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Date: Sat, 9 Jun 2001 23:36:11 +0200
From: Corinna Vinschen <vinschen AT redhat DOT com>
To: cygwin-developers AT cygwin DOT com
Subject: Re: dtable changes causing _very_ slow startup and process-startup headache. [was Re: auto-import ld]
Message-ID: <20010609233611.A1144@cygbert.vinschen.de>
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In-Reply-To: <02aa01c0f08c$e6f5a5c0$0200a8c0@lifelesswks>; from robert.collins@itdomain.com.au on Sat, Jun 09, 2001 at 12:35:51PM +1000

On Sat, Jun 09, 2001 at 12:35:51PM +1000, Robert Collins wrote:
> 
> ----- Original Message -----
> From: "Corinna Vinschen" <vinschen AT redhat DOT com>
> >
> > I'm in a workgroup either and I have a 2nd box which is a domain
> > member. Both boxes don't have the delay. Could you please debug
> > that further?
> 
> Sure. The long delay occurs on security.cc:230, the call to
>  NetServerEnum(NULL, 101, (LPBYTE *) &buf, MAX_PREFERRED_LENGTH,
> &cnt, &tot, SV_TYPE_DOMAIN_CTRL, primary, NULL).
> 
> 
> I have no other MS machines on my LAN, or in the workgroup. Further to
> that MS networking services such as the computer browser and "Server"
> service are not running on my machine. (Funnily enough I like having RAM
> from my use :] ).
> 
> I suspect that the NetServerEnum call is forcing the redirector to try
> and find a MS Networking server by broadcasts :[.
> 
> I'm not quite sure what assumptions are made in the code about how the
> get_lsa_srv_inf funciton operates ... but I wonder if it's possible to
> optimise out this call if the (username's domain is NULL ) || (the
> username's domain == machine name) ?

I had another problem with LookupAccountSid() which doesn't always
return correct information after an impersonation to another user logon
was performed.

I have partly reverted my previous patch to internal_getlogin() and
added code which should work mostly reliable even when switching
the user context. It's now seteuid()s job to set $USERNAME and
$USERDOMAIN to the correct values since it can set them before the
impersonation, when LookupAccountSid() still returns the correct
information.

Back to your question: The Lsa code is now only called if the
logon server isn't retrieved already from the environment or by
a NetWkstaUserGetInfo() call.

I hope that eliminates the 30sec delay.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.