If the type of the socket is SOCK_DGRAM, it shall always be bound to an address if we ever attempt to send datagrams through the socket, whether the attempt succeeds or not.
Signed-off-by: Jinoh Kang jinoh.kang.kr@gmail.com ---
Notes: v4 -> v5: new patch
server/sock.c | 45 ++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 40 insertions(+), 5 deletions(-)
diff --git a/server/sock.c b/server/sock.c index 9170f8fe352..2091384e4a4 100644 --- a/server/sock.c +++ b/server/sock.c @@ -471,6 +471,32 @@ static socklen_t sockaddr_to_unix( const struct WS_sockaddr *wsaddr, int wsaddrl } }
+static socklen_t get_unix_sockaddr_any( union unix_sockaddr *uaddr, int ws_family ) +{ + memset( uaddr, 0, sizeof(*uaddr) ); + switch (ws_family) + { + case WS_AF_INET: + uaddr->in.sin_family = AF_INET; + return sizeof(uaddr->in); + case WS_AF_INET6: + uaddr->in6.sin6_family = AF_INET6; + return sizeof(uaddr->in6); +#ifdef HAS_IPX + case WS_AF_IPX: + uaddr->ipx.sipx_family = AF_IPX; + return sizeof(uaddr->ipx); +#endif +#ifdef HAS_IRDA + case WS_AF_IRDA: + uaddr->irda.sir_family = AF_IRDA; + return sizeof(uaddr->irda); +#endif + default: + return 0; + } +} + /* some events are generated at the same time but must be sent in a particular * order (e.g. CONNECT must be sent before READ) */ static const enum afd_poll_bit event_bitorder[] = @@ -3491,15 +3517,24 @@ DECL_HANDLER(send_socket) if (!sock) return; fd = sock->fd;
- if (sock->type == WS_SOCK_DGRAM) + if (sock->type == WS_SOCK_DGRAM && !sock->bound) { - /* sendto() and sendmsg() implicitly binds a socket */ union unix_sockaddr unix_addr; - socklen_t unix_len = sizeof(unix_addr); + socklen_t unix_len; + int bind_errno = 0; + int unix_fd = get_unix_fd( fd );
- if (!sock->bound && !getsockname( get_unix_fd( fd ), &unix_addr.addr, &unix_len )) + unix_len = get_unix_sockaddr_any( &unix_addr, sock->family ); + if (bind( unix_fd, &unix_addr.addr, unix_len ) < 0) + bind_errno = errno; + + if (getsockname( unix_fd, &unix_addr.addr, &unix_len ) >= 0) + { sock->addr_len = sockaddr_from_unix( &unix_addr, &sock->addr.addr, sizeof(sock->addr) ); - sock->bound = 1; + sock->bound = 1; + } + else if (status == STATUS_PENDING || status == STATUS_DEVICE_NOT_READY) + status = sock_get_ntstatus( bind_errno ? bind_errno : errno ); }
/* If we had a short write and the socket is nonblocking (and the client is