Function strnlen

src/commonlib/bsd/string.c:16–31

}

size_t strnlen(const char *str, size_t maxlen)
{
	const char *ptr = str;
	const char *end = str + maxlen;

	if (!maxlen)
		return 0;

	while (*ptr++) {
		/* Make sure this checks for ==, not >=, because the calculation
		   for `end` may overflow in some edge cases. */
		if (ptr == end)
			return maxlen;
	}
	return ptr - str - 1;
}

char *strcat(char *dst, const char *src)
{