[LTP] [PATCH v2] getcwd01: Implement .test_variants

[Petr Vorel]

Hi Cyril, all,

> Hi!
> > @Li @Cyril: are you ok to test libc getcwd() wrapper implementations on NULL
> > buffer in getcwd01.c? Or we just skip NULL buffer test on all libc?
> > I would be ok to test it, because change in the implementation can influence
> > lots of user space software, although glibc or any other libc can obviously
> > change it's behavior.

> I guess that the easiest solution is to run the test in a child and pass
> the test both on EFAULT and child being killed by SIGSEGV. Any special
> cases and ifdefs are assuming something that is not promised and will
> have to be changed sooner or later.

Good point. I guess something like testcases/kernel/syscalls/mmap/mmap05.c
approach right? Wei, could you try that?

Kind regards,
Petr