linux-kernel - Re: [PATCH] cpuidle: dt: refactor deprecated strncpy

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Message-Id: <169601312172.3009670.14336910026222113184.b4-ty@chromium.org>
Date:   Fri, 29 Sep 2023 11:45:22 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Justin Stitt <justinstitt@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH] cpuidle: dt: refactor deprecated strncpy

On Wed, 13 Sep 2023 00:23:19 +0000, Justin Stitt wrote:
> `strncpy` is deprecated for use on NUL-terminated destination strings [1].
> 
> We should prefer more robust and less ambiguous string interfaces.
> 
> A suitable replacement is `strscpy` [2] due to the fact that it guarantees
> NUL-termination on the destination buffer. With this, we can also drop
> the now unnecessary `CPUIDLE_(NAME|DESC)_LEN - 1` pieces.
> 
> [...]

Applied to for-next/hardening, thanks!

[1/1] cpuidle: dt: refactor deprecated strncpy
      https://git.kernel.org/kees/c/fd94c38f8441

Take care,

-- 
Kees Cook