[LTP] [PATCH v3] Introduce ioctl_pidfd_get_info_supported() function

[Petr Vorel]

Hi Avinesh,

> use this routine in ioctl_pidfd05 before proceeding with the test

Reviewed-by: Petr Vorel <pvorel@suse.cz>

BTW, when testing on 6.11, I got:
ioctl_pidfd05.c:45: TFAIL: ioctl(pidfd, PIDFD_GET_INFO, NULL) expected EINVAL: ENOTTY (25)

Which is error unrelated to this patch, it's from original.
196988f7d1 ("Add ioctl_pidfd05 test")

Doc in ioctl_pidfd_info_exit_supported() is clear about it:
		/* - ENOTTY: old kernels not implementing fs/pidfs.c:pidfd_ioctl
		 * - EINVAL: until v6.13 kernel
		 * - ESRCH: all kernels between v6.13 and v6.15
		 */

But test happily ignores the fact :).

@Cyril do we want to fix it? Do we want to check for kernel versions or we just
take any of these values?

Kind regards,
Petr