[LTP] [PATCH] syscalls/mq_open: fix limits for queues_max

[Cyril Hrubis]

Hi!
> This case fails on RHEL6.8GA and RHEL6.9Beta, because setting
> queues_max to 0 is invalid.  the minimum value of queues_max
> has been limitted to 1 on some distributions, Please see the
> following kernel commit:
> 
> commit 5b5c4d1a1440e94994c73dddbad7be0676cd8b9a
> Author: Doug Ledford <dledford@redhat.com>
> Date:   Thu May 31 16:26:30 2012 -0700
> 
> 	ipc/mqueue: update maximums for the mqueue subsystem
> 
> We set queues_max to 1 instead of 0, so this case can work on RHEL6.

First I think that you have wrong commit, the one that actually added
the limits was:

commit 93e6f119c0ce8a1bba6e81dc8dd97d67be360844
Author: Doug Ledford <dledford@redhat.com>
Date:   Thu May 31 16:26:28 2012 -0700

    ipc/mqueue: cleanup definition names and locations

Since this commit changes the proc handler in sysctl table and adds the minimum
and maximum values there.

Secondly these limits were removed in:

commit a5c5928b759d8c7382cccc7be36769a68046cc58
Author: Joe Perches <joe@perches.com>
Date:   Fri Jun 6 14:38:07 2014 -0700

    ipc: convert use of typedef ctl_table to struct ctl_table


I'm not sure if this is worth the effort.

Jan what do you think, should we apply this to fix the test on RHEL6?

-- 
Cyril Hrubis
chrubis@suse.cz