Add routine to close file descriptors on exec

base/process_util_mac.mm

 // Copyright (c) 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 "base/logging.h"
 #include "base/process_util.h"
 
 #import <Cocoa/Cocoa.h>
 #include <spawn.h>
@@ skipping 13 matching lines @@
   bool retval = true;
 
   char* argv_copy[argv.size() + 1];
   for (size_t i = 0; i < argv.size(); i++) {
     argv_copy[i] = const_cast<char*>(argv[i].c_str());
   }
   argv_copy[argv.size()] = NULL;
 
   // Make sure we don't leak any FDs to the child process by marking all FDs
   // as close-on-exec.
-  int max_files = GetMaxFilesOpenInProcess();
-  for (int i = STDERR_FILENO + 1; i < max_files; i++) {
-    int flags = fcntl(i, F_GETFD);
-    if (flags != -1) {
-      fcntl(i, F_SETFD, flags | FD_CLOEXEC);
-    }
-  }
+  SetAllFDsToCloseOnExec();
 
   posix_spawn_file_actions_t file_actions;
   if (posix_spawn_file_actions_init(&file_actions) != 0) {
     return false;
   }
 
   // Turn fds_to_remap array into a set of dup2 calls.
   for (file_handle_mapping_vector::const_iterator it = fds_to_remap.begin();
        it != fds_to_remap.end();
        ++it) {
@@ skipping 58 matching lines @@
 
 bool CleanupProcesses(const std::wstring& executable_name,
                       int wait_milliseconds,
                       int exit_code,
                       const ProcessFilter* filter) {
   NOTIMPLEMENTED();
   return false;
 }
 
 }  // namespace base