1 files changed, 15 insertions, 1 deletions

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 3a43a8304768..b1d75beb7e20 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -524,6 +524,8 @@ static int unix_dgram_connect(struct socket *, struct sockaddr *,
                               int, int);
 static int unix_seqpacket_sendmsg(struct kiocb *, struct socket *,
                                   struct msghdr *, size_t);
+static int unix_seqpacket_recvmsg(struct kiocb *, struct socket *,
+                                  struct msghdr *, size_t, int);
 
 static const struct proto_ops unix_stream_ops = {
         .family =       PF_UNIX,
@@ -583,7 +585,7 @@ static const struct proto_ops unix_seqpacket_ops = {
         .setsockopt =   sock_no_setsockopt,
         .getsockopt =   sock_no_getsockopt,
         .sendmsg =      unix_seqpacket_sendmsg,
-        .recvmsg =      unix_dgram_recvmsg,
+        .recvmsg =      unix_seqpacket_recvmsg,
         .mmap =         sock_no_mmap,
         .sendpage =     sock_no_sendpage,
 };
@@ -1699,6 +1701,18 @@ static int unix_seqpacket_sendmsg(struct kiocb *kiocb, struct socket *sock,
         return unix_dgram_sendmsg(kiocb, sock, msg, len);
 }
 
+static int unix_seqpacket_recvmsg(struct kiocb *iocb, struct socket *sock,
+                              struct msghdr *msg, size_t size,
+                              int flags)
+{
+        struct sock *sk = sock->sk;
+
+        if (sk->sk_state != TCP_ESTABLISHED)
+                return -ENOTCONN;
+
+        return unix_dgram_recvmsg(iocb, sock, msg, size, flags);
+}
+
 static void unix_copy_addr(struct msghdr *msg, struct sock *sk)
 {
         struct unix_sock *u = unix_sk(sk);