struct timex ntv;
register_t retval;
error = copyin(args->tp, &ntv, sizeof(ntv));
if (error)
return (error);
ntp_adjtime1(&ntv);
error = copyout(&ntv, args->tp, sizeof(ntv));
if (error == 0)
(void)copyout(&retval, &args->retval, sizeof(retval));
return (error);
}
#endif /* NTP */
default:
error = EINVAL;
}
return (error);
}