#ifndef _NTIOAPI_H
/**
* The FILE_VALID_DATA_LENGTH_INFORMATION structure is used to set the valid data length information for a file.
* @sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ns-ntddk-_file_valid_data_length_information
*/
typedef struct _FILE_VALID_DATA_LENGTH_INFORMATION
{
LARGE_INTEGER ValidDataLength;
} FILE_VALID_DATA_LENGTH_INFORMATION, *PFILE_VALID_DATA_LENGTH_INFORMATION;
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This structure is documented in Windows Driver Kit.