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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ | 5 #ifndef CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ |
6 #define CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ | 6 #define CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ |
7 | 7 |
8 #include <unistd.h> | 8 #include <unistd.h> |
9 | 9 |
10 #include <string> | 10 #include <string> |
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49 | 49 |
50 // Indexes of FDs in the vector passed to Fork(). | 50 // Indexes of FDs in the vector passed to Fork(). |
51 enum { | 51 enum { |
52 // Used to pass in the descriptor for talking to the Browser | 52 // Used to pass in the descriptor for talking to the Browser |
53 kBrowserFDIndex, | 53 kBrowserFDIndex, |
54 // The PID oracle is used in the protocol for discovering the | 54 // The PID oracle is used in the protocol for discovering the |
55 // child process's real PID from within the SUID sandbox. | 55 // child process's real PID from within the SUID sandbox. |
56 // The child process is required to write to the socket after | 56 // The child process is required to write to the socket after |
57 // successfully forking. | 57 // successfully forking. |
58 kPIDOracleFDIndex, | 58 kPIDOracleFDIndex, |
| 59 kMojoParentFDIndex, |
59 kNumPassedFDs // Number of FDs in the vector passed to Fork(). | 60 kNumPassedFDs // Number of FDs in the vector passed to Fork(). |
60 }; | 61 }; |
61 | 62 |
62 // Delegate forks, returning a -1 on failure. Outside the | 63 // Delegate forks, returning a -1 on failure. Outside the |
63 // suid sandbox, Fork() returns the Linux process ID. | 64 // suid sandbox, Fork() returns the Linux process ID. |
64 // This method is not aware of any potential pid namespaces, so it'll | 65 // This method is not aware of any potential pid namespaces, so it'll |
65 // return a raw pid just like fork() would. | 66 // return a raw pid just like fork() would. |
66 // Delegate is responsible for communicating the channel ID to the | 67 // Delegate is responsible for communicating the channel ID to the |
67 // newly created child process. | 68 // newly created child process. |
68 virtual pid_t Fork(const std::string& process_type, | 69 virtual pid_t Fork(const std::string& process_type, |
69 const std::vector<int>& fds, | 70 const std::vector<int>& fds, |
70 const std::string& channel_id) = 0; | 71 const std::string& channel_id) = 0; |
71 | 72 |
72 // The fork delegate must also assume the role of waiting for its children | 73 // The fork delegate must also assume the role of waiting for its children |
73 // since the caller will not be their parents and cannot do it. |pid| here | 74 // since the caller will not be their parents and cannot do it. |pid| here |
74 // should be a pid that has been returned by the Fork() method. i.e. This | 75 // should be a pid that has been returned by the Fork() method. i.e. This |
75 // method is completely unaware of eventual PID namespaces due to sandboxing. | 76 // method is completely unaware of eventual PID namespaces due to sandboxing. |
76 // |known_dead| indicates that the process is already dead and that a | 77 // |known_dead| indicates that the process is already dead and that a |
77 // blocking wait() should be performed. In this case, GetTerminationStatus() | 78 // blocking wait() should be performed. In this case, GetTerminationStatus() |
78 // will send a SIGKILL to the target process first. | 79 // will send a SIGKILL to the target process first. |
79 virtual bool GetTerminationStatus(pid_t pid, bool known_dead, | 80 virtual bool GetTerminationStatus(pid_t pid, bool known_dead, |
80 base::TerminationStatus* status, | 81 base::TerminationStatus* status, |
81 int* exit_code) = 0; | 82 int* exit_code) = 0; |
82 }; | 83 }; |
83 | 84 |
84 } // namespace content | 85 } // namespace content |
85 | 86 |
86 #endif // CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ | 87 #endif // CONTENT_PUBLIC_COMMON_ZYGOTE_FORK_DELEGATE_LINUX_H_ |
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