#ifndef _NTIOAPI_H
/**
* The FILE_ALIGNMENT_INFORMATION structure is used to query or set the buffer alignment required by the underlying device.
* \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ns-ntddk-_file_alignment_information
*/
typedef struct _FILE_ALIGNMENT_INFORMATION
{
ULONG AlignmentRequirement;
} FILE_ALIGNMENT_INFORMATION, *PFILE_ALIGNMENT_INFORMATION;
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This structure is documented in Windows Driver Kit.