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diff --git a/contrib/ntp/kernel/sys/ppsclock.h b/contrib/ntp/kernel/sys/ppsclock.h
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+/*
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66.
+ *
+ * Copyright (c) 1992 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Lawrence Berkeley Laboratory.
+ * 4. The name of the University may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef TIOCGPPSEV
+#define PPSCLOCKSTR "ppsclock"
+
+#ifndef HAVE_STRUCT_PPSCLOCKEV
+struct ppsclockev {
+ struct timeval tv;
+ u_int serial;
+};
+#endif
+
+#if defined(__STDC__) || defined(SYS_HPUX)
+#ifdef _IOR
+#define CIOGETEV _IOR('C', 0, struct ppsclockev) /* get last pps event */
+#else /* XXX SOLARIS is different */
+#define CIO ('C'<<8)
+#define CIOGETEV (CIO|0) /* get last pps event */
+#endif /* _IOR */
+#else /* __STDC__ */
+#ifdef _IOR
+#define CIOGETEV _IOR(C, 0, struct ppsclockev) /* get last pps event */
+#else /* XXX SOLARIS is different */
+#define CIO ('C'<<8)
+#define CIOGETEV (CIO|0) /* get last pps event */
+#endif /* _IOR */
+#endif /* __STDC__ */
+#else
+#define CIOGETEV TIOCGPPSEV
+#endif