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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a35b4a8bc1sm103084855e9.4.2026.10.26.14.15.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Oct 2026 14:15:43 -0700 (PDT) Date: Mon, 26 Oct 2026 22:15:27 +0100 From: =?utf-8?Q?G=C3=BCnther?= Noack To: Kuniyuki Iwashima Cc: Alejandro Colomar , linux-man@vger.kernel.org Subject: Re: [PATCH 6/8] man/man7/unix.7: ERRORS: EPROTONOSUPPORT: Protocol 0 is also accepted Message-ID: <20261026.1854bd192793@gnoack.org> References: <20261021210800.27338-2-gnoack3000@gmail.com> <20261021210800.27338-8-gnoack3000@gmail.com> X-Mailing-List: linux-man@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Sat, Oct 24, 2026 at 05:47:09AM +0000, Kuniyuki Iwashima wrote: > On Wed, 21 Oct 2026 23:07:58 +0200, Günther Noack wrote: > > unix_create() in linux.git net/unix/af_unix.c starts with this check: > > > > if (protocol && protocol != PF_UNIX) > > return -EPROTONOSUPPORT; > > > > Therefore, not only AF_UNIX (a.k.a. PF_UNIX) is accepted as a protocol > > value in the unix(7) socket(2) invocation, but also 0. 0 is the usual > > value, and is also given as example in the SYNOPSIS at the top of > > unix(7). > > For the same reason with the previous patch, please drop this change. > > It's not worth documenting. Fair enough, dropped. –Günther