| 1 | /*++ |
| 2 | |
| 3 | Copyright (c) Microsoft. All rights reserved. |
| 4 | |
| 5 | Module Name: |
| 6 | |
| 7 | Dmesg.h |
| 8 | |
| 9 | Abstract: |
| 10 | |
| 11 | This file contains declarations used to collect dmesg output |
| 12 | |
| 13 | --*/ |
| 14 | |
| 15 | #pragma once |
| 16 | |
| 17 | #include "relay.hpp" |
| 18 | #include "HandleIO.h" |
| 19 | #include "RingBuffer.h" |
| 20 | |
| 21 | class DmesgCollector |
| 22 | { |
| 23 | public: |
| 24 | DmesgCollector() = delete; |
| 25 | ~DmesgCollector(); |
| 26 | |
| 27 | std::wstring EarlyConsoleName() const |
| 28 | { |
| 29 | return m_earlyConsoleName; |
| 30 | } |
| 31 | |
| 32 | std::wstring VirtioConsoleName() const |
| 33 | { |
| 34 | return m_virtioConsoleName; |
| 35 | } |
| 36 | |
| 37 | static std::shared_ptr<DmesgCollector> Create( |
| 38 | GUID VmId, |
| 39 | HANDLE ExitEvent, |
| 40 | bool EnableTelemetry, |
| 41 | bool EnableDebugConsole, |
| 42 | const std::wstring& Com1PipeName, |
| 43 | bool EnableEarlyBootConsole, |
| 44 | wil::unique_handle&& OutputHandle); |
| 45 | |
| 46 | private: |
| 47 | enum InputSource |
| 48 | { |
| 49 | DmesgCollectorEarlyConsole, |
| 50 | DmesgCollectorConsole |
| 51 | }; |
| 52 | |
| 53 | DmesgCollector(GUID VmId, HANDLE ExitEvent, bool EnableTelemetry, bool EnableDebugConsole, const std::wstring& Com1PipeName, wil::unique_handle&& OutputHandle = {}); |
| 54 | |
| 55 | void Start(bool EnableEarlyBootConsole); |
| 56 | |
| 57 | void Run(); |
| 58 | |
| 59 | static std::pair<std::wstring, wil::unique_hfile> CreateConsolePipe(); |
| 60 | |
| 61 | void ProcessInput(InputSource Source, const gsl::span<char>& Input); |
| 62 | |
| 63 | std::wstring m_com1PipeName; |
| 64 | std::wstring m_earlyConsoleName; |
| 65 | std::wstring m_virtioConsoleName; |
| 66 | HANDLE m_vmExitEvent; |
| 67 | wil::unique_event m_threadExitEvent{wil::EventOptions::ManualReset}; |
| 68 | wil::unique_hfile m_com1Pipe; |
| 69 | wil::unique_handle m_outputHandle; |
| 70 | wil::unique_hfile m_earlyConsolePipe; |
| 71 | wil::unique_hfile m_virtioConsolePipe; |
| 72 | GUID m_runtimeId{}; |
| 73 | RingBuffer m_dmesgBuffer{LX_RELAY_BUFFER_SIZE}; |
| 74 | RingBuffer m_dmesgEarlyBuffer{LX_RELAY_BUFFER_SIZE}; |
| 75 | bool m_debugConsole; |
| 76 | bool m_telemetry; |
| 77 | bool m_earlyConsoleTransition = false; |
| 78 | bool m_pipeServer = false; |
| 79 | |
| 80 | std::thread m_thread; |
| 81 | |
| 82 | wsl::windows::common::io::WriteHandle* m_outputWrite = nullptr; |
| 83 | wsl::windows::common::io::WriteNamedPipe* m_com1Write = nullptr; |
| 84 | }; |