Re: [gentoo-releng] Re: baselayout changes for livecds

[Martin Schlemmer <azarah@gentoo.org>]

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On Sat, 2004-01-17 at 20:29, Paul de Vrieze wrote:
> On Saturday 17 January 2004 18:06, Brad House wrote:
> > no, the rcscripts must now parse the kernel commandline opts
> > to get a few options. There's really not many other ways to
> > do it.  Besides you just proved by your statement that someone
> > could instead pass   init=/bin/sh  and override any sort of
> > init process, so trying to make the 'cdroot' option secure
> > is obsurd, as there's 10 million other ways to get in if you
> > have direct access to the computer.
> 
> The big difference is that init=/bin/sh does not give you a normal working 
> system, cdboot however could be abused to get a normal functioning 
> passwordless console. That would allow incapable systemadmins to decide to do 
> this, or even tell others to do it (the latter I want to prevent).
> 

I _did_ say it already, but you apparently did not want to listen - the
kernel opts is not needed, as there is no need to be dynamic.  Its
either a livecd or not.  And as Paul did mention, it might be open for
exploit, although 'init=/bin/bash' will work as well.

The baselayout ebuild will be modified to do changes if USE=livecd, as
it is sane, and I imagine some other things will need special livecd
tweaking as well.  Meaning, if USE=livecd, pkg_postinst() will
'echo CDBOOT=1 >> ${ROOT}/etc/rc.conf', and do whatever else.


Thanks,

-- 

Martin Schlemmer
Gentoo Linux Developer, Desktop/System Team Developer
Cape Town, South Africa



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