OpenSolaris Launch

1 files changed, 108 insertions, 0 deletions

diff --git a/usr/src/uts/common/syscall/adjtime.c b/usr/src/uts/common/syscall/adjtime.c
new file mode 100644
index 0000000000..dc2dde5306
--- /dev/null
+++ b/usr/src/uts/common/syscall/adjtime.c
@@ -0,0 +1,108 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved	*/
+
+
+/*
+ * Copyright 1999,2001-2003 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* from SVr4.0 1.78 */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/sysmacros.h>
+#include <sys/systm.h>
+#include <sys/tuneable.h>
+#include <sys/errno.h>
+#include <sys/proc.h>
+#include <sys/time.h>
+#include <sys/debug.h>
+#include <sys/model.h>
+#include <sys/policy.h>
+
+int
+adjtime(struct timeval *delta, struct timeval *olddelta)
+{
+	struct timeval atv, oatv;
+	int64_t	ndelta;
+	int64_t old_delta;
+	int s;
+	model_t datamodel = get_udatamodel();
+
+	if (secpolicy_settime(CRED()) != 0)
+		return (set_errno(EPERM));
+
+	if (datamodel == DATAMODEL_NATIVE) {
+		if (copyin(delta, &atv, sizeof (atv)))
+			return (set_errno(EFAULT));
+	} else {
+		struct timeval32 atv32;
+
+		if (copyin(delta, &atv32, sizeof (atv32)))
+			return (set_errno(EFAULT));
+		TIMEVAL32_TO_TIMEVAL(&atv, &atv32);
+	}
+
+	if (atv.tv_usec <= -MICROSEC || atv.tv_usec >= MICROSEC)
+		return (set_errno(EINVAL));
+
+	/*
+	 * The SVID specifies that if delta is 0, then there is
+	 * no effect upon time correction, just return olddelta.
+	 */
+	ndelta = (int64_t)atv.tv_sec * NANOSEC + atv.tv_usec * 1000;
+	mutex_enter(&tod_lock);
+	s = hr_clock_lock();
+	old_delta = timedelta;
+	if (ndelta)
+		timedelta = ndelta;
+	/*
+	 * Always set tod_needsync on all adjtime() calls, since it implies
+	 * someone is watching over us and keeping the local clock in sync.
+	 */
+	tod_needsync = 1;
+	hr_clock_unlock(s);
+	mutex_exit(&tod_lock);
+
+	if (olddelta) {
+		oatv.tv_sec = old_delta / NANOSEC;
+		oatv.tv_usec = (old_delta % NANOSEC) / 1000;
+		if (datamodel == DATAMODEL_NATIVE) {
+			if (copyout(&oatv, olddelta, sizeof (oatv)))
+				return (set_errno(EFAULT));
+		} else {
+			struct timeval32 oatv32;
+
+			if (TIMEVAL_OVERFLOW(&oatv))
+				return (set_errno(EOVERFLOW));
+
+			TIMEVAL_TO_TIMEVAL32(&oatv32, &oatv);
+
+			if (copyout(&oatv32, olddelta, sizeof (oatv32)))
+				return (set_errno(EFAULT));
+		}
+	}
+	return (0);
+}