Messages in this thread | | | From | Andreas Gruenbacher <> | Subject | Re: [PATCH] Extended attribute fixes, etc. | Date | Sat, 15 Feb 2003 18:59:11 +0100 |
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On Saturday 15 February 2003 12:07, Christoph Hellwig wrote: > On Tue, Feb 11, 2003 at 08:18:58PM +0100, Andreas Gruenbacher wrote: > > The third to fifth are all steps towards trusted extended > > attributes, which are useful for privileged processes (mostly > > daemons). One use for this is Hierarchical Storage Management, in > > which a user space daemon stores online/offline information for > > files in trusted EA's, and the kernel communicates requests to > > bring files online to that daemon. This class of EA's will also > > find its way into XFS and ReiserFS, and expectedly also into JFS in > > this form. (Trusted EAs are included in the 2.4.19/2.4.20 patches > > as well.) > > Please don't do the ugly flags stuff. We have fsuids and fsgids for > exactly that reason (and because we're still lacking a credentials > cache..).
The XATTR_KERNEL_CONTEXT flag cannot be substituted by a uid/gid change; it is unrelated to that; that's the whole point of it. It would be possible to raise some other flag (such as a capability, etc.) instead of passing an explicit flag, but that seems uglier and more problematic/error prone to me.
-- Andreas.
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