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[Dimitri John Ledkov <launchpad@xxxxxxxxxxxx>]

** Also affects: s390-tools (Ubuntu Xenial)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1567473

Title:
  s390-tools: missing ts-shell

Status in Ubuntu on IBM z Systems:
  Triaged
Status in s390-tools package in Ubuntu:
  Triaged
Status in s390-tools source package in Xenial:
  New

Bug description:
  s390-tools: missing ts-shell

  ts-shell is part of the s390-tools package (see here
  http://www.ibm.com/developerworks/linux/linux390/s390-tools-
  overview.html)

  ts-shell is a terminal server shell to authorize and control IUCV
  terminal connections for individual Linux users. It is currently still
  missing in the Ubuntu Beta version (4.4.0-15-generic #31-Ubuntu SMP
  Fri Mar 18 19:07:12 UTC 2016 s390x).

  The preferred integration of ts-shell is through a subpackage.  The
  ts-shell is required on a particular Linux instance only, that it is
  the terminal server.  Other Linux instances might not need to install
  ts-shell.

  Apart from the installing ts-shell, further configuration files and
  steps are required:

  1. Install and package these configuration files:

  /etc/iucvterm/ts-audit-systems.conf
  /etc/iucvterm/ts-authorization.conf
  /etc/iucvterm/ts-shell.conf
  /etc/iucvterm/unrestricted.conf

  
  2. Install additional documentation files for the ts-shell, that are included in the "iucvterm/doc/ts-shell" in the s390-tools source directory.

  
  3. System configuration for ts-shell.

  - (optional) Register ts-shell as shell by adding it to /etc/shells.
  - Create a ts-shell group.
  - Ensure the configuration files from 1. are readable by the ts-shell group.
  - Create the /var/log/ts-shell directory to store audit logs; the ts-shell group should have read/write access to this directory, implemented as set-group-ID

  4. Optional.  The ts-shell subpackage must depend on s390-tools
  because it requires iucvconn. Further, the subpackage should add a
  Recommends to either Term::ReadLine::Gnu or Term::ReadLine::Perl.


  Below is an excpert from the README.ts-shell to create ts-shell user
  accounts.  These information should help to better understand the
  configuration steps above:

  Setup considerations for the terminal server shell (ts-shell)
  -------------------------------------------------------------
  Adding new ts-shell users
  ~~~~~~~~~~~~~~~~~~~~~~~~~
  The ts-shell installation creates a system group ts-shell.
  If you intend to use ts-shell as a login shell for users, ensure that
  these users are all members of ts-shell.  To add existing users to
  group ts-shell, use +usermod -G ts-shell 'username'+.

  The ts-shell configuration files and `/var/log/ts-shell` are
  readable only by members of the *ts-shell* group.

  
  Enabling terminal session transcripts
  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ts-shell(1) can be configured to create transcripts of terminal sessions
  to particular z/VM guest virtual machines. The transcripts are written
  to log files in the `/var/log/ts-shell` directory.

  NOTE:   The `/var/log/ts-shell` directory permission has the
          set-group-ID bit set. Sub-directories that are created by
          different users will inherit the group ownership of the
          `/var/log/ts-shell` directory.

  See the ts-shell(1) manual page for more information about terminal
  session transcripts.

  
  For further details, see http://public.dhe.ibm.com/software/dw/linux390/docu/l4n0ht01.pdf

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