[LTP] [PATCH v2 1/1] [STAGING] ioctl_pidfd06: accept EREMOTE/ESRCH for PIDFD_GET_INFO across pidns

[Petr Vorel]

Hi Jan,

> PIDFD_GET_INFO semantics changed for pidfds referring to tasks without a PID
> in the caller's current pid namespace (commit ab89060fbc92e ("pidfs: return
> -EREMOTE when PIDFD_GET_INFO is called on another ns")).

> Accept both errnos to keep the test working on kernels with and without the
> change (including backports).

LGTM, thanks!
Reviewed-by: Petr Vorel <pvorel@suse.cz>

Kind regards,
Petr

> Signed-off-by: Jan Polensky <japo@linux.ibm.com>
> ---
>  testcases/kernel/syscalls/ioctl/ioctl_pidfd06.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

> diff --git a/testcases/kernel/syscalls/ioctl/ioctl_pidfd06.c b/testcases/kernel/syscalls/ioctl/ioctl_pidfd06.c
> index 751281bacb74..6b4bc3191e37 100644
> --- a/testcases/kernel/syscalls/ioctl/ioctl_pidfd06.c
> +++ b/testcases/kernel/syscalls/ioctl/ioctl_pidfd06.c
> @@ -14,6 +14,7 @@

>  static struct tst_clone_args *args;
>  static struct pidfd_info *info;
> +static const int exp_errnos[] = {EREMOTE, ESRCH};

>  static void run(void)
>  {
> @@ -41,7 +42,8 @@ static void run(void)
>  	args->exit_signal = SIGCHLD;

>  	if (!SAFE_CLONE(args)) {
> -		TST_EXP_FAIL(ioctl(pidfd, PIDFD_GET_INFO, info), ESRCH);
> +		TST_EXP_FAIL_ARR(ioctl(pidfd, PIDFD_GET_INFO, info), exp_errnos,
> +				ARRAY_SIZE(exp_errnos));
>  		exit(0);
>  	}