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+/* $OpenBSD: _lock.h,v 1.4 2019/04/23 13:35:12 visa Exp $ */
+
+/*-
+ * Copyright (c) 1997 Berkeley Software Design, Inc. 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. Berkeley Software Design Inc's name may not be used to endorse or
+ * promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``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 BERKELEY SOFTWARE DESIGN INC 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.
+ *
+ * $FreeBSD: head/sys/sys/_lock.h 179025 2008-05-15 20:10:06Z attilio $
+ */
+
+#ifndef _SYS__LOCK_H_
+#define _SYS__LOCK_H_
+
+#define LO_CLASSFLAGS 0x0000ffff /* Class specific flags. */
+#define LO_INITIALIZED 0x00010000 /* Lock has been initialized. */
+#define LO_WITNESS 0x00020000 /* Should witness monitor this lock. */
+#define LO_QUIET 0x00040000 /* Don't log locking operations. */
+#define LO_RECURSABLE 0x00080000 /* Lock may recurse. */
+#define LO_SLEEPABLE 0x00100000 /* Lock may be held while sleeping. */
+#define LO_UPGRADABLE 0x00200000 /* Lock may be upgraded/downgraded. */
+#define LO_DUPOK 0x00400000 /* Don't check for duplicate acquires */
+#define LO_IS_VNODE 0x00800000 /* Tell WITNESS about a VNODE lock */
+#define LO_CLASSMASK 0x0f000000 /* Class index bitmask. */
+#define LO_NOPROFILE 0x10000000 /* Don't profile this lock */
+#define LO_NEW 0x20000000 /* Don't check for double-init */
+
+#define LO_CLASSSHIFT 24
+
+enum lock_class_index {
+ LO_CLASS_KERNEL_LOCK,
+ LO_CLASS_SCHED_LOCK,
+ LO_CLASS_MUTEX,
+ LO_CLASS_RWLOCK,
+ LO_CLASS_RRWLOCK
+};
+
+struct lock_object {
+ const struct lock_type *lo_type;
+ const char *lo_name; /* Individual lock name. */
+ struct witness *lo_witness; /* Data for witness. */
+ unsigned int lo_flags;
+};
+
+struct lock_type {
+ const char *lt_name;
+};
+
+#endif /* !_SYS__LOCK_H_ */