Re: using selinux to control user access to files

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On Tue, 10 May 2005 09:55:32 CDT, alex@xxxxxxxxxxxxxxx said:

> > Best solution for me would be that rbac on userbase could be made available
> > in targeted policy.
> 
> I'm an total SELinux newbie (intend to improve on that), but yes, this 
> would be
> nice to have feature if possible.  In my work environmnt, we work with some
> sensitive data, and we must have audit trail whenever some types of files are
> touched (or we would fail external audits, which translates to lost jobs,
> simple as that).

Well, unfortunately, this is a "fish or cut bait" scenario.  Targeted looks
the way it does because all "normal userspace" gets dumped into one unconfined_t.

If you want per-(user/role/etc) separation, you really have to go to some
variant on "strict" - a *huge* part of the size of "strict" is dealing with all
those annoying interactions between domains.  If you want a user1_t and a
user2_t, you almost have to support splitting tmp_t into a user1_tmp_t and a
user2_tmp_t so user2 can't get into user1 via a tmp_t file.

I suspect what you really want here is not "targeted" but "strict with a lot
of the booleans set to loosen the policy somewhat".....

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