[Samba] Share 'IPC$' has wide links and unix extensions enabled

Thomas Schulz schulz at adi.com
Fri Sep 30 16:14:44 UTC 2016

> On Fri, 30 Sep 2016 10:14:32 -0400 (EDT)
> Thomas Schulz via samba <samba at lists.samba.org> wrote:
> > We are running Samba 4.4.6 as a file server.
> > In the logs for a few client machines I see entries such as:
> > 
> > [2016/09/29 22:36:58.862575,  0]
> >     ../source3/param/loadparm.c:4402(widelinks_warning)
> >   Share 'IPC$' has wide links and unix extensions enabled. These
> >   parameters are incompatible. Wide links will be disabled for this
> > share.
> > 
> > I assume that Share 'IPC$' is some sort of automatically created share
> > as we define no such share. We do have wide links enabled globally but
> > we do not have unix extensions enabled anywhere. I assume that this
> > message is harmless, but I am wondering where it comes from.
> > 
> > Tom Schulz
> > Applied Dynamics Intl.
> > schulz at adi.com
> > 
> It is set automatically, try reading 'man smb.conf'
> Rowland

We have the following in our smb.conf file in the global section:

unix extensions = no
wide links = yes

Interesting that testparam does not show the setting for wide links and
I did not remember that we had that setting in smb.conf until I went to
edit smb.conf to add it.

Reading the smb.conf man page, I don't see anything about a share IPC$
or anything to show why unix extensions would be automatically enabled
for any share when 'unix extensions = no' is set globally in smb.conf.
No other share generates any widelinks_warning messages, so I think that
the setting 'unix extensions = no' is working in general.

Tom Schulz
Applied Dynamics Intl.
schulz at adi.com

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