1 /* $NetBSD: clockctl.c,v 1.24 2009/01/11 02:45:50 christos 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 1.24 2009/01/11 02:45:50 christos Exp $"); 35 36 #include "opt_ntp.h" 37 #include "opt_compat_netbsd.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/proc.h> 42 #include <sys/errno.h> 43 #include <sys/ioctl.h> 44 #include <sys/device.h> 45 #include <sys/time.h> 46 #include <sys/conf.h> 47 #ifdef NTP 48 #include <sys/timex.h> 49 #endif /* NTP */ 50 51 #include <sys/clockctl.h> 52 #ifdef COMPAT_50 53 #include <compat/sys/clockctl.h> 54 #endif 55 56 struct clockctl_softc { 57 struct device clockctl_dev; 58 }; 59 60 dev_type_ioctl(clockctlioctl); 61 62 const struct cdevsw clockctl_cdevsw = { 63 nullopen, nullclose, noread, nowrite, clockctlioctl, 64 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER, 65 }; 66 67 /*ARGSUSED*/ 68 void 69 clockctlattach(int num) 70 { 71 /* Nothing to set up before open is called */ 72 return; 73 } 74 75 int 76 clockctlioctl( 77 dev_t dev, 78 u_long cmd, 79 void *data, 80 int flags, 81 struct lwp *l) 82 { 83 int error = 0; 84 85 switch (cmd) { 86 case CLOCKCTL_SETTIMEOFDAY: { 87 struct clockctl_settimeofday *args = data; 88 89 error = settimeofday1(args->tv, true, args->tzp, l, false); 90 break; 91 } 92 case CLOCKCTL_ADJTIME: { 93 struct timeval atv, oldatv; 94 struct clockctl_adjtime *args = data; 95 96 if (args->delta) { 97 error = copyin(args->delta, &atv, sizeof(*args->delta)); 98 if (error) 99 return (error); 100 } 101 adjtime1(args->delta ? &atv : NULL, 102 args->olddelta ? &oldatv : NULL, l->l_proc); 103 if (args->olddelta) 104 error = copyout(&oldatv, args->olddelta, 105 sizeof(args->olddelta)); 106 break; 107 } 108 case CLOCKCTL_CLOCK_SETTIME: { 109 struct clockctl_clock_settime *args = data; 110 111 error = clock_settime1(l->l_proc, args->clock_id, 112 args->tp, false); 113 break; 114 } 115 #ifdef NTP 116 case CLOCKCTL_NTP_ADJTIME: { 117 struct clockctl_ntp_adjtime *args = data; 118 struct timex ntv; 119 register_t retval; 120 121 error = copyin(args->tp, &ntv, sizeof(ntv)); 122 if (error) 123 return (error); 124 125 ntp_adjtime1(&ntv); 126 127 error = copyout(&ntv, args->tp, sizeof(ntv)); 128 if (error == 0) 129 error = copyout(&retval, &args->retval, sizeof(retval)); 130 } 131 #endif /* NTP */ 132 default: 133 #ifdef COMPAT_50 134 error = compat50_clockctlioctl(dev, cmd, data, flags, l); 135 #else 136 error = EINVAL; 137 #endif 138 } 139 140 return (error); 141 } 142 143 144