[Bug 1995294] Re: rmdir: failed to remove '/etc/systemd/system/ssh.socket.d': Directory not empty

[Brian Murray]

Hello Nick, or anyone else affected,

Accepted openssh into kinetic-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/openssh/1:9.0p1-1ubuntu7.1 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
kinetic to verification-done-kinetic. If it does not fix the bug for
you, please add a comment stating that, and change the tag to
verification-failed-kinetic. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: openssh (Ubuntu Kinetic)
       Status: Triaged => Fix Committed

** Tags added: verification-needed verification-needed-kinetic

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https://bugs.launchpad.net/bugs/1995294

Title:
  rmdir: failed to remove '/etc/systemd/system/ssh.socket.d': Directory
  not empty

Status in openssh package in Ubuntu:
  Triaged
Status in openssh source package in Kinetic:
  Fix Committed

Bug description:
  [Impact]

  If a user a has an existing drop-in config for ssh.socket in
  /etc/systemd/system/ssh.socket.d upgrades to kinetic, and openssh-
  server.postint determines it should *not* perform migration to socket-
  activated ssh, they will receive an error from dpkg:

  Errors were encountered while processing:
   openssh-server
  Exception during pm.DoInstall():  E:Sub-process /usr/bin/dpkg returned an error code (1)

  Could not install the upgrades

  The upgrade has aborted. Your system could be in an unusable state. A 
  recovery will run now (dpkg --configure -a). 

  Please report this bug in a browser at 
  http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug 
  and attach the files in /var/log/dist-upgrade/ to the bug report. 
  E:Sub-process /usr/bin/dpkg returned an error code (1) 

  Setting up openssh-server (1:9.0p1-1ubuntu7) ...
  rmdir: failed to remove '/etc/systemd/system/ssh.socket.d': Directory not empty
  dpkg: error processing package openssh-server (--configure):
   installed openssh-server package post-installation script subprocess returned error exit status 1
  Errors were encountered while processing:
   openssh-server

  [Test Plan]

  * On a Jammy machine, install openssh-server if necessary. Edit
  /etc/ssh/sshd_config to contain the following:

  $ cat /etc/ssh/sshd_config
  [... defaults everywhere else ...]

  #Port 22
  #AddressFamily any
  ListenAddress 0.0.0.0
  ListenAddress ::

  [... defaults everywhere else ...]

  * Create a trivial drop-in override for ssh.socket:

  $ systemctl edit ssh.socket
  $ cat /etc/systemd/system/ssh.socket.d/override.conf 
  [Unit]
  Description=Testing

  * Now perform an upgrade to Kinetic, and observe the dpkg error.

  [Where problems could occur]
  The solution should be to use rmdir's --ignore-fail-on-empty flag. If the flag was mis-spelled, that would produce a new error.

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