1  /*
 2   * Copyright (c) 2005-2008 Apple Inc. All rights reserved.
 3   *
 4   * @APPLE_OSREFERENCE_LICENSE_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 License
10   * may not be used to create, or enable the creation or redistribution of,
11   * unlawful or unlicensed copies of an Apple operating system, or to
12   * circumvent, violate, or enable the circumvention or violation of, any
13   * terms of an Apple operating system software license agreement.
14   *
15   * Please obtain a copy of the License at
16   * http://www.opensource.apple.com/apsl/ and read it before using this file.
17   *
18   * The Original Code and all software distributed under the License are
19   * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20   * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21   * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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23   * Please see the License for the specific language governing rights and
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26   * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27   */
28  
29  #ifdef  KERNEL_PRIVATE
30  
31  #ifndef _KERN_PAGE_DECRYPT_H
32  #define _KERN_PAGE_DECRYPT_H
33  
34  #include <mach/machine.h>
35  
36  /*
37   * Interface for DSMOS
38   */
39  typedef int     (*dsmos_page_transform_hook_t) (const void *, void*, unsigned long long, void *);
40  extern  void    dsmos_page_transform_hook(dsmos_page_transform_hook_t hook);    /* exported */
41  
42  extern  int     dsmos_page_transform(const void *, void*, unsigned long long, void*);
43  
44  
45  /*
46   * Interface for text decryption family
47   */
48  struct pager_crypt_info {
49  	/* Decrypt one page */
50  	int     (*page_decrypt)(const void *src_vaddr, void *dst_vaddr,
51  	    unsigned long long src_offset, void *crypt_ops);
52  	/* Pager using this crypter terminates - crypt module not needed anymore */
53  	void    (*crypt_end)(void *crypt_ops);
54  	/* Private data for the crypter */
55  	void    *crypt_ops;
56  	volatile int    crypt_refcnt;
57  };
58  typedef struct pager_crypt_info pager_crypt_info_t;
59  
60  struct crypt_file_data {
61  	char          *filename;
62  	cpu_type_t     cputype;
63  	cpu_subtype_t  cpusubtype;
64  };
65  typedef struct crypt_file_data crypt_file_data_t;
66  
67  typedef int (*text_crypter_create_hook_t)(struct pager_crypt_info *crypt_info,
68      const char *id, void *crypt_data);
69  extern void text_crypter_create_hook_set(text_crypter_create_hook_t hook);
70  extern text_crypter_create_hook_t text_crypter_create;
71  
72  #endif  /* _KERN_PAGE_DECRYPT_H */
73  
74  #endif  /* KERNEL_PRIVATE */