[LTP] [PATCH v2 04/33] keyctl12: Test KEYCTL_DESCRIBE with too small buffer

[Cyril Hrubis]

Hi!
> +static void run(void)
> +{
> +	size_t i;
> +
> +	memset(buf, 0xAA, sizeof(buf));
> +	TST_EXP_EQ_LI_SILENT(keyctl(KEYCTL_DESCRIBE, key, (unsigned long)buf,
> +				    desc_len - 1, 0), desc_len);
> +	if (!TST_PASS)
> +		return;
> +
> +	for (i = 0; i < sizeof(buf); i++) {
> +		if (buf[i] != (char)0xAA) {
> +			tst_res(TFAIL,
> +				"too small buffer was written to at offset %zu",
> +				i);
> +			return;
> +		}
> +	}

It may make sense to loop this with:

	for (buf_len = 0; buf_len < desc_len; buf_len++) {
		...
	}

It should be fast and would increase the coverage..

-- 
Cyril Hrubis
chrubis@suse.cz