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Re: [PATCH 01/11] Security: Add hook to get full maclabel xattr name

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To: Trond Myklebust <trond.myklebust@...>, <casey@...>
Cc: Christoph Hellwig <hch@...>, Dave Quigley <dpquigl@...>, Stephen Smalley <sds@...>, <viro@...>, <bfields@...>, <linux-kernel@...>, <linux-fsdevel@...>, LSM List <linux-security-module@...>
Date: Friday, February 29, 2008 - 1:26 pm

--- Trond Myklebust <trond.myklebust@fys.uio.no> wrote:


Ah, well, I don't understand why, but that's probably just
me being ignorant. It happens from time to time.


Ok, I can buy that it doesn't fit in with the current protocol
mindset, and that I for one have not demonstrated that it can
be. I remember how upset the IETF got over the original CIPSO
proposal not specifying which label tag value coresponded to
"Top Secret". 


But ... I don't have a job. You're being mean. (smiley)

I think that we have a conflict between what works well for
a filesystem (xattrs are really helpful) and what works well
for a network protocol (undefined blobs of goo are atrocious)
in the case of a network file system. From either standpoint
the other is completely unworkable.

It may be the case that for NFS the proposed scheme (delta
LSM naming propriety, which is getting addressed) is the
best we can do. NFS is an old protocol (older than some of
the people reading this) and should be excused some shortcomings.

Thank you.


Casey Schaufler
casey@schaufler-ca.com
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Messages in current thread:
RFC Labeled NFS Initial Code Review, David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: RFC Labeled NFS Initial Code Review, Dave Quigley, (Wed Feb 27, 9:23 pm)
Re: RFC Labeled NFS Initial Code Review, Dave Quigley, (Wed Feb 27, 8:48 pm)
[PATCH 06/11] SELinux: Add new labeling type native labels, David P. Quigley, (Wed Feb 27, 6:11 pm)
[PATCH 03/11] VFS: Add security label support to *notify, David P. Quigley, (Wed Feb 27, 6:11 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Christoph Hellwig, (Thu Feb 28, 7:54 pm)
Re: [PATCH 03/11] VFS: Add security label support to *notify, Christoph Hellwig, (Thu Feb 28, 8:23 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 7:48 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 8:39 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 9:00 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Casey Schaufler, (Fri Feb 29, 1:26 pm)
Re: [PATCH 01/11] Security: Add hook to get full maclabel xa..., Christoph Hellwig, (Thu Feb 28, 8:51 pm)
[PATCH 11/11] NFSD: Server implementation of MAC Labeling, David P. Quigley, (Wed Feb 27, 6:11 pm)
[PATCH 09/11] NFS: Client implementation of Labeled-NFS, David P. Quigley, (Wed Feb 27, 6:11 pm)
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