linux-kernel - Re: [PATCH v3 15/25] security: Introduce file_pre_free

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Message-ID: <8d7eff721935ed4c57952e31d3f77bbacafc2522.camel@linux.ibm.com>
Date:   Fri, 13 Oct 2023 09:50:07 -0400
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     Roberto Sassu <roberto.sassu@...weicloud.com>,
        viro@...iv.linux.org.uk, brauner@...nel.org,
        chuck.lever@...cle.com, jlayton@...nel.org, neilb@...e.de,
        kolga@...app.com, Dai.Ngo@...cle.com, tom@...pey.com,
        dmitry.kasatkin@...il.com, paul@...l-moore.com, jmorris@...ei.org,
        serge@...lyn.com, dhowells@...hat.com, jarkko@...nel.org,
        stephen.smalley.work@...il.com, eparis@...isplace.org,
        casey@...aufler-ca.com
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-nfs@...r.kernel.org, linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org, keyrings@...r.kernel.org,
        selinux@...r.kernel.org, Roberto Sassu <roberto.sassu@...wei.com>
Subject: Re: [PATCH v3 15/25] security: Introduce file_pre_free_security hook

On Mon, 2023-09-04 at 15:34 +0200, Roberto Sassu wrote:
[..]

> It is useful for IMA to calculate the digest of the file content, just
> before a file descriptor is closed, and update the security.ima xattr with
> the new value.

--> before the last file descriptor opened for write is closed

-- 
thanks,

Mimi