From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org
X-Spam-Level: 
X-Spam-Status: No, score=-3.1 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED,
	FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,RCVD_IN_MSPIKE_H3,
	RCVD_IN_MSPIKE_WL autolearn=ham autolearn_force=no version=3.4.4
Received: (qmail 31577 invoked from network); 6 Nov 2020 19:31:05 -0000
Received: from mother.openwall.net (195.42.179.200)
  by inbox.vuxu.org with ESMTPUTF8; 6 Nov 2020 19:31:05 -0000
Received: (qmail 15848 invoked by uid 550); 6 Nov 2020 19:31:03 -0000
Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm
Precedence: bulk
List-Post: <mailto:musl@lists.openwall.com>
List-Help: <mailto:musl-help@lists.openwall.com>
List-Unsubscribe: <mailto:musl-unsubscribe@lists.openwall.com>
List-Subscribe: <mailto:musl-subscribe@lists.openwall.com>
List-ID: <musl.lists.openwall.com>
Reply-To: musl@lists.openwall.com
Received: (qmail 15815 invoked from network); 6 Nov 2020 19:31:02 -0000
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net;
	s=badeba3b8450; t=1604691051;
	bh=8kq/VsACc2oHb17bYgAvM0ByevWUFhyE7zOkaWZJr9I=;
	h=X-UI-Sender-Class:Date:From:To:Subject;
	b=cCGvNu7xZh6nnmn8mO861B8ecKuM2SE3JQzdc8DW/lNK7zBFNgg4jSWTOvawH9NgN
	 KJf2qEB16aqHkbnjAtg2/A0s4HCcSt1ODO577Is6bIe2seh+gpgOofTi9+qQODkHPi
	 dg9nYvpXoPvLU2xloNrIC8OYewcpum9pmMAPRKxE=
X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c
Date: Fri, 6 Nov 2020 20:30:50 +0100
From: Markus Wichmann <nullplan@gmx.net>
To: musl@lists.openwall.com
Message-ID: <20201106193050.GB2009@voyager>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.9.4 (2018-02-28)
X-Provags-ID: V03:K1:UmovJz99l/npjqpn97TJjI1rmbEuXYV25MZt5N6BRWVIcvBdDF2
 riOSAtOywoOs8KkJyV4pchGjG8WANxANybuNinIwF+TDuyS3rgRTeRZERQmqE1grFwncWq1
 /EGgLu3mq7FsXFFW8FLj1/P4chof+l5ZgEk6O+PaWwijHpNQ+69vZ0x8kEnMMJ4fT/WB91U
 Sq5cnerxOvBTGZyDtjTDw==
X-UI-Out-Filterresults: notjunk:1;V03:K0:s8jGSDyoRvc=:lFNgt5Z0oGx4PxsP1esNi5
 G6yK/NaD3orNzZcQGeWUz+omOjdhGwdifJX3bdxWcl4ArtX8dF+arHh6QY9oXreNoMDLQAfih
 mgDh6UfpfPz/GgsYITynaxKPuGDCyk7B4jvrUnX2JhNNcDi5S60fe5DgYxqsMwTszcqz8XNZR
 G1i4ovtjWrK9kf41MkmKOyBRsIMWmkDpJsnieKvQQWUhWuL039G3F96pKFLPUBYhT2KzEo08C
 QS3vHayTvFV6ebBistrWEvXvoRzGmzNH/Ex+C9v4H1I8TKFQW19ms1jt2Jtf1hdkkE0uVV7A5
 jHNpEIGcRFcS0n5eqangg2DPkG9vW0zY77z2XI1MulNR9x/TshUl/yUvpE1llS9QbCNIb+JMT
 nz6be4AObBWFpPiGKeMSCr/H+tF6pbYCYEpeJjnKxC7DMbZfD0nEM5Ug+tVFYB24ja83su51s
 +bokWidj60THst8uCqA/yF1ZAUY4jhXel9o5j7knHXXu7z+OGstdDpL2KrH0Nk5FgGi3z+J52
 NgpwpjzLoRfS+zP5rVeozEoT7kIEzjJEtnvmUFAVO+sxMkFWkHVnV4FtAKttsNf5JPRaCakO0
 XHWs18HHoUe7Hx3N2WGqidumdgznEEZ76upD7712wqXplTvRLMyurTBzFKWdZO6YGMmEJywGj
 uTes5rknh/O9ZTsOTBp7o3DqsthwagJTiJ3EVM9HwOSXvkpl9VkZ+Pp9JhaWUxUsmRSkxXXue
 BTacX4PQ1Ptakq1Gg/JcQdik7J+TbbOmJo8DLcZG1qQ72R+TZe4SATZMXzAbWvar6cBArT3HT
 WBpf/ahYXvz2zymG//MYyZBnyn4Y6G3KMNIlNySPlF3DpZGWgi+lqMWJVu6Mru2dKzbjBPE4O
 x+V8BWubclGI8dQ3L76A==
Subject: [musl] Why connect() in syslog?

Hi all,

I was reading musl's syslog source code today for unrelated reasons, and
saw that it is using connect() to set the destination. And it has some
code to deal with connection failures. But why? I see the syslog socket
is a datagram socket, so I thought sendto() with destination address
means the same thing as connect() and send(), with the difference that
it is one less syscall that can fail and no connection errors to handle.
I tried finding information about the semantics of connect() on a UNIX
datagram socket, but failed to find anything useful.

Ciao,
Markus