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From: "Parker, Ron" <rdparker AT butlermfg DOT com>
To: cygwin-developers AT sourceware DOT cygnus DOT com
Subject: RE: New Win98 problem, similar to _unlink problem
Date: Mon, 20 Mar 2000 13:19:36 -0600
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> -----Original Message-----
> From: Chris Faylor [mailto:cgf AT cygnus DOT com]

<snip>

> You're renaming an opened file.  AFAIK, that particular problem is
> insurmountable in Windows.

I do know that under some circumstances in NT it is possible to rename an
executable while it is running and therefore open and memory mapped. I have
not yet figured out what flags are used to open a file and still allow it to
be renamed.  

Since the opening of an executable occurs deep within the OS this may be a
red herring and the file open modes that are used to allow this may not be
available to an enduser application.

A simple example of this is to create a simple C program, compile and step
into it in the debugger, then rename the EXE in Windows Explorer.  This is
allowed, but if you attempt to delete the file in Explore, access is denied.

The HandleEx and NTFilMon programs from Sysinternals showed that the
executable was in fact open while being debugged and renamed.