Metadatacopystruct _COMPOSITEFS_LAYER_INFORMATION { unsigned long DeviceType;/* 0x0 4 */ /* 4 bytes padding */ union { struct _BLOCK_IO_LAYER_INFORMATION BlockIo;/* 0x8 8 */ struct _CIMFS_LAYER_INFORMATION Cimfs;/* 0x8 48 */ } u;/* 0x8 48 */};