FILE_ALLOCATED_RANGE_BUFFER structure (winioctl.h)

Indicates a range of bytes in a file. This structure is used with the FSCTL_QUERY_ALLOCATED_RANGES control code. On input, the structure indicates the range of the file to search. On output, the operation retrieves an array of FILE_ALLOCATED_RANGE_BUFFER structures to indicate the allocated ranges within the search range.

Syntax

typedef struct _FILE_ALLOCATED_RANGE_BUFFER {
  LARGE_INTEGER FileOffset;
  LARGE_INTEGER Length;
} FILE_ALLOCATED_RANGE_BUFFER, *PFILE_ALLOCATED_RANGE_BUFFER;

Members

FileOffset

The file offset of the start of a range of bytes in a file, in bytes.

Length

The size of the range, in bytes.

Requirements

Requirement	Value
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

FSCTL_QUERY_ALLOCATED_RANGES

Sparse Files