netdev - Re: [PATCH 1/1] Fix getsockname (ipv4/ipv6)

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Message-ID: <20090126223733.GB1922@Chamillionaire.breakpoint.cc>
Date:	Mon, 26 Jan 2009 23:37:33 +0100
From:	Florian Westphal <fw@...len.de>
To:	John Reumann <reumann.linux@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/1] Fix getsockname (ipv4/ipv6)

John Reumann <reumann.linux@...il.com> wrote:
> This change will return ENOSPC if the return address provided by the caller of getsockname
>  is not sufficiently large to hold the return value.

Those interfaces allow applications to query how large the sockaddr storage needs to
be by checking *addrlen after a successful call.

> This is consistent with the rest of the
>  API. However, there are some implemenations that copy only as many bytes of sockaddr from the
>  kernel to user-space as specified in the *addrlen attribute.  (1) This wasn't the behavior now

It is, and it has been for ages.
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