osfmk/kern/host.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25 /*
  26  * Mach Operating System
  27  * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
  28  * All Rights Reserved.
  29  *
  30  * Permission to use, copy, modify and distribute this software and its
  31  * documentation is hereby granted, provided that both the copyright
  32  * notice and this permission notice appear in all copies of the
  33  * software, derivative works or modified versions, and any portions
  34  * thereof, and that both notices appear in supporting documentation.
  35  *
  36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  39  *
  40  * Carnegie Mellon requests users of this software to return to
  41  *
  42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  43  *  School of Computer Science
  44  *  Carnegie Mellon University
  45  *  Pittsburgh PA 15213-3890
  46  *
  47  * any improvements or extensions that they make and grant Carnegie Mellon
  48  * the rights to redistribute these changes.
  49  */
  50 /*
  51  */
  52
  53 /*
  54  *      kern/host.h
  55  *
  56  *      Definitions for host data structures.
  57  *
  58  */
  59
  60 #ifndef _KERN_HOST_H_
  61 #define _KERN_HOST_H_
  62
  63 #include <mach/mach_types.h>
  64 #include <mach/exception_types.h>
  65 #include <kern/kern_types.h>
  66
  67 #ifdef MACH_KERNEL_PRIVATE
  68 #include <kern/lock.h>
  69 #include <kern/exception.h>
  70
  71 struct  host {
  72         decl_mutex_data(,lock)          /* lock to protect exceptions */
  73         ipc_port_t host_self;
  74         ipc_port_t host_priv_self;
  75         ipc_port_t host_security_self;
  76         ipc_port_t io_master;
  77         struct exception_action exc_actions[EXC_TYPES_COUNT];
  78 };
  79
  80 typedef struct host     host_data_t;
  81
  82 extern host_data_t      realhost;
  83
  84 #define host_lock(host)         mutex_lock(&(host)->lock)
  85 #define host_unlock(host)       mutex_unlock(&(host)->lock)
  86
  87 #endif /* MACH_KERNEL_PRIVATE */
  88
  89 /*
  90  * Access routines for inside the kernel.
  91  */
  92 extern host_t host_self(void);
  93 extern host_priv_t host_priv_self(void);
  94 extern host_security_t host_security_self(void);
  95
  96 #endif  /* _KERN_HOST_H_ */