linux-kernel - Re: [PATCH] net: phy: tja11xx: replace deprecated strncpy with ethtool

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Message-ID: <15af4bc4-2066-44bc-8d2e-839ff3945663@lunn.ch>
Date:   Fri, 13 Oct 2023 14:22:52 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Justin Stitt <justinstitt@...gle.com>
Cc:     Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] net: phy: tja11xx: replace deprecated strncpy with
 ethtool_sprintf

> -	for (i = 0; i < ARRAY_SIZE(tja11xx_hw_stats); i++) {
> -		strncpy(data + i * ETH_GSTRING_LEN,
> -			tja11xx_hw_stats[i].string, ETH_GSTRING_LEN);
> -	}
> +	for (i = 0; i < ARRAY_SIZE(tja11xx_hw_stats); i++)
> +		ethtool_sprintf(&data, "%s", tja11xx_hw_stats[i].string);
>  }

I assume you are using "%s" because tja11xx_hw_stats[i].string cannot
be trusted as a format string? Is this indicating we need an
ethtool_puts() ?

	Andrew