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Message-ID: <530FCFB08F31D411A47F009027D5D01F324A18@conan.operations.bluestone.com>
From: "Halim, Salman" <salman AT bluestone DOT com>
To: "'Randall R Schulz '" <rschulz AT teknowledge DOT com>,
        "'Earnie Boyd '"
	 <earnie_boyd AT yahoo DOT com>,
        "'Jens Yllman '" <jens AT uniweb DOT se>,
        "'GNUWin32 '"
	 <cygwin AT sources DOT redhat DOT com>
Subject: RE: What does ls do?
Date: Mon, 24 Jul 2000 15:13:12 -0400
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i agree; while i haven't had a virus scanner trigger, i do occasionally get
'unable to access file' (or some such) messages with already open files
whenever i try an 'lf -F'.  i didn't think it a problem because it makes
sense that it would be done this way on windows :)

salman.

-----Original Message-----
From: Randall R Schulz
To: Earnie Boyd; Jens Yllman; GNUWin32
Sent: 7/24/00 2:21 PM
Subject: Re: What does ls do?

Jens, Earnie,

One can also infer some of ls's or the Cygwin DLL's "stat" activities
from 
their behavior.

I've observed that files that begin with "#!" will get tagged with an 
execute bit. Obviously the implication is that the file's contents are 
examined when the file is "stat"-ed, since the executability of #!
scripts 
is not a Windows feature, but rather one that is emulated by the Cygwin
DLL.

Thus an "ls -l" or "ls -F" or "ls -t" or any ls option that requires
that 
files be "stat"-ed will be slow when applied to directories with lots of

files. Likewise, virus scanners are also going to be triggered by a
"stat" 
call. This will slow things down further...

Randall Schulz
Teknolwedge Corp.
Palo Alto, CA USA


At 10:08 AM 07/24/2000 , Earnie Boyd wrote:
>--- Jens Yllman <jens AT uniweb DOT se> wrote:
> >  What does ls realy do? The reason I wonder is because I just
noticed that
> > my virus program gets triggered for every file that is in the
directory
> > that where I use ls. And all the file with the right(wrong)
extension
> > get search by the virusprogram. And this makes ls very slow.
> >
>
>The best answer to your question about ls is "Use the source, Luke".
Your
>virus program must be triggered by a file being opened or even stat'ed.
If
>this is the case then all programs not just Cygwin ones will be
affected.  The
>only cure that I've found is to disable the dynamic virus protection
and
>periodically check your files for viruses.
>
>Cheers,
>
>   Earnie Boyd: <mailto:earnie_boyd AT yahoo DOT com>


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