FILE_BOTH_DIR_INFORMATION

2OO1, 13 April

typedef struct _FILE_BOTH_DIR_INFORMATION {



  ULONG                   NextEntryOffset;
  ULONG                   FileIndex;
  LARGE_INTEGER           CreationTime;
  LARGE_INTEGER           LastAccessTime;
  LARGE_INTEGER           LastWriteTime;
  LARGE_INTEGER           ChangeTime;
  LARGE_INTEGER           EndOfFile;
  LARGE_INTEGER           AllocationSize;
  ULONG                   FileAttributes;
  ULONG                   FileNameLength;
  ULONG                   EaSize;
  BYTE                    ShortNameLength;
  WCHAR                   ShortName[12];
  WCHAR                   FileName[1];

} FILE_BOTH_DIR_INFORMATION, *PFILE_BOTH_DIR_INFORMATION;

Structure FILE_BOTH_DIR_INFORMATION is returned as a result of call NtQueryDirectoryFile with FileBothDirectoryInformation information class. It's extended version of FILE_FULL_DIR_INFORMATION structure, additionally containing short file name. It's used in Win32 API calls FindFirstFile and FindNextFile.

NextEntryOffset Offset (in bytes) of next FILE_BOTH_DIR_INFORMATION structure placed in result buffer. If there's no more entries, NextEntryOffset is set to zero.

FileIndex File index value, or zero, if directory indexing is not avaiable.

CreationTime Time of object creation;

LastAccessTime Last access time. Means time when last open operation was performed.

LastWriteTime Time of last write data.

ChangeTime Time of last change.

EndOfFile Specify length of file, in bytes.

AllocationSize Specify real size of file on device. It must be equal or greater to EndOfFile member.

FileAttributes Attributes of file.

FileNameLength Length of FileName array, in bytes.

EaSize Size of Extended Attributes associated with file. See also FILE_EA_INFORMATION structure.

ShortNameLength Length ShortName array, in bytes.

ShortName[12] Alternate file name, in UNICODE format. Empty string means:

Primary name is compatible with 8DOT3 (MS DOS) standart, and there's no reason to set the same name twice;
File system don't improve short names;

FileName[1] UNICODE string specifing file name.

Documented by:

Tomasz Nowak

Bo Branten

Requirements:

Library: ntdll.lib

Undocumented functions of NTDLL