Skip site navigation (1)Skip section navigation (2)
Date:      Thu, 21 Jul 2011 08:15:34 -0600
From:      Chad Perrin <perrin@apotheon.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: 2020: Will BSD and Linux be relevant anymore?
Message-ID:  <20110721141534.GC59455@guilt.hydra>
In-Reply-To: <CADGWnjXjtZwXPdFQJ8dFfZ_bG8hSp6LiJt4QvsSbS7umYG=EqQ@mail.gmail.com>
References:  <alpine.BSF.2.00.1107190736560.27391@gwdu60.gwdg.de> <CAGy-+i_phtNbTh7SHhockqTuGrv+d2ZLn0_6A9aKEySYO0MgTw@mail.gmail.com> <24466_1311199850_4E27526A_24466_7987_1_D9B37353831173459FDAA836D3B43499C521866E@WADPMBXV0.waddell.com> <4e28160e.bVryeJCK1esNt615%perryh@pluto.rain.com> <CADGWnjXjtZwXPdFQJ8dFfZ_bG8hSp6LiJt4QvsSbS7umYG=EqQ@mail.gmail.com>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help

--z4+8/lEcDcG5Ke9S
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Thu, Jul 21, 2011 at 10:52:28AM +0200, C. P. Ghost wrote:
>=20
> I'm not familiar with Windows, but I don't think a typical windows
> driver as written by a hardware vendor would manipulate the windows
> kernel internals (data structures) directly, right? If that's correct,
> we "merely" need to catch the ABI up- and down-calls from and to the
> windows driver, and translate them into regular FreeBSD syscalls (maybe
> augmented by a compat helper library?).
>=20
> Since this is exactly the approach taken by the Linuxulator, I fail to
> see why a similar method hasn't been tried for those windows kernel
> driver (binary blobs). Maybe some artificial restrictions like, say,
> patents are standing in the way? Or a technical restriction like such
> binary blobs being encrypted with a public key, and only usable from
> Windows kernel with their own secret key?

It may not be anything so exotic.  On a per-release basis, the MS Windows
ABIs and APIs change far more dramatically than the Linux kernel, and are
far less transparent to developers; they must in many cases be discovered
by experimentation, being closed source software.  Over a given period of
time, the changes to Linux may be greater in number and magnitude (I'm
not a kernel hacker, so I wouldn't know for sure), but they're spread out
over time rather than bundled in a major collection of changes with a new
marketing campaign.  This might make it much more difficult to target the
MS Windows ABIs and APIs.

I'm just speculating, though.  As I said, I'm not a kernel hacker.

--=20
Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]

--z4+8/lEcDcG5Ke9S
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (FreeBSD)

iEYEARECAAYFAk4oNIYACgkQ9mn/Pj01uKVhZgCfeAppv2/IcrwmVxpXIbfopMop
ghYAn2M/UaTy7sJAHh2VH0hTam9PAbPv
=h5TR
-----END PGP SIGNATURE-----

--z4+8/lEcDcG5Ke9S--



Want to link to this message? Use this URL: <http://docs.FreeBSD.org/cgi/mid.cgi?20110721141534.GC59455>