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Date:   Tue, 27 Sep 2022 09:59:10 +0200
From:   Christian Brauner <brauner@kernel.org>
To:     Christoph Hellwig <hch@lst.de>
Cc:     Casey Schaufler <casey@schaufler-ca.com>,
        linux-fsdevel@vger.kernel.org, Seth Forshee <sforshee@kernel.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        v9fs-developer@lists.sourceforge.net, linux-cifs@vger.kernel.org,
        linux-integrity@vger.kernel.org,
        linux-security-module@vger.kernel.org
Subject: Re: [PATCH v2 00/30] acl: add vfs posix acl api
Message-ID: <20220927075910.remwae5cz6w2dgob@wittgenstein>
References: <20220926140827.142806-1-brauner@kernel.org>
 <99173046-ab2e-14de-7252-50cac1f05d27@schaufler-ca.com>
 <20220927074101.GA17464@lst.de>
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On Tue, Sep 27, 2022 at 09:41:01AM +0200, Christoph Hellwig wrote:
> On Mon, Sep 26, 2022 at 05:22:45PM -0700, Casey Schaufler wrote:
> > I suggest that you might focus on the acl/evm interface rather than the entire
> > LSM interface. Unless there's a serious plan to make ima/evm into a proper LSM
> > I don't see how the breadth of this patch set is appropriate.
> 
> Umm. The problem is the historically the Linux xattr interface was
> intended for unstructured data, while some of it is very much structured
> and requires interpretation by the VFS and associated entities.  So
> splitting these out and add proper interface is absolutely the right
> thing to do and long overdue (also for other thing like capabilities).
> It might make things a little more verbose for LSM, but it fixes a very
> real problem.

Agreed.