Security-55163.44.tar.gz

[apple/security.git] / libsecurity_codesigning / lib / cskernel.h

diff --git a/libsecurity_codesigning/lib/cskernel.h b/libsecurity_codesigning/lib/cskernel.h
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+/*
+ * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
+ * 
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+//
+// cskernel - Kernel implementation of the Code Signing Host Interface
+//
+#ifndef _H_CSKERNEL
+#define _H_CSKERNEL
+
+#include "Code.h"
+#include "StaticCode.h"
+#include <security_utilities/utilities.h>
+
+namespace Security {
+namespace CodeSigning {
+
+
+class ProcessCode;
+
+
+//
+// The nominal StaticCode representing the kernel on disk.
+// This is barely used, since we don't validate the kernel (it's the root of trust)
+// and we don't activate new kernels at runtime.
+//
+class KernelStaticCode : public SecStaticCode {
+public:
+       KernelStaticCode();
+
+private:
+};
+
+
+//
+// A SecCode that represents the system's running kernel.
+// We usually only have one of those in the system at one time. :-)
+//
+class KernelCode : public SecCode {
+public:
+       KernelCode();
+
+       SecCode *locateGuest(CFDictionaryRef attributes);
+       SecStaticCode *identifyGuest(SecCode *guest, CFDataRef *cdhash);
+       SecCodeStatus getGuestStatus(SecCode *guest);
+       void changeGuestStatus(SecCode *guest, SecCodeStatusOperation operation, CFDictionaryRef arguments);
+       
+       static KernelCode *active()             { return globals().code; }
+       
+public:
+       struct Globals {
+               Globals();
+               SecPointer<KernelCode> code;
+               SecPointer<KernelStaticCode> staticCode;
+       };
+       static ModuleNexus<Globals> globals;
+
+protected:
+       void identify();
+       void csops(ProcessCode *proc, unsigned int op, void *addr = NULL, size_t length = 0);
+};
+
+
+} // end namespace CodeSigning
+} // end namespace Security
+
+#endif // !_H_CSKERNEL