linux-kernel - Re: [PATCH v15 0/4] overlayfs override

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Message-ID: <CAOQ4uxhoozGgxYmucFpFx8N=b4x9H3sfp60TNzf0dmU9eQi2UQ@mail.gmail.com>
Date:   Tue, 5 Nov 2019 09:56:04 +0200
From:   Amir Goldstein <amir73il@...il.com>
To:     Mark Salyzyn <salyzyn@...roid.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        kernel-team@...roid.com, Miklos Szeredi <miklos@...redi.hu>,
        Jonathan Corbet <corbet@....net>,
        Vivek Goyal <vgoyal@...hat.com>,
        "Eric W . Biederman" <ebiederm@...ssion.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        overlayfs <linux-unionfs@...r.kernel.org>,
        linux-doc@...r.kernel.org
Subject: Re: [PATCH v15 0/4] overlayfs override_creds=off & nested get xattr fix

On Mon, Nov 4, 2019 at 11:53 PM Mark Salyzyn <salyzyn@...roid.com> wrote:
>
> Patch series:
>
> Mark Salyzyn (4):
>   Add flags option to get xattr method paired to __vfs_getxattr

Sigh.. did not get to fsdevel (again...) I already told you several times
that you need to use a shorter CC list.

>   overlayfs: handle XATTR_NOSECURITY flag for get xattr method
>   overlayfs: internal getxattr operations without sepolicy checking
>   overlayfs: override_creds=off option bypass creator_cred

It would be better for review IMO if you rebase your series on top of
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git ovl-unpriv

1. internal getxattr patch would be a one liner change to ovl_own_getxattr()
2. The documentation of override_creds would be much more
meaningful if it used the overlay permission model terminology
that Miklos added in his patch set and extend it

Thanks,
Amir.