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Message-Id: <D3Z8S9922SIU.QD22EOW9RGT0@kernel.org>
Date: Fri, 06 Sep 2024 16:40:06 +0300
From: "Jarkko Sakkinen" <jarkko@...nel.org>
To: "Roberto Sassu" <roberto.sassu@...weicloud.com>, <corbet@....net>,
 <zohar@...ux.ibm.com>, <dmitry.kasatkin@...il.com>,
 <eric.snowberg@...cle.com>, <paul@...l-moore.com>, <jmorris@...ei.org>,
 <serge@...lyn.com>
Cc: <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
 <linux-integrity@...r.kernel.org>, <linux-security-module@...r.kernel.org>,
 <wufan@...ux.microsoft.com>, <pbrobinson@...il.com>, <zbyszek@...waw.pl>,
 <hch@....de>, <mjg59@...f.ucam.org>, <pmatilai@...hat.com>,
 <jannh@...gle.com>, <dhowells@...hat.com>, <jikos@...nel.org>,
 <mkoutny@...e.com>, <ppavlu@...e.com>, <petr.vorel@...il.com>,
 <mzerqung@...inter.de>, <kgold@...ux.ibm.com>, "Roberto Sassu"
 <roberto.sassu@...wei.com>
Subject: Re: [RFC][PATCH v3 01/10] ima: Introduce hook DIGEST_LIST_CHECK

On Fri Sep 6, 2024 at 2:22 PM EEST, Roberto Sassu wrote:
> On Fri, 2024-09-06 at 12:41 +0300, Jarkko Sakkinen wrote:
> > On Thu Sep 5, 2024 at 6:25 PM EEST, Roberto Sassu wrote:
> > > From: Roberto Sassu <roberto.sassu@...wei.com>
> > > 
> > > Introduce a new hook to check the integrity of digest lists.
> > 
> > "Introduce DIGEST_LIST_CHECK, a new hook..."
> > 
> > > 
> > > The new hook is invoked during a kernel read with file type
> > 
> > "with the file type"
> > 
> > 
> > > READING_DIGEST LIST, which is done by the Integrity Digest Cache when it is
> > > populating a digest cache with a digest list.
> > 
> > The patch creates a new struct imap_rule_entry instance when it parses
> > the corresponding rule, which means that there are couple slices of
> > information missing here:
> > 
> > 1. The commit message does not tell what the code change effectively
> >    is. I scavenged this information from [1].
>
> Sorry, to me it seems a bit redundant to state what a IMA hook is. The
> new hook will be handled by IMA like the other existing hooks.

I think with documentation (scoping also to commit messages) it is in
general a good strategy to put it less rather than more. No
documentation is better than polluted documentation ;-)

Just remarking what might not be obvious with someone who might not
be obvious, unless being a pro-active contributor.

BR, Jarkko

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