Re: [PATCH v4 0/5] nfsd + hfsplus: introduce generalized version of NFSv4 ACLs <-> POSIX ACLs mapping algorithms

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On May 9, 2013, at 9:01 PM, Myklebust, Trond wrote:

[snip]
> 
> How does this make sense? There is no lossless mapping of NFSv4 acls
> into POSIX acls; the latter doesn't have any equivalent of the DENY aces
> so you cannot represent the full set of acls that can be set using MacOS
> on the same filesystem.
> 
> Shouldn't you rather be looking at the richacl patch sets?
> 

Yes, I understand the nature of such mapping and impossibility of mapping NFSv4 ACLs to POSIX ACLs in some cases. But, as I understand, the richacl patch set is not mainline yet. And even if it will be in mainline then a user can have choice to use POSIX ACLs or richacls. So, we need to map NFSv4 ACLs <-> POSIX ACLs in hfsplus for the case of using POSIX ACLs model. I think that to have such mapping is better than to have nothing. Moreover, a user can use HFS+ filesystem with using POSIX ACLs only under Linux. Thereby, the generalization of mapping NFSv4 ACLs <-> POSIX ACLs makes sense, from my viewpoint.

With the best regards,
Vyacheslav Dubeyko.

> -- 
> Trond Myklebust
> Linux NFS client maintainer
> 
> NetApp
> Trond.Myklebust@xxxxxxxxxx
> www.netapp.com

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