linux-kernel - Re: [PATCH v2] hwmon: (ibmpowernv) refactor deprecated strncpy

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Message-Id: <169601374243.3010937.14194696181874272859.b4-ty@chromium.org>
Date:   Fri, 29 Sep 2023 11:55:45 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Michael Ellerman <mpe@...erman.id.au>,
        Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Justin Stitt <justinstitt@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>, linux-hwmon@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH v2] hwmon: (ibmpowernv) refactor deprecated strncpy

On Tue, 19 Sep 2023 05:22:51 +0000, Justin Stitt wrote:
> `strncpy` is deprecated for use on NUL-terminated destination strings [1].
> 
> A suitable replacement is `memcpy` as we've already precisely calculated
> the number of bytes to copy while `buf` has been explicitly
> zero-initialized:
> | 	char buf[8] = { 0 };
> 
> [...]

Applied to for-next/hardening, thanks! (I've updated the Subject here
and with the older "refactor" subjects...)

Take care,

-- 
Kees Cook