Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20230809-net-netfilter-v2-0-5847d707ec0a@google.com>
 <20230809-net-netfilter-v2-1-5847d707ec0a@google.com> <20230809201926.GA3325@breakpoint.cc>
In-Reply-To: <20230809201926.GA3325@breakpoint.cc>
From:   Justin Stitt <justinstitt@google.com>
Date:   Wed, 9 Aug 2023 14:40:39 -0700
Message-ID: <CAFhGd8oNsGEAmSYs4H3ppm1t2DrD8Br5wwg+VuNtwfoOA_-64A@mail.gmail.com>
Subject: Re: [PATCH v2 1/7] netfilter: ipset: refactor deprecated strncpy
To:     Florian Westphal <fw@strlen.de>
Cc:     Pablo Neira Ayuso <pablo@netfilter.org>,
        Jozsef Kadlecsik <kadlec@netfilter.org>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        linux-hardening@vger.kernel.org, Kees Cook <keescook@chromium.org>,
        netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
        netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

On Wed, Aug 9, 2023 at 1:19=E2=80=AFPM Florian Westphal <fw@strlen.de> wrot=
e:
>
> Justin Stitt <justinstitt@google.com> wrote:
> > Use `strscpy_pad` instead of `strncpy`.
>
> I don't think that any of these need zero-padding.
It's a more consistent change with the rest of the series and I don't
believe it has much different behavior to `strncpy` (other than
NUL-termination) as that will continue to pad to `n` as well.

Do you think the `_pad` for 1/7, 6/7 and 7/7 should be changed back to
`strscpy` in a v3? I really am shooting in the dark as it is quite
hard to tell whether or not a buffer is expected to be NUL-padded or
not.