@param This A pointer to the EFI_FILE_PROTOCOL instance that is the file
handle to get the current position on.
@param Position The address to return the file's current position value.
@retval EFI_SUCCESS The position was returned.
@retval EFI_UNSUPPORTED The request is not valid on open directories.
@retval EFI_DEVICE_ERROR An attempt was made to get the position from a deleted file.
Returns a file's current position.
@param This A pointer to the EFI_FILE_PROTOCOL instance that is the file handle to get the current position on. @param Position The address to return the file's current position value.
@retval EFI_SUCCESS The position was returned. @retval EFI_UNSUPPORTED The request is not valid on open directories. @retval EFI_DEVICE_ERROR An attempt was made to get the position from a deleted file.