On Wed, Jun 17, 2020 at 09:26:19AM -0500, Bruce Dubbs wrote:
> On 6/17/20 9:19 AM, Ken Moffat wrote:
> > I've now completed, and booted, a build of the new-style LFS. I'm
> > loggied in (and using ssh to write this post). Both my normal
> > users (ken, lfs), as well as root can login - so the passwords are
> > correct.
> >
> > But only root can su, so I'm not going to be able to build anything
> > after I've built X and run 'startx'.
> >
> > If I try to su, either to root or to another user, I get:
> >
> > ken@plexi /sources/scripts/lfs-dev/git$ su - lfs
> > Password:
> > su: Authentication failure
> >
> > And /var/log/auth.log shows
> >
> > Jun 17 14:48:04 plexi su[14069]: Authentication failed for root
> > Jun 17 14:48:04 plexi su[14069]: FAILED su for root by ken
> > Jun 17 14:48:04 plexi su[14069]: - /dev/tty2 ken:rootJun 17 14:49:10 plexi
> > su[14077]: Authentication failed for root
> > Jun 17 14:49:10 plexi su[14077]: FAILED su for root by lfs
> > Jun 17 14:49:10 plexi su[14077]: - /dev/tty2 lfs:root
> > [...]
> > Jun 17 14:50:19 plexi su[14086]: Authentication failed for root
> > Jun 17 14:50:19 plexi su[14086]: FAILED su for root by ken
> > Jun 17 14:50:19 plexi su[14086]: - /dev/tty3 ken:root
> > Jun 17 15:01:05 plexi su[14206]: Authentication failed for lfs
> > Jun 17 15:01:05 plexi su[14206]: FAILED su for lfs by ken
> > Jun 17 15:01:05 plexi su[14206]: - /dev/tty5 ken:lfs
> > Jun 17 15:02:48 plexi su[14207]: Successful su for ken by root
> > Jun 17 15:02:48 plexi su[14207]: + /dev/tty2 root:ken
> >
> > At this point I don't have PAM installed. 'su' is from shadow-4.8.1.
> >
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > Looking at shadow, I've made two changes since my last successful
> > build:
> >
> > First, I applied the change to make the first user 1000 (until now I
> > had omitted that)
> >
> > sed -i 's/1000/999/' etc/useradd
> >
> > Second, I changed the sed to force SHA512 to match the book (just
> > reformatting) and git shows the following for my change:
> >
> > -sed -i -e 's@#ENCRYPT_METHOD DES@ENCRYPT_METHOD SHA512@' \
> > - -e 's@/var/spool/mail@/var/mail@' etc/login.defs 2>$KM_LOG
> > +sed -e 's@#ENCRYPT_METHOD DES@ENCRYPT_METHOD SHA512@' \
> > + -e 's@/var/spool/mail@/var/mail@' \
> > + -i etc/login.defs 2>$KM_LOG
> >
> > I'm at a loss to know where I should be looking. Any suggestions,
> > please ?
>
> I'm still a little behind you. I have not built PAM yet, but have you
> rebuilt shadow after PAM?
>
> -- Bruce
>
Hi Bruce, I have not installed PAM at this point.
ĸen
--
He died at the console, of hunger and thirst.
Next day he was buried, face-down, nine-edge first.
- the perfect programmer
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