svn commit: r230583 - head/sys/kern

[Kostik Belousov]

On Fri, Jan 27, 2012 at 07:50:30PM +1100, Bruce Evans wrote:
> On Thu, 26 Jan 2012, Gleb Smirnoff wrote:
> 
> >On Thu, Jan 26, 2012 at 11:53:57PM +1100, Bruce Evans wrote:
> >B> > @@ -1552,6 +1552,12 @@ aio_aqueue(struct thread *td, struct aio
> >B> > 		return (error);
> >B> > 	}
> >B> >
> >B> > +	/* XXX: aio_nbytes is later casted to signed types. */
> >B> > +	if ((int)aiocbe->uaiocb.aio_nbytes < 0) {
> >B>
> >B> This should avoid implementation-defined behaviour by checking if
> >B>
> >B>  	(uncast)aiocbe->uaiocb.aio_nbytes > INT_MAX.
> 
> >Is the attached patch okay?
> 
> Yes.  It now matches the style used for read^Wsys_read() and friends.
> This used to have to fit the count in "int uio_resid".  uio_resid now
> has type ssize_t, but for some reason the old INT_MAX limits remain.

Well, I can revive the patch. I still think it is good to get rid of
the limit.
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