content/utility/utility_main.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/command_line.h"
   6 #include "base/debug/leak_annotations.h"
   7 #include "base/message_loop/message_loop.h"
   8 #include "base/threading/platform_thread.h"
   9 #include "base/timer/hi_res_timer_manager.h"
  10 #include "content/child/child_process.h"
  11 #include "content/common/sandbox_linux/sandbox_linux.h"
  12 #include "content/public/common/content_switches.h"
  13 #include "content/public/common/main_function_params.h"
  14 #include "content/public/common/sandbox_init.h"
  15 #include "content/utility/utility_thread_impl.h"
  16
  17 #if defined(OS_WIN)
  18 #include "sandbox/win/src/sandbox.h"
  19 #endif
  20
  21 namespace content {
  22
  23 // Mainline routine for running as the utility process.
  24 int UtilityMain(const MainFunctionParams& parameters) {
  25   // The main message loop of the utility process.
  26   base::MessageLoop main_message_loop;
  27   base::PlatformThread::SetName("CrUtilityMain");
  28
  29 #if defined(OS_LINUX)
  30   // Initializes the sandbox before any threads are created.
  31   // TODO(jorgelo): move this after GTK initialization when we enable a strict
  32   // Seccomp-BPF policy.
  33   if (parameters.zygote_child)
  34     LinuxSandbox::InitializeSandbox();
  35 #endif
  36
  37   ChildProcess utility_process;
  38   utility_process.set_main_thread(new UtilityThreadImpl());
  39
  40   base::HighResolutionTimerManager hi_res_timer_manager;
  41
  42 #if defined(OS_WIN)
  43   bool no_sandbox = parameters.command_line.HasSwitch(switches::kNoSandbox);
  44   if (!no_sandbox) {
  45     sandbox::TargetServices* target_services =
  46         parameters.sandbox_info->target_services;
  47     if (!target_services)
  48       return false;
  49 #if defined(ADDRESS_SANITIZER)
  50     // Bind and leak dbghelp.dll before the token is lowered, otherwise
  51     // AddressSanitizer will crash when trying to symbolize a report.
  52     if (!LoadLibraryA("dbghelp.dll"))
  53       return false;
  54 #endif
  55     target_services->LowerToken();
  56   }
  57 #endif
  58
  59   base::MessageLoop::current()->Run();
  60
  61 #if defined(LEAK_SANITIZER)
  62   // Invoke LeakSanitizer before shutting down the utility thread, to avoid
  63   // reporting shutdown-only leaks.
  64   __lsan_do_leak_check();
  65 #endif
  66
  67   return 0;
  68 }
  69
  70 }  // namespace content