* Get the parent directory, calculate the hash for last
* component.
*/
- err = path_lookup(sunaddr->sun_path, LOOKUP_PARENT, &nd);
+ err = kern_path_parent(sunaddr->sun_path, &nd);
if (err)
goto out_mknod_parent;
/* Latch our state.
- It is tricky place. We need to grab write lock and cannot
+ It is tricky place. We need to grab our state lock and cannot
drop lock on peer. It is dangerous because deadlock is
possible. Connect to self case and simultaneous
attempt to connect are eliminated by checking socket
newsk->sk_type = sk->sk_type;
init_peercred(newsk);
newu = unix_sk(newsk);
- newsk->sk_wq = &newu->peer_wq;
+ RCU_INIT_POINTER(newsk->sk_wq, &newu->peer_wq);
otheru = unix_sk(other);
/* copy address information from listening to new sock*/
goto out_free;
}
+ if (sk_filter(other, skb) < 0) {
+ /* Toss the packet but do not return any error to the sender */
+ err = len;
+ goto out_free;
+ }
+
unix_state_lock(other);
err = -EPERM;
if (!unix_may_send(sk, other))
struct sock_iocb *siocb = kiocb_to_siocb(kiocb);
struct sock *sk = sock->sk;
struct sock *other = NULL;
- struct sockaddr_un *sunaddr = msg->msg_name;
int err, size;
struct sk_buff *skb;
int sent = 0;
err = sk->sk_state == TCP_ESTABLISHED ? -EISCONN : -EOPNOTSUPP;
goto out_err;
} else {
- sunaddr = NULL;
err = -ENOTCONN;
other = unix_peer(sk);
if (!other)
msg->msg_namelen = 0;
- mutex_lock(&u->readlock);
+ err = mutex_lock_interruptible(&u->readlock);
+ if (err) {
+ err = sock_intr_errno(sock_rcvtimeo(sk, noblock));
+ goto out;
+ }
skb = skb_recv_datagram(sk, flags, noblock, &err);
if (!skb) {
memset(&tmp_scm, 0, sizeof(tmp_scm));
}
- mutex_lock(&u->readlock);
+ err = mutex_lock_interruptible(&u->readlock);
+ if (err) {
+ err = sock_intr_errno(timeo);
+ goto out;
+ }
do {
int chunk;
timeo = unix_stream_data_wait(sk, timeo);
- if (signal_pending(current)) {
+ if (signal_pending(current)
+ || mutex_lock_interruptible(&u->readlock)) {
err = sock_intr_errno(timeo);
goto out;
}
- mutex_lock(&u->readlock);
+
continue;
unlock:
unix_state_unlock(sk);
mode = (mode+1)&(RCV_SHUTDOWN|SEND_SHUTDOWN);
- if (mode) {
- unix_state_lock(sk);
- sk->sk_shutdown |= mode;
- other = unix_peer(sk);
- if (other)
- sock_hold(other);
- unix_state_unlock(sk);
- sk->sk_state_change(sk);
-
- if (other &&
- (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET)) {
-
- int peer_mode = 0;
-
- if (mode&RCV_SHUTDOWN)
- peer_mode |= SEND_SHUTDOWN;
- if (mode&SEND_SHUTDOWN)
- peer_mode |= RCV_SHUTDOWN;
- unix_state_lock(other);
- other->sk_shutdown |= peer_mode;
- unix_state_unlock(other);
- other->sk_state_change(other);
- if (peer_mode == SHUTDOWN_MASK)
- sk_wake_async(other, SOCK_WAKE_WAITD, POLL_HUP);
- else if (peer_mode & RCV_SHUTDOWN)
- sk_wake_async(other, SOCK_WAKE_WAITD, POLL_IN);
- }
- if (other)
- sock_put(other);
+ if (!mode)
+ return 0;
+
+ unix_state_lock(sk);
+ sk->sk_shutdown |= mode;
+ other = unix_peer(sk);
+ if (other)
+ sock_hold(other);
+ unix_state_unlock(sk);
+ sk->sk_state_change(sk);
+
+ if (other &&
+ (sk->sk_type == SOCK_STREAM || sk->sk_type == SOCK_SEQPACKET)) {
+
+ int peer_mode = 0;
+
+ if (mode&RCV_SHUTDOWN)
+ peer_mode |= SEND_SHUTDOWN;
+ if (mode&SEND_SHUTDOWN)
+ peer_mode |= RCV_SHUTDOWN;
+ unix_state_lock(other);
+ other->sk_shutdown |= peer_mode;
+ unix_state_unlock(other);
+ other->sk_state_change(other);
+ if (peer_mode == SHUTDOWN_MASK)
+ sk_wake_async(other, SOCK_WAKE_WAITD, POLL_HUP);
+ else if (peer_mode & RCV_SHUTDOWN)
+ sk_wake_async(other, SOCK_WAKE_WAITD, POLL_IN);
}
+ if (other)
+ sock_put(other);
+
return 0;
}