--- xnu/xnu-12377.121.6/bsd/sys/kernel.h
+++ xnu/xnu-517/bsd/sys/kernel.h
@@ -1,20 +1,17 @@
 /*
- * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. The rights granted to you under the License
- * may not be used to create, or enable the creation or redistribution of,
- * unlawful or unlicensed copies of an Apple operating system, or to
- * circumvent, violate, or enable the circumvention or violation of, any
- * terms of an Apple operating system software license agreement.
- *
- * Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
@@ -22,8 +19,8 @@
  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  * Please see the License for the specific language governing rights and
  * limitations under the License.
- *
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * 
+ * @APPLE_LICENSE_HEADER_END@
  */
 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
 /*-
@@ -65,42 +62,40 @@
  *
  *	@(#)kernel.h	8.3 (Berkeley) 1/21/94
  */
-#ifndef _SYS_KERNEL_H_
+#ifndef	_SYS_KERNEL_H_
 #define _SYS_KERNEL_H_
 
 #include <sys/appleapiopts.h>
 
-#ifdef  KERNEL
+#ifdef	KERNEL
 
 #include <sys/param.h>
 
-#ifdef BSD_KERNEL_PRIVATE
-#include <stdbool.h>
-#include <kern/locks.h>
-
+#ifdef __APPLE_API_PRIVATE
 /* Global variables for the kernel. */
 
 /* 1.1 */
 extern long hostid;
 extern char hostname[MAXHOSTNAMELEN];
-extern lck_mtx_t hostname_lock;
+extern int hostnamelen;
 extern char domainname[MAXHOSTNAMELEN];
-extern lck_mtx_t domainname_lock;
+extern int domainnamelen;
 
 /* 1.2 */
-extern int stathz;              /* statistics clock's frequency */
-extern int profhz;              /* profiling clock's frequency */
-#endif /* BSD_KERNEL_PRIVATE */
+extern struct timeval boottime;
+#ifdef __APPLE_API_OBSOLETE
+extern volatile struct timeval time;
+extern struct timezone tz;			/* XXX */
+extern int lbolt;		/* once a second sleep address */
+extern int tick;		/* usec per tick (1000000 / hz) */
+extern int hz;			/* system clock's frequency */
 
+extern int stathz;		/* statistics clock's frequency */
+extern int profhz;		/* profiling clock's frequency */
+#endif /* __APPLE_API_OBSOLETE */
 
-#ifdef KERNEL_PRIVATE
-extern struct timezone tz;                      /* XXX */
+#endif /* __APPLE_API_PRIVATE */
 
-extern int tick;                /* usec per tick (1000000 / hz) */
-extern int hz;                  /* system clock's frequency */
+#endif	/* KERNEL */
 
-#endif /* KERNEL_PRIVATE */
-
-#endif  /* KERNEL */
-
-#endif  /* !_SYS_KERNEL_H_ */
+#endif	/* !_SYS_KERNEL_H_ */