[Bug 1811861] [NEW] incorrect permissions on /var/log after debootstrap

[Frederic Van Espen]

Public bug reported:

we are debootstrapping a full bionic distribution into a directory.
After debootstrapping the permissions on /var/log are incorrect, causing
rsyslog to fail because it cannot write into the directory to create the
various files.

Also, in the postinst of the rsyslog package I see that systemd-tmpfiles is attempted to be used to create the files defined in /usr/lib/tmpfiles.d/00rsyslog.conf, but from what I can tell this will never work because of the systemd-tmpfiles manpage:
       --create
           If this option is passed, all files and directories marked with f, F, w, d, D, v, p, L, c, b, m in the configuration files are
           created or written to. Files and directories marked with z, Z, t, T, a, and A have their ownership, access mode and security
           labels set.

Since the files are configured with type "z" only ownership, access mode
and security will be updated.

# lsb_release -rd
Description:	Ubuntu 18.04.1 LTS
Release:	18.04

# apt-cache policy rsyslog
rsyslog:
  Installed: 8.32.0-1ubuntu4
  Candidate: 8.32.0-1ubuntu4
  Version table:
 *** 8.32.0-1ubuntu4 100
        100 /var/lib/dpkg/status

** Affects: rsyslog (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1811861

Title:
  incorrect permissions on /var/log after debootstrap

Status in rsyslog package in Ubuntu:
  New

Bug description:
  we are debootstrapping a full bionic distribution into a directory.
  After debootstrapping the permissions on /var/log are incorrect,
  causing rsyslog to fail because it cannot write into the directory to
  create the various files.

  Also, in the postinst of the rsyslog package I see that systemd-tmpfiles is attempted to be used to create the files defined in /usr/lib/tmpfiles.d/00rsyslog.conf, but from what I can tell this will never work because of the systemd-tmpfiles manpage:
         --create
             If this option is passed, all files and directories marked with f, F, w, d, D, v, p, L, c, b, m in the configuration files are
             created or written to. Files and directories marked with z, Z, t, T, a, and A have their ownership, access mode and security
             labels set.

  Since the files are configured with type "z" only ownership, access
  mode  and security will be updated.

  # lsb_release -rd
  Description:	Ubuntu 18.04.1 LTS
  Release:	18.04

  # apt-cache policy rsyslog
  rsyslog:
    Installed: 8.32.0-1ubuntu4
    Candidate: 8.32.0-1ubuntu4
    Version table:
   *** 8.32.0-1ubuntu4 100
          100 /var/lib/dpkg/status

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