libsecurity_codesigning/lib/cskernel.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_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. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 //
  25 // cskernel - Kernel implementation of the Code Signing Host Interface
  26 //
  27 #ifndef _H_CSKERNEL
  28 #define _H_CSKERNEL
  29
  30 #include "Code.h"
  31 #include "StaticCode.h"
  32 #include <security_utilities/utilities.h>
  33
  34 namespace Security {
  35 namespace CodeSigning {
  36
  37
  38 class ProcessCode;
  39
  40
  41 //
  42 // The nominal StaticCode representing the kernel on disk.
  43 // This is barely used, since we don't validate the kernel (it's the root of trust)
  44 // and we don't activate new kernels at runtime.
  45 //
  46 class KernelStaticCode : public SecStaticCode {
  47 public:
  48         KernelStaticCode();
  49
  50 private:
  51 };
  52
  53
  54 //
  55 // A SecCode that represents the system's running kernel.
  56 // We usually only have one of those in the system at one time. :-)
  57 //
  58 class KernelCode : public SecCode {
  59 public:
  60         KernelCode();
  61
  62         SecCode *locateGuest(CFDictionaryRef attributes);
  63         SecStaticCode *identifyGuest(SecCode *guest, CFDataRef *cdhash);
  64         SecCodeStatus getGuestStatus(SecCode *guest);
  65         void changeGuestStatus(SecCode *guest, SecCodeStatusOperation operation, CFDictionaryRef arguments);
  66
  67         static KernelCode *active()             { return globals().code; }
  68
  69 public:
  70         struct Globals {
  71                 Globals();
  72                 SecPointer<KernelCode> code;
  73                 SecPointer<KernelStaticCode> staticCode;
  74         };
  75         static ModuleNexus<Globals> globals;
  76
  77 protected:
  78         void identify();
  79         void csops(ProcessCode *proc, unsigned int op, void *addr = NULL, size_t length = 0);
  80 };
  81
  82
  83 } // end namespace CodeSigning
  84 } // end namespace Security
  85
  86 #endif // !_H_CSKERNEL