[LTP] [PATCH] lib: tst_fd: Avoid tst_brk(TCONF, ...) on older distros

[Petr Vorel]

> Hi!
> > Actually at least here tst_syscall() needs to be called or it fails on older
> > distros due missing ENOSYS check in raw syscall():

> Ah, no we have to handle the ENOSYS ourselves as we do in the other
> cases. Sorry for not realizing that.

> We likely need just:

Yes, I also realized that when I double check your commit message.

Kind regards,
Petr

> diff --git a/lib/tst_fd.c b/lib/tst_fd.c
> index ab7de81aa..8b26ff8e5 100644
> --- a/lib/tst_fd.c
> +++ b/lib/tst_fd.c
> @@ -141,7 +141,7 @@ static void open_pidfd(struct tst_fd *fd)
>  {
>         fd->fd = syscall(__NR_pidfd_open, getpid(), 0);
>         if (fd->fd < 0)
> -               tst_brk(TBROK | TERRNO, "pidfd_open()");
> +               tst_res(TCONF | TERRNO, "pidfd_open()");
>  }


> The tst_sycall() can't be called there at all _because_ it calls
> tst_brk() itself.