[LTP] [PATCH v5 16/16] Add listmount04 test

[Cyril Hrubis]

Hi!
> +	{
> +		.req = &request_small,
> +		.mnt_ids = mnt_ids,
> +		.nr_mnt_ids = MNT_SIZE,
> +		.flags = 0,
> +		.exp_errno = EINVAL,
> +		.msg = "request has insufficient size",
> +	},

It took me a while to realize that this is a request with .size set to
0, which is obviously rejected as invalid. Maybe it should be called
request_zero_size instead.

Also there is quite a bit more errors we can trigger, looking at
statmount kernel syscall we can easily trigger at least:

- param > 0 && param <= MNT_UNIUQE_ID_OFFSET -> EINVAL
- spare != 0 -> EINVAL
- nonexisting mnt_ns_id -> ENOENT

-- 
Cyril Hrubis
chrubis@suse.cz