+int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
+ struct inet_diag_msg *r, int ext,
+ struct user_namespace *user_ns)
+{
+ const struct inet_sock *inet = inet_sk(sk);
+
+ if (nla_put_u8(skb, INET_DIAG_SHUTDOWN, sk->sk_shutdown))
+ goto errout;
+
+ /* IPv6 dual-stack sockets use inet->tos for IPv4 connections,
+ * hence this needs to be included regardless of socket family.
+ */
+ if (ext & (1 << (INET_DIAG_TOS - 1)))
+ if (nla_put_u8(skb, INET_DIAG_TOS, inet->tos) < 0)
+ goto errout;
+
+#if IS_ENABLED(CONFIG_IPV6)
+ if (r->idiag_family == AF_INET6) {
+ if (ext & (1 << (INET_DIAG_TCLASS - 1)))
+ if (nla_put_u8(skb, INET_DIAG_TCLASS,
+ inet6_sk(sk)->tclass) < 0)
+ goto errout;
+
+ if (((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) &&
+ nla_put_u8(skb, INET_DIAG_SKV6ONLY, ipv6_only_sock(sk)))
+ goto errout;
+ }
+#endif
+
+ r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk));
+ r->idiag_inode = sock_i_ino(sk);
+
+ return 0;
+errout:
+ return 1;
+}
+EXPORT_SYMBOL_GPL(inet_diag_msg_attrs_fill);
+