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/*++
Copyright (c) 1999 - 2003 Microsoft Corporation
Module Name:
CdoStruct.h
Abstract:
This is the header file defining the data structures used by the kernel mode
filter driver implementing the control device object sample.
Environment:
Kernel mode
--*/
//
// CDO sample filter global data
//
//
// GLOBAL_DATA_F_xxx flags
//
//
// Indicates that there is a open reference to the CDO
//
#define GLOBAL_DATA_F_CDO_OPEN_REF 0x00000001
//
// Indicates that there is a open handle to the CDO
//
#define GLOBAL_DATA_F_CDO_OPEN_HANDLE 0x00000002
//
// Globals
//
typedef struct _CDO_GLOBAL_DATA {
//
// Handle to minifilter returned from FltRegisterFilter()
//
PFLT_FILTER Filter;
//
// Driver object for this filter
//
PDRIVER_OBJECT FilterDriverObject;
//
// Control Device Object for this filter
//
PDEVICE_OBJECT FilterControlDeviceObject;
//
// Flags - GLOBAL_DATA_F_xxx
//
ULONG Flags;
//
// Resource to synchronize access to flags
//
ERESOURCE Resource;
#if DBG
//
// Field to control nature of debug output
//
ULONG DebugLevel;
#endif
} CDO_GLOBAL_DATA, *PCDO_GLOBAL_DATA;
extern CDO_GLOBAL_DATA Globals;
//
// The name of the CDO created by this filter
//
#define CONTROL_DEVICE_OBJECT_NAME L"\\FileSystem\\Filters\\CdoSample"
//
// Macro to test if this is my control device object
//
#define IS_MY_CONTROL_DEVICE_OBJECT(_devObj) \
(((_devObj) == Globals.FilterControlDeviceObject) ? \
(FLT_ASSERT(((_devObj)->DriverObject == Globals.FilterDriverObject) && \
((_devObj)->DeviceExtension == NULL)), TRUE) : \
FALSE)
//
// Debug helper functions
//
#if DBG
#define DEBUG_TRACE_ERROR 0x00000001 // Errors - whenever we return a failure code
#define DEBUG_TRACE_LOAD_UNLOAD 0x00000002 // Loading/unloading of the filter
#define DEBUG_TRACE_CDO_CREATE_DELETE 0x00000004 // Creation/Deletion of CDO
#define DEBUG_TRACE_CDO_SUPPORTED_OPERATIONS 0x00000008 // Supported operations on CDO
#define DEBUG_TRACE_CDO_FASTIO_OPERATIONS 0x00000010 // FastIO operations on CDO
#define DEBUG_TRACE_CDO_ALL_OPERATIONS 0x00000020 // All operations on CDO
#define DEBUG_TRACE_ALL 0xFFFFFFFF // All flags
#define DebugTrace(Level, Data) \
if ((Level) & Globals.DebugLevel) { \
DbgPrint Data; \
}
#else
#define DebugTrace(Level, Data) {NOTHING;}
#endif
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