From: Hugh Sasse <hgs@...>
Date: 2008-10-23T18:54:15+09:00
Subject: Re: Cygwin: Dir.glob ALWAYS accesses floppy??



On Thu, 23 Oct 2008, Robert Klemme wrote:

> On 22.10.2008 20:05, Hugh Sasse wrote:
> > Following up to myself, but anyway:
> > 
> > On Wed, 22 Oct 2008, Hugh Sasse wrote:
> > 
> > > On Wed, 22 Oct 2008, Robert Klemme wrote:
> > > 
> > > > 2008/10/21 Hugh Sasse <hgs@dmu.ac.uk>:
> 
> > > strace ruby -e 'puts Dir["/cygdrive/c/*{.txt,.bat}"]'
> > > doesn't touch the A drive.  I wonder.  I'll have to strace the program I'm
> > > running, itself.  Probably something messes with the
> > > definition of glob.
> > 
> > I've not done this yet, partly because there is a Huge amount of output
> > from strace, and I'm not entirely sure what to search for, but partly
> > because I have investigated other things
> 
> I would be searching for "/cygdrive/a" and see what you get.  If that fails,
> I'd probably search for "/cygdrive" only and then for IO calls ("open" and the
> like).


Thanks.

This problem just gets better.  I've not rebooted, but now it is not
accessing the A: drive.  With or without strace, the drive is not accessed.

I didn't see eny refs to /cygdrive/a when I did 
strace ruby ./ff.rb -i ~ | grep -C 8 /cygdrive/a
and dropping the /a turns up way too much.

Just retried, and now it does access it but the grep still doesn't find
anything.  It is using the correct ruby -- the cygwin one.

OK, I think I won't pursue this any further, because it feels like
"we're on a road to nowhere".  I got the version with 
Find.find working last night, so I'm going to see if that finishes
in a sensible amount of time.

I think there's enough of this left in the archives for someone else
to explore it.  I'm using Ferret_helper, and version 1.1.1, to get these
problems.  1.2.1 will use Find.find.  My release which should have had
the number 1.2.0 after I took it over from Stuart Rackham didn't get the
number updated, but it uses the same as 1.1.0 for this bit of code.
So if anyone poking in the archives feels inclined to explore this further...

I think all will change with cygwin 1.7 anyway, though.
> 
> > > > hint what causes the floppy access. The only other thing that comes to
> > > > mind is a virus scanner that for some reason during drive accesses
> > > > checks the floppy.
> > > Does Symantec Endpoint Protection do that?  Why not for the short
> > > example?  It will take me a while to figure that out!
> > 
> > No closer to finding out about that.
> 
> No traces in documentation about handling of removable disks?
> 
> > The globbing on my Windows XP system took over a day.  I'm thinking of
> > rewriting that bit using File.find.  I've also found that I can't kill it
> > with <ctrl-C> while it is globbing.
> 
> :-)
> 
> Kind regards
> 
> 	robert
> 
        Thank you,
        Hugh