diff options
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/socket.c | 143 |
1 files changed, 72 insertions, 71 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 348e4ff881a..df196038436 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1248,77 +1248,78 @@ static void wakeupdispatch(struct tipc_port *tport) static int connect(struct socket *sock, struct sockaddr *dest, int destlen, int flags) { - struct tipc_sock *tsock = tipc_sk(sock->sk); - struct sockaddr_tipc *dst = (struct sockaddr_tipc *)dest; - struct msghdr m = {NULL,}; - struct sk_buff *buf; - struct tipc_msg *msg; - int res; - - /* For now, TIPC does not allow use of connect() with DGRAM or RDM types */ - - if (sock->state == SS_READY) - return -EOPNOTSUPP; - - /* For now, TIPC does not support the non-blocking form of connect() */ - - if (flags & O_NONBLOCK) - return -EWOULDBLOCK; - - /* Issue Posix-compliant error code if socket is in the wrong state */ - - if (sock->state == SS_LISTENING) - return -EOPNOTSUPP; - if (sock->state == SS_CONNECTING) - return -EALREADY; - if (sock->state != SS_UNCONNECTED) - return -EISCONN; - - /* - * Reject connection attempt using multicast address - * - * Note: send_msg() validates the rest of the address fields, - * so there's no need to do it here - */ - - if (dst->addrtype == TIPC_ADDR_MCAST) - return -EINVAL; - - /* Send a 'SYN-' to destination */ - - m.msg_name = dest; - m.msg_namelen = destlen; - if ((res = send_msg(NULL, sock, &m, 0)) < 0) { - sock->state = SS_DISCONNECTING; - return res; - } - - if (mutex_lock_interruptible(&tsock->lock)) - return -ERESTARTSYS; - - /* Wait for destination's 'ACK' response */ - - res = wait_event_interruptible_timeout(*sock->sk->sk_sleep, - skb_queue_len(&sock->sk->sk_receive_queue), - sock->sk->sk_rcvtimeo); - buf = skb_peek(&sock->sk->sk_receive_queue); - if (res > 0) { - msg = buf_msg(buf); - res = auto_connect(sock, tsock, msg); - if (!res) { - if (!msg_data_sz(msg)) - advance_queue(tsock); - } - } else { - if (res == 0) { - res = -ETIMEDOUT; - } else - { /* leave "res" unchanged */ } - sock->state = SS_DISCONNECTING; - } - - mutex_unlock(&tsock->lock); - return res; + struct tipc_sock *tsock = tipc_sk(sock->sk); + struct sockaddr_tipc *dst = (struct sockaddr_tipc *)dest; + struct msghdr m = {NULL,}; + struct sk_buff *buf; + struct tipc_msg *msg; + int res; + + /* For now, TIPC does not allow use of connect() with DGRAM/RDM types */ + + if (sock->state == SS_READY) + return -EOPNOTSUPP; + + /* For now, TIPC does not support the non-blocking form of connect() */ + + if (flags & O_NONBLOCK) + return -EWOULDBLOCK; + + /* Issue Posix-compliant error code if socket is in the wrong state */ + + if (sock->state == SS_LISTENING) + return -EOPNOTSUPP; + if (sock->state == SS_CONNECTING) + return -EALREADY; + if (sock->state != SS_UNCONNECTED) + return -EISCONN; + + /* + * Reject connection attempt using multicast address + * + * Note: send_msg() validates the rest of the address fields, + * so there's no need to do it here + */ + + if (dst->addrtype == TIPC_ADDR_MCAST) + return -EINVAL; + + /* Send a 'SYN-' to destination */ + + m.msg_name = dest; + m.msg_namelen = destlen; + res = send_msg(NULL, sock, &m, 0); + if (res < 0) { + sock->state = SS_DISCONNECTING; + return res; + } + + if (mutex_lock_interruptible(&tsock->lock)) + return -ERESTARTSYS; + + /* Wait for destination's 'ACK' response */ + + res = wait_event_interruptible_timeout(*sock->sk->sk_sleep, + skb_queue_len(&sock->sk->sk_receive_queue), + sock->sk->sk_rcvtimeo); + buf = skb_peek(&sock->sk->sk_receive_queue); + if (res > 0) { + msg = buf_msg(buf); + res = auto_connect(sock, tsock, msg); + if (!res) { + if (!msg_data_sz(msg)) + advance_queue(tsock); + } + } else { + if (res == 0) + res = -ETIMEDOUT; + else + ; /* leave "res" unchanged */ + sock->state = SS_DISCONNECTING; + } + + mutex_unlock(&tsock->lock); + return res; } /** |