[LTP] [PATCH v6 1/6] Refactor mqns_01 using new LTP API

[Petr Vorel]

Hi Andrea,

> +++ b/runtest/containers
> @@ -16,7 +16,8 @@ pidns31 pidns31
>  pidns32 pidns32

>  mqns_01 mqns_01
Also, if anybody run this tests without params, it's actually not testing
unshade as it was before (i.e. the default case is doing something different,
than the main purpose of the test).

> -mqns_01_clone mqns_01 -clone
> +mqns_01_clone mqns_01 -m clone
> +mqns_01_unshare mqns_01 -m unshare
BTW I'm verbose on changes during rewrite, I'd notice the fact that one extra
run, which tests just fork (i.e. case where pass - the opposite is expected).


> +++ b/testcases/kernel/containers/mqns/mqns_01.c
> +/*\
> + * [Description]
> + *
> + * Create a mqueue inside the parent and check if it can be accessed from
> + * the child namespace.
Actually my previous note "verify if cannot" is invalid, when -m is not set
(fork call).  Again, I'd mention it here.

...
> +		if (!SAFE_CLONE(&clone_args)) {
> +			TST_EXP_FAIL(mq_open(MQNAME, O_RDONLY), ENOENT);
> +			return;
> +		}
> +	} else if (str_op && !strcmp(str_op, "unshare")) {
> +		tst_res(TINFO, "Spawning unshared process");
> +
> +		if (!SAFE_FORK()) {
> +			SAFE_UNSHARE(CLONE_NEWIPC);
> +			TST_EXP_FAIL(mq_open(MQNAME, O_RDONLY), ENOENT);
> +			return;
>  		}
>  	} else {
> -		if (write(p2[1], "exists", strlen("exists") + 1) < 0) {
> -			perror("write(p2[1], \"exists\", 7) failed");
> -			exit(1);
> -		} else if (mq_close(mqd) < 0) {
> -			perror("mq_close(mqd) failed");
> -			exit(1);
> +		tst_res(TINFO, "Spawning plain process");
> +
> +		if (!SAFE_FORK()) {
> +			TST_EXP_POSITIVE(mq_open(MQNAME, O_RDONLY));
nit: shouldn't this be TST_EXP_FD() (no real change, just extra "fd" being printed.

Kind regards,
Petr