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clockctl.c revision 1.13 
      1 /*      $NetBSD: clockctl.c,v 1.13 2005/02/27 00:26:58 perry Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2001 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Emmanuel Dreyfus.
      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. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: clockctl.c,v 1.13 2005/02/27 00:26:58 perry Exp $");
     35 
     36 #include "opt_ntp.h"
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/proc.h>
     41 #include <sys/errno.h>
     42 #include <sys/ioctl.h>
     43 #include <sys/device.h>
     44 #include <sys/time.h>
     45 #include <sys/conf.h>
     46 #ifdef NTP
     47 #include <sys/timex.h>
     48 #endif /* NTP */
     49 
     50 #include <sys/clockctl.h>
     51 
     52 struct clockctl_softc {
     53 	struct device   clockctl_dev;
     54 };
     55 
     56 dev_type_ioctl(clockctlioctl);
     57 
     58 const struct cdevsw clockctl_cdevsw = {
     59 	nullopen, nullclose, noread, nowrite, clockctlioctl,
     60 	nostop, notty, nopoll, nommap, nokqfilter,
     61 };
     62 
     63 /*ARGSUSED*/
     64 void
     65 clockctlattach(int num)
     66 {
     67 	/* Nothing to set up before open is called */
     68 	return;
     69 }
     70 
     71 int
     72 clockctlioctl(dev, cmd, data, flags, p)
     73 	dev_t dev;
     74 	u_long cmd;
     75 	caddr_t data;
     76 	int flags;
     77 	struct proc *p;
     78 {
     79 	int error = 0;
     80 
     81 	switch (cmd) {
     82 		case CLOCKCTL_SETTIMEOFDAY: {
     83 			struct sys_settimeofday_args *args =
     84 			    (struct sys_settimeofday_args *)data;
     85 
     86 			error = settimeofday1(SCARG(args, tv),
     87 			    SCARG(args, tzp), p);
     88 			if (error)
     89 				return (error);
     90 			break;
     91 		}
     92 		case CLOCKCTL_ADJTIME: {
     93 			struct sys_adjtime_args *args =
     94 			    (struct sys_adjtime_args *)data;
     95 
     96 			error = adjtime1(SCARG(args, delta),
     97 			    SCARG(args, olddelta), p);
     98 			if (error)
     99 				return (error);
    100 			break;
    101 		}
    102 		case CLOCKCTL_CLOCK_SETTIME: {
    103 			struct sys_clock_settime_args *args =
    104 			    (struct sys_clock_settime_args *)data;
    105 
    106 			error = clock_settime1(SCARG(args, clock_id),
    107 			    SCARG(args, tp));
    108 			if (error)
    109 				return (error);
    110 			break;
    111 		}
    112 #ifdef NTP
    113 		case CLOCKCTL_NTP_ADJTIME: {
    114 			struct clockctl_ntp_adjtime_args *args =
    115 			    (struct clockctl_ntp_adjtime_args *)data;
    116 			struct timex ntv;
    117 
    118 			error = copyin((caddr_t)SCARG(args,uas.tp),
    119 			    (caddr_t)&ntv, sizeof(ntv));
    120 			if (error)
    121 				return (error);
    122 
    123 			error = ntp_adjtime1(&ntv, args, &args->retval);
    124 			return (error);
    125 		}
    126 #endif /* NTP */
    127 		default:
    128 			error = EINVAL;
    129 	}
    130 
    131 	return (error);
    132 }
    133 
    134 
    135