Re: Authoritative hooks updated to 2.4.13

From: Casey Schaufler (caseyat_private)
Date: Tue Oct 30 2001 - 13:57:04 PST

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    Stephen Smalley wrote:
    > 
    > On Tue, 30 Oct 2001, Stephen Smalley wrote:
    > 
    > > Do you actually have a POSIX ACL security module that uses LSM and does
    > > not require any other kernel patches?
    > 
    > Sorry, that wasn't clear.  That question should be:  Do you actually have
    > a POSIX ACL security module that uses LSM + the authoritative hooks patch
    > and does not require any other kernel patches?
    
    Hell, I doubt you could find a kernel that boots that doesn't
    require any patches!
    
    Seriously, we're talking about a set of works-in-progress:
    LSM, ACLs, Extended Attributes, XFS, and so on. We could make
    ACLs work under authoritative LSM without any other patches,
    but doing so might require some additional hooks. Of course,
    there's no incentive to do so under the current conditions.
    Plus, there's always the potential for things like the directory
    default ACL functionality that LSM might reasonably want to
    defer to Phase II.
    
    So, no, I wouldn't say there would be no other patches required.
    
    I would say that does not make a usable LSM worthless. Nor
    would I say that invalidates the arguement that LSM ought to
    support this. I would say that even with this, an LSM which
    does not provide useful service for a facility as important
    as POSIX ACLs is pretty pointless.
    
    
    -- 
    
    Casey Schaufler				Manager, Trust Technology, SGI
    caseyat_private				voice: 650.933.1634
    casey_pat_private			Pager: 888.220.0607
    
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