linux-kernel - Re: [PATCH -V6 00/26] New ACL format for better NFSv4 acl interoperability

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Date:	Tue, 06 Sep 2011 10:41:06 +0100
From:	Steven Whitehouse <swhiteho@...hat.com>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	agruen@...nel.org, bfields@...ldses.org, akpm@...ux-foundation.org,
	dhowells@...hat.com, linux-fsdevel@...r.kernel.org,
	linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -V6 00/26]  New ACL format for better NFSv4 acl
 interoperability

Hi,

On Mon, 2011-09-05 at 22:55 +0530, Aneesh Kumar K.V wrote:
> Hi,
> 
> The following set of patches implements VFS and ext4 changes needed to implement
> a new acl model for linux. Rich ACLs are an implementation of NFSv4 ACLs,
> extended by file masks to fit into the standard POSIX file permission model.
> They are designed to work seamlessly locally as well as across the NFSv4 and
> CIFS/SMB2 network file system protocols.
> 
> A user-space utility for displaying and changing richacls is available at [4]
> (a number of examples can be found at http://acl.bestbits.at/richacl/examples.html).
> 
> [4] git://git.kernel.org/pub/scm/fs/acl/kvaneesh/richacl.git master
> 
> To test richacl on ext4 use -o richacl mount option. This mount option may later be
> dropped in favour of a feature flag.
> 
> More details regarding richacl can be found at
> http://acl.bestbits.at/richacl/
> 
> Changes from v5:
> a) rebase to v3.1-rc4-131-g9e79e3e
> 
> NOTE: The kernel changes will be pushed to
> git://git.kernel.org/pub/scm/linux/kernel/git/kvaneesh/linux-richacl.git richacl
> when kernel.org is back
> 
> -aneesh
> 

This looks like a really nice patch set. One question though is whether
there are any test suites which can be used to gain confidence in the
implementation? Obviously there is a fair amount of change here which
has security implications, so it would be good to have some test results
to go along with the patches,

Steve.


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