posix_acl_equiv_mode
err = posix_acl_equiv_mode(acl, mode);
error = posix_acl_equiv_mode(*acl, &mode);
if ((posix_acl_equiv_mode(res.acl_access, NULL) == 0) ||
EXPORT_SYMBOL(posix_acl_equiv_mode);
error = posix_acl_equiv_mode(*acl, &mode);
extern int posix_acl_equiv_mode(const struct posix_acl *, umode_t *);