"Garrett D'Amore" <[EMAIL PROTECTED]> wrote:
> Jürgen Keil wrote:
> > Hmm, in the past, nothing prevented me from passing
> > ioctl parameter structures with a size > 255.
> >
> > qemu and it's kqemu kernel module are actually using such
> > a big structure with the KQEMU_EXEC ioctl.
> >
>
> Ah, but the encoded size in the ioctl will be truncated. If you don't
> *rely* on the encoded size, then there is no problem.
The only way to deal with this problem seems to be to use a
case XXX:
case XXX_OLD:
variant of the IOCTL definition.
If we were on SunOS-4.x or *BSD, the truncation would prevent the ioctl to work
but on SunOS-5.x the kernel does not copy in/out the parameters. This jub is
done inside the driver.
Having this in mind, the change in the ioctl may not be needed at all.
Jörg
--
EMail:[EMAIL PROTECTED] (home) Jörg Schilling D-13353 Berlin
[EMAIL PROTECTED] (uni)
[EMAIL PROTECTED] (work) Blog: http://schily.blogspot.com/
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