broken PAM; read before updating(was: libtirpc update)

[winlu]

libirpc was updated and PAM needed a rebuild, since that is probably still in the build queue (and failing) it is currently not advisable to -Syu. you will end up with a system with broken PAM.

[imp]

Indeed, I faced the same problem after updating libtirpc today.

As pam is still linked to the old version, it won't work :)
$this->bbcode_second_pass_code('', '
$ ldd /usr/lib/security/pam_unix.so
...
libtirpc.so.1 => /usr/lib/libtirpc.so.1 (0xb6e99000)
')

A temporary fix, awaiting the rebuild, is to make a symlink with the old name to one of the new versions.
$this->bbcode_second_pass_code('', '
libtirpc /usr/lib/libtirpc.so
libtirpc /usr/lib/libtirpc.so.3
libtirpc /usr/lib/libtirpc.so.3.0.0
')

[WarheadsSE]

The devs are aware and looking to resolve this.

EDIT: have fixed.

[mcloaked]

I have a cubox which I updated and rebooted - and running headless - and no longer can ssh in to do anything either as root or user. I tried to pull out the sd card and add in a symlink as suggested above

# ls -lh /usr/lib/libtirpc
lrwxrwxrwx 1 root root 72 Nov 11 15:07 /usr/lib/libtirpc -> /usr/lib/libtirpc.so

and also tried adding the following link:

# ls -l usr/lib/libtirpc.so.1
lrwxrwxrwx 1 root root 21 Nov 11 15:36 usr/lib/libtirpc.so.1 -> usr/lib/libtirpc.so.3

But this does not let me ssh in any more either (I get a connection closed response when logging in as root - and I do have PermitRootLogin as well as an AllowedUsers list in /etc/ssh/sshd_config). Can anyone suggest how I can get my system as a temporary fix so that I can log in again via ssh?

Thanks

[imp]

Both of your symlinks are simply wrong.
Fix that and you should be fine.

[mcloaked]

I had made the wrong link - thank you to another user who pointed out that I had used the incorrect link which should have been link /usr/lib/libtirpc.so.1 to /usr/lib/libtirpc.so

After doing that by editing the file on the sd card using a laptop then reinstating the sd card, I could boot, login and then run pacman to update to the newer fixed version of pam. (pam 1.2.1-2) and all now seems well.

[Mrerexx]

Hi! I've copied /usr/lib/libtirpc.so.3.0.0 to /usr/lib/libtirpc.so.1 and it works.