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      1 /*      $NetBSD: clockctl_50.c,v 1.4 2019/12/12 02:15:42 pgoyette 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_50.c,v 1.4 2019/12/12 02:15:42 pgoyette Exp $");
     35 
     36 #if defined(_KERNEL_OPT)
     37 #include "opt_compat_netbsd.h"
     38 #endif
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/proc.h>
     43 #include <sys/errno.h>
     44 #include <sys/ioctl.h>
     45 #include <sys/device.h>
     46 #include <sys/time.h>
     47 #include <sys/conf.h>
     48 #include <sys/timex.h>
     49 #include <sys/kauth.h>
     50 #include <sys/module.h>
     51 #include <sys/mutex.h>
     52 #include <sys/compat_stub.h>
     53 
     54 #include <sys/clockctl.h>
     55 #include <compat/sys/clockctl.h>
     56 #include <compat/sys/time_types.h>
     57 
     58 int
     59 compat50_clockctlioctl(dev_t dev, u_long cmd, void *data, int flags,
     60     struct lwp *l)
     61 {
     62 	int error = 0;
     63 	const struct cdevsw *cd = cdevsw_lookup(dev);
     64 
     65 	if (cd == NULL || cd->d_ioctl == NULL)
     66 		return ENXIO;
     67 
     68 	switch (cmd) {
     69 	case CLOCKCTL_OSETTIMEOFDAY: {
     70 		struct timeval50 tv50;
     71 		struct timeval tv;
     72 		struct clockctl50_settimeofday *args = data;
     73 
     74 		error = copyin(args->tv, &tv50, sizeof(tv50));
     75 		if (error)
     76 			return (error);
     77 		timeval50_to_timeval(&tv50, &tv);
     78 		error = settimeofday1(&tv, false, args->tzp, l, false);
     79 		break;
     80 	}
     81 	case CLOCKCTL_OADJTIME: {
     82 		struct timeval atv, oldatv;
     83 		struct timeval50 atv50;
     84 		struct clockctl50_adjtime *args = data;
     85 
     86 		if (args->delta) {
     87 			error = copyin(args->delta, &atv50, sizeof(atv50));
     88 			if (error)
     89 				return (error);
     90 			timeval50_to_timeval(&atv50, &atv);
     91 		}
     92 		adjtime1(args->delta ? &atv : NULL,
     93 		    args->olddelta ? &oldatv : NULL, l->l_proc);
     94 		if (args->olddelta) {
     95 			timeval_to_timeval50(&oldatv, &atv50);
     96 			error = copyout(&atv50, args->olddelta, sizeof(atv50));
     97 		}
     98 		break;
     99 	}
    100 	case CLOCKCTL_OCLOCK_SETTIME: {
    101 		struct timespec50 tp50;
    102 		struct timespec tp;
    103 		struct clockctl50_clock_settime *args = data;
    104 
    105 		error = copyin(args->tp, &tp50, sizeof(tp50));
    106 		if (error)
    107 			return (error);
    108 		timespec50_to_timespec(&tp50, &tp);
    109 		error = clock_settime1(l->l_proc, args->clock_id, &tp, true);
    110 		break;
    111 	}
    112 	case CLOCKCTL_ONTP_ADJTIME: {
    113 		if (vec_ntp_timestatus == NULL) {
    114 			error = ENOTTY;
    115 			break;
    116 		}
    117 		/* The ioctl number changed but the data did not change. */
    118 		error = (cd->d_ioctl)(dev, CLOCKCTL_NTP_ADJTIME,
    119 		    data, flags, l);
    120 		break;
    121 	}
    122 	default:
    123 		error = ENOTTY;
    124 	}
    125 
    126 	return (error);
    127 }
    128 
    129 void
    130 clockctl_50_init(void)
    131 {
    132 
    133 	MODULE_HOOK_SET(clockctl_ioctl_50_hook, compat50_clockctlioctl);
    134 }
    135 
    136 void
    137 clockctl_50_fini(void)
    138 {
    139 
    140 	MODULE_HOOK_UNSET(clockctl_ioctl_50_hook);
    141 }
    142