Date: Mon, 16 Jun 2003 10:06:45 -0700 From: John-Mark Gurney <gurney_j@efn.org> To: Bruce Evans <bde@zeta.org.au> Cc: arch@freebsd.org Subject: Re: make /dev/pci really readable Message-ID: <20030616170645.GI73854@funkthat.com> In-Reply-To: <20030616193932.X27844@gamplex.bde.org> References: <20030616074122.GF73854@funkthat.com> <20030616193932.X27844@gamplex.bde.org>
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Bruce Evans wrote this message on Mon, Jun 16, 2003 at 19:42 +1000:
> On Mon, 16 Jun 2003, John-Mark Gurney wrote:
>
> > Does anyone have an objection to making /dev/pci really honor the
> > permissions, and giving normal users (or just group wheel) premission
> > to run pciconf -l. Right now the code requires the write bit set for
> > any operation.
>
> IIRC, it is like it is because reading it may have side effects (and
> thus isn't really just reading). If it honored the permissions then
> it should have mode 600 so that normal users can't run pciconf -l :-].
Now if we were reading the pci registers with -r, then yes, but -l just
copys the data from pci_devinfo. If we wanted to make -r readable, we'd
have to clamp the registers passed in, and make sure that all platforms
didn't trap on PCI register reads (a patch for sparc should be going in
soon).
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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