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| author | David S. Miller <davem@sunset.davemloft.net> | 2007-08-02 19:23:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-08-02 19:42:28 -0700 |
| commit | 3516ffb0fef710749daf288c0fe146503e0cf9d4 (patch) | |
| tree | f3e3cd29dd541a457e61152560fe4416642a69bc /net | |
| parent | 1bcabbdb0bdfe8b15b05150a7857646430aaa7f8 (diff) | |
| download | linux-3.10-3516ffb0fef710749daf288c0fe146503e0cf9d4.tar.gz linux-3.10-3516ffb0fef710749daf288c0fe146503e0cf9d4.tar.bz2 linux-3.10-3516ffb0fef710749daf288c0fe146503e0cf9d4.zip | |
[TCP]: Invoke tcp_sendmsg() directly, do not use inet_sendmsg().
As discovered by Evegniy Polyakov, if we try to sendmsg after
a connection reset, we can do incredibly stupid things.
The core issue is that inet_sendmsg() tries to autobind the
socket, but we should never do that for TCP. Instead we should
just go straight into TCP's sendmsg() code which will do all
of the necessary state and pending socket error checks.
TCP's sendpage already directly vectors to tcp_sendpage(), so this
merely brings sendmsg() in line with that.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/af_inet.c | 2 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 1 | ||||
| -rw-r--r-- | net/ipv6/af_inet6.c | 2 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 1 |
5 files changed, 4 insertions, 5 deletions
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 06c08e5740f..e68103475cc 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -831,7 +831,7 @@ const struct proto_ops inet_stream_ops = { .shutdown = inet_shutdown, .setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, - .sendmsg = inet_sendmsg, + .sendmsg = tcp_sendmsg, .recvmsg = sock_common_recvmsg, .mmap = sock_no_mmap, .sendpage = tcp_sendpage, diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index da4c0b6ab79..7e740112b23 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -658,9 +658,10 @@ static inline int select_size(struct sock *sk) return tmp; } -int tcp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg, +int tcp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size) { + struct sock *sk = sock->sk; struct iovec *iov; struct tcp_sock *tp = tcp_sk(sk); struct sk_buff *skb; diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 3f5f7423b95..9c94627c8c7 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2425,7 +2425,6 @@ struct proto tcp_prot = { .shutdown = tcp_shutdown, .setsockopt = tcp_setsockopt, .getsockopt = tcp_getsockopt, - .sendmsg = tcp_sendmsg, .recvmsg = tcp_recvmsg, .backlog_rcv = tcp_v4_do_rcv, .hash = tcp_v4_hash, diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index eed09373a45..b5f96372ad7 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -484,7 +484,7 @@ const struct proto_ops inet6_stream_ops = { .shutdown = inet_shutdown, /* ok */ .setsockopt = sock_common_setsockopt, /* ok */ .getsockopt = sock_common_getsockopt, /* ok */ - .sendmsg = inet_sendmsg, /* ok */ + .sendmsg = tcp_sendmsg, /* ok */ .recvmsg = sock_common_recvmsg, /* ok */ .mmap = sock_no_mmap, .sendpage = tcp_sendpage, diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index f10f3689d67..cbdb7848791 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -2115,7 +2115,6 @@ struct proto tcpv6_prot = { .shutdown = tcp_shutdown, .setsockopt = tcp_setsockopt, .getsockopt = tcp_getsockopt, - .sendmsg = tcp_sendmsg, .recvmsg = tcp_recvmsg, .backlog_rcv = tcp_v6_do_rcv, .hash = tcp_v6_hash, |