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[87.106.108.193]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48dfd503a0dsm18415710f8f.47.2026.10.18.10.37.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Oct 2026 10:37:26 -0700 (PDT) From: =?UTF-8?q?G=C3=BCnther=20Noack?= To: Alejandro Colomar Cc: linux-man@vger.kernel.org, =?UTF-8?q?G=C3=BCnther=20Noack?= Subject: [PATCH v2 06/24] man/man7/unix.7: ERRORS: EPROTONOSUPPORT: Protocol 0 is also accepted Date: Sun, 18 Oct 2026 19:36:54 +0200 Message-ID: <20261018173712.27670-7-gnoack3000@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261018173712.27670-1-gnoack3000@gmail.com> References: <20261018173712.27670-1-gnoack3000@gmail.com> Precedence: bulk X-Mailing-List: linux-man@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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). Fixes: 9d1fd1157306 (1999-06-15, 2022-12-19; "man-pages 1.24") Assisted-by: LLM Signed-off-by: Günther Noack --- Notes: I double checked it in the code. man/man7/unix.7 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/man/man7/unix.7 b/man/man7/unix.7 index 1054d7f52a30..9df4d3b6f635 100644 --- a/man/man7/unix.7 +++ b/man/man7/unix.7 @@ -708,7 +708,7 @@ or .BR sendmsg (2). .TP .B EPROTONOSUPPORT -Passed protocol is not +Passed protocol is neither 0 nor .BR AF_UNIX . .TP .B EPROTOTYPE -- 2.56.0