Re: [LTP] [fs] ce436509a8: ltp.openat203.fail

[Cyril Hrubis]

Hi!
> > > commit: ce436509a8e109330c56bb4d8ec87d258788f5f4 ("[PATCH v4 2/3] fs: openat2: Extend open_how to allow userspace-selected fds")
> > > url: https://github.com/0day-ci/linux/commits/Josh-Triplett/Support-userspace-selected-fds/20200414-102939
> > > base: https://git.kernel.org/cgit/linux/kernel/git/shuah/linux-kselftest.git next
> > 
> > This commit adds fd parameter to the how structure where LTP test was
> > previously passing garbage, which obviously causes the difference in
> > errno.
> > 
> > This could be safely ignored for now, if the patch gets merged the test
> > needs to be updated.
> 
> It wouldn't be a bad idea to switch the test to figure out the ksize of
> the struct, so that you only add bad padding after that. But then again,
> this would be a bit ugly -- having CHECK_FIELDS would make this simpler.

Any pointers how can be the size figured out without relying on the
E2BIG we are testing for? Does the kernel export it somewhere?

-- 
Cyril Hrubis
chrubis@xxxxxxx