+#define MAXIMUM_VOLUME_LABEL_LENGTH (32 * sizeof(WCHAR))
+
+typedef struct _VPB {
+ CSHORT Type;
+ CSHORT Size;
+ USHORT Flags;
+ USHORT VolumeLabelLength;
+ struct _DEVICE_OBJECT *DeviceObject;
+ struct _DEVICE_OBJECT *RealDevice;
+ ULONG SerialNumber;
+ ULONG ReferenceCount;
+ WCHAR VolumeLabel[MAXIMUM_VOLUME_LABEL_LENGTH / sizeof(WCHAR)];
+} VPB, *PVPB;
+
+typedef struct _DEVICE_OBJECT {
+ CSHORT Type;
+ USHORT Size;
+ LONG ReferenceCount;
+ struct _DRIVER_OBJECT *DriverObject;
+ struct _DEVICE_OBJECT *NextDevice;
+ struct _DEVICE_OBJECT *AttachedDevice;
+ struct _IRP *CurrentIrp;
+ PIO_TIMER Timer;
+ ULONG Flags;
+ ULONG Characteristics;
+ volatile PVPB Vpb;
+ PVOID DeviceExtension;
+ DEVICE_TYPE DeviceType;
+ CCHAR StackSize;
+ union {
+ LIST_ENTRY ListEntry;
+ WAIT_CONTEXT_BLOCK Wcb;
+ } Queue;
+ ULONG AlignmentRequirement;
+ KDEVICE_QUEUE DeviceQueue;
+ KDPC Dpc;
+ ULONG ActiveThreadCount;
+ PSECURITY_DESCRIPTOR SecurityDescriptor;
+ KEVENT DeviceLock;
+ USHORT SectorSize;
+ USHORT Spare1;
+ struct _DEVOBJ_EXTENSION *DeviceObjectExtension;
+ PVOID Reserved;
+} DEVICE_OBJECT, *PDEVICE_OBJECT;
+
+typedef struct _IO_REMOVE_LOCK_TRACKING_BLOCK * PIO_REMOVE_LOCK_TRACKING_BLOCK;
+
+typedef struct _IO_REMOVE_LOCK_COMMON_BLOCK {
+ BOOLEAN Removed;
+ BOOLEAN Reserved[3];
+ volatile LONG IoCount;
+ KEVENT RemoveEvent;
+} IO_REMOVE_LOCK_COMMON_BLOCK;
+
+typedef struct _IO_REMOVE_LOCK_DBG_BLOCK {
+ LONG Signature;
+ LONG HighWatermark;
+ LONGLONG MaxLockedTicks;
+ LONG AllocateTag;
+ LIST_ENTRY LockList;
+ KSPIN_LOCK Spin;
+ volatile LONG LowMemoryCount;
+ ULONG Reserved1[4];
+ PVOID Reserved2;
+ PIO_REMOVE_LOCK_TRACKING_BLOCK Blocks;
+} IO_REMOVE_LOCK_DBG_BLOCK;
+
+typedef struct _IO_REMOVE_LOCK {
+ IO_REMOVE_LOCK_COMMON_BLOCK Common;
+#if DBG
+ IO_REMOVE_LOCK_DBG_BLOCK Dbg;
+#endif
+} IO_REMOVE_LOCK, *PIO_REMOVE_LOCK;
+
+typedef struct _IO_WORKITEM *PIO_WORKITEM;
+
+typedef VOID
+(DDKAPI IO_WORKITEM_ROUTINE)(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PVOID Context);
+typedef IO_WORKITEM_ROUTINE *PIO_WORKITEM_ROUTINE;
+
+typedef struct _SHARE_ACCESS {
+ ULONG OpenCount;
+ ULONG Readers;
+ ULONG Writers;
+ ULONG Deleters;
+ ULONG SharedRead;
+ ULONG SharedWrite;
+ ULONG SharedDelete;
+} SHARE_ACCESS, *PSHARE_ACCESS;
+
+
+
+