Public bug reported:

Binary package hint: cifs-utils

Please tell me if this is the wrong channel.  I have put this in the
ubuntu forum with no reply here:

http://ubuntuforums.org/showthread.php?t=1623107

>From the thread:

mount.cifs used to be able to work with kerberos tickets so long as I
changed the binary to suid root. I understand why this may have fallen
out of favour but since Meerkat, I am unable to get mount.cifs to mount
using kerberos and sudo.

# Non sudo mount.cifs with/without suid root
$ mount.cifs //server/share/directory ~/central -o sec=krb5
mount.cifs: permission denied: no match for /home/CauserC/central found in 
/etc/fstab

# Sudo mount.cifs with/without suid root
$ sudo mount.cifs  //server/share/directory ~/central -o sec=krb5
mount error(126): Required key not available

I do definitely have a kerberos ticket, and both klist and "sudo klist"
show it to me.

Now, it does work if I do a "sudo kinit $USERNAME." Then a sudo
mount.cifs mounts the share no problem. This is obviously less than
ideal because it involves typing in a password again, and subsequent non
sudo klists result in:

$ klist
klist: Credentials cache permissions incorrect while setting cache flags 
(ticket cache FILE:/tmp/krb5cc_10009_8ZePnt)

I'm tempted to file this as a bug report but wanted to check in here
first to make sure that I'm not doing anything stupid. As I say, I never
tried this in Lucid as suid root worked fine.

Any help appreciated

Chris

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: smbfs 2:4.5-2
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic-pae 2.6.35.4
Uname: Linux 2.6.35-22-generic-pae i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Wed Nov 17 15:20:14 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: cifs-utils

** Affects: cifs-utils (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 maverick

-- 
mount.cifs cannot mount with kerberos
https://bugs.launchpad.net/bugs/676525
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