MFT_ENUM_DATA_V0 structure

Contains information defining the boundaries for and starting place of an enumeration of update sequence number (USN) change journal records. It is used as the input buffer for the FSCTL_ENUM_USN_DATA control code. Prior to Windows Server 2012 this structure was named MFT_ENUM_DATA. Use that name to compile with older SDKs and compilers.

Syntax


typedef struct {
  DWORDLONG StartFileReferenceNumber;
  USN       LowUsn;
  USN       HighUsn;
} MFT_ENUM_DATA_V0, *PMFT_ENUM_DATA_V0, MFT_ENUM_DATA, *PMFT_ENUM_DATA;

Members

StartFileReferenceNumber

The ordinal position within the files on the current volume at which the enumeration is to begin.

The first call to FSCTL_ENUM_USN_DATA during an enumeration must have the StartFileReferenceNumber member set to (DWORDLONG)0. Each call to FSCTL_ENUM_USN_DATA retrieves the starting point for the subsequent call as the first entry in the output buffer. Subsequent calls must be made with StartFileReferenceNumber set to this value. For more information, see FSCTL_ENUM_USN_DATA.

LowUsn

The lower boundary of the range of USN values used to filter which records are returned. Only records whose last change journal USN is between or equal to the LowUsn and HighUsn member values are returned.

HighUsn

The upper boundary of the range of USN values used to filter which files are returned.

Requirements

Minimum supported client

Windows XP [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

Header

WinIoCtl.h (include Windows.h)

See also

Volume Management Structures
FSCTL_ENUM_USN_DATA

 

 

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