osfmk/kern/page_decrypt.c

   1 /*
   2  * Copyright (c) 2005-2006 Apple Computer, 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,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28
  29 #include <debug.h>
  30
  31 #include <kern/page_decrypt.h>
  32 #include <kern/task.h>
  33 #include <machine/commpage.h>
  34
  35 static dsmos_page_transform_hook_t dsmos_hook = NULL;
  36
  37 void
  38 dsmos_page_transform_hook(dsmos_page_transform_hook_t hook)
  39 {
  40         printf("DSMOS has arrived\n");
  41         /* set the hook now - new callers will run with it */
  42         dsmos_hook = hook;
  43 }
  44
  45 int
  46 dsmos_page_transform(const void* from, void *to, unsigned long long src_offset, void *ops)
  47 {
  48         static boolean_t first_wait = TRUE;
  49
  50         if (dsmos_hook == NULL) {
  51                 if (first_wait) {
  52                         first_wait = FALSE;
  53                         printf("Waiting for DSMOS...\n");
  54                 }
  55                 return KERN_ABORTED;
  56         }
  57         return (*dsmos_hook)(from, to, src_offset, ops);
  58 }
  59
  60
  61 text_crypter_create_hook_t text_crypter_create = NULL;
  62 void
  63 text_crypter_create_hook_set(text_crypter_create_hook_t hook)
  64 {
  65         text_crypter_create = hook;
  66 }