osfmk/kern/host.h

   1 /*
   2  * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33 /*
  34  * Mach Operating System
  35  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
  36  * All Rights Reserved.
  37  *
  38  * Permission to use, copy, modify and distribute this software and its
  39  * documentation is hereby granted, provided that both the copyright
  40  * notice and this permission notice appear in all copies of the
  41  * software, derivative works or modified versions, and any portions
  42  * thereof, and that both notices appear in supporting documentation.
  43  *
  44  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  45  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  46  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  47  *
  48  * Carnegie Mellon requests users of this software to return to
  49  *
  50  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  51  *  School of Computer Science
  52  *  Carnegie Mellon University
  53  *  Pittsburgh PA 15213-3890
  54  *
  55  * any improvements or extensions that they make and grant Carnegie Mellon
  56  * the rights to redistribute these changes.
  57  */
  58
  59 /*
  60  *      kern/host.h
  61  *
  62  *      Definitions for host data structures.
  63  *
  64  */
  65
  66 #ifndef _KERN_HOST_H_
  67 #define _KERN_HOST_H_
  68
  69 #include <mach/mach_types.h>
  70 #include <sys/cdefs.h>
  71
  72 #ifdef  MACH_KERNEL_PRIVATE
  73
  74 #include <kern/lock.h>
  75 #include <kern/exception.h>
  76 #include <mach/exception_types.h>
  77 #include <mach/host_special_ports.h>
  78 #include <kern/kern_types.h>
  79
  80
  81 struct  host {
  82         decl_mutex_data(,lock)          /* lock to protect exceptions */
  83         ipc_port_t special[HOST_MAX_SPECIAL_PORT + 1];
  84         struct exception_action exc_actions[EXC_TYPES_COUNT];
  85 };
  86
  87 typedef struct host     host_data_t;
  88
  89 extern host_data_t      realhost;
  90
  91 #define host_lock(host)         mutex_lock(&(host)->lock)
  92 #define host_unlock(host)       mutex_unlock(&(host)->lock)
  93
  94 #endif  /* MACH_KERNEL_PRIVATE */
  95
  96 /*
  97  * Access routines for inside the kernel.
  98  */
  99
 100 __BEGIN_DECLS
 101
 102 extern host_t                   host_self(void);
 103 extern host_priv_t              host_priv_self(void);
 104 extern host_security_t  host_security_self(void);
 105
 106 __END_DECLS
 107
 108 #endif  /* _KERN_HOST_H_ */