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Re: Expected msgrcv(2) behaviour with msgsz > SSIZE_MAX ?

On Sat, Jan 03, 2009 at 12:25:32PM +0100, Nicolas Joly wrote:
> I was thinking about this a little more, and noticed that msgrcv will
> return negatives values for msgsz exceeding SSIZE_MAX ... in that
> range, a msgsz value of SIZE_MAX will make the syscall return a value
> of -1 as bytes received which will be hard to distinguish from an
> error.

I suspect a size that large is too big !!!

Fortunately we are not Linux ... (which doesn't have a separate system
call return register for 'errno' - but converts small -ve return values
to -1 + errno).


David Laight:

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