Messages in this thread | | | Date | Sat, 31 May 2008 09:54:25 +0200 | From | Pavel Machek <> | Subject | Re: [RFC][Patch 5/5]integrity: IMA as an integrity service provider |
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On Wed 2008-05-28 01:22:42, Andrew Morton wrote: > On Fri, 23 May 2008 11:05:45 -0400 Mimi Zohar <zohar@linux.vnet.ibm.com> wrote: > > > This is a re-release of Integrity Measurement Architecture(IMA) as an > > independent Linunx Integrity Module(LIM) service provider, which implements > > the new LIM must_measure(), collect_measurement(), store_measurement(), and > > display_template() API calls. The store_measurement() call supports two > > types of data, IMA (i.e. file data) and generic template data. ... > Generally: the code is all moderately intrusive into the VFS and this > sort of thing does need careful explanation and justification, please. > Once we have some understanding of what you're trying to achieve here > we will inevitably ask "can't that be done in userspace". So it would > be best if your description were to preemptively answer all that.
...also, it would be nice to see explanation 'what is this good for'.
Closest explanation I remember was 'it will protect you by making system unbootable if someone stole disk with your /usr filesystem -- but not / filesystem -- added some rootkit, and then stealthily returned it'. That seems a) very unlikely scenario and b) probably better solved by encrypting /usr. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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