How to tell who has a file locked?

[Douglas Martin]

How can I get more information about a file that I am trying to open and lock that is already open by another user on the network? I get an error 70 when trying to open the file. I would lke to be able to tell the user which user and what station on the network has the file opened.

[Michael Mattias]

This has come up here before.

UNless I am mistaken, someone came up with a solution, but it used one of the "Don't use this API unless desperate" functions. I think the function was something like "NTQuerySystemInformation" or "NTQueryHandles, " something like that.

I'm pretty sure the function name started with "NtQuery" so you could try a search here on that token.

MCM

[David Roberts]

Not sure if the following would give enough information. It was listed in my RSS feeds yesterday and I have it on-board right now.

Unlocker

[Cliff Nichols]

Both Pierre, and myself did this line not far back. But MCM is correct, it is using "UnDocumented" API calls (Although they exist, no guarantee they work, or are available on on OS systems, nor in the future)

It was about late August of last year, but we each posted to the Source Code Forum. (I think it was before the PB Change because I can not find my code in search, but found Pierre's at NtQuerySystemInformation with %SystemHandleInformation

Maybe someone elses search will turn up more. But I believe Pierre's and my code will get you close, but I don't think either of us did the same for a process on a remote computer just yet.