netdev - Re: [PATCH net-next] sockopt: Change getsockopt() of SO

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Message-ID: <m2wqy6jrne.fsf@firstfloor.org>
Date:	Wed, 31 Oct 2012 13:47:01 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	Brian Haley <brian.haley@...com>
Cc:	David Miller <davem@...emloft.net>,
	Pavel Emelyanov <xemul@...allels.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	"netdev\@vger.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name

Brian Haley <brian.haley@...com> writes:

> Instead of having the getsockopt() of SO_BINDTODEVICE return an index, which
> will then require another call like if_indextoname() to get the actual interface
> name, have it return the name directly.
>
> This also matches the existing man page description on socket(7) which mentions
> the argument being an interface name.
>
> If the value has not been set, zero is returned and optlen will be set to zero
> to indicate there is no interface name present.

That will break all existing programs using the return value, right?
Better to fix the manpage

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only
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