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comparison: security/sandbox/win/src/Wow64.h
security/sandbox/win/src/Wow64.h
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| 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 #ifndef SANDBOX_SRC_WOW64_H__ | |
| 6 #define SANDBOX_SRC_WOW64_H__ | |
| 7 | |
| 8 #include <windows.h> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "sandbox/win/src/sandbox_types.h" | |
| 12 | |
| 13 namespace sandbox { | |
| 14 | |
| 15 class TargetProcess; | |
| 16 | |
| 17 // This class wraps the code needed to interact with the Windows On Windows | |
| 18 // subsystem on 64 bit OSes, from the point of view of interceptions. | |
| 19 class Wow64 { | |
| 20 public: | |
| 21 Wow64(TargetProcess* child, HMODULE ntdll) | |
| 22 : child_(child), ntdll_(ntdll), dll_load_(NULL), continue_load_(NULL) {} | |
| 23 ~Wow64(); | |
| 24 | |
| 25 // Waits for the 32 bit DLL to get loaded on the child process. This function | |
| 26 // will return immediately if not running under WOW, or launch the helper | |
| 27 // process and wait until ntdll is ready. | |
| 28 bool WaitForNtdll(); | |
| 29 | |
| 30 private: | |
| 31 // Runs the WOW helper process, passing the address of a buffer allocated on | |
| 32 // the child (one page). | |
| 33 bool RunWowHelper(void* buffer); | |
| 34 | |
| 35 // This method receives "notifications" whenever a DLL is mapped on the child. | |
| 36 bool DllMapped(); | |
| 37 | |
| 38 // Returns true if ntdll.dll is mapped on the child. | |
| 39 bool NtdllPresent(); | |
| 40 | |
| 41 TargetProcess* child_; // Child process. | |
| 42 HMODULE ntdll_; // ntdll on the parent. | |
| 43 HANDLE dll_load_; // Event that is signaled on dll load. | |
| 44 HANDLE continue_load_; // Event to signal to continue execution on the child. | |
| 45 DISALLOW_IMPLICIT_CONSTRUCTORS(Wow64); | |
| 46 }; | |
| 47 | |
| 48 } // namespace sandbox | |
| 49 | |
| 50 #endif // SANDBOX_SRC_WOW64_H__ |
