Porting of listen_socket, telnet_server to linux

net/base/net_util.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <algorithm>
 #include <unicode/ucnv.h>
 #include <unicode/uidna.h>
 #include <unicode/ulocdata.h>
 #include <unicode/uniset.h>
 #include <unicode/uscript.h>
 #include <unicode/uset.h>
 
-#ifdef OS_WIN
+#include "build/build_config.h"
+
+#if defined(OS_WIN)
 #include <windows.h>
+#elif defined(OS_POSIX)
+#include <sys/socket.h>
+#include <fcntl.h>
 #endif
 
 #include "net/base/net_util.h"
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/scoped_ptr.h"
 #include "base/string_escape.h"
@@ skipping 881 matching lines @@
   int array_size = arraysize(kAllowedFtpPorts);
   for (int i = 0; i < array_size; i++) {
     if (kAllowedFtpPorts[i] == port) {
         return true;
     }
   }
   // Port not explicitly allowed by FTP, so return the default restrictions.
   return IsPortAllowedByDefault(port);
 }
 
+int SetNonBlocking(int fd) {
+#if defined(OS_WIN)
+  unsigned long no_block = 1;
+  return ioctlsocket(fd, FIONBIO, &no_block);
+#elif defined(OS_POSIX)
+  int flags = fcntl(fd, F_GETFL, 0);
+  if (-1 == flags)
+    flags = 0;
+  return fcntl(fd, F_SETFL, 0);
+#endif
+}
+
 }  // namespace net