content/browser/renderer_host/render_sandbox_host_linux.h

   1 // Copyright (c) 2012 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 // http://code.google.com/p/chromium/wiki/LinuxSandboxIPC
   6
   7 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_
   8 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_
   9
  10 #include <string>
  11
  12 #include "base/logging.h"
  13 #include "content/common/content_export.h"
  14
  15 template <typename T> struct DefaultSingletonTraits;
  16
  17 namespace content {
  18
  19 // This is a singleton object which handles sandbox requests from the
  20 // renderers.
  21 class CONTENT_EXPORT RenderSandboxHostLinux {
  22  public:
  23   // Returns the singleton instance.
  24   static RenderSandboxHostLinux* GetInstance();
  25
  26   // Get the file descriptor which renderers should be given in order to signal
  27   // crashes to the browser.
  28   int GetRendererSocket() const {
  29     DCHECK(initialized_);
  30     return renderer_socket_;
  31   }
  32   pid_t pid() const {
  33     DCHECK(initialized_);
  34     return pid_;
  35   }
  36   void Init(const std::string& sandbox_path);
  37
  38  private:
  39   friend struct DefaultSingletonTraits<RenderSandboxHostLinux>;
  40   // This object must be constructed on the main thread.
  41   RenderSandboxHostLinux();
  42   ~RenderSandboxHostLinux();
  43
  44   // Whether Init() has been called yet.
  45   bool initialized_;
  46
  47   int renderer_socket_;
  48   int childs_lifeline_fd_;
  49   pid_t pid_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(RenderSandboxHostLinux);
  52 };
  53
  54 }  // namespace content
  55
  56 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_