DEVICE_OBJECT结构参数

typedef struct DECLSPEC_ALIGN(MEMORY_ALLOCATION_ALIGNMENT) _DEVICE_OBJECT
{
    CSHORT Type;
    USHORT Size;
    LONG ReferenceCount;
    /*指向驱动程序中驱动对象的指针*/
    struct _DRIVER_OBJECT *DriverObject;
    /*指向下一个设备对象的指针*/
    struct _DEVICE_OBJECT *NextDevice;
    struct _DEVICE_OBJECT *AttachedDevice;
    /*当前IRP结构*/
    struct _IRP *CurrentIrp;
    PIO_TIMER Timer;
    /*设备对象的特性标志*/
    ULONG Flags;
    ULONG Characteristics;
    _volatile PVPB Vpb;
    /*指向设备扩展对象的指针*/
    PVOID DeviceExtension;
    /*指明设备类型*/
    DEVICE_TYPE DeviceType;
    /*堆栈的最小层数*/
    CCHAR StackSize;
    union {
        LIST_ENTRY ListEntry;
        WAIT_CONTEXT_BLOCK Wcb;
    } Queue;
    /*内存对齐*/
    ULONG AlignmentRequirement;
    KDEVICE_QUEUE DeviceQueue;
    KDPC Dpc;
    /*
    *下列成员用于支持文件系统的互斥操作
    *以便对文件系统处理线程使用设备的计数保持跟踪
    */
    ULONG ActiveThreadCount;
    PSECURITY_DESCRIPTOR SecurityDescriptor;
    KEVENT DeviceLock;
 
    USHORT SectorSize;
    USHORT Spare1;
 
    struct _DEVOBJ_EXTENSION  *DeviceObjectExtension;
    PVOID  Reserved;
 
} DEVICE_OBJECT;
typedef struct _DEVICE_OBJECT *PDEVICE_OBJECT;