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
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