netdev - Re: IP_MULTICAST_IF getsockopt man part

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Message-ID: <20120509093428.GB1696@minipsycho.brq.redhat.com>
Date:	Wed, 9 May 2012 11:34:28 +0200
From:	Jiri Pirko <jpirko@...hat.com>
To:	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>
Cc:	linux-man@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: IP_MULTICAST_IF getsockopt man part

Sat, May 05, 2012 at 01:57:35PM CEST, mtk.manpages@...il.com wrote:
>On Fri, May 4, 2012 at 9:00 PM, Jiri Pirko <jpirko@...hat.com> wrote:
>> Hi.
>>
>> <quote>
>> IP_MULTICAST_IF (since Linux 1.2)
>>                      Set the local device for a multicast socket.
>>                      Argument is an ip_mreqn or ip_mreq structure
>>                      similar to IP_ADD_MEMBERSHIP.
>> </quote>
>>
>> That is not true. Setsockopt recognizes only ip_mreqn and in_addr. I
>> made patch which makes it recognize ip_mreq as well. So that would be
>> probably ok.
>> http://patchwork.ozlabs.org/patch/156815/
>>
>> On the other hand, getsockopt works only with in_addr. That I think is
>> good behaviour but manpages here needs to be corrected in this way (read
>> part needs to be added here)
>
>Jirka,
>
>I'm having trouble to understand what you mean. Perhaps it would be
>simplest if you showed your proposed replacement text for the text
>quoted above.

<orig>
IP_MULTICAST_IF (since Linux 1.2)
Set the local device for a multicast socket. Argument is an ip_mreqn
or ip_mreq structure similar to IP_ADD_MEMBERSHIP.
</orig>
<new>
IP_MULTICAST_IF (since Linux 1.2)
Set or read the local device for a multicast socket.
Argument for set is an ip_mreqn or ip_mreq or addr_in structure.
Argument for read is an addr_in structure.
</new>


Jirka



>
>Thanks,
>
>Michael
>
>
>
>-- 
>Michael Kerrisk
>Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
>Author of "The Linux Programming Interface"; http://man7.org/tlpi/
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