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FILE_STANDARD_INFORMATION structure (wdm.h)

  • Article

The FILE_STANDARD_INFORMATION structure is used as an argument to routines that query or set file information.

Syntax

typedef struct _FILE_STANDARD_INFORMATION {
  LARGE_INTEGER AllocationSize;
  LARGE_INTEGER EndOfFile;
  ULONG         NumberOfLinks;
  BOOLEAN       DeletePending;
  BOOLEAN       Directory;
} FILE_STANDARD_INFORMATION, *PFILE_STANDARD_INFORMATION;

Members

AllocationSize

The file allocation size in bytes. Usually, this value is a multiple of the sector or cluster size of the underlying physical device.

EndOfFile

The end of file location as a byte offset.

NumberOfLinks

The number of hard links to the file.

DeletePending

The delete pending status. TRUE indicates that a file deletion has been requested.

Directory

The file directory status. TRUE indicates the file object represents a directory.

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.

Requirements

Requirement Value
Header wdm.h (include Wdm.h, Ntddk.h, Ntifs.h)

See also

ZwCreateFile

ZwQueryInformationFile

ZwSetInformationFile