Re: [PATCH] net: phy: tja11xx: replace deprecated strncpy with ethtool_sprintf

From: Kees Cook
Date: Sat Oct 14 2023 - 22:37:00 EST


On Sat, Oct 14, 2023 at 03:55:41AM +0200, Andrew Lunn wrote:
> > I've been told that this whole ethtool API area is considered
> > deprecated. If that holds, then I don't think it's worth adding new
> > helpers to support it when ethtool_sprintf() is sufficient.
>
> I think deprecated is too strong. The current API is not great, so
> maybe with time a new API will emerge. But given there are around 160
> users of the API, probably over 100 drivers, it will be 20 years or
> more before all that hardware becomes obsolete and the drivers are
> removed.
>
> > Once you're done with the strncpy->ethtool_sprintf conversions I think
> > it would be nice to have a single patch that fixes all of these
> > "%s"-less instances to use "%s". (Doing per-driver fixes for that case
> > seems just overly painful.)
>
> I guess it is the same amount of effort to replace them with
> ethtool_puts()?

Yup, right. If adding ethtool_puts() makes sense, then I totally agree.

--
Kees Cook