audit: make audit_compare_dname_path use parent_len helper

 * return of 0 indicates a match. */

int audit_compare_dname_path(const char *dname, const char *path)

{

	int dlen, plen;

	int dlen, pathlen, parentlen;

	const char *p;

	if (!dname || !path)

		return 1;

	dlen = strlen(dname);

	plen = strlen(path);

	if (plen < dlen)

	pathlen = strlen(path);

	if (pathlen < dlen)

		return 1;

	/* disregard trailing slashes */

	p = path + plen - 1;

	while ((*p == '/') && (p > path))

		p--;

	/* find last path component */

	p = p - dlen + 1;

	if (p < path)

		return 1;

	else if (p > path) {

		if (*--p != '/')

	parentlen = parent_len(path);

	if (pathlen - parentlen != dlen)

		return 1;

		else

			p++;

	}

	p = path + parentlen;

	return strncmp(p, dname, dlen);

}