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path: root/net/iucv/af_iucv.c
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Diffstat (limited to 'net/iucv/af_iucv.c')
-rw-r--r--net/iucv/af_iucv.c24
1 files changed, 17 insertions, 7 deletions
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 49e786535dc8..b51c9187c347 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -172,6 +172,7 @@ static void iucv_sock_close(struct sock *sk)
err = iucv_sock_wait_state(sk, IUCV_CLOSED, 0, timeo);
}
+ case IUCV_CLOSING: /* fall through */
sk->sk_state = IUCV_CLOSED;
sk->sk_state_change(sk);
@@ -224,6 +225,8 @@ static struct sock *iucv_sock_alloc(struct socket *sock, int proto, gfp_t prio)
spin_lock_init(&iucv_sk(sk)->message_q.lock);
skb_queue_head_init(&iucv_sk(sk)->backlog_skb_q);
iucv_sk(sk)->send_tag = 0;
+ iucv_sk(sk)->path = NULL;
+ memset(&iucv_sk(sk)->src_user_id , 0, 32);
sk->sk_destruct = iucv_sock_destruct;
sk->sk_sndtimeo = IUCV_CONN_TIMEOUT;
@@ -811,6 +814,8 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
target = sock_rcvlowat(sk, flags & MSG_WAITALL, len);
+ /* receive/dequeue next skb:
+ * the function understands MSG_PEEK and, thus, does not dequeue skb */
skb = skb_recv_datagram(sk, flags, noblock, &err);
if (!skb) {
if (sk->sk_shutdown & RCV_SHUTDOWN)
@@ -858,9 +863,7 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
iucv_process_message_q(sk);
spin_unlock_bh(&iucv->message_q.lock);
}
-
- } else
- skb_queue_head(&sk->sk_receive_queue, skb);
+ }
done:
return err ? : copied;
@@ -934,6 +937,9 @@ static int iucv_sock_shutdown(struct socket *sock, int how)
lock_sock(sk);
switch (sk->sk_state) {
+ case IUCV_DISCONN:
+ case IUCV_CLOSING:
+ case IUCV_SEVERED:
case IUCV_CLOSED:
err = -ENOTCONN;
goto fail;
@@ -1113,8 +1119,12 @@ static void iucv_callback_rx(struct iucv_path *path, struct iucv_message *msg)
struct sock_msg_q *save_msg;
int len;
- if (sk->sk_shutdown & RCV_SHUTDOWN)
+ if (sk->sk_shutdown & RCV_SHUTDOWN) {
+ iucv_message_reject(path, msg);
return;
+ }
+
+ spin_lock(&iucv->message_q.lock);
if (!list_empty(&iucv->message_q.list) ||
!skb_queue_empty(&iucv->backlog_skb_q))
@@ -1129,9 +1139,8 @@ static void iucv_callback_rx(struct iucv_path *path, struct iucv_message *msg)
if (!skb)
goto save_message;
- spin_lock(&iucv->message_q.lock);
iucv_process_message(sk, skb, path, msg);
- spin_unlock(&iucv->message_q.lock);
+ goto out_unlock;
return;
@@ -1142,8 +1151,9 @@ save_message:
save_msg->path = path;
save_msg->msg = *msg;
- spin_lock(&iucv->message_q.lock);
list_add_tail(&save_msg->list, &iucv->message_q.list);
+
+out_unlock:
spin_unlock(&iucv->message_q.lock);
}