[Bug 1683507] [NEW] znetconf: Unexpected non-zero return code

[John George]

Public bug reported:

$ lsb_release -rd
Description:	Ubuntu 17.04
Release:	17.04

$ apt-cache policy s390-tools
s390-tools:
  Installed: 1.37.0-0ubuntu3
  Candidate: 1.37.0-0ubuntu3
  Version table:
 *** 1.37.0-0ubuntu3 500
        500 http://us.ports.ubuntu.com/ubuntu-ports zesty/main s390x Packages
        100 /var/lib/dpkg/status

When benign options such as --help or --version are passed to znetconf,
on a system with no ccwgroup devices (i.e. /sys/bus/ccwgroup does not
exist) the return code is non-zero. This is inconsistent behavior
compared to other utilities shipped in the s390-tools package and a
hindrance to dep8 autopkgtests tests. Please see LP bug 1616596 for
further discussion as to why this can be an impact. The unexpected
return code is shown here:

$ znetconf -v
znetconf: Error: There are no ccwgroup devices
$ echo $?
31

$ znetconf -h
znetconf: Error: There are no ccwgroup devices
$ echo $?
31

The expected result in the case of passing the -v and -h options is the
installed version and help listing.

** Affects: s390-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: s390x

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https://bugs.launchpad.net/bugs/1683507

Title:
  znetconf: Unexpected non-zero return code

Status in s390-tools package in Ubuntu:
  New

Bug description:
  $ lsb_release -rd
  Description:	Ubuntu 17.04
  Release:	17.04

  $ apt-cache policy s390-tools
  s390-tools:
    Installed: 1.37.0-0ubuntu3
    Candidate: 1.37.0-0ubuntu3
    Version table:
   *** 1.37.0-0ubuntu3 500
          500 http://us.ports.ubuntu.com/ubuntu-ports zesty/main s390x Packages
          100 /var/lib/dpkg/status

  When benign options such as --help or --version are passed to
  znetconf, on a system with no ccwgroup devices (i.e. /sys/bus/ccwgroup
  does not exist) the return code is non-zero. This is inconsistent
  behavior compared to other utilities shipped in the s390-tools package
  and a hindrance to dep8 autopkgtests tests. Please see LP bug 1616596
  for further discussion as to why this can be an impact. The unexpected
  return code is shown here:

  $ znetconf -v
  znetconf: Error: There are no ccwgroup devices
  $ echo $?
  31

  $ znetconf -h
  znetconf: Error: There are no ccwgroup devices
  $ echo $?
  31

  The expected result in the case of passing the -v and -h options is
  the installed version and help listing.

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