// wdm.h

typedef struct _CLS_IO_STATISTICS_HEADER {
  UCHAR              ubMajorVersion;
  UCHAR              ubMinorVersion;
  CLFS_IOSTATS_CLASS eStatsClass;
  USHORT             cbLength;
  ULONG              coffData;
} CLS_IO_STATISTICS_HEADER, *PCLS_IO_STATISTICS_HEADER, PPCLS_IO_STATISTICS_HEADER;
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Windows Driver Kit DDI reference (ns-wdm-_cls_io_statistics_header)

_CLS_IO_STATISTICS_HEADER structure

Description

The CLFS_IO_STATISTICS_HEADER structure holds the header portion of a CLFS_IO_STATISTICS structure.

Members

`ubMajorVersion`

The major version of the CLFS_IO_STATISTICS structure.

`ubMinorVersion`

The minor version of the CLFS_IO_STATISTICS structure.

`eStatsClass`

Reserved for future use. This member is ignored.

`cbLength`

The size, in bytes, of the CLFS_IO_STATISTICS structure, including the header.

`coffData`

The offset, in bytes, from the beginning of the CLFS_IO_STATISTICS structure to the beginning of the statistics data. This member allows for transparent modifications to the header.

CLS_IO_STATISTICS_HEADER - NtDoc