On Tue, Apr 19, 2005 at 06:27:38PM -0400, Daniel Jacobowitz wrote:

On Tue, Apr 19, 2005 at 03:00:04PM -0700, Linus Torvalds wrote:

quoted

On Tue, 19 Apr 2005, Greg KH wrote:

quoted

It looks like your domain name isn't set up properly for your box (which
is why it worked for you, but not me before, causing that patch).

No, I think it's a bug in your domainname changes. I don't think you
should do the domainname at all if the hostname has a dot in it.

Most machines I have access to (and that includes machines that are
professionally maintained, not just my own cruddy setup) says "(none)" to
domainname and have the full hostname in hostname.

And even the ones that use domainname tend to not have a fully qualified 
DNS domain there. You need to use dnsdomainname to get that, and I don't 
even know how to do it with standard libc.

So how about something like this?

(Somebody who actually knows how these things should be done - please feel 
free to pipe up).

The glibc documentation blows for this, but what getdomainname comes
from uname(2), not from any DNS-related configuration.  Debian only
ever sets this if you're using NIS.

Well, somehow Gentoo sets this up properly, and I'm not using NIS.  Hm,
my SuSE boxes on the other hand...

There's no real great way to get the current hostname; a lot of
applications do a reverse DNS lookup on the primary network interface,
with appropriate handwaving to define primary.

Easiest might be to punt to hostname --fqdn, or an equivalent to its
algorithm - which appears to be fetch the hostname from uname, do a DNS
lookup on that, and a reverse DNS lookup on the result.

Ick.  Let's stick with Linus's patch for now...

thanks,

greg k-h