[IrDA]: MSG_NOSIGNAL support for IrDA sockets

Signed-off-by: NSamuel Ortiz <samuel@sortiz.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/irda/af_irda.c

@@ -1245,18 +1245,17 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
 	struct sock *sk = sock->sk;
 	struct irda_sock *self;
 	struct sk_buff *skb;
-	int err;
+	int err = -EPIPE;
 
 	IRDA_DEBUG(4, "%s(), len=%zd\n", __FUNCTION__, len);
 
 	/* Note : socket.c set MSG_EOR on SEQPACKET sockets */
-	if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
+	if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR | MSG_CMSG_COMPAT |
+			       MSG_NOSIGNAL))
 		return -EINVAL;
 
-	if (sk->sk_shutdown & SEND_SHUTDOWN) {
-		send_sig(SIGPIPE, current, 0);
-		return -EPIPE;
-	}
+	if (sk->sk_shutdown & SEND_SHUTDOWN)
+		goto out_err;
 
 	if (sk->sk_state != TCP_ESTABLISHED)
 		return -ENOTCONN;
@@ -1283,7 +1282,7 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
 	skb = sock_alloc_send_skb(sk, len + self->max_header_size + 16,
 				  msg->msg_flags & MSG_DONTWAIT, &err);
 	if (!skb)
-		return -ENOBUFS;
+		goto out_err;
 
 	skb_reserve(skb, self->max_header_size + 16);
 	skb_reset_transport_header(skb);
@@ -1291,7 +1290,7 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
 	err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len);
 	if (err) {
 		kfree_skb(skb);
-		return err;
+		goto out_err;
 	}
 
 	/*
@@ -1301,10 +1300,14 @@ static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
 	err = irttp_data_request(self->tsap, skb);
 	if (err) {
 		IRDA_DEBUG(0, "%s(), err=%d\n", __FUNCTION__, err);
-		return err;
+		goto out_err;
 	}
 	/* Tell client how much data we actually sent */
 	return len;
+
+ out_err:
+	return sk_stream_error(sk, msg->msg_flags, err);
+
 }
 
 /*