Mount of VSS volumes (//?/GLOBALROOT/...) does not work

Jason Pyeron jpyeron@pdinc.us
Mon May 11 21:36:00 GMT 2009


> -----Original Message-----
> From: Larry Hall (Cygwin)
> Sent: Monday, May 11, 2009 16:58
> Subject: Re: Mount of VSS volumes (//?/GLOBALROOT/...) does not work
> 
> Jason Pyeron wrote:
> > Larry Hall (Cygwin) wrote on Monday, May 11, 2009 15:07:
> > 
> >> Jason Pyeron wrote:
> >>> Sorry, I ignored the list addresses, I always try to 
> remove peoples'
> >>> addresses. (any suggestions for outlok 2003?)
> >> <http://home.in.tum.de/~jain/software/outlook-quotefix/>
> >>
> >> I don't use Outlook so I can't speak for this but I've 
> heard others 
> >> on the list mention it.
> >>
> > 
> > Sorta nice, but still does not let me munge the email 
> address, infact 
> > it gets all confused on lists. It put cygwin-owner atsign 
> cygwin.com 
> > for this email, and it is failing to strip sigs after sig 
> dashes. But it quotes mail nicely.
> 
> Sounds like it could use a patch or two. ;-)  Maybe someone 
> else on this list that uses it would have some ideas.
> 

I offered him a bounty today to OSS it, we shall see.

> >>>>> Hmm, could I get a primmer on where to look to understand more.
> >>>>> I.E. which sources/functions.
> >> 
> <http://cygwin.com/cgi-bin/cvsweb.cgi/src/winsup/cygwin/path.cc?rev=1.
> >>> 546&conten t-type=text/x-cvsweb-markup&cvsroot=src>
> >>>
> >>> Here is the question I am going with: If the path starts 
> with \\?\ 
> >>> don't strip the trailing slash, can this be cost 
> effective or only 
> >>> cost more in that case?
> >> The real question that comes into play this path 
> conversion code is 
> >> whether or not any additional check/code is cost effective.
> > 
> > Perfectly understood.
> > 
> >> This code is called constantly so a change that adds to 
> the overhead 
> >> of this call is going to be magnified many times, which is 
> obviously 
> >> a negative.
> >>
> > 
> > Has anyone done a branching analysis on it? I have not finished 
> > groking it all yet, but there is Allways Room for Improvement(TM).
> 
> I can't say.  I haven't.  Certainly if there's a way to make 
> this faster, easier, and better without any sacrifices, I 
> think that would be generally welcome. :-)

We have a new intern starting next week. I think we can take a look at it over
the next few weeks to see what is going on.

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