The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/clockctl.c

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    1 /*      $NetBSD: clockctl.c,v 1.12 2003/06/29 22:29:58 fvdl 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 1.12 2003/06/29 22:29:58 fvdl 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 

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