diff options
| -rw-r--r-- | net/appletalk/ddp.c | 105 |
1 files changed, 77 insertions, 28 deletions
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c index 7cd08b45c52b..31fca64d17a2 100644 --- a/net/appletalk/ddp.c +++ b/net/appletalk/ddp.c @@ -1055,11 +1055,13 @@ static int atalk_release(struct socket *sock) { struct sock *sk = sock->sk; + lock_kernel(); if (sk) { sock_orphan(sk); sock->sk = NULL; atalk_destroy_socket(sk); } + unlock_kernel(); return 0; } @@ -1135,6 +1137,7 @@ static int atalk_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) struct sockaddr_at *addr = (struct sockaddr_at *)uaddr; struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); + int err; if (!sock_flag(sk, SOCK_ZAPPED) || addr_len != sizeof(struct sockaddr_at)) @@ -1143,37 +1146,44 @@ static int atalk_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) if (addr->sat_family != AF_APPLETALK) return -EAFNOSUPPORT; + lock_kernel(); if (addr->sat_addr.s_net == htons(ATADDR_ANYNET)) { struct atalk_addr *ap = atalk_find_primary(); + err = -EADDRNOTAVAIL; if (!ap) - return -EADDRNOTAVAIL; + goto out; at->src_net = addr->sat_addr.s_net = ap->s_net; at->src_node = addr->sat_addr.s_node= ap->s_node; } else { + err = -EADDRNOTAVAIL; if (!atalk_find_interface(addr->sat_addr.s_net, addr->sat_addr.s_node)) - return -EADDRNOTAVAIL; + goto out; at->src_net = addr->sat_addr.s_net; at->src_node = addr->sat_addr.s_node; } if (addr->sat_port == ATADDR_ANYPORT) { - int n = atalk_pick_and_bind_port(sk, addr); + err = atalk_pick_and_bind_port(sk, addr); - if (n < 0) - return n; + if (err < 0) + goto out; } else { at->src_port = addr->sat_port; + err = -EADDRINUSE; if (atalk_find_or_insert_socket(sk, addr)) - return -EADDRINUSE; + goto out; } sock_reset_flag(sk, SOCK_ZAPPED); - return 0; + err = 0; +out: + unlock_kernel(); + return err; } /* Set the address we talk to */ @@ -1183,6 +1193,7 @@ static int atalk_connect(struct socket *sock, struct sockaddr *uaddr, struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); struct sockaddr_at *addr; + int err; sk->sk_state = TCP_CLOSE; sock->state = SS_UNCONNECTED; @@ -1207,12 +1218,15 @@ static int atalk_connect(struct socket *sock, struct sockaddr *uaddr, #endif } + lock_kernel(); + err = -EBUSY; if (sock_flag(sk, SOCK_ZAPPED)) if (atalk_autobind(sk) < 0) - return -EBUSY; + goto out; + err = -ENETUNREACH; if (!atrtr_get_dev(&addr->sat_addr)) - return -ENETUNREACH; + goto out; at->dest_port = addr->sat_port; at->dest_net = addr->sat_addr.s_net; @@ -1220,7 +1234,10 @@ static int atalk_connect(struct socket *sock, struct sockaddr *uaddr, sock->state = SS_CONNECTED; sk->sk_state = TCP_ESTABLISHED; - return 0; + err = 0; +out: + unlock_kernel(); + return err; } /* @@ -1233,17 +1250,21 @@ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr, struct sockaddr_at sat; struct sock *sk = sock->sk; struct atalk_sock *at = at_sk(sk); + int err; + lock_kernel(); + err = -ENOBUFS; if (sock_flag(sk, SOCK_ZAPPED)) if (atalk_autobind(sk) < 0) - return -ENOBUFS; + goto out; *uaddr_len = sizeof(struct sockaddr_at); memset(&sat.sat_zero, 0, sizeof(sat.sat_zero)); if (peer) { + err = -ENOTCONN; if (sk->sk_state != TCP_ESTABLISHED) - return -ENOTCONN; + goto out; sat.sat_addr.s_net = at->dest_net; sat.sat_addr.s_node = at->dest_node; @@ -1254,9 +1275,23 @@ static int atalk_getname(struct socket *sock, struct sockaddr *uaddr, sat.sat_port = at->src_port; } + err = 0; sat.sat_family = AF_APPLETALK; memcpy(uaddr, &sat, sizeof(sat)); - return 0; + +out: + unlock_kernel(); + return err; +} + +static unsigned int atalk_poll(struct file *file, struct socket *sock, + poll_table *wait) +{ + int err; + lock_kernel(); + err = datagram_poll(file, sock, wait); + unlock_kernel(); + return err; } #if defined(CONFIG_IPDDP) || defined(CONFIG_IPDDP_MODULE) @@ -1564,23 +1599,28 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr if (len > DDP_MAXSZ) return -EMSGSIZE; + lock_kernel(); if (usat) { + err = -EBUSY; if (sock_flag(sk, SOCK_ZAPPED)) if (atalk_autobind(sk) < 0) - return -EBUSY; + goto out; + err = -EINVAL; if (msg->msg_namelen < sizeof(*usat) || usat->sat_family != AF_APPLETALK) - return -EINVAL; + goto out; + err = -EPERM; /* netatalk didn't implement this check */ if (usat->sat_addr.s_node == ATADDR_BCAST && !sock_flag(sk, SOCK_BROADCAST)) { - return -EPERM; + goto out; } } else { + err = -ENOTCONN; if (sk->sk_state != TCP_ESTABLISHED) - return -ENOTCONN; + goto out; usat = &local_satalk; usat->sat_family = AF_APPLETALK; usat->sat_port = at->dest_port; @@ -1604,8 +1644,9 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr rt = atrtr_find(&at_hint); } + err = ENETUNREACH; if (!rt) - return -ENETUNREACH; + goto out; dev = rt->dev; @@ -1615,7 +1656,7 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr size += dev->hard_header_len; skb = sock_alloc_send_skb(sk, size, (flags & MSG_DONTWAIT), &err); if (!skb) - return err; + goto out; skb->sk = sk; skb_reserve(skb, ddp_dl->header_length); @@ -1638,7 +1679,8 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr err = memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len); if (err) { kfree_skb(skb); - return -EFAULT; + err = -EFAULT; + goto out; } if (sk->sk_no_check == 1) @@ -1677,7 +1719,8 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr rt = atrtr_find(&at_lo); if (!rt) { kfree_skb(skb); - return -ENETUNREACH; + err = -ENETUNREACH; + goto out; } dev = rt->dev; skb->dev = dev; @@ -1697,7 +1740,9 @@ static int atalk_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr } SOCK_DEBUG(sk, "SK %p: Done write (%Zd).\n", sk, len); - return len; +out: + unlock_kernel(); + return err ? : len; } static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, @@ -1709,10 +1754,13 @@ static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr int copied = 0; int offset = 0; int err = 0; - struct sk_buff *skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, + struct sk_buff *skb; + + lock_kernel(); + skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &err); if (!skb) - return err; + goto out; /* FIXME: use skb->cb to be able to use shared skbs */ ddp = ddp_hdr(skb); @@ -1740,6 +1788,9 @@ static int atalk_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr } skb_free_datagram(sk, skb); /* Free the datagram. */ + +out: + unlock_kernel(); return err ? : copied; } @@ -1830,7 +1881,7 @@ static const struct net_proto_family atalk_family_ops = { .owner = THIS_MODULE, }; -static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = { +static const struct proto_ops atalk_dgram_ops = { .family = PF_APPLETALK, .owner = THIS_MODULE, .release = atalk_release, @@ -1839,7 +1890,7 @@ static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = { .socketpair = sock_no_socketpair, .accept = sock_no_accept, .getname = atalk_getname, - .poll = datagram_poll, + .poll = atalk_poll, .ioctl = atalk_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = atalk_compat_ioctl, @@ -1854,8 +1905,6 @@ static const struct proto_ops SOCKOPS_WRAPPED(atalk_dgram_ops) = { .sendpage = sock_no_sendpage, }; -SOCKOPS_WRAP(atalk_dgram, PF_APPLETALK); - static struct notifier_block ddp_notifier = { .notifier_call = ddp_device_event, }; |