sealert fails when selinuxfs is not mounted

Issue

• sestatus reporting SELinux is disabled, yet system was booted with it enabled

  # sestatus
  SELinux status:                 disabled
  

• sealert -a /var/log/audit/audit.log fails with following traceback

  Traceback (most recent call last):
    File "/usr/bin/sealert", line 683, in <module>
      do_analyze_logfile(logfile)
    File "/usr/bin/sealert", line 527, in do_analyze_logfile
      scanner = ScanLogfile(logfile_path)
    File "/usr/bin/sealert", line 489, in __init__
      from setroubleshoot.analyze import LogfileAnalyzer
  ValueError: You must specify the -p option with the path to the policy file.
  

• semanage fails with following

  # semanage fcontext --add --type=postfix_local_tmp_t /var/opt/bz1421160
  SELinux:  Could not downgrade policy file /etc/selinux/targeted/policy/policy.30, searching for an older version.
  SELinux:  Could not open policy file <= /etc/selinux/targeted/policy/policy.30:  No such file or directory
  /sbin/load_policy:  Can't load policy:  No such file or directory
  libsemanage.semanage_reload_policy: load_policy returned error code 2. (No such file or directory).
  SELinux:  Could not downgrade policy file /etc/selinux/targeted/policy/policy.30, searching for an older version.
  SELinux:  Could not open policy file <= /etc/selinux/targeted/policy/policy.30:  No such file or directory
  /sbin/load_policy:  Can't load policy:  No such file or directory
  libsemanage.semanage_reload_policy: load_policy returned error code 2. (No such file or directory).
  OSError: No such file or directory