怎样获取IOCTL
#define FSCTL_REQUEST_OPLOCK_LEVEL_1 CTL_CODE(FILE_DEVICE_FILE_SYSTE,0,METHOD_BUFFERED,FILE_ANY_ACCESS)
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#define FSCTL_SIS_COPYFILE CTL_CODE(FILE_DEVICE,64,METHOD_BUFFERED,FILE_ANY_ACCESS)
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如何获取这些I\O控制码