Re: ecryptfs doesn´t like noauto and noatime

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Hi Jakob,

Am Dienstag, 17. Januar 2012 schrieb Jakob Unterwurzacher:
> On 17.01.2012 09:37, Martin Steigerwald wrote:
> > Am Dienstag, 17. Januar 2012 schrieb Jakob Unterwurzacher:
> >> On 16.01.2012 10:44, Martin Steigerwald wrote:
> >>> Hi!
> >>> 
> >>> I have
> >>> 
> >>> merkaba:~> grep ecrypt /etc/fstab
> >>> /home/.ms               /home/ms                ecryptfs
> >>> noatime,noauto  0       0
> >>> 
> >>> And get:
> >>> 
> >>> merkaba:~> mount /home/ms
> > 
> >>> Passphrase:
> > […]
> > 
> >>> Error mounting eCryptfs: [-5] Input/output error
> > 
> > […]
> > 
> >>> Still it works.
> >>> 
> >>> 
> >>> In dmesg I see:
> >>> 
> >>> [ 2657.888355] ecryptfs_parse_options: eCryptfs: unrecognized option
> >>> [noauto]
> >>> [ 2657.888359] ecryptfs_parse_options: eCryptfs: unrecognized option
> >>> [noatime]
> >>> [ 2657.913215] alg: No test for __gcm-aes-aesni
> >>> (__driver-gcm-aes-aesni)
> >>> 
> >>> 
> >>> Thus I removed at least noatime, but then I still see:
> >>> 
> >>> [ 2839.460200] ecryptfs_parse_options: eCryptfs: unrecognized option
> >>> [noauto]
> > 
> > […]
> > 
> >>> Without noatime it would ask me the passwort upon boot, but I do not
> >>> like that since I do not use that user everytime.
> > 
> > noauto that is.
> > 
> >>> I could use mounting via pam, but I like to have a different password
> >>> for the user stored in /etc/shadow than the password from the
> >>> filesystem itself.
> >> 
> >> Note that this should work by creating ~/.ecryptfs/wrapping-independent
> >> . Pam will ask for the ecryptfs password explicitely then.
> > 
> > Thanks.
> > 
> > Would that also work within a display manager like kdm?
> > 
> > Ciao,
> 
> Yes! It will ask for two passwords on login.

Hmmm, I think this won't work for me.

This is used by ecryptfs-mount-private it seems, but I am not only encrypting 
/home/$USER/Private, but /home/$USER itself. Thus I'd like to mount ~ as is 
with a different passphrase than my PAM login password.

I tried putting an empty ~/.ecryptfs/wrapping-independent, which has the sig-
cache.txt for the /home/ms mount but this doesn't do the trick, I am not asked 
for a password and home directory remains empty. I could put 

Is it true that PAM ecryptfs stuff is only for a ~/Private directory?

Then that would be a reason for me to make a feature request ;).

Thanks,
-- 
Martin Steigerwald - teamix GmbH - http://www.teamix.de
gpg: 19E3 8D42 896F D004 08AC A0CA 1E10 C593 0399 AE90
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