From: "J. Bruce Fields" <bfields@fieldses.org>
To: "Andreas Grünbacher" <andreas.gruenbacher@gmail.com>
Cc: Miklos Szeredi <miklos@szeredi.hu>,
Andreas Gruenbacher <agruenba@redhat.com>,
NeilBrown <neilb@suse.com>, Amir Goldstein <amir73il@gmail.com>,
Patrick Plagwitz <Patrick_Plagwitz@web.de>,
"linux-unionfs@vger.kernel.org" <linux-unionfs@vger.kernel.org>,
Linux NFS list <linux-nfs@vger.kernel.org>,
Linux FS-devel Mailing List <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] overlayfs: ignore empty NFSv4 ACLs in ext4 upperdir
Date: Thu, 2 May 2019 13:16:03 -0400 [thread overview]
Message-ID: <20190502171603.GA1778@fieldses.org> (raw)
In-Reply-To: <CAHpGcML0KuoGSyXyyDnXHkSp3nDnSjJPeZeWEmt8CXxQeojxwg@mail.gmail.com>
On Thu, May 02, 2019 at 05:08:14PM +0200, Andreas Grünbacher wrote:
> You'll still see permissions that differ from what the filesystem
> enforces, and copy-up would change that behavior.
That's always true, and this issue isn't really specific to NFSv4 ACLs
(or ACLs at all), it already exists with just mode bits. The client
doesn't know how principals may be mapped on the server, doesn't know
group membership, etc.
That's the usual model, anyway. Permissions are almost entirely the
server's responsibility, and we just provide a few attributes to set/get
those server-side permissions.
The overlayfs/NFS case is different, I think: the nfs filesystem may be
just a static read-only template for a filesystem that's only ever used
by clients, and for all I know maybe permissions should only be
interpreted on the client side in that case.
--b.
next prev parent reply other threads:[~2019-05-02 17:16 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <5a6862bd-924d-25e4-2a8e-ba4f51e66604@web.de>
2016-12-05 9:28 ` [PATCH] overlayfs: ignore empty NFSv4 ACLs in ext4 upperdir Miklos Szeredi
2016-12-05 15:19 ` J. Bruce Fields
2016-12-05 15:36 ` Miklos Szeredi
2016-12-05 16:25 ` J. Bruce Fields
2016-12-05 18:25 ` Patrick Plagwitz
2016-12-05 19:37 ` Andreas Grünbacher
2016-12-05 22:58 ` Patrick Plagwitz
2016-12-05 23:19 ` Andreas Grünbacher
2016-12-05 23:24 ` Andreas Grünbacher
2016-12-06 10:08 ` Miklos Szeredi
2016-12-06 13:18 ` Andreas Gruenbacher
2016-12-06 18:58 ` J. Bruce Fields
2019-05-02 2:02 ` NeilBrown
2019-05-02 2:54 ` Amir Goldstein
2019-05-02 3:57 ` NeilBrown
2019-05-02 14:04 ` Andreas Gruenbacher
2019-05-02 14:28 ` Miklos Szeredi
2019-05-02 15:08 ` Andreas Grünbacher
2019-05-02 17:16 ` J. Bruce Fields [this message]
2019-05-02 17:53 ` Andreas Gruenbacher
2019-05-02 23:04 ` NeilBrown
2019-05-02 23:24 ` NeilBrown
2019-05-03 6:54 ` Andreas Grünbacher
2019-05-02 17:26 ` Goetz, Patrick G
2019-05-02 17:44 ` Andreas Gruenbacher
2019-05-02 17:51 ` Goetz, Patrick G
2019-05-03 15:27 ` J. Bruce Fields
2019-05-03 17:39 ` Goetz, Patrick G
2019-05-02 4:35 ` [PATCH] OVL: add honoracl=off mount option NeilBrown
2019-05-02 5:08 ` Randy Dunlap
2019-05-02 11:46 ` Amir Goldstein
2019-05-02 23:19 ` NeilBrown
2019-05-02 13:47 ` J. R. Okajima
2019-05-03 15:35 ` [PATCH] overlayfs: ignore empty NFSv4 ACLs in ext4 upperdir J. Bruce Fields
2019-05-03 17:26 ` Amir Goldstein
2019-05-03 17:31 ` J. Bruce Fields
2019-05-03 17:41 ` Amir Goldstein
2019-05-03 17:51 ` Vivek Goyal
2019-05-07 0:24 ` NeilBrown
2019-05-10 20:09 ` J. Bruce Fields
2019-09-18 9:07 ` Miklos Szeredi
2019-09-18 19:49 ` J. Bruce Fields
2019-05-07 8:07 ` Miklos Szeredi
2019-05-07 23:51 ` J. Bruce Fields
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