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diff --git a/mutant.h b/mutant.h
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+/*
+ * Copyright (c) 2004 Security Architects Corporation. All rights reserved.
+ *
+ * Module Name:
+ *
+ *              mutant.h
+ *
+ * Abstract:
+ *
+ *              This module defines various types used by mutant (mutex) hooking routines.
+ *
+ * Author:
+ *
+ *              Eugene Tsyrklevich 25-Mar-2004
+ *
+ * Revision History:
+ *
+ *              None.
+ */
+
+
+#ifndef __MUTANT_H__
+#define __MUTANT_H__
+
+
+#include <NTDDK.h>
+#include "policy.h"
+#include "pathproc.h"
+#include "hookproc.h"
+#include "accessmask.h"
+#include "learn.h"
+#include "log.h"
+
+
+/*
+ * ZwCreateMutant creates or opens a mutant object. [NAR]
+ */
+
+typedef NTSTATUS (*fpZwCreateMutant) (
+        OUT PHANDLE MutantHandle,
+        IN ACCESS_MASK DesiredAccess,
+        IN POBJECT_ATTRIBUTES ObjectAttributes,
+        IN BOOLEAN InitialOwner
+        );
+
+NTSTATUS
+NTAPI
+HookedNtCreateMutant(
+        OUT PHANDLE MutantHandle,
+        IN ACCESS_MASK DesiredAccess,
+        IN POBJECT_ATTRIBUTES ObjectAttributes,
+        IN BOOLEAN InitialOwner
+        );
+
+
+/*
+ * ZwOpenMutant opens a mutant object. [NAR]
+ */
+
+typedef NTSTATUS (*fpZwOpenMutant) (
+        OUT PHANDLE MutantHandle,
+        IN ACCESS_MASK DesiredAccess,
+        IN POBJECT_ATTRIBUTES ObjectAttributes
+        );
+
+NTSTATUS
+NTAPI
+HookedNtOpenMutant(
+        OUT PHANDLE MutantHandle,
+        IN ACCESS_MASK DesiredAccess,
+        IN POBJECT_ATTRIBUTES ObjectAttributes
+        );
+
+
+BOOLEAN InitMutantHooks();
+
+
+#endif  /* __MUTANT_H__ */