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To: cygwin AT cygwin DOT com
Subject: Re: Resolving symlinks for use with Win32 API functions
References: <u67u254igwh DOT fsf AT rachel DOT hq DOT vtech>
From: Jesper Eskilson <jojo AT virtutech DOT se>
Organization: Virtutech AB
Date: 08 Mar 2001 14:45:56 +0100
In-Reply-To: Jesper Eskilson's message of "08 Mar 2001 13:28:30 +0100"
Message-ID: <u67zoewfk6j.fsf@rachel.hq.vtech>
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Jesper Eskilson <jojo AT virtutech DOT se> writes:

> Hi!
> 
> Consider the scenario where you're using Win32 API I/O routines
> (CreateFile(), ReadFile(), etc.) to do file I/O, instead of the Cygwin ones
> (open(), read(), etc.).  How can you resolve Cygwin symlinks (either new or
> old ones) in a Cygwin-program for use with Win32 API routines?
> 
> Old ones are fairly easy to parse; just remove the "!<symlink>" string (and
> then convert the remaining path using the Cygwin API) but what about new
> style symlinks? 
> 
> One problem is that Windows shortcuts aren't transparent; actually they're
> objects in the mind of Windows Explorer and not a Win32 invention at
> all. So, in order to resolve a Windows shortcut, you need to explicitly
> call a long sequence of strange functions. There is sample code in MSDN to
> do this, however, this code wants to link with shell32.lib and include the
> file "shlwapi.h", which is nowever to be found in Cygwin.

Never mind. I just stumbled upon the readlink() call.

/Jesper
-- 
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Jesper Eskilson                                         jojo AT virtutech DOT se
Virtutech                                         http://www.virtutech.se
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