5a8892e22d
time-related system calls through ioctls. For instance, if user daemon is able to write to /dev/clockctl, then it is able to use the CLOCKCTL_SETTIMEOFDAY ioctl on it, which will be equivalent to a settimeofday. Approved by Christos
135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* $NetBSD: clockctl.c,v 1.1 2001/09/16 06:53:56 manu Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Emmanuel Dreyfus.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/errno.h>
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#include <sys/ioctl.h>
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#include <sys/device.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#ifdef NTP
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#include <sys/timex.h>
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#endif /* NTP */
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#include <sys/clockctl.h>
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struct clockctl_softc {
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struct device clockctl_dev;
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};
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void
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clockctlattach(parent, self, aux)
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struct device *self;
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struct device *parent;
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void *aux;
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{
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/* Nothing to set up before open is called */
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return;
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}
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int
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clockctlopen(dev, flags, fmt, p)
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dev_t dev;
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int flags, fmt;
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struct proc *p;
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{
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return 0;
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}
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int
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clockctlclose(dev, flags, fmt, p)
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dev_t dev;
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int flags, fmt;
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struct proc *p;
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{
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return 0;
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}
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int
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clockctlioctl(dev, cmd, data, flags, p)
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dev_t dev;
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u_long cmd;
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caddr_t data;
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int flags;
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struct proc *p;
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{
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int error = 0;
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switch (cmd) {
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case CLOCKCTL_SETTIMEOFDAY: {
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struct clockctl_settimeofday_args *args =
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(struct clockctl_settimeofday_args *)&data;
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error = settimeofday1(&args->tv, &args->tzp, p);
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if (error)
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return (error);
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break;
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}
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case CLOCKCTL_ADJTIME: {
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struct clockctl_adjtime_args *args =
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(struct clockctl_adjtime_args *)&data;
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error = adjtime1(&args->delta, &args->olddelta, p);
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if (error)
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return (error);
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break;
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}
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case CLOCKCTL_CLOCK_SETTIME: {
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struct clockctl_clock_settime_args *args =
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(struct clockctl_clock_settime_args *)&data;
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error = clock_settime1(args->clock_id, &args->tp);
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if (error)
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return (error);
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break;
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}
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#ifdef NTP
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case CLOCKCTL_NTP_ADJTIME: {
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struct clockctl_ntp_adjtime_args *args =
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(struct clockctl_ntp_adjtime_args *)&data;
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(void*)ntp_adjtime1(&args->tp, &error);
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return (error);
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}
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#endif /* NTP */
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default:
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error = EINVAL;
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}
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return (error);
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}
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