upgrade to 10.10 breaks login if using pam_encfs

[John McManigle]

PROBLEM
=======
Due to an error in devname.c of util-linux, the upgrade to 10.10 leads to the inability to login for anyone with pam_encfs enabled, hanging at "(Interface.cpp:165) checking if nameio/block(3:0:1) implements
nameio/block(3:0:0) "

This is described (with a fix) as bug #593336 on google group linux.debian.bugs.dist ( http://groups.google.com/group/linux.debian.bugs.dist/browse_thread/thread/accc7d6cce95b9f4/80f49718cff30f42 ). I applied the patch on that page to util-linux on my computer, and the problem was resolved. The patch is attached.

WORKAROUND
==========
Downgrade mount to 2.16, that is, to the version from Karmic: http://packages.ubuntu.com/karmic/mount

RELEASE NOTES
=============
This is as serious issue and should be mentioned in the release notes until it's fixed.

[Ole Wolf (ole.wolf)]

I had converted an originally unencrypted home directory on 10.04 to an encrypted home directory using the guide at: https://wiki.ubuntu.com/EncryptedHomeFolder. My recent upgrade to 10.10 caused the error described here.

Temporary work-around: Manually downgrading util-linux to 2.16 and downgrading mount to the previous release (i.e., downloading via the repository pools and installing with dkpg) reenabled the encrypted home folder on login. I assume it was the util-linux downgrade and not the mount downgrade that helped.

[m.eik michalke (m.eik)]

had the same problem. i tried the patch provided by John McManigle, and it solved it.

[Jakob Unterwurzacher (jakobunt)]

Note that the mentioned patch is already commited upstream:
http://git.kernel.org/?p=utils/util-linux/util-linux.git;a=commitdiff;h=1cf4c20b198c0c6566198fd00b983d9aaf8321bc

[Phillip Susi (psusi)]

It seems this was fixed some time ago.