svn commit: r230583 - head/sys/kern

[Bruce Evans]

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.

Bruce