aa_label_snxprint
int aa_label_snxprint(char *str, size_t size, struct aa_ns *view,
size = aa_label_snxprint(NULL, 0, ns, label, flags);
return aa_label_snxprint(*strp, size + 1, ns, label, flags);
size = aa_label_snxprint(NULL, 0, ns, label, flags);
return aa_label_snxprint(*strp, size + 1, ns, label, flags);
len = aa_label_snxprint(NULL, 0, current_ns, label,
len = aa_label_snxprint(*string, len + 2, current_ns, label,
len = aa_label_snxprint(NULL, 0, root_ns, label, flags);