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Mail Archives: cygwin-developers/2000/04/02/21:10:34

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Message-Id: <200004030110.UAA11749@hp2.xraylith.wisc.edu>
To: cygwin-developers AT sourceware DOT cygnus DOT com
Subject: Re: Permission denied with makeinfo from texinfo-4.0
In-reply-to: Your message of "Sun, 02 Apr 2000 20:46:34 EDT."
<20000402204634 DOT D23469 AT cygnus DOT com>
Date: Sun, 02 Apr 2000 20:10:17 -0500
From: Mumit Khan <khan AT NanoTech DOT Wisc DOT EDU>

Christopher Faylor <cgf AT cygnus DOT com> writes:
> 
> Are we sure that this is a correct analysis?  The previous analysis was
> that ReadFile was being passed a length which was larger than its
> supplied buffer.  That is (to me) inarguably wrong.  You can't say "I
> know how big the file is" because you can *never* know how big the file
> is in a multi-tasking operating system.
> 
> It seems like Dave Bryan went to some effort to track this down and I don't
> see that his analysis is incorrect.

Dave's analysis is certainly correct, he's done a much more thorough
analysis of the situation. I had obviously neglected to read through
the entire thread, and missed some of the analysis.

However, read IMO should not care whether I pass it a valid buffer or 
not if it's at end of file, and should return success and 0 bytes read
instead. Doesn't excuse buggy code of course, but my reading of POSIX 
`read' requires this behaviour.

Regards,
Mumit

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