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Diffstat (limited to 'src/VBox/Additions/common/VBoxService/VBoxServiceControl.h')
| -rw-r--r-- | src/VBox/Additions/common/VBoxService/VBoxServiceControl.h | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/src/VBox/Additions/common/VBoxService/VBoxServiceControl.h b/src/VBox/Additions/common/VBoxService/VBoxServiceControl.h new file mode 100644 index 00000000..2b219823 --- /dev/null +++ b/src/VBox/Additions/common/VBoxService/VBoxServiceControl.h @@ -0,0 +1,287 @@ +/* $Id: VBoxServiceControl.h $ */ +/** @file + * VBoxServiceControl.h - Internal guest control definitions. + */ + +/* + * Copyright (C) 2013-2020 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + */ + +#ifndef GA_INCLUDED_SRC_common_VBoxService_VBoxServiceControl_h +#define GA_INCLUDED_SRC_common_VBoxService_VBoxServiceControl_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include <iprt/critsect.h> +#include <iprt/list.h> +#include <iprt/req.h> + +#include <VBox/VBoxGuestLib.h> +#include <VBox/GuestHost/GuestControl.h> +#include <VBox/HostServices/GuestControlSvc.h> + + +/** + * Pipe IDs for handling the guest process poll set. + */ +typedef enum VBOXSERVICECTRLPIPEID +{ + VBOXSERVICECTRLPIPEID_UNKNOWN = 0, + VBOXSERVICECTRLPIPEID_STDIN = 10, + VBOXSERVICECTRLPIPEID_STDIN_WRITABLE = 11, + /** Pipe for reading from guest process' stdout. */ + VBOXSERVICECTRLPIPEID_STDOUT = 40, + /** Pipe for reading from guest process' stderr. */ + VBOXSERVICECTRLPIPEID_STDERR = 50, + /** Notification pipe for waking up the guest process + * control thread. */ + VBOXSERVICECTRLPIPEID_IPC_NOTIFY = 100 +} VBOXSERVICECTRLPIPEID; + +/** + * Structure for one (opened) guest file. + */ +typedef struct VBOXSERVICECTRLFILE +{ + /** Pointer to list archor of following + * list node. + * @todo Would be nice to have a RTListGetAnchor(). */ + PRTLISTANCHOR pAnchor; + /** Node to global guest control file list. */ + /** @todo Use a map later? */ + RTLISTNODE Node; + /** The file name. */ + char *pszName; + /** The file handle on the guest. */ + RTFILE hFile; + /** File handle to identify this file. */ + uint32_t uHandle; + /** Context ID. */ + uint32_t uContextID; + /** RTFILE_O_XXX flags. */ + uint64_t fOpen; +} VBOXSERVICECTRLFILE; +/** Pointer to thread data. */ +typedef VBOXSERVICECTRLFILE *PVBOXSERVICECTRLFILE; + +/** + * Structure for a guest session thread to + * observe/control the forked session instance from + * the VBoxService main executable. + */ +typedef struct VBOXSERVICECTRLSESSIONTHREAD +{ + /** Node to global guest control session list. */ + /** @todo Use a map later? */ + RTLISTNODE Node; + /** The sessions's startup info. */ + PVBGLR3GUESTCTRLSESSIONSTARTUPINFO + pStartupInfo; + /** Critical section for thread-safe use. */ + RTCRITSECT CritSect; + /** The worker thread. */ + RTTHREAD Thread; + /** Process handle for forked child. */ + RTPROCESS hProcess; + /** Shutdown indicator; will be set when the thread + * needs (or is asked) to shutdown. */ + bool volatile fShutdown; + /** Indicator set by the service thread exiting. */ + bool volatile fStopped; + /** Whether the thread was started or not. */ + bool fStarted; +#if 0 /* Pipe IPC not used yet. */ + /** Pollset containing all the pipes. */ + RTPOLLSET hPollSet; + RTPIPE hStdInW; + RTPIPE hStdOutR; + RTPIPE hStdErrR; + struct StdPipe + { + RTHANDLE hChild; + PRTHANDLE phChild; + } StdIn, + StdOut, + StdErr; + /** The notification pipe associated with this guest session. + * This is NIL_RTPIPE for output pipes. */ + RTPIPE hNotificationPipeW; + /** The other end of hNotificationPipeW. */ + RTPIPE hNotificationPipeR; +#endif + /** Pipe for handing the secret key to the session process. */ + RTPIPE hKeyPipe; + /** Secret key. */ + uint8_t abKey[_4K]; +} VBOXSERVICECTRLSESSIONTHREAD; +/** Pointer to thread data. */ +typedef VBOXSERVICECTRLSESSIONTHREAD *PVBOXSERVICECTRLSESSIONTHREAD; + +/** Defines the prefix being used for telling our service executable that we're going + * to spawn a new (Guest Control) user session. */ +#define VBOXSERVICECTRLSESSION_GETOPT_PREFIX "guestsession" + +/** Flag indicating that this session has been spawned from + * the main executable. */ +#define VBOXSERVICECTRLSESSION_FLAG_SPAWN RT_BIT(0) +/** Flag indicating that this session is anonymous, that is, + * it will run start guest processes with the same credentials + * as the main executable. */ +#define VBOXSERVICECTRLSESSION_FLAG_ANONYMOUS RT_BIT(1) +/** Flag indicating that started guest processes will dump their + * stdout output to a separate file on disk. For debugging. */ +#define VBOXSERVICECTRLSESSION_FLAG_DUMPSTDOUT RT_BIT(2) +/** Flag indicating that started guest processes will dump their + * stderr output to a separate file on disk. For debugging. */ +#define VBOXSERVICECTRLSESSION_FLAG_DUMPSTDERR RT_BIT(3) + +/** + * Structure for maintaining a guest session. This also + * contains all started threads (e.g. for guest processes). + * + * This structure can act in two different ways: + * - For legacy guest control handling (protocol version < 2) + * this acts as a per-guest process structure containing all + * the information needed to get a guest process up and running. + * - For newer guest control protocols (>= 2) this structure is + * part of the forked session child, maintaining all guest + * control objects under it. + */ +typedef struct VBOXSERVICECTRLSESSION +{ + /* The session's startup information. */ + VBGLR3GUESTCTRLSESSIONSTARTUPINFO + StartupInfo; + /** List of active guest process threads + * (VBOXSERVICECTRLPROCESS). */ + RTLISTANCHOR lstProcesses; + /** Number of guest processes in the process list. */ + uint32_t cProcesses; + /** List of guest control files (VBOXSERVICECTRLFILE). */ + RTLISTANCHOR lstFiles; + /** Number of guest files in the file list. */ + uint32_t cFiles; + /** The session's critical section. */ + RTCRITSECT CritSect; + /** Internal session flags, not related + * to StartupInfo stuff. + * @sa VBOXSERVICECTRLSESSION_FLAG_* flags. */ + uint32_t fFlags; + /** How many processes do we allow keeping around at a time? */ + uint32_t uProcsMaxKept; +} VBOXSERVICECTRLSESSION; +/** Pointer to guest session. */ +typedef VBOXSERVICECTRLSESSION *PVBOXSERVICECTRLSESSION; + +/** + * Structure for holding data for one (started) guest process. + */ +typedef struct VBOXSERVICECTRLPROCESS +{ + /** Node. */ + RTLISTNODE Node; + /** Process handle. */ + RTPROCESS hProcess; + /** Number of references using this struct. */ + uint32_t cRefs; + /** The worker thread. */ + RTTHREAD Thread; + /** The session this guest process + * is bound to. */ + PVBOXSERVICECTRLSESSION pSession; + /** Shutdown indicator; will be set when the thread + * needs (or is asked) to shutdown. */ + bool volatile fShutdown; + /** Whether the guest process thread was stopped or not. */ + bool volatile fStopped; + /** Whether the guest process thread was started or not. */ + bool fStarted; + /** Context ID. */ + uint32_t uContextID; + /** Critical section for thread-safe use. */ + RTCRITSECT CritSect; + /** Process startup information. */ + PVBGLR3GUESTCTRLPROCSTARTUPINFO + pStartupInfo; + /** The process' PID assigned by the guest OS. */ + uint32_t uPID; + /** The process' request queue to handle requests + * from the outside, e.g. the session. */ + RTREQQUEUE hReqQueue; + /** Our pollset, used for accessing the process' + * std* pipes + the notification pipe. */ + RTPOLLSET hPollSet; + /** StdIn pipe for addressing writes to the + * guest process' stdin.*/ + RTPIPE hPipeStdInW; + /** StdOut pipe for addressing reads from + * guest process' stdout.*/ + RTPIPE hPipeStdOutR; + /** StdOut pipe for addressing reads from + * guest process' stderr.*/ + RTPIPE hPipeStdErrR; + + /** The write end of the notification pipe that is used to poke the thread + * monitoring the process. + * This is NIL_RTPIPE for output pipes. */ + RTPIPE hNotificationPipeW; + /** The other end of hNotificationPipeW, read by vgsvcGstCtrlProcessProcLoop(). */ + RTPIPE hNotificationPipeR; +} VBOXSERVICECTRLPROCESS; +/** Pointer to thread data. */ +typedef VBOXSERVICECTRLPROCESS *PVBOXSERVICECTRLPROCESS; + +RT_C_DECLS_BEGIN + +extern RTLISTANCHOR g_lstControlSessionThreads; +extern VBOXSERVICECTRLSESSION g_Session; +extern uint32_t g_idControlSvcClient; +extern uint64_t g_fControlHostFeatures0; +extern bool g_fControlSupportsOptimizations; + + +/** @name Guest session thread handling. + * @{ */ +extern int VGSvcGstCtrlSessionThreadCreate(PRTLISTANCHOR pList, const PVBGLR3GUESTCTRLSESSIONSTARTUPINFO pSessionStartupInfo, PVBOXSERVICECTRLSESSIONTHREAD *ppSessionThread); +extern int VGSvcGstCtrlSessionThreadDestroy(PVBOXSERVICECTRLSESSIONTHREAD pSession, uint32_t uFlags); +extern int VGSvcGstCtrlSessionThreadDestroyAll(PRTLISTANCHOR pList, uint32_t uFlags); +extern int VGSvcGstCtrlSessionThreadTerminate(PVBOXSERVICECTRLSESSIONTHREAD pSession); +extern RTEXITCODE VGSvcGstCtrlSessionSpawnInit(int argc, char **argv); +/** @} */ +/** @name Per-session functions. + * @{ */ +extern PVBOXSERVICECTRLPROCESS VGSvcGstCtrlSessionRetainProcess(PVBOXSERVICECTRLSESSION pSession, uint32_t uPID); +extern int VGSvcGstCtrlSessionClose(PVBOXSERVICECTRLSESSION pSession); +extern int VGSvcGstCtrlSessionDestroy(PVBOXSERVICECTRLSESSION pSession); +extern int VGSvcGstCtrlSessionInit(PVBOXSERVICECTRLSESSION pSession, uint32_t uFlags); +extern int VGSvcGstCtrlSessionHandler(PVBOXSERVICECTRLSESSION pSession, uint32_t uMsg, PVBGLR3GUESTCTRLCMDCTX pHostCtx, void *pvScratchBuf, size_t cbScratchBuf, volatile bool *pfShutdown); +extern int VGSvcGstCtrlSessionProcessAdd(PVBOXSERVICECTRLSESSION pSession, PVBOXSERVICECTRLPROCESS pProcess); +extern int VGSvcGstCtrlSessionProcessRemove(PVBOXSERVICECTRLSESSION pSession, PVBOXSERVICECTRLPROCESS pProcess); +extern int VGSvcGstCtrlSessionProcessStartAllowed(const PVBOXSERVICECTRLSESSION pSession, bool *pfAllowed); +extern int VGSvcGstCtrlSessionReapProcesses(PVBOXSERVICECTRLSESSION pSession); +/** @} */ +/** @name Per-guest process functions. + * @{ */ +extern int VGSvcGstCtrlProcessFree(PVBOXSERVICECTRLPROCESS pProcess); +extern int VGSvcGstCtrlProcessHandleInput(PVBOXSERVICECTRLPROCESS pProcess, PVBGLR3GUESTCTRLCMDCTX pHostCtx, bool fPendingClose, void *pvBuf, uint32_t cbBuf); +extern int VGSvcGstCtrlProcessHandleOutput(PVBOXSERVICECTRLPROCESS pProcess, PVBGLR3GUESTCTRLCMDCTX pHostCtx, uint32_t uHandle, uint32_t cbToRead, uint32_t uFlags); +extern int VGSvcGstCtrlProcessHandleTerm(PVBOXSERVICECTRLPROCESS pProcess); +extern void VGSvcGstCtrlProcessRelease(PVBOXSERVICECTRLPROCESS pProcess); +extern int VGSvcGstCtrlProcessStart(const PVBOXSERVICECTRLSESSION pSession, const PVBGLR3GUESTCTRLPROCSTARTUPINFO pStartupInfo, uint32_t uContext); +extern int VGSvcGstCtrlProcessStop(PVBOXSERVICECTRLPROCESS pProcess); +extern int VGSvcGstCtrlProcessWait(const PVBOXSERVICECTRLPROCESS pProcess, RTMSINTERVAL msTimeout, int *pRc); +/** @} */ + +RT_C_DECLS_END + +#endif /* !GA_INCLUDED_SRC_common_VBoxService_VBoxServiceControl_h */ + |