// winioctl.h

typedef struct _DUPLICATE_EXTENTS_DATA {
  HANDLE        FileHandle;
  LARGE_INTEGER SourceFileOffset;
  LARGE_INTEGER TargetFileOffset;
  LARGE_INTEGER ByteCount;
} DUPLICATE_EXTENTS_DATA, *PDUPLICATE_EXTENTS_DATA;
View the official Win32 API reference

NtDoc

No description available.

Edit description on GitHub

Win32 API reference (ns-winioctl-duplicate_extents_data)

DUPLICATE_EXTENTS_DATA structure

Description

Contains parameters for the FSCTL_DUPLICATE_EXTENTS_TO_FILE control code that performs the Block Cloning operation.

Members

`FileHandle`

A handle to the source file from which the byte range is to be copied. To retrieve a file handle, use the CreateFile function.

`SourceFileOffset`

The offset, in bytes, to the beginning of the range to copy from the source file.

`TargetFileOffset`

The offset, in bytes, to place the copied byte range in the destination file.

`ByteCount`

The length, in bytes, of the range to copy.

DUPLICATE_EXTENTS_DATA - NtDoc