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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef IPC_HANDLE_ATTACHMENT_WIN_H_ | 5 #ifndef IPC_HANDLE_ATTACHMENT_WIN_H_ |
6 #define IPC_HANDLE_ATTACHMENT_WIN_H_ | 6 #define IPC_HANDLE_ATTACHMENT_WIN_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include "base/process/process_handle.h" | 10 #include "base/process/process_handle.h" |
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22 struct IPC_EXPORT WireFormat { | 22 struct IPC_EXPORT WireFormat { |
23 // IPC translation requires that classes passed through IPC have a default | 23 // IPC translation requires that classes passed through IPC have a default |
24 // constructor. | 24 // constructor. |
25 WireFormat() | 25 WireFormat() |
26 : handle(0), | 26 : handle(0), |
27 destination_process(0), | 27 destination_process(0), |
28 permissions(HandleWin::INVALID) {} | 28 permissions(HandleWin::INVALID) {} |
29 | 29 |
30 WireFormat(int32_t handle, | 30 WireFormat(int32_t handle, |
31 const base::ProcessId& destination_process, | 31 const base::ProcessId& destination_process, |
32 HandleWin::Permissions permissions, | 32 HandleWin::Permissions permissions) |
33 const AttachmentId& attachment_id) | |
34 : handle(handle), | 33 : handle(handle), |
35 destination_process(destination_process), | 34 destination_process(destination_process), |
36 permissions(permissions), | 35 permissions(permissions) {} |
37 attachment_id(attachment_id) {} | |
38 | 36 |
39 // The HANDLE that is intended for duplication, or the HANDLE that has been | 37 // The HANDLE that is intended for duplication, or the HANDLE that has been |
40 // duplicated, depending on context. | 38 // duplicated, depending on context. |
41 // The type is int32_t instead of HANDLE because HANDLE gets typedefed to | 39 // The type is int32_t instead of HANDLE because HANDLE gets typedefed to |
42 // void*, whose size varies between 32 and 64-bit processes. Using a | 40 // void*, whose size varies between 32 and 64-bit processes. Using a |
43 // int32_t means that 64-bit processes will need to perform both up-casting | 41 // int32_t means that 64-bit processes will need to perform both up-casting |
44 // and down-casting. This is performed using the appropriate Windows APIs. | 42 // and down-casting. This is performed using the appropriate Windows APIs. |
45 // A value of 0 is equivalent to an invalid handle. | 43 // A value of 0 is equivalent to an invalid handle. |
46 int32_t handle; | 44 int32_t handle; |
47 | 45 |
48 // The id of the destination process that the handle is duplicated into. | 46 // The id of the destination process that the handle is duplicated into. |
49 base::ProcessId destination_process; | 47 base::ProcessId destination_process; |
50 | 48 |
51 // The permissions to use when duplicating the handle. | 49 // The permissions to use when duplicating the handle. |
52 HandleWin::Permissions permissions; | 50 HandleWin::Permissions permissions; |
53 | |
54 AttachmentId attachment_id; | |
55 }; | 51 }; |
56 | 52 |
57 // This constructor makes a copy of |handle| and takes ownership of the | 53 // This constructor makes a copy of |handle| and takes ownership of the |
58 // result. Should only be called by the sender of a Chrome IPC message. | 54 // result. Should only be called by the sender of a Chrome IPC message. |
59 HandleAttachmentWin(const HANDLE& handle, HandleWin::Permissions permissions); | 55 HandleAttachmentWin(const HANDLE& handle, HandleWin::Permissions permissions); |
60 | 56 |
61 enum FromWire { | 57 enum FromWire { |
62 FROM_WIRE, | 58 FROM_WIRE, |
63 }; | 59 }; |
64 // This constructor takes ownership of |handle|. Should only be called by the | 60 // This constructor takes ownership of |handle|. Should only be called by the |
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92 // this member to |false|. | 88 // this member to |false|. |
93 // In the destination process, the attachment owns the Mach port until a call | 89 // In the destination process, the attachment owns the Mach port until a call |
94 // to ParamTraits<HandleWin>::Read() takes ownership. | 90 // to ParamTraits<HandleWin>::Read() takes ownership. |
95 bool owns_handle_; | 91 bool owns_handle_; |
96 }; | 92 }; |
97 | 93 |
98 } // namespace internal | 94 } // namespace internal |
99 } // namespace IPC | 95 } // namespace IPC |
100 | 96 |
101 #endif // IPC_HANDLE_ATTACHMENT_WIN_H_ | 97 #endif // IPC_HANDLE_ATTACHMENT_WIN_H_ |
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