+static int copy_counters_to_user(struct ebt_table *t,
+ const struct ebt_counter *oldcounters,
+ void __user *user, unsigned int num_counters,
+ unsigned int nentries)
+{
+ struct ebt_counter *counterstmp;
+ int ret = 0;
+
+ /* userspace might not need the counters */
+ if (num_counters == 0)
+ return 0;
+
+ if (num_counters != nentries) {
+ BUGPRINT("Num_counters wrong\n");
+ return -EINVAL;
+ }
+
+ counterstmp = vmalloc(nentries * sizeof(*counterstmp));
+ if (!counterstmp)
+ return -ENOMEM;
+
+ write_lock_bh(&t->lock);
+ get_counters(oldcounters, counterstmp, nentries);
+ write_unlock_bh(&t->lock);
+
+ if (copy_to_user(user, counterstmp,
+ nentries * sizeof(struct ebt_counter)))
+ ret = -EFAULT;
+ vfree(counterstmp);
+ return ret;
+}
+