--- /dev/null
+/* $Id: ver.c,v 1.1 2004/11/07 13:08:24 hyperion Exp $
+ *
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS NT Layer DLL
+ * FILE: lib/ntdll/ver/ver.c
+ * PURPOSE: Operating system version checking
+ * PROGRAMMERS: KJK::Hyperion
+ * HISTORY: 2004-11-07: Created (imported from Wine)
+ */
+
+#include <ddk/ntddk.h>
+
+/*
+ Header hell made me do it, don't blame me. Please move these somewhere more
+ sensible
+*/
+#define VER_EQUAL 1
+#define VER_GREATER 2
+#define VER_GREATER_EQUAL 3
+#define VER_LESS 4
+#define VER_LESS_EQUAL 5
+#define VER_AND 6
+#define VER_OR 7
+
+#define VER_CONDITION_MASK 7
+#define VER_NUM_BITS_PER_CONDITION_MASK 3
+
+#define VER_MINORVERSION 0x0000001
+#define VER_MAJORVERSION 0x0000002
+#define VER_BUILDNUMBER 0x0000004
+#define VER_PLATFORMID 0x0000008
+#define VER_SERVICEPACKMINOR 0x0000010
+#define VER_SERVICEPACKMAJOR 0x0000020
+#define VER_SUITENAME 0x0000040
+#define VER_PRODUCT_TYPE 0x0000080
+
+#define VER_NT_WORKSTATION 0x0000001
+#define VER_NT_DOMAIN_CONTROLLER 0x0000002
+#define VER_NT_SERVER 0x0000003
+
+ULONGLONG NTAPI VerSetConditionMask
+(
+ IN ULONGLONG dwlConditionMask,
+ IN DWORD dwTypeBitMask,
+ IN BYTE dwConditionMask
+)
+{
+ if(dwTypeBitMask == 0)
+ return dwlConditionMask;
+
+ dwConditionMask &= VER_CONDITION_MASK;
+
+ if(dwConditionMask == 0)
+ return dwlConditionMask;
+
+ if(dwTypeBitMask & VER_PRODUCT_TYPE)
+ dwlConditionMask |= dwConditionMask << 7 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_SUITENAME)
+ dwlConditionMask |= dwConditionMask << 6 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_SERVICEPACKMAJOR)
+ dwlConditionMask |= dwConditionMask << 5 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_SERVICEPACKMINOR)
+ dwlConditionMask |= dwConditionMask << 4 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_PLATFORMID)
+ dwlConditionMask |= dwConditionMask << 3 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_BUILDNUMBER)
+ dwlConditionMask |= dwConditionMask << 2 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_MAJORVERSION)
+ dwlConditionMask |= dwConditionMask << 1 * VER_NUM_BITS_PER_CONDITION_MASK;
+ else if(dwTypeBitMask & VER_MINORVERSION)
+ dwlConditionMask |= dwConditionMask << 0 * VER_NUM_BITS_PER_CONDITION_MASK;
+
+ return dwlConditionMask;
+}
+
+/* EOF */