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Message-ID: <4A4C6B5F.5060305@metalscan.fr>
Date: Thu, 02 Jul 2009 10:10:07 +0200
From: Matthieu Dubuget <matthieu.dubuget@metalscan.fr>
Reply-To: matthieu.dubuget@metalscan.fr
Organization: Metalscan
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To: caml-list@inria.fr
Subject: file mapped bigarray and Unix.unlink
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X-Spam: no; 0.00; matthieu:01 dubuget:01 matthieu:01 dubuget:01 bigarray:01 bigarray:01 unix:01 unix:01 descriptor:02 binding:02 rename:04 erased:05 fails:05 suspect:09 memory:09 

Hello,

I have difficulties to delete one file (name: fn, file descriptor:
fdesc) with "Unix.unlink fn".

I suspect that this is because I have a bigarray ba mapped with fdesc.
Is it a possible reason?

At some point, I want to delete fn because the saving operation was
cancelled by the user.

I assure that the binding to ba is lost.

Then, I close the file handle with
"Unix.close fdesc;"

At this point,
"Unix.rename fn g;" works, but
 
"Unix.unlink fn;" fails with : Permission denied error.


following my idea that this can be due to the fact that fn is mapped in
memory, I tried to insert a Gc.compact, in order for ba to be erased:

Unix.close fdesc;
Gc.compact ();
Unix.unlink fn;

but got the same error message.

Any idea?

Salutations

Matt