Re: [PATCH v2] soc: qcom: cmd-db: replace deprecated strncpy with strtomem

[Kees Cook]

On Mon, Mar 18, 2024 at 10:49:23PM +0000, Justin Stitt wrote:
> strncpy() is deprecated for use on NUL-terminated destination strings
> [1] and as such we should prefer more robust and less ambiguous string
> interfaces.
> 
> @query is already marked as __nonstring and doesn't need to be
> NUL-terminated. Since @id is a string, we can use the self-describing
> string API strtomem().
> 
> Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1]
> Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2]
> Link: https://github.com/KSPP/linux/issues/90
> Cc: linux-hardening@xxxxxxxxxxxxxxx
> Signed-off-by: Justin Stitt <justinstitt@xxxxxxxxxx>

Nice! A textbook use for strtomem(). :)

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

-- 
Kees Cook