#ifndef _NTIOAPI_H

/**
 * The FILE_END_OF_FILE_INFORMATION structure is used to set end-of-file information for a file.
 * \sa https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/ntddk/ns-ntddk-_file_end_of_file_information
 */
typedef struct _FILE_END_OF_FILE_INFORMATION
{
    LARGE_INTEGER EndOfFile;
} FILE_END_OF_FILE_INFORMATION, *PFILE_END_OF_FILE_INFORMATION;

#endif
View code on GitHub

// ntddk.h

typedef struct _FILE_END_OF_FILE_INFORMATION {
  LARGE_INTEGER EndOfFile;
} FILE_END_OF_FILE_INFORMATION, *PFILE_END_OF_FILE_INFORMATION;
View the official Windows Driver Kit DDI reference

NtDoc

This structure is documented in Windows Driver Kit.

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Windows Driver Kit DDI reference (ns-ntddk-_file_end_of_file_information)

_FILE_END_OF_FILE_INFORMATION structure

Description

The FILE_END_OF_FILE_INFORMATION structure is used as an argument to the ZwSetInformationFile routine.

Members

`EndOfFile`

The absolute new end of file position as a byte offset from the start of the file.

Remarks

EndOfFile specifies the byte offset to the end of the file. Because this value is zero-based, it actually refers to the first free byte in the file: that is, it is the offset to the byte immediately following the last valid byte in the file.

FILE_END_OF_FILE_INFORMATION - NtDoc