[LTP] [PATCH v3 4/4] syscalls/clock_adjtime: create clock_adjtime syscall tests

[Rafael David Tinoco]

> +static void setup(void)
> +{
> +	size_t i;
> +	int rval;
> +
> +	/* check if clock is TIME_OK and save original clock flags */
> +
> +	rval = SAFE_CLOCK_ADJTIME(CLOCK_REALTIME, &saved);
> +
> +	if (rval != TIME_OK)
> +		tst_brk(TBROK | TTERRNO, "unsynced clock or on-going leap”);

I choose to break test if rval > 0 mainly because it could still have
on-going leap operations, since clock_adjtime() is async, and also
because doing the test with an unsynced clock seems weird.

Ran both or 10 seconds w/out any issue.

Same for clock_adtime02:

> +static void setup(void)
> +{
> +	size_t i;
> +	int rval;
> +
> +	/* check if clock is TIME_OK and save original clock flags */
> +
> +	rval = SAFE_CLOCK_ADJTIME(CLOCK_REALTIME, &saved);
> +
> +	if (rval != TIME_OK)
> +		tst_brk(TBROK | TTERRNO, "unsynced clock or on-going leap");
> +