[Bug 1616596] Comment bridged from LTC Bugzilla

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------- Comment From MAIER at de.ibm.com 2016-09-15 09:48 EDT-------
FYI: The patch in attachment 111971 has neither been reviewed nor accepted so far, so no guarantees this will ever go upstream like that.

I'm still interested in an answer to my question:
Why is the return code of --help or --version a problem?

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Title:
  ziomon_util: Unexpected return code

Status in Ubuntu on IBM z Systems:
  Fix Released
Status in s390-tools package in Ubuntu:
  Fix Released

Bug description:
  $ lsb_release -rd
  Description: Ubuntu 16.04 LTS
  Release: 16.04

  $ apt-cache policy s390-tools
  s390-tools:
    Installed: 1.34.0-0ubuntu8.1
    Candidate: 1.34.0-0ubuntu8.1

  When benign options such as --help or --version are passed to ziomon_util the expected output is printed but the return code is non-zero. The unexpected return code is shown here:
      ubuntu at s5lp1-gen01:~$ ziomon_util --help
      Usage: ziomon_util [-h] [-v] [-V] [-i n] [-s n] [-Q <msgq_path> -q <msgq_id>
                         -m <msg_id>] -d n -a <n> -l <lun>

      Start the monitor for the host adapter utilization.
      Example: ziomon_util -d 60 -i 4 -a 0

      -h, --help            Print usage information and exit.
      -v, --version         Print version information and exit.
      -V, --verbose         Be verbose.
      -s, --sample-length   Duration between each sample in seconds.
                            Defaults to 2 seconds.
      -i, --interval-length Aggregate samples over this duration (in seconds).
                            Defaults to 'duration'.
      -d, --duration        Overall duration in seconds.
      -a, --adapter         Host adapter no. to watch. Specify each host adapter
                            separately.
      -l, --lun             watch I/O error count of LUN. Specify each LUN
                            separately in h:b:t:l format.
      -Q, --msg-queue-name  Specify the message queue path name.
      -q, --msg-queue-id    Specify the message queue id.
      -m, --msg-id          Specify the message id to use.
      -L, --msg-id-ioerr    Specify the message id for I/O error count messages.
      ubuntu at s5lp1-gen01:~$ echo $?
      255

      ubuntu at s5lp1-gen01:~$ ziomon_util --version
      ziomon_util: ziomon utilization monitor, version 1.34.0-build-20160609
      Copyright IBM Corp. 2008
      ubuntu at s5lp1-gen01:~$ echo $?
      255

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