Use accept and not accept4.

runtime/bin/socket_linux.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 #if defined(TARGET_OS_LINUX)
 
 #include <errno.h>  // NOLINT
 #include <stdio.h>  // NOLINT
 #include <stdlib.h>  // NOLINT
@@ skipping 402 matching lines @@
       (error == ENOPROTOOPT) || (error == EHOSTDOWN) || (error == ENONET) ||
       (error == EHOSTUNREACH) || (error == EOPNOTSUPP) ||
       (error == ENETUNREACH);
 }
 
 
 intptr_t ServerSocket::Accept(intptr_t fd) {
   intptr_t socket;
   struct sockaddr clientaddr;
   socklen_t addrlen = sizeof(clientaddr);
-  socket = TEMP_FAILURE_RETRY(accept4(
-      fd, &clientaddr, &addrlen, SOCK_NONBLOCK | SOCK_CLOEXEC));
+  socket = TEMP_FAILURE_RETRY(accept(fd, &clientaddr, &addrlen));
   if (socket == -1) {
     if (IsTemporaryAcceptError(errno)) {
       // We need to signal to the caller that this is actually not an
       // error. We got woken up from the poll on the listening socket,
       // but there is no connection ready to be accepted.
       ASSERT(kTemporaryFailure != -1);
       socket = kTemporaryFailure;
     }
+  } else {
+    FDUtils::SetNonBlocking(socket);
+    FDUtils::SetCloseOnExec(socket);
   }
   return socket;
 }
 
 
 void Socket::Close(intptr_t fd) {
   ASSERT(fd >= 0);
   int err = TEMP_FAILURE_RETRY(close(fd));
   if (err != 0) {
     const int kBufferSize = 1024;
@@ skipping 115 matching lines @@
   mreq.gr_interface = interfaceIndex;
   memmove(&mreq.gr_group, &addr->ss, SocketAddress::GetAddrLength(addr));
   return NO_RETRY_EXPECTED(
       setsockopt(fd, proto, MCAST_LEAVE_GROUP, &mreq, sizeof(mreq))) == 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(TARGET_OS_LINUX)