>> int socketfrom(int template, int domain, int type, int protocol);

> I dislike this approach becaues it is a new way to create a socket.

> Currently you create a socket with socket(), have the system allocate
> you a new one with accept() and...I think that is the limit.

Yes, this is a third way - and what's wrong with that?

> I would rather see something like:

> setsockopt(fd, SOL_SOCKET, SO_TEMPLATE,  &template, sizeof(template))

> The next question is then how to define the "template" data structure
> in such a way that it is extensible for arbitrary sockets.

My own suggestion would be to make it an opaque-to-userland blob
created by the kernel with something like getsockopt(SO_GET_TEMPLATE).

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