17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
217c478bd9Sstevel@tonic-gate */
227c478bd9Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
237c478bd9Sstevel@tonic-gate /* All Rights Reserved */
247c478bd9Sstevel@tonic-gate
257c478bd9Sstevel@tonic-gate
267c478bd9Sstevel@tonic-gate /*
277c478bd9Sstevel@tonic-gate * Copyright 1999,2001-2003 Sun Microsystems, Inc. All rights reserved.
287c478bd9Sstevel@tonic-gate * Use is subject to license terms.
297c478bd9Sstevel@tonic-gate */
307c478bd9Sstevel@tonic-gate
317c478bd9Sstevel@tonic-gate #include <sys/param.h>
327c478bd9Sstevel@tonic-gate #include <sys/types.h>
337c478bd9Sstevel@tonic-gate #include <sys/sysmacros.h>
347c478bd9Sstevel@tonic-gate #include <sys/systm.h>
357c478bd9Sstevel@tonic-gate #include <sys/tuneable.h>
367c478bd9Sstevel@tonic-gate #include <sys/errno.h>
377c478bd9Sstevel@tonic-gate #include <sys/proc.h>
387c478bd9Sstevel@tonic-gate #include <sys/time.h>
397c478bd9Sstevel@tonic-gate #include <sys/debug.h>
407c478bd9Sstevel@tonic-gate #include <sys/model.h>
417c478bd9Sstevel@tonic-gate #include <sys/policy.h>
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate int
adjtime(const struct timeval * delta,struct timeval * olddelta)44*b93865c3SPatrick Mooney adjtime(const struct timeval *delta, struct timeval *olddelta)
457c478bd9Sstevel@tonic-gate {
467c478bd9Sstevel@tonic-gate struct timeval atv, oatv;
477c478bd9Sstevel@tonic-gate int64_t ndelta;
487c478bd9Sstevel@tonic-gate int64_t old_delta;
497c478bd9Sstevel@tonic-gate int s;
507c478bd9Sstevel@tonic-gate model_t datamodel = get_udatamodel();
517c478bd9Sstevel@tonic-gate
527c478bd9Sstevel@tonic-gate if (secpolicy_settime(CRED()) != 0)
537c478bd9Sstevel@tonic-gate return (set_errno(EPERM));
547c478bd9Sstevel@tonic-gate
557c478bd9Sstevel@tonic-gate if (datamodel == DATAMODEL_NATIVE) {
567c478bd9Sstevel@tonic-gate if (copyin(delta, &atv, sizeof (atv)))
577c478bd9Sstevel@tonic-gate return (set_errno(EFAULT));
587c478bd9Sstevel@tonic-gate } else {
597c478bd9Sstevel@tonic-gate struct timeval32 atv32;
607c478bd9Sstevel@tonic-gate
617c478bd9Sstevel@tonic-gate if (copyin(delta, &atv32, sizeof (atv32)))
627c478bd9Sstevel@tonic-gate return (set_errno(EFAULT));
637c478bd9Sstevel@tonic-gate TIMEVAL32_TO_TIMEVAL(&atv, &atv32);
647c478bd9Sstevel@tonic-gate }
657c478bd9Sstevel@tonic-gate
667c478bd9Sstevel@tonic-gate if (atv.tv_usec <= -MICROSEC || atv.tv_usec >= MICROSEC)
677c478bd9Sstevel@tonic-gate return (set_errno(EINVAL));
687c478bd9Sstevel@tonic-gate
697c478bd9Sstevel@tonic-gate /*
707c478bd9Sstevel@tonic-gate * The SVID specifies that if delta is 0, then there is
717c478bd9Sstevel@tonic-gate * no effect upon time correction, just return olddelta.
727c478bd9Sstevel@tonic-gate */
737c478bd9Sstevel@tonic-gate ndelta = (int64_t)atv.tv_sec * NANOSEC + atv.tv_usec * 1000;
747c478bd9Sstevel@tonic-gate mutex_enter(&tod_lock);
757c478bd9Sstevel@tonic-gate s = hr_clock_lock();
767c478bd9Sstevel@tonic-gate old_delta = timedelta;
777c478bd9Sstevel@tonic-gate if (ndelta)
787c478bd9Sstevel@tonic-gate timedelta = ndelta;
797c478bd9Sstevel@tonic-gate /*
807c478bd9Sstevel@tonic-gate * Always set tod_needsync on all adjtime() calls, since it implies
817c478bd9Sstevel@tonic-gate * someone is watching over us and keeping the local clock in sync.
827c478bd9Sstevel@tonic-gate */
837c478bd9Sstevel@tonic-gate tod_needsync = 1;
847c478bd9Sstevel@tonic-gate hr_clock_unlock(s);
857c478bd9Sstevel@tonic-gate mutex_exit(&tod_lock);
867c478bd9Sstevel@tonic-gate
877c478bd9Sstevel@tonic-gate if (olddelta) {
887c478bd9Sstevel@tonic-gate oatv.tv_sec = old_delta / NANOSEC;
897c478bd9Sstevel@tonic-gate oatv.tv_usec = (old_delta % NANOSEC) / 1000;
907c478bd9Sstevel@tonic-gate if (datamodel == DATAMODEL_NATIVE) {
917c478bd9Sstevel@tonic-gate if (copyout(&oatv, olddelta, sizeof (oatv)))
927c478bd9Sstevel@tonic-gate return (set_errno(EFAULT));
937c478bd9Sstevel@tonic-gate } else {
947c478bd9Sstevel@tonic-gate struct timeval32 oatv32;
957c478bd9Sstevel@tonic-gate
967c478bd9Sstevel@tonic-gate if (TIMEVAL_OVERFLOW(&oatv))
977c478bd9Sstevel@tonic-gate return (set_errno(EOVERFLOW));
987c478bd9Sstevel@tonic-gate
997c478bd9Sstevel@tonic-gate TIMEVAL_TO_TIMEVAL32(&oatv32, &oatv);
1007c478bd9Sstevel@tonic-gate
1017c478bd9Sstevel@tonic-gate if (copyout(&oatv32, olddelta, sizeof (oatv32)))
1027c478bd9Sstevel@tonic-gate return (set_errno(EFAULT));
1037c478bd9Sstevel@tonic-gate }
1047c478bd9Sstevel@tonic-gate }
1057c478bd9Sstevel@tonic-gate return (0);
1067c478bd9Sstevel@tonic-gate }
107