From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH 2/5] AF_UNIX: enable/disable multicast with
 getsockopt/setsockopt
Date: Fri, 24 Sep 2010 19:46:28 +0200
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References: <20100924182257.11abd9a6@chocolatine.cbg.collabora.co.uk>
	 <1285349116-17529-2-git-send-email-alban.crequy@collabora.co.uk>
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Cc: "David S. Miller" <davem@davemloft.net>,
	Stephen Hemminger <shemminger@vyatta.com>,
	Cyrill Gorcunov <gorcunov@openvz.org>,
	Alexey Dobriyan <adobriyan@gmail.com>,
	Lennart Poettering <lennart@poettering.net>,
	Kay Sievers <kay.sievers@vrfy.org>,
	Ian Molton <ian.molton@collabora.co.uk>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	dbus@freedesktop.org
To: Alban Crequy <alban.crequy@collabora.co.uk>
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Le vendredi 24 septembre 2010 =C3=A0 18:25 +0100, Alban Crequy a =C3=A9=
crit :
> Multicast can be enabled or disabled after a socket is allocated but =
this
> cannot be changed once the socket is bound or connected.
>=20
> Userspace applications can enable multicast on an Unix stream socket:
>   sockfd =3D socket(AF_UNIX, SOCK_STREAM, 0);
>   #define UNIX_MULTICAST 1
>   val =3D 1;
>   len =3D sizeof(val);
>   ret =3D setsockopt(sockfd, 0, UNIX_MULTICAST, &val, len);
>=20
> Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk>


> +		if (val !=3D 0) {
> +			u->multicast =3D 1;
> +		} else {
> +			u->multicast =3D 0;
> +		}

u->multicast =3D !!val;