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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 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 CONTENT_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ | 5 #ifndef CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ |
6 #define CONTENT_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ | 6 #define CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <unistd.h> | 9 #include <unistd.h> |
10 | 10 |
11 #include <string> | 11 #include <string> |
12 #include <vector> | 12 #include <vector> |
13 | 13 |
14 #include "base/basictypes.h" | 14 namespace content { |
15 | 15 |
16 // The ZygoteForkDelegate allows the Chrome Linux zygote to delegate | 16 // The ZygoteForkDelegate allows the Chrome Linux zygote to delegate |
17 // fork operations to another class that knows how to do some | 17 // fork operations to another class that knows how to do some |
18 // specialized version of fork. | 18 // specialized version of fork. |
19 class ZygoteForkDelegate { | 19 class ZygoteForkDelegate { |
20 public: | 20 public: |
21 // A ZygoteForkDelegate is created during Chrome linux zygote | 21 // A ZygoteForkDelegate is created during Chrome linux zygote |
22 // initialization, and provides "fork()" functionality as an | 22 // initialization, and provides "fork()" functionality as an |
23 // alternative to forking the zygote. A new delegate is passed in | 23 // alternative to forking the zygote. A new delegate is passed in |
24 // as an argument to ZygoteMain(). | 24 // as an argument to ZygoteMain(). |
25 ZygoteForkDelegate() {} | |
26 virtual ~ZygoteForkDelegate() {} | 25 virtual ~ZygoteForkDelegate() {} |
27 | 26 |
28 // Initialization happens in the zygote after it has been | 27 // Initialization happens in the zygote after it has been |
29 // started by ZygoteMain. | 28 // started by ZygoteMain. |
30 virtual void Init(bool sandboxed, | 29 virtual void Init(bool sandboxed, |
31 int browserdesc, | 30 int browserdesc, |
32 int sandboxdesc) = 0; | 31 int sandboxdesc) = 0; |
33 | 32 |
34 // After Init, supply a UMA_HISTOGRAM_ENUMERATION the delegate | 33 // After Init, supply a UMA_HISTOGRAM_ENUMERATION the delegate |
35 // would like to supply on the first fork. | 34 // would like to supply on the first fork. |
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47 // suid sandbox, Fork() returns the Linux process ID. Inside | 46 // suid sandbox, Fork() returns the Linux process ID. Inside |
48 // the sandbox, returns a positive integer, with PID discovery | 47 // the sandbox, returns a positive integer, with PID discovery |
49 // handled by the sandbox. | 48 // handled by the sandbox. |
50 virtual pid_t Fork(const std::vector<int>& fds) = 0; | 49 virtual pid_t Fork(const std::vector<int>& fds) = 0; |
51 | 50 |
52 // After a successful for, signal the child to indicate that | 51 // After a successful for, signal the child to indicate that |
53 // the child's PID has been received. Also communicate the | 52 // the child's PID has been received. Also communicate the |
54 // channel switch as a part of acknowledgement message. | 53 // channel switch as a part of acknowledgement message. |
55 virtual bool AckChild(int fd, const std::string& channel_switch) = 0; | 54 virtual bool AckChild(int fd, const std::string& channel_switch) = 0; |
56 }; | 55 }; |
57 #endif // CONTENT_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ | 56 |
| 57 } // namespace content |
| 58 |
| 59 #endif // CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ |
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