Re: Implementing stat() with FindFirstFile()

From: Magnus Bäck <baeck@swipnet.se>
Date: Mar 26, 2009, 21:39 UTC
Message-ID: <20090326213907.GC27249@jeeves.jpl.local>
In-Reply-To: <49CB2BA5.1070100@viscovery.net>

On Thursday, March 26, 2009 at 08:15 CET,
     Johannes Sixt <j.sixt@viscovery.net> wrote:

Show 14 quoted lines

> Magnus Bäck schrieb:
>
> > From what I gather the problematic conversion takes place in
> > the Win32 layer, in which case we might be able to call the
> > ZwQueryDirectoryFile() kernel routine directly via ntdll.dll
> > to obtain the file times straight from the file system. Has
> > anyone explored that path, and would it be acceptable to make
> > such a change?
>
> It depends.
>
> The disadvantages are that this function is only available on
> Windows XP and later and that it is not present in the header
> files of MinGW gcc.

I'd be very surprised if ZwQueryDirectoryFile() hasn't always been around (I just verified ntdll.dll from NT 4.0), so that's not a worry. Don't know why MSDN reports it as introduced in XP.

> It's on you to prove that there are advantages that clearly
> outweigh these disadvantages.

All right, I'll see if I can find time to take a look at this. I just wanted to check that it wasn't a project policy or whatever to bypass Win32.

-- 
Magnus Bäck
baeck@swipnet.se