netdev - Re: [PATCH net-next] tools: ynl: check for overflow of constructed messages

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Message-ID: <m2jzmfh78v.fsf@gmail.com>
Date: Wed, 06 Mar 2024 12:31:12 +0000
From: Donald Hunter <donald.hunter@...il.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net,  netdev@...r.kernel.org,  edumazet@...gle.com,
  pabeni@...hat.com,  nicolas.dichtel@...nd.com,  jiri@...nulli.us
Subject: Re: [PATCH net-next] tools: ynl: check for overflow of constructed
 messages

Jakub Kicinski <kuba@...nel.org> writes:

> Donald points out that we don't check for overflows.
> Stash the length of the message on nlmsg_pid (nlmsg_seq would
> do as well). This allows the attribute helpers to remain
> self-contained (no extra arguments). Also let the put
> helpers continue to return nothing. The error is checked
> only in (newly introduced) ynl_msg_end().
>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>

Reviewed-by: Donald Hunter <donald.hunter@...il.com>