[LTP] [PATCH v2 2/2] msgget03: don't depend on existed shared resources

[Petr Vorel]

Hi all,

> Hi Cyril, Petr
> > Hi!
> >>> I think that we allready discussed this in another thread:

> >>> https://lists.linux.it/pipermail/ltp/2021-July/023831.html

> >> Thanks, I forgot this. In that case my approach (not using<=, but count
> >> segments in /proc/sysvipc/shm before testing) might be more precise.
> >> But no strong feeling about that, both solutions fix the test, let's chose one
> >> and merge.

> > As I said previously, there are many SysV IPC tests that do expect that
> > nobody will add/remove IPC shm/queue/semaphores during the testrun and
> > some of the testcases cannot even be implemented without this
> > expectation.

> > Hence I wouldn't complicate the test here and just count how many
> > segments are there at the start and be done with it.
> Agree.

> A possible solution(alter get_used_queues api in new ipc lib and add 
> file parametrers, so we can use this api for msgget03) I have mentioned 
> in the previous email, the url as below:
> https://lists.linux.it/pipermail/ltp/2021-July/023653.html
LGTM. Or use /proc/sysvipc/shm instead of /proc/sysvipc/msg in get_used_queues()
as you noted get_used_queues() has not been used yet.

BTW searching where get_used_queues() appeared, I see [LTP] [PATCH v3 1/4]
syscalls/ipc: add newipc library for new API [1], but if I'm not mistaken
get_used_queues() was not used even there, maybe it was in some previous
versions.

Kind regards,
Petr

[1] https://lists.linux.it/pipermail/ltp/2016-December/003239.html