xref: /xnu-12377.61.12/bsd/sys/kernel.h (revision 4d495c6e23c53686cf65f45067f79024cf5dcee8)
1*4d495c6eSApple OSS Distributions /*
2*4d495c6eSApple OSS Distributions  * Copyright (c) 2000-2019 Apple Inc. All rights reserved.
3*4d495c6eSApple OSS Distributions  *
4*4d495c6eSApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5*4d495c6eSApple OSS Distributions  *
6*4d495c6eSApple OSS Distributions  * This file contains Original Code and/or Modifications of Original Code
7*4d495c6eSApple OSS Distributions  * as defined in and that are subject to the Apple Public Source License
8*4d495c6eSApple OSS Distributions  * Version 2.0 (the 'License'). You may not use this file except in
9*4d495c6eSApple OSS Distributions  * compliance with the License. The rights granted to you under the License
10*4d495c6eSApple OSS Distributions  * may not be used to create, or enable the creation or redistribution of,
11*4d495c6eSApple OSS Distributions  * unlawful or unlicensed copies of an Apple operating system, or to
12*4d495c6eSApple OSS Distributions  * circumvent, violate, or enable the circumvention or violation of, any
13*4d495c6eSApple OSS Distributions  * terms of an Apple operating system software license agreement.
14*4d495c6eSApple OSS Distributions  *
15*4d495c6eSApple OSS Distributions  * Please obtain a copy of the License at
16*4d495c6eSApple OSS Distributions  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17*4d495c6eSApple OSS Distributions  *
18*4d495c6eSApple OSS Distributions  * The Original Code and all software distributed under the License are
19*4d495c6eSApple OSS Distributions  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20*4d495c6eSApple OSS Distributions  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21*4d495c6eSApple OSS Distributions  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22*4d495c6eSApple OSS Distributions  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23*4d495c6eSApple OSS Distributions  * Please see the License for the specific language governing rights and
24*4d495c6eSApple OSS Distributions  * limitations under the License.
25*4d495c6eSApple OSS Distributions  *
26*4d495c6eSApple OSS Distributions  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27*4d495c6eSApple OSS Distributions  */
28*4d495c6eSApple OSS Distributions /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29*4d495c6eSApple OSS Distributions /*-
30*4d495c6eSApple OSS Distributions  * Copyright (c) 1990, 1993
31*4d495c6eSApple OSS Distributions  *	The Regents of the University of California.  All rights reserved.
32*4d495c6eSApple OSS Distributions  * (c) UNIX System Laboratories, Inc.
33*4d495c6eSApple OSS Distributions  * All or some portions of this file are derived from material licensed
34*4d495c6eSApple OSS Distributions  * to the University of California by American Telephone and Telegraph
35*4d495c6eSApple OSS Distributions  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
36*4d495c6eSApple OSS Distributions  * the permission of UNIX System Laboratories, Inc.
37*4d495c6eSApple OSS Distributions  *
38*4d495c6eSApple OSS Distributions  * Redistribution and use in source and binary forms, with or without
39*4d495c6eSApple OSS Distributions  * modification, are permitted provided that the following conditions
40*4d495c6eSApple OSS Distributions  * are met:
41*4d495c6eSApple OSS Distributions  * 1. Redistributions of source code must retain the above copyright
42*4d495c6eSApple OSS Distributions  *    notice, this list of conditions and the following disclaimer.
43*4d495c6eSApple OSS Distributions  * 2. Redistributions in binary form must reproduce the above copyright
44*4d495c6eSApple OSS Distributions  *    notice, this list of conditions and the following disclaimer in the
45*4d495c6eSApple OSS Distributions  *    documentation and/or other materials provided with the distribution.
46*4d495c6eSApple OSS Distributions  * 3. All advertising materials mentioning features or use of this software
47*4d495c6eSApple OSS Distributions  *    must display the following acknowledgement:
48*4d495c6eSApple OSS Distributions  *	This product includes software developed by the University of
49*4d495c6eSApple OSS Distributions  *	California, Berkeley and its contributors.
50*4d495c6eSApple OSS Distributions  * 4. Neither the name of the University nor the names of its contributors
51*4d495c6eSApple OSS Distributions  *    may be used to endorse or promote products derived from this software
52*4d495c6eSApple OSS Distributions  *    without specific prior written permission.
53*4d495c6eSApple OSS Distributions  *
54*4d495c6eSApple OSS Distributions  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
55*4d495c6eSApple OSS Distributions  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
56*4d495c6eSApple OSS Distributions  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
57*4d495c6eSApple OSS Distributions  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
58*4d495c6eSApple OSS Distributions  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
59*4d495c6eSApple OSS Distributions  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
60*4d495c6eSApple OSS Distributions  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
61*4d495c6eSApple OSS Distributions  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
62*4d495c6eSApple OSS Distributions  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
63*4d495c6eSApple OSS Distributions  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
64*4d495c6eSApple OSS Distributions  * SUCH DAMAGE.
65*4d495c6eSApple OSS Distributions  *
66*4d495c6eSApple OSS Distributions  *	@(#)kernel.h	8.3 (Berkeley) 1/21/94
67*4d495c6eSApple OSS Distributions  */
68*4d495c6eSApple OSS Distributions #ifndef _SYS_KERNEL_H_
69*4d495c6eSApple OSS Distributions #define _SYS_KERNEL_H_
70*4d495c6eSApple OSS Distributions 
71*4d495c6eSApple OSS Distributions #include <sys/appleapiopts.h>
72*4d495c6eSApple OSS Distributions 
73*4d495c6eSApple OSS Distributions #ifdef  KERNEL
74*4d495c6eSApple OSS Distributions 
75*4d495c6eSApple OSS Distributions #include <sys/param.h>
76*4d495c6eSApple OSS Distributions 
77*4d495c6eSApple OSS Distributions #ifdef BSD_KERNEL_PRIVATE
78*4d495c6eSApple OSS Distributions #include <stdbool.h>
79*4d495c6eSApple OSS Distributions #include <kern/locks.h>
80*4d495c6eSApple OSS Distributions 
81*4d495c6eSApple OSS Distributions /* Global variables for the kernel. */
82*4d495c6eSApple OSS Distributions 
83*4d495c6eSApple OSS Distributions /* 1.1 */
84*4d495c6eSApple OSS Distributions extern long hostid;
85*4d495c6eSApple OSS Distributions extern char hostname[MAXHOSTNAMELEN];
86*4d495c6eSApple OSS Distributions extern lck_mtx_t hostname_lock;
87*4d495c6eSApple OSS Distributions extern char domainname[MAXHOSTNAMELEN];
88*4d495c6eSApple OSS Distributions extern lck_mtx_t domainname_lock;
89*4d495c6eSApple OSS Distributions 
90*4d495c6eSApple OSS Distributions /* 1.2 */
91*4d495c6eSApple OSS Distributions extern int stathz;              /* statistics clock's frequency */
92*4d495c6eSApple OSS Distributions extern int profhz;              /* profiling clock's frequency */
93*4d495c6eSApple OSS Distributions #endif /* BSD_KERNEL_PRIVATE */
94*4d495c6eSApple OSS Distributions 
95*4d495c6eSApple OSS Distributions 
96*4d495c6eSApple OSS Distributions #ifdef KERNEL_PRIVATE
97*4d495c6eSApple OSS Distributions extern struct timezone tz;                      /* XXX */
98*4d495c6eSApple OSS Distributions 
99*4d495c6eSApple OSS Distributions extern int tick;                /* usec per tick (1000000 / hz) */
100*4d495c6eSApple OSS Distributions extern int hz;                  /* system clock's frequency */
101*4d495c6eSApple OSS Distributions 
102*4d495c6eSApple OSS Distributions #endif /* KERNEL_PRIVATE */
103*4d495c6eSApple OSS Distributions 
104*4d495c6eSApple OSS Distributions #endif  /* KERNEL */
105*4d495c6eSApple OSS Distributions 
106*4d495c6eSApple OSS Distributions #endif  /* !_SYS_KERNEL_H_ */
107