DISK_COPY_EXTERNAL (Compact 2013)

3/26/2014

This structure contains the necessary input for the IOCTL_DISK_COPY_EXTERNAL_START I/O control.

Syntax

typedef struct _DISK_COPY_EXTERNAL {
  DWORD cbSize; 
  DWORD dwDirection; 
  PVOID pUserData; 
  DWORD cbUserDataSize; 
  TCHAR szCancelEventName[MAX_PATH];
  ULARGE_INTEGER ulFileSize;
  HANDLE hCallerProc;
  DWORD cbSectorListSize;
} DISK_COPY_EXTERNAL, *PDISK_COPY_EXTERNAL;

Members

• cbSize
  Size of the structure.

• dwDirection
  The following table shows possible values.

  Flag	Description
  COPY_EXTERNAL_READ	Read from the disk into the external device.
  COPY_EXTERNAL_WRITE	Write to the disk from the external device.

• pUserData
  Pointer to the user data needed for copy external in the block driver. Can be set to NULL if not needed, in which case cbUserDataSize must be set to zero.

• cbUserDataSize
  Size of the user data, in bytes.

• szCancelEventName
  Name of the event that can be signaled to cancel the copy operation. If the even name has a length of zero, the copy cannot be canceled.

• ulFileSize
  Size of the file, in bytes.

• hCallerProc
  Handle to the calling process.

• cbSectorListSize
  Size, in bytes, of the SECTOR_LIST_ENTRY array. The array of SECTOR_LIST_ENTRY structures immediately follows the FILE_COPY_EXTERNAL structure.

Requirements

Header

diskio.h

See Also

Reference

Copy External Structures
IOCTL_DISK_COPY_EXTERNAL_START
SECTOR_LIST_ENTRY
FILE_COPY_EXTERNAL