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From:	"Stephano Mariani" <sk DOT mail AT btinternet DOT com>
To:	"'Chris January'" <chris AT atomice DOT net>, <cygwin AT cygwin DOT com>
Subject:	RE: cygwin.com suggestions
Date:	Fri, 15 Mar 2002 23:37:39 -0000
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You cannot rename the existing file if it is in use. I found out the
hard way :)

Stephano Mariani

> -----Original Message-----
> From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On
Behalf
> Of Chris January
> Sent: Friday, 15 March 2002 11:34 PM
> To: cygwin AT cygwin DOT com
> Subject: Re: cygwin.com suggestions
> 
> > >>>>2) Include in the FAQ (or somewhere) a section on "How to Safely
> Update the Cygwin dll". Probably just "shut down all cygwin apps,
> including
> daemons", but it would be useful to know for sure.
> > >>>>
> > >>>The next release of setup.exe automatically address's this and
will
> > >>>replace in-use .dll's.
> > >>>
> > >>Really? How does it do that? Because I was under the impression
that
> if
> a program was running you cannot replace it's .exe file (or .dll file)
> because it was opened exclusively by Windows. How do you get around
that?
> > >
> > > Same way as Windows installers work.  Just schedule the DLL to be
> moved
> in
> > > after reboot.
> >
> > But that doesn't really replace the current DLL. IOW the changes are
not
> > effective until one reboots. Personally I find this a crummy way to
do
> > things but perhaps that's all that can be done.
> Under Win NT/2k/XP it is actually possible to replace a DLL file
that's
> currently in use without rebooting. You rename the existing file to
> something else, then copy the new file in its place. Then add the old
file
> to the MoveFileEx list of files to delete on reboot. That way the new
file
> is installed straight away.
> 
> Regards
> Chris
> 
> 
> 
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