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On Sun, Oct 01, 2006 at 09:52:42AM +0100, Iain Hibbert wrote:
> On Sun, 1 Oct 2006, Juan RP wrote:
>=20
> > On Sun, 1 Oct 2006 08:07:14 +0200
> > Juan RP <juan@xtrarom.org> wrote:
> >
> > > Code updated... anyway I can't test because the uvm_mmap call in
> > > prop_dictionary_copyout_ioctl() from prop_kern.c returns ENOMEM.
> > >
> > > drvctl -p cpu0 works...
> > >
> > > Any idea?
> >
> > Interesting... if I use prop_dictionary_sendrecv_ioctl in powerctl.c it
> > works but not with prop_dictionary_recv_ioctl that always returns
> > ENOMEM.
>=20
> I think when you use _IOWR then you also must use _sendrecv_ (will look
> properly in a bit, but I think both ioctls you have are IOWR?)

There's no "must".  _IO?? defines what the kernel should do with the
data, no matter what function you use that does the ioctl.

Anyway, now that prop_dictionary_recv_ioctl is just one ioctl call, it
can be used with _IOR.

--=20
Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
"You could have made it, spitting out benchmarks
Owe it to yourself not to fail"
Amplifico, Spitting Out Benchmarks, Hometakes Vol. 2, 2005.

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