Date: Sat, 17 Feb 2001 20:31:43 +0200
From: "Eli Zaretskii" <eliz AT is DOT elta DOT co DOT il>
Sender: halo1 AT zahav DOT net DOT il
To: "Mark E." <snowball3 AT bigfoot DOT com>
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CC: djgpp-workers AT delorie DOT com
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Subject: Re: O_TEMPORARY
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> From: "Mark E." <snowball3 AT bigfoot DOT com>
> Date: Fri, 16 Feb 2001 18:33:10 -0500
> 
> The only flaw I see is if 
> the file is opened first without O_TEMPORARY, the second open with 
> O_TEMPORARY won't be able to find out about the first one.
> 
> Ideas on what to do here and why are definitely welcome.

After spending some time thinking about this and playing with several
ideas, I came to a conclusion that the simplest way is the best.  That
is, simply record each open file in the per-handle array that you
invented for the O_TEMPORARY feature, even if it is not open with
O_TEMPORARY.  You will have to flag the ``normal'' (non-temporary)
handles in some way, so that a call to _close won't remove them unless
the same file is later open with O_TEMPORARY.  When a file is open
with O_TEMPORARY, search for the same file name in the array of
recorded handles, and if you find the name, treat it as a call to
`dup'.

Another issue related to this is what about the files that are opened
with O_TEMPORARY, but not explicitly closed before the program exits.
I guess we will need to make an exit hook along the lines of the hook
in stdiohk.c, which is called by the exit code.