[dart:io] Namespaces for file IO

runtime/bin/security_context_linux.cc

 // Copyright (c) 2017, 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.
 
 #if !defined(DART_IO_SECURE_SOCKET_DISABLED)
 
 #include "platform/globals.h"
 #if defined(HOST_OS_LINUX)
 
 #include "bin/security_context.h"
@@ skipping 33 matching lines @@
     return;
   }
 
   // On Linux, we use the compiled-in trusted certs as a last resort. First,
   // we try to find the trusted certs in various standard locations. A good
   // discussion of the complexities of this endeavor can be found here:
   //
   // https://www.happyassassin.net/2015/01/12/a-note-about-ssltls-trusted-certificate-stores-and-platforms/
   const char* bundle = "/etc/pki/tls/certs/ca-bundle.crt";
   const char* cachedir = "/etc/ssl/certs";
-  if (File::Exists(bundle)) {
+  if (File::Exists(NULL, bundle)) {
     LoadRootCertFile(bundle);
     return;
   }
 
-  if (Directory::Exists(cachedir) == Directory::EXISTS) {
+  if (Directory::Exists(NULL, cachedir) == Directory::EXISTS) {
     LoadRootCertCache(cachedir);
     return;
   }
 
   // Fall back on the compiled-in certs if the standard locations don't exist,
   // or we aren't on Linux.
   if (SSL_LOG_STATUS) {
     Log::Print("Trusting compiled-in roots\n");
   }
   AddCompiledInCerts();
 }
 
 void SSLCertContext::RegisterCallbacks(SSL* ssl) {
   // No callbacks to register for implementations using BoringSSL's built-in
   // verification mechanism.
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // defined(HOST_OS_LINUX)
 
 #endif  // !defined(DART_IO_SECURE_SOCKET_DISABLED)