+static int inet6_rtm_getaddr(struct sk_buff *in_skb,
+ struct nlmsghdr* nlh, void *arg)
+{
+ struct rtattr **rta = arg;
+ struct ifaddrmsg *ifm = NLMSG_DATA(nlh);
+ struct in6_addr *addr = NULL;
+ struct net_device *dev = NULL;
+ struct inet6_ifaddr *ifa;
+ struct sk_buff *skb;
+ int size = NLMSG_SPACE(sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE);
+ int err;
+
+ if (rta[IFA_ADDRESS-1]) {
+ if (RTA_PAYLOAD(rta[IFA_ADDRESS-1]) < sizeof(*addr))
+ return -EINVAL;
+ addr = RTA_DATA(rta[IFA_ADDRESS-1]);
+ }
+ if (rta[IFA_LOCAL-1]) {
+ if (RTA_PAYLOAD(rta[IFA_LOCAL-1]) < sizeof(*addr) ||
+ (addr && memcmp(addr, RTA_DATA(rta[IFA_LOCAL-1]), sizeof(*addr))))
+ return -EINVAL;
+ addr = RTA_DATA(rta[IFA_LOCAL-1]);
+ }
+ if (addr == NULL)
+ return -EINVAL;
+
+ if (ifm->ifa_index)
+ dev = __dev_get_by_index(ifm->ifa_index);
+
+ if ((ifa = ipv6_get_ifaddr(addr, dev, 1)) == NULL)
+ return -EADDRNOTAVAIL;
+
+ if ((skb = alloc_skb(size, GFP_KERNEL)) == NULL) {
+ err = -ENOBUFS;
+ goto out;
+ }
+
+ NETLINK_CB(skb).dst_pid = NETLINK_CB(in_skb).pid;
+ err = inet6_fill_ifaddr(skb, ifa, NETLINK_CB(in_skb).pid,
+ nlh->nlmsg_seq, RTM_NEWADDR, 0);
+ if (err < 0) {
+ err = -EMSGSIZE;
+ goto out_free;
+ }
+
+ err = netlink_unicast(rtnl, skb, NETLINK_CB(in_skb).pid, MSG_DONTWAIT);
+ if (err > 0)
+ err = 0;
+out:
+ in6_ifa_put(ifa);
+ return err;
+out_free:
+ kfree_skb(skb);
+ goto out;
+}
+