1 /* $NetBSD: clockctl.c,v 1.17 2006/06/07 22:33:34 kardel 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 1.17 2006/06/07 22:33:34 kardel 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, l) 73 dev_t dev; 74 u_long cmd; 75 caddr_t data; 76 int flags; 77 struct lwp *l; 78 { 79 int error = 0; 80 81 switch (cmd) { 82 case CLOCKCTL_SETTIMEOFDAY: { 83 struct clockctl_settimeofday *args = 84 (struct clockctl_settimeofday *)data; 85 86 error = settimeofday1(args->tv, args->tzp, l->l_proc); 87 if (error) 88 return (error); 89 break; 90 } 91 case CLOCKCTL_ADJTIME: { 92 struct clockctl_adjtime *args = 93 (struct clockctl_adjtime *)data; 94 95 error = adjtime1(args->delta, args->olddelta, 96 l->l_proc); 97 if (error) 98 return (error); 99 break; 100 } 101 case CLOCKCTL_CLOCK_SETTIME: { 102 struct clockctl_clock_settime *args = 103 (struct clockctl_clock_settime *)data; 104 105 error = clock_settime1(l->l_proc, args->clock_id, 106 args->tp); 107 if (error) 108 return (error); 109 break; 110 } 111 #ifdef NTP 112 case CLOCKCTL_NTP_ADJTIME: { 113 struct clockctl_ntp_adjtime *args = 114 (struct clockctl_ntp_adjtime *)data; 115 struct timex ntv; 116 register_t retval; 117 118 error = copyin(args->tp, &ntv, sizeof(ntv)); 119 if (error) 120 return (error); 121 122 ntp_adjtime1(&ntv); 123 124 error = copyout(&ntv, args->tp, sizeof(ntv)); 125 if (error == 0) 126 (void)copyout(&retval, &args->retval, sizeof(retval)); 127 128 return (error); 129 } 130 #endif /* NTP */ 131 default: 132 error = EINVAL; 133 } 134 135 return (error); 136 } 137 138 139