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comparison: security/sandbox/win/src/interception_internal.h
security/sandbox/win/src/interception_internal.h
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| 1 // Copyright (c) 2006-2010 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 // Defines InterceptionManager, the class in charge of setting up interceptions | |
| 6 // for the sandboxed process. For more details see: | |
| 7 // http://dev.chromium.org/developers/design-documents/sandbox . | |
| 8 | |
| 9 #ifndef SANDBOX_SRC_INTERCEPTION_INTERNAL_H_ | |
| 10 #define SANDBOX_SRC_INTERCEPTION_INTERNAL_H_ | |
| 11 | |
| 12 #include "sandbox/win/src/sandbox_types.h" | |
| 13 | |
| 14 namespace sandbox { | |
| 15 | |
| 16 const int kMaxThunkDataBytes = 64; | |
| 17 | |
| 18 enum InterceptorId; | |
| 19 | |
| 20 // The following structures contain variable size fields at the end, and will be | |
| 21 // used to transfer information between two processes. In order to guarantee | |
| 22 // our ability to follow the chain of structures, the alignment should be fixed, | |
| 23 // hence this pragma. | |
| 24 #pragma pack(push, 4) | |
| 25 | |
| 26 // Structures for the shared memory that contains patching information | |
| 27 // for the InterceptionAgent. | |
| 28 // A single interception: | |
| 29 struct FunctionInfo { | |
| 30 size_t record_bytes; // rounded to sizeof(size_t) bytes | |
| 31 InterceptionType type; | |
| 32 InterceptorId id; | |
| 33 const void* interceptor_address; | |
| 34 char function[1]; // placeholder for null terminated name | |
| 35 // char interceptor[] // followed by the interceptor function | |
| 36 }; | |
| 37 | |
| 38 // A single dll: | |
| 39 struct DllPatchInfo { | |
| 40 size_t record_bytes; // rounded to sizeof(size_t) bytes | |
| 41 size_t offset_to_functions; | |
| 42 int num_functions; | |
| 43 bool unload_module; | |
| 44 wchar_t dll_name[1]; // placeholder for null terminated name | |
| 45 // FunctionInfo function_info[] // followed by the functions to intercept | |
| 46 }; | |
| 47 | |
| 48 // All interceptions: | |
| 49 struct SharedMemory { | |
| 50 int num_intercepted_dlls; | |
| 51 void* interceptor_base; | |
| 52 DllPatchInfo dll_list[1]; // placeholder for the list of dlls | |
| 53 }; | |
| 54 | |
| 55 // Dummy single thunk: | |
| 56 struct ThunkData { | |
| 57 char data[kMaxThunkDataBytes]; | |
| 58 }; | |
| 59 | |
| 60 // In-memory representation of the interceptions for a given dll: | |
| 61 struct DllInterceptionData { | |
| 62 size_t data_bytes; | |
| 63 size_t used_bytes; | |
| 64 void* base; | |
| 65 int num_thunks; | |
| 66 #if defined(_WIN64) | |
| 67 int dummy; // Improve alignment. | |
| 68 #endif | |
| 69 ThunkData thunks[1]; | |
| 70 }; | |
| 71 | |
| 72 #pragma pack(pop) | |
| 73 | |
| 74 } // namespace sandbox | |
| 75 | |
| 76 #endif // SANDBOX_SRC_INTERCEPTION_INTERNAL_H_ |
