Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 28 Dec 2022 10:24:58 -0500
From:   Shawn Webb <shawn.webb@hardenedbsd.org>
To:     oss-security@lists.openwall.com
Cc:     Alejandro Colomar <alx.manpages@gmail.com>,
        Michael Kerrisk <mtk.manpages@gmail.com>,
        linux-kernel@vger.kernel.org, linux-man@vger.kernel.org
Subject: Re: [oss-security] [patch] proc.5: tell how to parse /proc/*/stat
 correctly
Message-ID: <20221228152458.6xyksrxunukjrtzx@mutt-hbsd>
References: <Y6SJDbKBk471KE4k@p183>
 <Y6TUJcr/IHrsTE0W@codewreck.org>
 <1a1963aa1036ba07@orthanc.ca>
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha256;
        protocol="application/pgp-signature"; boundary="tq67mwsdswvrgjh4"
Content-Disposition: inline
In-Reply-To: <1a1963aa1036ba07@orthanc.ca>
Precedence: bulk


--tq67mwsdswvrgjh4
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

On Tue, Dec 27, 2022 at 04:44:49PM -0800, Lyndon Nerenberg (VE7TFX/VE6BBM) =
wrote:
> Dominique Martinet writes:
>=20
> > But, really, I just don't see how this can practically be said to be pa=
rsable...
>=20
> In its current form it never will be.  The solution is to place
> this variable-length field last.  Then you can "cut -d ' ' -f 51-"
> to get the command+args part (assuming I counted all those fields
> correctly ...)
>=20
> Of course, this breaks backwards compatability.

It would also break forwards compatibility in the case new fields
needed to be added.

The only solution would be a libxo-style feature wherein a
machine-parseable format is exposed by virtue of a file extension.

Examples:

1. /proc/pid/stats.json
2. /proc/pid/stats.xml
3. /proc/pid/stats.yaml_shouldnt_be_a_thing

Thanks,

--=20
Shawn Webb
Cofounder / Security Engineer
HardenedBSD

https://git.hardenedbsd.org/hardenedbsd/pubkeys/-/raw/master/Shawn_Webb/03A=
4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc

--tq67mwsdswvrgjh4
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----
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=YDgV
-----END PGP SIGNATURE-----

--tq67mwsdswvrgjh4--