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| author | Erik Hugne <erik.hugne@ericsson.com> | 2015-03-09 10:43:42 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-03-09 15:42:19 -0400 |
| commit | 143fe22f50a8be855bba77b5b2dc9dd1a5982b1c (patch) | |
| tree | ff4c064cb226d455ad2273770dec7432a58357ba /net/tipc | |
| parent | 57ad7a0a81f3e9e619540ce9e31d5bd724b59a6e (diff) | |
| download | blackbird-obmc-linux-143fe22f50a8be855bba77b5b2dc9dd1a5982b1c.tar.gz blackbird-obmc-linux-143fe22f50a8be855bba77b5b2dc9dd1a5982b1c.zip | |
tipc: fix inconsistent signal handling regression
Commit 9bbb4ecc6819 ("tipc: standardize recvmsg routine") changed
the sleep/wakeup behaviour for sockets entering recv() or accept().
In this process the order of reporting -EAGAIN/-EINTR was reversed.
This caused problems with wrong errno being reported back if the
timeout expires. The same problem happens if the socket is
nonblocking and recv()/accept() is called when the process have
pending signals. If there is no pending data read or connections to
accept, -EINTR will be returned instead of -EAGAIN.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Reported-by László Benedek <laszlo.benedek@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/socket.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 95c514a1d7d9..934947f038b6 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -1318,12 +1318,12 @@ static int tipc_wait_for_rcvmsg(struct socket *sock, long *timeop) err = 0; if (!skb_queue_empty(&sk->sk_receive_queue)) break; - err = sock_intr_errno(timeo); - if (signal_pending(current)) - break; err = -EAGAIN; if (!timeo) break; + err = sock_intr_errno(timeo); + if (signal_pending(current)) + break; } finish_wait(sk_sleep(sk), &wait); *timeop = timeo; @@ -2026,12 +2026,12 @@ static int tipc_wait_for_accept(struct socket *sock, long timeo) err = -EINVAL; if (sock->state != SS_LISTENING) break; - err = sock_intr_errno(timeo); - if (signal_pending(current)) - break; err = -EAGAIN; if (!timeo) break; + err = sock_intr_errno(timeo); + if (signal_pending(current)) + break; } finish_wait(sk_sleep(sk), &wait); return err; |
