xfs
[Top] [All Lists]

Re: [PATCH v11 21/48] ext4: Add richacl feature flag

To: Austin S Hemmelgarn <ahferroin7@xxxxxxxxx>
Subject: Re: [PATCH v11 21/48] ext4: Add richacl feature flag
From: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
Date: Mon, 19 Oct 2015 17:34:54 +0200
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, "Theodore Ts'o" <tytso@xxxxxxx>, Andreas Dilger <adilger.kernel@xxxxxxxxx>, "J. Bruce Fields" <bfields@xxxxxxxxxxxx>, Jeff Layton <jlayton@xxxxxxxxxxxxxxx>, Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>, Anna Schumaker <anna.schumaker@xxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, linux-ext4 <linux-ext4@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, LKML <linux-kernel@xxxxxxxxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>, Linux NFS Mailing List <linux-nfs@xxxxxxxxxxxxxxx>, linux-cifs@xxxxxxxxxxxxxxx, Linux API <linux-api@xxxxxxxxxxxxxxx>, "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <5624ED40.7040206@xxxxxxxxx>
References: <1445008706-15115-1-git-send-email-agruenba@xxxxxxxxxx> <1445008706-15115-22-git-send-email-agruenba@xxxxxxxxxx> <5621346E.5000500@xxxxxxxxx> <CAHc6FU7sR2zN-K3un74wCv+1NPnrqJ=LYiWo+YQ_2X0kopyoTQ@xxxxxxxxxxxxxx> <5624ED40.7040206@xxxxxxxxx>
On Mon, Oct 19, 2015 at 3:16 PM, Austin S Hemmelgarn
<ahferroin7@xxxxxxxxx> wrote:
> On 2015-10-16 13:41, Andreas Gruenbacher wrote:
>>
>> On Fri, Oct 16, 2015 at 7:31 PM, Austin S Hemmelgarn
>> <ahferroin7@xxxxxxxxx> wrote:
>>>
>>> I would like to re-iterate, on both XFS and ext4, I _really_ think this
>>> should be a ro_compat flag, and not an incompat one.  If a person has the
>>> ability to mount the FS (even if it's a read-only mount), then they by
>>> definition have read access to the file or partition that the filesystem
>>> is contained in, which means that any ACL's stored on the filesystem are
>>> functionally irrelevant,
>>
>> It is unfortunately not safe to make such a file system accessible to
>> other users, so the feature is not strictly read-only compatible.
>>
> OK, seeing as I wasn't particularly clear as to why I object to this in my
> other e-mail, let's try this again.
>
> Can you please explain exactly why it isn't safe to make such a filesystem
> accessible to other users?

See here: http://www.spinics.net/lists/linux-ext4/msg49541.html

Andreas

<Prev in Thread] Current Thread [Next in Thread>