Date: Sat, 27 Jun 1998 18:04:14 +0200 (CEST) From: Andrzej Bialecki <abial@nask.pl> To: Dinesh Nair <dinesh@alphaque.com> Cc: Mike Smith <mike@smith.net.au>, freebsd-small@FreeBSD.ORG Subject: Re: Flashes and BIOS (was Re: I'm back.) Message-ID: <Pine.NEB.3.95.980627180050.22013C-100000@korin.warman.org.pl> In-Reply-To: <Pine.BSF.3.91.980627163019.253E-100000@broker>
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On Sat, 27 Jun 1998, Dinesh Nair wrote:
>
> On Fri, 26 Jun 1998, Andrzej Bialecki wrote:
>
> > I have to display my total ignorance here: I'm not sure what happens to
> > the interrupt vectors once FreeBSD is booted - are they stored somewhere?
> > are they changed at all? I kind of vaguely remember them being located
> > somewhere near the 0:0 right after the POST completes (in real mode, just
>
> i've written software - originally for win95 but works for any x86 OS
> using the partition model - which allows a user to encrypt and lock a
> harddrive. data and booting is disallowed unless a smartcard and the
> proper password is inserted.
>
> implemented this by dicking around with int13 hook on bootup to insert a
> hook into my routines so i could do on-the-fly encryption and decryption.
> i've got the assembler code still with me.
Yes, I know that much - what I wasn't sure about was what FreeBSD does to
the interrupt vector table on loading... (for curious: it leaves it
intact). Besides, once the kernel is running in protected mode, it's
nontrivial to call real-mode BIOS routines.
>
> > {dial,net,isp}/{devfs,nodevfs}
> >
> > but this starts to be messy... Perhaps I'll come up with a feature-level
> > configurator instead of defining separate types with their own
>
> it would, andrzej. suggest that i keep 2.2.6 non-devfs as it's not too
> stable on this strain anyway. otoh, based on jordan's postings, we're
> expecting the 2.2.x tree to be fully merged into the 3.0-RELEASE by end
> of this year. would need to consolidate both our versions then. its
> currently easy as the differences are not too great.
Ok, that's fine.
Andrzej Bialecki
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abial@nask.pl | if(halt_per_mth > 0) { fetch("http://www.freebsd.org") }
Research & Academic | "Be open-minded, but don't let your brains to fall out."
Network in Poland | All of the above (and more) is just my personal opinion.
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