diff options
Diffstat (limited to 'net/unix/af_unix.c')
| -rw-r--r-- | net/unix/af_unix.c | 48 |
1 files changed, 15 insertions, 33 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 2d465bdeccbc..d1edfa3cad61 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -430,7 +430,12 @@ static int unix_dgram_peer_wake_me(struct sock *sk, struct sock *other) connected = unix_dgram_peer_wake_connect(sk, other); - if (unix_recvq_full(other)) + /* If other is SOCK_DEAD, we want to make sure we signal + * POLLOUT, such that a subsequent write() can get a + * -ECONNREFUSED. Otherwise, if we haven't queued any skbs + * to other and its full, we will hang waiting for POLLOUT. + */ + if (unix_recvq_full(other) && !sock_flag(other, SOCK_DEAD)) return 1; if (connected) @@ -637,7 +642,7 @@ static int unix_stream_connect(struct socket *, struct sockaddr *, int addr_len, int flags); static int unix_socketpair(struct socket *, struct socket *); static int unix_accept(struct socket *, struct socket *, int, bool); -static int unix_getname(struct socket *, struct sockaddr *, int *, int); +static int unix_getname(struct socket *, struct sockaddr *, int); static __poll_t unix_poll(struct file *, struct socket *, poll_table *); static __poll_t unix_dgram_poll(struct file *, struct socket *, poll_table *); @@ -745,14 +750,6 @@ static struct proto unix_proto = { .obj_size = sizeof(struct unix_sock), }; -/* - * AF_UNIX sockets do not interact with hardware, hence they - * dont trigger interrupts - so it's safe for them to have - * bh-unsafe locking for their sk_receive_queue.lock. Split off - * this special lock-class by reinitializing the spinlock key: - */ -static struct lock_class_key af_unix_sk_receive_queue_lock_key; - static struct sock *unix_create1(struct net *net, struct socket *sock, int kern) { struct sock *sk = NULL; @@ -767,8 +764,6 @@ static struct sock *unix_create1(struct net *net, struct socket *sock, int kern) goto out; sock_init_data(sock, sk); - lockdep_set_class(&sk->sk_receive_queue.lock, - &af_unix_sk_receive_queue_lock_key); sk->sk_allocation = GFP_KERNEL_ACCOUNT; sk->sk_write_space = unix_write_space; @@ -1453,7 +1448,7 @@ out: } -static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer) +static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int peer) { struct sock *sk = sock->sk; struct unix_sock *u; @@ -1476,12 +1471,12 @@ static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_ if (!u->addr) { sunaddr->sun_family = AF_UNIX; sunaddr->sun_path[0] = 0; - *uaddr_len = sizeof(short); + err = sizeof(short); } else { struct unix_address *addr = u->addr; - *uaddr_len = addr->len; - memcpy(sunaddr, addr->name, *uaddr_len); + err = addr->len; + memcpy(sunaddr, addr->name, addr->len); } unix_state_unlock(sk); sock_put(sk); @@ -2645,7 +2640,7 @@ static __poll_t unix_poll(struct file *file, struct socket *sock, poll_table *wa struct sock *sk = sock->sk; __poll_t mask; - sock_poll_wait(file, sk_sleep(sk), wait); + sock_poll_wait(file, wait); mask = 0; /* exceptional events? */ @@ -2682,7 +2677,7 @@ static __poll_t unix_dgram_poll(struct file *file, struct socket *sock, unsigned int writable; __poll_t mask; - sock_poll_wait(file, sk_sleep(sk), wait); + sock_poll_wait(file, wait); mask = 0; /* exceptional events? */ @@ -2862,20 +2857,6 @@ static const struct seq_operations unix_seq_ops = { .stop = unix_seq_stop, .show = unix_seq_show, }; - -static int unix_seq_open(struct inode *inode, struct file *file) -{ - return seq_open_net(inode, file, &unix_seq_ops, - sizeof(struct seq_net_private)); -} - -static const struct file_operations unix_seq_fops = { - .open = unix_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release_net, -}; - #endif static const struct net_proto_family unix_family_ops = { @@ -2894,7 +2875,8 @@ static int __net_init unix_net_init(struct net *net) goto out; #ifdef CONFIG_PROC_FS - if (!proc_create("unix", 0, net->proc_net, &unix_seq_fops)) { + if (!proc_create_net("unix", 0, net->proc_net, &unix_seq_ops, + sizeof(struct seq_net_private))) { unix_sysctl_unregister(net); goto out; } |