On Mon, 8 Apr 2013 21:40:49 +0200 Marc Haber <mh+linux-cifs@xxxxxxxxxxxx> wrote: > Hi, > > I own a Canon MX 420 scanner which can scan to a memory card and then > offer the scanned information via CIFS. Up to a few kernel versions > ago (I think it worked with 3.6, but am not sure about that), things > worked just fine and then stopped. > > The issue is the following: > > $ sudo mount.cifs '\\mx420-sch8.local\canon_memory' /media/scanner -o user=anonymous,nounix --verbose > Password: <enter> > mount.cifs kernel mount options: ip=192.168.218.36,unc=\\mx420-sch8.local\canon_memory,nounix,user=anonymous,pass=******** > mount error(5): Input/output error > Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) > > A pcap file of the network traffic caused by this command can be > downloaded from http://q.bofh.de/~mh/stuff/tcpdump.mount.cifs. > > Otoh, smbclient '\\mx420-sch8.local\canon_memory' works. A pcap file > of the network traffic caused by this command can be downloaded from > http://q.bofh.de/~mh/stuff/tcpdump.smbclient. > > As somebody not knowing CIFS too well, I note that smbclients tries as > anonymous, while the kernel tries to log in first and receives an > error answer from the scanner. > > This behavior has changed at some point of the last six months. The > kernel 3.7 found in grml's 2013.02 release works, at least the 3.8.5 > currently running on my notebook doesn't. > > Any hints how do address this issue? > > Greetings > Marc > (cc'ing Steve) Looks like more fallout from commit 81bcd8b795229c. Steve, weren't you working on a patch to fix the client to handle the situation where the server replies to the NEGOTIATE with the extended security bit clear? In any case, a workaround for now might be to try and mount with sec=none. I *think* that will make the client do what smbclient is doing here. -- Jeff Layton <jlayton@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
