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READ_FILE_USN_DATA structure (winioctl.h)

  • Article

Specifies the versions of the update sequence number (USN) change journal supported by the application. This structure is the input structure to the FSCTL_READ_FILE_USN_DATA control code.

Syntax

typedef struct {
  WORD MinMajorVersion;
  WORD MaxMajorVersion;
} READ_FILE_USN_DATA, *PREAD_FILE_USN_DATA;

Members

MinMajorVersion

The lowest version of the USN change journal accepted by the application. If the input buffer is not specified this defaults to 2.

MaxMajorVersion

The highest version of the USN change journal accepted by the application. If the input buffer is not specified this defaults to 2. To support 128-bit file identifiers used by ReFS this must be 3 or higher.

Requirements

Requirement Value
Minimum supported client None supported
Minimum supported server Windows Server 2012 [desktop apps only]
Header winioctl.h (include Windows.h)

See also

FSCTL_READ_USN_JOURNAL

Volume Management Structures