Re: [PATCH 2/3] hwclock: remove audit from control struct

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On 3 September 2017 at 20:59, J William Piggott <elseifthen@xxxxxxx> wrote:
> On 08/30/2017 01:56 PM, J William Piggott wrote:
>> On 08/30/2017 03:40 AM, Karel Zak wrote:
>>> On Tue, Aug 29, 2017 at 12:34:07PM -0400, J William Piggott wrote:
>>>>
>>>> hwaudit_on is only used in main() and hwclock_exit() and
>>>> that is unlikely to ever change.
>>>
>>>  Hmm... the goal is minimize global variables to keep code readable.
>>>  It's strange to have a control struct and use global variable in the
>>>  same time.
>>>
>>>> Remove it from the control struct because it:
>>>>  * cleans up an ugly directive in hwclock_exit
>>>>  * removes an argument from usage() and hwclock_exit()
>>>>  * makes usage() comply with util-linux standards
>>>
>>>  I think usage() can call exit(EXIT_SUCCESS) and do not need play any
>>>  games with audit at all.
>>
>> True for half of hwclock's functions. Perhaps this special exit
>> handling should only exist when we HAVE_LIBAUDIT?
>>
>> Okay, I'll rethink this and update the pull request.
>
> So it seems that there are more problems with exit and audit handling
> then I first thought. Improving them is going to be more invasive and
> will need to wait for refactoring of main() and manipulate_clock().
>
> For now I have implemented Karel's idea to mix the use of hwclock_exit()
> and exit().
>
> Pushed changes to the same branch:
>
> The following changes since commit 58d57ae2d88ef638e3ff07c213b5158334d3f658:
>
>   tests: update sfdisk wipe test (2017-09-01 10:42:51 +0200)
>
> are available in the git repository at:
>
>   git@xxxxxxxxxx:jwpi/util-linux.git 170825
>
> for you to fetch changes up to 5b8e46f7e7710e2bb88ff8e763997830c9494df2:
>
>   hwclock: close hwaudit_fd unconditionally (2017-09-03 12:34:03 -0400)
>
> ----------------------------------------------------------------
> J William Piggott (3):
>       hwclock: remove sysexits.h
>       hwclock: don't always use hwclock_exit
>       hwclock: close hwaudit_fd unconditionally
>
>  sys-utils/hwclock-rtc.c |  5 ++--
>  sys-utils/hwclock.8.in  |  8 ++++++

Update to manual telling return zero is success and one is failure feels
unnecessary. I don't think any other manual page does that, and most
users know these values without being explicit. It's the unusual return
codes that we should document so that users has some idea what
could it mean  when a command returns 42.

>  sys-utils/hwclock.c     | 76 ++++++++++++++++++-------------------------------
>  3 files changed, 37 insertions(+), 52 deletions(-)
>
>>
>>>
>>>  On another places we have "ctl" so it's fine fine to keep hwaudit_on
>>>  within the control struct.

-- 
Sami Kerola
http://www.iki.fi/kerolasa/
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