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Date:      Fri, 30 Jul 1999 13:11:25 -0600
From:      Warner Losh <imp@village.org>
To:        Mike Smith <mike@smith.net.au>
Cc:        Mike Smith <msmith@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/usr.sbin/apm apm.c 
Message-ID:  <199907301911.NAA83225@harmony.village.org>
In-Reply-To: Your message of "Fri, 30 Jul 1999 11:43:41 PDT." <199907301843.LAA00424@dingo.cdrom.com> 
References:  <199907301843.LAA00424@dingo.cdrom.com>  

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In message <199907301843.LAA00424@dingo.cdrom.com> Mike Smith writes:
: I'm not entirely sure yet about the ramifications of user-space code
: being able to call the BIOS; there are security and locking implications
: that I want to consider, and a good case for a more generalised 
: interface.

What are the security implications?  Only root or group operator, by
default, can do this.  Your point about the locking mechanism is well
taken.  Nothing else is doing any locking, so the same problem exists
with the information interface.

I'm not sure why you say that it can't work.  It is just using the
same mechansim that the the get information stuff is using...  Data
structures in memory aren't supported accross this interface...

: APM should also become a module (real soon now), which will take the 
: pressure off on any "vendor specific" features as well; so far we don't 
: actually support anything "vendor specific" anyway, so it's a bit of a 
: furphy right now.

Right now there are a couple of information producing programs that
use this interface.

Warner


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