This function is documented in Windows Driver Kit.

It's very interesting NT System Call... Normally, file deletion is realised as FileDispositionInformation class in a call to NtSetInformationFile. When you use NtDeleteFile, file will be deleted immediately after call (system isn't waiting for close last HANDLE to file).

ObjectAttributes

You can manipulate ObjectName and RootDirectory members.
Example:
If you have only file name as Unicode string, use it as ObjectName.
If you have only a HANDLE to file, set it as RootDirectory. Set ObjectName as empty string.

Related Win32 API

• DeleteFile (Although it does more than just forwarding the arguments and invoking this procedure.)

Documented by

• Tomasz Nowak

See also

• NtCreateFile
• NtOpenFile
• NtSetInformationFile