Re: [RFC PATCH 0/2] net: connect to UNIX sockets from specified root

On Fri, Aug 10, 2012 at 07:26:28PM +0100, Alan Cox wrote:

quoted

On that whole subject...

Do we need a Unix domain socket equivalent to openat()?

I don't think so. The name is just a file system indexing trick, it's not
really the socket proper. It's little more than "ascii string with
permissions attached"

That's overstating the case.  As I understand it the address is resolved
by a pathname lookup like any other--it can follow symlinks, is relative
to the current working directory and filesystem namespace, etc.  So a
unix-domain socket equivalent to openat() would at least be
well-defined--whether it's needed or not, I don't know.

--b.