Re: follow-up: discrepancy with POSIX

On Wed, 19 Sep 2007 10:46:54 -0700
Ulrich Drepper [off-list ref] wrote:

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Andi Kleen wrote:

quoted

quoted

But the spec calls for a "null address" to be used and that's in my
understanding something different from using AF_UNSPEC.

memset(&sockaddr, 0, sizeof(sockaddr)) should give you AF_UNSPEC

But the spec calls for <quote>null address for the protocol</quote>.

That means the family for the null address is the same as the family of
the socket.

Which is a valid address in some protocols. If I remember rightly then
appletalk net 0 node 0 port 0 is valid although I'd want to look in the
book to check that - ditto AF_ECONET although I doubt anyone cares too
much 8)

Alan