VBoxServiceControlProcess.cpp@ 61439

Last change on this file since 61439 was 60622, checked in by vboxsync, 9 years ago
Guest Control: Added proper handling for (VBoxService) toolbox exit codes, resolving various copyto/copyfrom bugs.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 82.5 KB

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1	/* $Id: VBoxServiceControlProcess.cpp 60622 2016-04-21 13:00:20Z vboxsync $ */
2	/** @file
3	* VBoxServiceControlThread - Guest process handling.
4	*/
5
6	/*
7	* Copyright (C) 2012-2016 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#include <iprt/asm.h>
23	#include <iprt/assert.h>
24	#include <iprt/env.h>
25	#include <iprt/file.h>
26	#include <iprt/getopt.h>
27	#include <iprt/handle.h>
28	#include <iprt/mem.h>
29	#include <iprt/path.h>
30	#include <iprt/pipe.h>
31	#include <iprt/poll.h>
32	#include <iprt/process.h>
33	#include <iprt/semaphore.h>
34	#include <iprt/string.h>
35	#include <iprt/thread.h>
36
37	#include <VBox/VBoxGuestLib.h>
38	#include <VBox/HostServices/GuestControlSvc.h>
39
40	#include "VBoxServiceInternal.h"
41	#include "VBoxServiceControl.h"
42	#include "VBoxServiceToolBox.h"
43
44	using namespace guestControl;
45
46
47	/*********************************************************************************************************************************
48	* Internal Functions *
49	*********************************************************************************************************************************/
50	static int vgsvcGstCtrlProcessAssignPID(PVBOXSERVICECTRLPROCESS pThread, uint32_t uPID);
51	static int vgsvcGstCtrlProcessLock(PVBOXSERVICECTRLPROCESS pProcess);
52	static int vgsvcGstCtrlProcessRequest(PVBOXSERVICECTRLPROCESS pProcess, const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
53	PFNRT pfnFunction, unsigned cArgs, ...);
54	static int vgsvcGstCtrlProcessSetupPipe(const char pszHowTo, int fd, PRTHANDLE ph, PRTHANDLE pph,
55	PRTPIPE phPipe);
56	static int vgsvcGstCtrlProcessUnlock(PVBOXSERVICECTRLPROCESS pProcess);
57	/* Request handlers. */
58	static DECLCALLBACK(int) vgsvcGstCtrlProcessOnInput(PVBOXSERVICECTRLPROCESS pThis, const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
59	bool fPendingClose, void *pvBuf, uint32_t cbBuf);
60	static DECLCALLBACK(int) vgsvcGstCtrlProcessOnOutput(PVBOXSERVICECTRLPROCESS pThis, const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
61	uint32_t uHandle, uint32_t cbToRead, uint32_t uFlags);
62	static DECLCALLBACK(int) vgsvcGstCtrlProcessOnTerm(PVBOXSERVICECTRLPROCESS pThis);
63
64
65	/**
66	* Initialies the passed in thread data structure with the parameters given.
67	*
68	* @return IPRT status code.
69	* @param pProcess Process to initialize.
70	* @param pSession Guest session the process is bound to.
71	* @param pStartupInfo Startup information.
72	* @param u32ContextID The context ID bound to this request / command.
73	*/
74	static int vgsvcGstCtrlProcessInit(PVBOXSERVICECTRLPROCESS pProcess,
75	const PVBOXSERVICECTRLSESSION pSession,
76	const PVBOXSERVICECTRLPROCSTARTUPINFO pStartupInfo,
77	uint32_t u32ContextID)
78	{
79	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
80	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
81	AssertPtrReturn(pStartupInfo, VERR_INVALID_POINTER);
82
83	/* General stuff. */
84	pProcess->hProcess = NIL_RTPROCESS;
85	pProcess->pSession = pSession;
86	pProcess->Node.pPrev = NULL;
87	pProcess->Node.pNext = NULL;
88
89	pProcess->fShutdown = false;
90	pProcess->fStarted = false;
91	pProcess->fStopped = false;
92
93	pProcess->uPID = 0; /* Don't have a PID yet. */
94	pProcess->cRefs = 0;
95	/*
96	* Use the initial context ID we got for starting
97	* the process to report back its status with the
98	* same context ID.
99	*/
100	pProcess->uContextID = u32ContextID;
101	/*
102	* Note: pProcess->ClientID will be assigned when thread is started;
103	* every guest process has its own client ID to detect crashes on
104	* a per-guest-process level.
105	*/
106
107	int rc = RTCritSectInit(&pProcess->CritSect);
108	if (RT_FAILURE(rc))
109	return rc;
110
111	pProcess->hPollSet = NIL_RTPOLLSET;
112	pProcess->hPipeStdInW = NIL_RTPIPE;
113	pProcess->hPipeStdOutR = NIL_RTPIPE;
114	pProcess->hPipeStdErrR = NIL_RTPIPE;
115	pProcess->hNotificationPipeW = NIL_RTPIPE;
116	pProcess->hNotificationPipeR = NIL_RTPIPE;
117
118	rc = RTReqQueueCreate(&pProcess->hReqQueue);
119	AssertReleaseRC(rc);
120
121	/* Copy over startup info. */
122	memcpy(&pProcess->StartupInfo, pStartupInfo, sizeof(VBOXSERVICECTRLPROCSTARTUPINFO));
123
124	/* Adjust timeout value. */
125	if ( pProcess->StartupInfo.uTimeLimitMS == UINT32_MAX
126	\|\| pProcess->StartupInfo.uTimeLimitMS == 0)
127	pProcess->StartupInfo.uTimeLimitMS = RT_INDEFINITE_WAIT;
128
129	if (RT_FAILURE(rc)) /* Clean up on failure. */
130	VGSvcGstCtrlProcessFree(pProcess);
131	return rc;
132	}
133
134
135	/**
136	* Frees a guest process. On success, pProcess will be
137	* free'd and thus won't be available anymore.
138	*
139	* @return IPRT status code.
140	* @param pProcess Guest process to free.
141	*/
142	int VGSvcGstCtrlProcessFree(PVBOXSERVICECTRLPROCESS pProcess)
143	{
144	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
145
146	VGSvcVerbose(3, "[PID %RU32]: Freeing (cRefs=%RU32)...\n", pProcess->uPID, pProcess->cRefs);
147	Assert(pProcess->cRefs == 0);
148
149	/*
150	* Destroy other thread data.
151	*/
152	if (RTCritSectIsInitialized(&pProcess->CritSect))
153	RTCritSectDelete(&pProcess->CritSect);
154
155	int rc = RTReqQueueDestroy(pProcess->hReqQueue);
156	AssertRC(rc);
157
158	/*
159	* Remove from list.
160	*/
161	AssertPtr(pProcess->pSession);
162	rc = VGSvcGstCtrlSessionProcessRemove(pProcess->pSession, pProcess);
163	AssertRC(rc);
164
165	/*
166	* Destroy thread structure as final step.
167	*/
168	RTMemFree(pProcess);
169	pProcess = NULL;
170
171	return VINF_SUCCESS;
172	}
173
174
175	/**
176	* Signals a guest process thread that we want it to shut down in
177	* a gentle way.
178	*
179	* @return IPRT status code.
180	* @param pProcess Process to stop.
181	*/
182	int VGSvcGstCtrlProcessStop(PVBOXSERVICECTRLPROCESS pProcess)
183	{
184	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
185
186	VGSvcVerbose(3, "[PID %RU32]: Stopping ...\n", pProcess->uPID);
187
188	/* Do not set pThread->fShutdown or other stuff here!
189	* The guest thread loop will clean up itself. */
190
191	return VGSvcGstCtrlProcessHandleTerm(pProcess);
192	}
193
194
195	/**
196	* Releases a previously acquired guest process (decreases the refcount).
197	*
198	* @param pProcess Process to unlock.
199	*/
200	void VGSvcGstCtrlProcessRelease(PVBOXSERVICECTRLPROCESS pProcess)
201	{
202	AssertPtrReturnVoid(pProcess);
203
204	bool fShutdown = false;
205
206	int rc = RTCritSectEnter(&pProcess->CritSect);
207	if (RT_SUCCESS(rc))
208	{
209	Assert(pProcess->cRefs);
210	pProcess->cRefs--;
211	fShutdown = pProcess->fStopped; /* Has the process' thread been stopped? */
212
213	rc = RTCritSectLeave(&pProcess->CritSect);
214	AssertRC(rc);
215	}
216
217	if (fShutdown)
218	VGSvcGstCtrlProcessFree(pProcess);
219	}
220
221
222	/**
223	* Wait for a guest process thread to shut down.
224	*
225	* @return IPRT status code.
226	* @param pProcess Process to wait shutting down for.
227	* @param msTimeout Timeout in ms to wait for shutdown.
228	* @param prc Where to store the thread's return code.
229	* Optional.
230	*/
231	int VGSvcGstCtrlProcessWait(const PVBOXSERVICECTRLPROCESS pProcess, RTMSINTERVAL msTimeout, int *prc)
232	{
233	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
234	AssertPtrNullReturn(prc, VERR_INVALID_POINTER);
235
236	int rc = vgsvcGstCtrlProcessLock(pProcess);
237	if (RT_SUCCESS(rc))
238	{
239	VGSvcVerbose(2, "[PID %RU32]: Waiting for shutdown (%RU32ms) ...\n", pProcess->uPID, msTimeout);
240
241	AssertMsgReturn(pProcess->fStarted,
242	("Tried to wait on guest process=%p (PID %RU32) which has not been started yet\n",
243	pProcess, pProcess->uPID), VERR_INVALID_PARAMETER);
244
245	/* Guest process already has been stopped, no need to wait. */
246	if (!pProcess->fStopped)
247	{
248	/* Unlock process before waiting. */
249	rc = vgsvcGstCtrlProcessUnlock(pProcess);
250	AssertRC(rc);
251
252	/* Do the actual waiting. */
253	int rcThread;
254	Assert(pProcess->Thread != NIL_RTTHREAD);
255	rc = RTThreadWait(pProcess->Thread, msTimeout, &rcThread);
256	if (RT_SUCCESS(rc))
257	{
258	VGSvcVerbose(3, "[PID %RU32]: Thread shutdown complete, thread rc=%Rrc\n", pProcess->uPID, rcThread);
259	if (prc)
260	*prc = rcThread;
261	}
262	else
263	VGSvcError("[PID %RU32]: Waiting for shutting down thread returned error rc=%Rrc\n", pProcess->uPID, rc);
264	}
265	else
266	{
267	VGSvcVerbose(3, "[PID %RU32]: Thread already shut down, no waiting needed\n", pProcess->uPID);
268
269	int rc2 = vgsvcGstCtrlProcessUnlock(pProcess);
270	AssertRC(rc2);
271	}
272	}
273
274	VGSvcVerbose(3, "[PID %RU32]: Waiting resulted in rc=%Rrc\n", pProcess->uPID, rc);
275	return rc;
276	}
277
278
279	/**
280	* Closes the stdin pipe of a guest process.
281	*
282	* @return IPRT status code.
283	* @param pProcess The process which input pipe we close.
284	* @param phStdInW The standard input pipe handle.
285	*/
286	static int vgsvcGstCtrlProcessPollsetCloseInput(PVBOXSERVICECTRLPROCESS pProcess, PRTPIPE phStdInW)
287	{
288	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
289	AssertPtrReturn(phStdInW, VERR_INVALID_POINTER);
290
291	int rc = RTPollSetRemove(pProcess->hPollSet, VBOXSERVICECTRLPIPEID_STDIN);
292	if (rc != VERR_POLL_HANDLE_ID_NOT_FOUND)
293	AssertRC(rc);
294
295	if (*phStdInW != NIL_RTPIPE)
296	{
297	rc = RTPipeClose(*phStdInW);
298	AssertRC(rc);
299	*phStdInW = NIL_RTPIPE;
300	}
301
302	return rc;
303	}
304
305
306	/**
307	* Names a poll handle ID.
308	*
309	* @returns Pointer to read-only string.
310	* @param idPollHnd What to name.
311	*/
312	static const char *vgsvcGstCtrlProcessPollHandleToString(uint32_t idPollHnd)
313	{
314	switch (idPollHnd)
315	{
316	case VBOXSERVICECTRLPIPEID_UNKNOWN:
317	return "unknown";
318	case VBOXSERVICECTRLPIPEID_STDIN:
319	return "stdin";
320	case VBOXSERVICECTRLPIPEID_STDIN_WRITABLE:
321	return "stdin_writable";
322	case VBOXSERVICECTRLPIPEID_STDOUT:
323	return "stdout";
324	case VBOXSERVICECTRLPIPEID_STDERR:
325	return "stderr";
326	case VBOXSERVICECTRLPIPEID_IPC_NOTIFY:
327	return "ipc_notify";
328	default:
329	return "unknown";
330	}
331	}
332
333
334	/**
335	* Handle an error event on standard input.
336	*
337	* @return IPRT status code.
338	* @param pProcess Process to handle pollset for.
339	* @param fPollEvt The event mask returned by RTPollNoResume.
340	* @param phStdInW The standard input pipe handle.
341	*/
342	static int vgsvcGstCtrlProcessPollsetOnInput(PVBOXSERVICECTRLPROCESS pProcess, uint32_t fPollEvt, PRTPIPE phStdInW)
343	{
344	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
345
346	NOREF(fPollEvt);
347
348	return vgsvcGstCtrlProcessPollsetCloseInput(pProcess, phStdInW);
349	}
350
351
352	/**
353	* Handle pending output data or error on standard out or standard error.
354	*
355	* @returns IPRT status code from client send.
356	* @param pProcess Process to handle pollset for.
357	* @param fPollEvt The event mask returned by RTPollNoResume.
358	* @param phPipeR The pipe handle.
359	* @param idPollHnd The pipe ID to handle.
360	*/
361	static int vgsvcGstCtrlProcessHandleOutputError(PVBOXSERVICECTRLPROCESS pProcess,
362	uint32_t fPollEvt, PRTPIPE phPipeR, uint32_t idPollHnd)
363	{
364	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
365
366	if (!phPipeR)
367	return VINF_SUCCESS;
368
369	#ifdef DEBUG
370	VGSvcVerbose(4, "[PID %RU32]: Output error: idPollHnd=%s, fPollEvt=0x%x\n",
371	pProcess->uPID, vgsvcGstCtrlProcessPollHandleToString(idPollHnd), fPollEvt);
372	#endif
373
374	/* Remove pipe from poll set. */
375	int rc2 = RTPollSetRemove(pProcess->hPollSet, idPollHnd);
376	AssertMsg(RT_SUCCESS(rc2) \|\| rc2 == VERR_POLL_HANDLE_ID_NOT_FOUND, ("%Rrc\n", rc2));
377
378	bool fClosePipe = true; /* By default close the pipe. */
379
380	/* Check if there's remaining data to read from the pipe. */
381	if (*phPipeR != NIL_RTPIPE)
382	{
383	size_t cbReadable;
384	rc2 = RTPipeQueryReadable(*phPipeR, &cbReadable);
385	if ( RT_SUCCESS(rc2)
386	&& cbReadable)
387	{
388	#ifdef DEBUG
389	VGSvcVerbose(3, "[PID %RU32]: idPollHnd=%s has %zu bytes left, vetoing close\n",
390	pProcess->uPID, vgsvcGstCtrlProcessPollHandleToString(idPollHnd), cbReadable);
391	#endif
392	/* Veto closing the pipe yet because there's still stuff to read
393	* from the pipe. This can happen on UNIX-y systems where on
394	* error/hangup there still can be data to be read out. */
395	fClosePipe = false;
396	}
397	}
398	#ifdef DEBUG
399	else
400	VGSvcVerbose(3, "[PID %RU32]: idPollHnd=%s will be closed\n",
401	pProcess->uPID, vgsvcGstCtrlProcessPollHandleToString(idPollHnd));
402	#endif
403
404	if ( *phPipeR != NIL_RTPIPE
405	&& fClosePipe)
406	{
407	rc2 = RTPipeClose(*phPipeR);
408	AssertRC(rc2);
409	*phPipeR = NIL_RTPIPE;
410	}
411
412	return VINF_SUCCESS;
413	}
414
415
416	/**
417	* Handle pending output data or error on standard out or standard error.
418	*
419	* @returns IPRT status code from client send.
420	* @param pProcess Process to handle pollset for.
421	* @param fPollEvt The event mask returned by RTPollNoResume.
422	* @param phPipeR The pipe handle.
423	* @param idPollHnd The pipe ID to handle.
424	*
425	*/
426	static int vgsvcGstCtrlProcessPollsetOnOutput(PVBOXSERVICECTRLPROCESS pProcess,
427	uint32_t fPollEvt, PRTPIPE phPipeR, uint32_t idPollHnd)
428	{
429	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
430
431	#ifdef DEBUG
432	VGSvcVerbose(4, "[PID %RU32]: Output event phPipeR=%p, idPollHnd=%s, fPollEvt=0x%x\n",
433	pProcess->uPID, phPipeR, vgsvcGstCtrlProcessPollHandleToString(idPollHnd), fPollEvt);
434	#endif
435
436	if (!phPipeR)
437	return VINF_SUCCESS;
438
439	int rc = VINF_SUCCESS;
440
441	#ifdef DEBUG
442	if (*phPipeR != NIL_RTPIPE)
443	{
444	size_t cbReadable;
445	rc = RTPipeQueryReadable(*phPipeR, &cbReadable);
446	if ( RT_SUCCESS(rc)
447	&& cbReadable)
448	{
449	VGSvcVerbose(4, "[PID %RU32]: Output event cbReadable=%zu\n", pProcess->uPID, cbReadable);
450	}
451	}
452	#endif
453
454	#if 0
455	/* Push output to the host. */
456	if (fPollEvt & RTPOLL_EVT_READ)
457	{
458	size_t cbRead = 0;
459	uint8_t byData[_64K];
460	rc = RTPipeRead(*phPipeR, byData, sizeof(byData), &cbRead);
461	VGSvcVerbose(4, "VGSvcGstCtrlProcessHandleOutputEvent cbRead=%u, rc=%Rrc\n", cbRead, rc);
462
463	/* Make sure we go another poll round in case there was too much data
464	for the buffer to hold. */
465	fPollEvt &= RTPOLL_EVT_ERROR;
466	}
467	#endif
468
469	if (fPollEvt & RTPOLL_EVT_ERROR)
470	rc = vgsvcGstCtrlProcessHandleOutputError(pProcess, fPollEvt, phPipeR, idPollHnd);
471	return rc;
472	}
473
474
475	/**
476	* Execution loop which runs in a dedicated per-started-process thread and
477	* handles all pipe input/output and signalling stuff.
478	*
479	* @return IPRT status code.
480	* @param pProcess The guest process to handle.
481	*/
482	static int vgsvcGstCtrlProcessProcLoop(PVBOXSERVICECTRLPROCESS pProcess)
483	{
484	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
485
486	int rc;
487	int rc2;
488	uint64_t const uMsStart = RTTimeMilliTS();
489	RTPROCSTATUS ProcessStatus = { 254, RTPROCEXITREASON_ABEND };
490	bool fProcessAlive = true;
491	bool fProcessTimedOut = false;
492	uint64_t MsProcessKilled = UINT64_MAX;
493	RTMSINTERVAL const cMsPollBase = pProcess->hPipeStdInW != NIL_RTPIPE
494	? 100 /* Need to poll for input. */
495	: 1000; /* Need only poll for process exit and aborts. */
496	RTMSINTERVAL cMsPollCur = 0;
497
498	/*
499	* Assign PID to thread data.
500	* Also check if there already was a thread with the same PID and shut it down -- otherwise
501	* the first (stale) entry will be found and we get really weird results!
502	*/
503	rc = vgsvcGstCtrlProcessAssignPID(pProcess, pProcess->hProcess /* Opaque PID handle */);
504	if (RT_FAILURE(rc))
505	{
506	VGSvcError("Unable to assign PID=%u, to new thread, rc=%Rrc\n", pProcess->hProcess, rc);
507	return rc;
508	}
509
510	/*
511	* Before entering the loop, tell the host that we've started the guest
512	* and that it's now OK to send input to the process.
513	*/
514	VGSvcVerbose(2, "[PID %RU32]: Process '%s' started, CID=%u, User=%s, cMsTimeout=%RU32\n",
515	pProcess->uPID, pProcess->StartupInfo.szCmd, pProcess->uContextID,
516	pProcess->StartupInfo.szUser, pProcess->StartupInfo.uTimeLimitMS);
517	VBGLR3GUESTCTRLCMDCTX ctxStart = { pProcess->uClientID, pProcess->uContextID };
518	rc = VbglR3GuestCtrlProcCbStatus(&ctxStart,
519	pProcess->uPID, PROC_STS_STARTED, 0 /* u32Flags */,
520	NULL /* pvData /, 0 / cbData */);
521	if (rc == VERR_INTERRUPTED)
522	rc = VINF_SUCCESS; /* SIGCHLD send by quick childs! */
523	if (RT_FAILURE(rc))
524	VGSvcError("[PID %RU32]: Error reporting starting status to host, rc=%Rrc\n", pProcess->uPID, rc);
525
526	/*
527	* Process input, output, the test pipe and client requests.
528	*/
529	while ( RT_SUCCESS(rc)
530	&& RT_UNLIKELY(!pProcess->fShutdown))
531	{
532	/*
533	* Wait/Process all pending events.
534	*/
535	uint32_t idPollHnd;
536	uint32_t fPollEvt;
537	rc2 = RTPollNoResume(pProcess->hPollSet, cMsPollCur, &fPollEvt, &idPollHnd);
538	if (pProcess->fShutdown)
539	continue;
540
541	cMsPollCur = 0; /* No rest until we've checked everything. */
542
543	if (RT_SUCCESS(rc2))
544	{
545	switch (idPollHnd)
546	{
547	case VBOXSERVICECTRLPIPEID_STDIN:
548	rc = vgsvcGstCtrlProcessPollsetOnInput(pProcess, fPollEvt, &pProcess->hPipeStdInW);
549	break;
550
551	case VBOXSERVICECTRLPIPEID_STDOUT:
552	rc = vgsvcGstCtrlProcessPollsetOnOutput(pProcess, fPollEvt, &pProcess->hPipeStdOutR, idPollHnd);
553	break;
554
555	case VBOXSERVICECTRLPIPEID_STDERR:
556	rc = vgsvcGstCtrlProcessPollsetOnOutput(pProcess, fPollEvt, &pProcess->hPipeStdOutR, idPollHnd);
557	break;
558
559	case VBOXSERVICECTRLPIPEID_IPC_NOTIFY:
560	#ifdef DEBUG_andy
561	VGSvcVerbose(4, "[PID %RU32]: IPC notify\n", pProcess->uPID);
562	#endif
563	rc2 = vgsvcGstCtrlProcessLock(pProcess);
564	if (RT_SUCCESS(rc2))
565	{
566	/* Drain the notification pipe. */
567	uint8_t abBuf[8];
568	size_t cbIgnore;
569	rc2 = RTPipeRead(pProcess->hNotificationPipeR, abBuf, sizeof(abBuf), &cbIgnore);
570	if (RT_FAILURE(rc2))
571	VGSvcError("Draining IPC notification pipe failed with rc=%Rrc\n", rc2);
572
573	/* Process all pending requests. */
574	VGSvcVerbose(4, "[PID %RU32]: Processing pending requests ...\n", pProcess->uPID);
575	Assert(pProcess->hReqQueue != NIL_RTREQQUEUE);
576	rc2 = RTReqQueueProcess(pProcess->hReqQueue,
577	0 /* Only process all pending requests, don't wait for new ones */);
578	if ( RT_FAILURE(rc2)
579	&& rc2 != VERR_TIMEOUT)
580	VGSvcError("Processing requests failed with with rc=%Rrc\n", rc2);
581
582	int rc3 = vgsvcGstCtrlProcessUnlock(pProcess);
583	AssertRC(rc3);
584	#ifdef DEBUG
585	VGSvcVerbose(4, "[PID %RU32]: Processing pending requests done, rc=%Rrc\n", pProcess->uPID, rc2);
586	#endif
587	}
588
589	break;
590
591	default:
592	AssertMsgFailed(("Unknown idPollHnd=%RU32\n", idPollHnd));
593	break;
594	}
595
596	if (RT_FAILURE(rc) \|\| rc == VINF_EOF)
597	break; /* Abort command, or client dead or something. */
598	}
599	#if 0
600	VGSvcVerbose(4, "[PID %RU32]: Polling done, pollRc=%Rrc, pollCnt=%RU32, idPollHnd=%s, rc=%Rrc, fProcessAlive=%RTbool, fShutdown=%RTbool\n",
601	pProcess->uPID, rc2, RTPollSetGetCount(hPollSet), vgsvcGstCtrlProcessPollHandleToString(idPollHnd), rc, fProcessAlive, pProcess->fShutdown);
602	VGSvcVerbose(4, "[PID %RU32]: stdOut=%s, stdErrR=%s\n",
603	pProcess->uPID,
604	*phStdOutR == NIL_RTPIPE ? "closed" : "open",
605	*phStdErrR == NIL_RTPIPE ? "closed" : "open");
606	#endif
607	if (RT_UNLIKELY(pProcess->fShutdown))
608	break; /* We were asked to shutdown. */
609
610	/*
611	* Check for process death.
612	*/
613	if (fProcessAlive)
614	{
615	rc2 = RTProcWaitNoResume(pProcess->hProcess, RTPROCWAIT_FLAGS_NOBLOCK, &ProcessStatus);
616	if (RT_SUCCESS_NP(rc2))
617	{
618	fProcessAlive = false;
619	/* Note: Don't bail out here yet. First check in the next block below
620	* if all needed pipe outputs have been consumed. */
621	}
622	else
623	{
624	if (RT_UNLIKELY(rc2 == VERR_INTERRUPTED))
625	continue;
626	if (RT_UNLIKELY(rc2 == VERR_PROCESS_NOT_FOUND))
627	{
628	fProcessAlive = false;
629	ProcessStatus.enmReason = RTPROCEXITREASON_ABEND;
630	ProcessStatus.iStatus = 255;
631	AssertFailed();
632	}
633	else
634	AssertMsg(rc2 == VERR_PROCESS_RUNNING, ("%Rrc\n", rc2));
635	}
636	}
637
638	/*
639	* If the process has terminated and all output has been consumed,
640	* we should be heading out.
641	*/
642	if (!fProcessAlive)
643	{
644	if ( fProcessTimedOut
645	\|\| ( pProcess->hPipeStdOutR == NIL_RTPIPE
646	&& pProcess->hPipeStdErrR == NIL_RTPIPE)
647	)
648	{
649	VGSvcVerbose(3, "[PID %RU32]: RTProcWaitNoResume=%Rrc\n", pProcess->uPID, rc2);
650	break;
651	}
652	}
653
654	/*
655	* Check for timed out, killing the process.
656	*/
657	uint32_t cMilliesLeft = RT_INDEFINITE_WAIT;
658	if ( pProcess->StartupInfo.uTimeLimitMS != RT_INDEFINITE_WAIT
659	&& pProcess->StartupInfo.uTimeLimitMS != 0)
660	{
661	uint64_t u64Now = RTTimeMilliTS();
662	uint64_t cMsElapsed = u64Now - uMsStart;
663	if (cMsElapsed >= pProcess->StartupInfo.uTimeLimitMS)
664	{
665	fProcessTimedOut = true;
666	if ( MsProcessKilled == UINT64_MAX
667	\|\| u64Now - MsProcessKilled > 1000)
668	{
669	if (u64Now - MsProcessKilled > 20601000)
670	break; /* Give up after 20 mins. */
671
672	VGSvcVerbose(3, "[PID %RU32]: Timed out (%RU64ms elapsed > %RU32ms timeout), killing ...\n",
673	pProcess->uPID, cMsElapsed, pProcess->StartupInfo.uTimeLimitMS);
674
675	rc2 = RTProcTerminate(pProcess->hProcess);
676	VGSvcVerbose(3, "[PID %RU32]: Killing process resulted in rc=%Rrc\n",
677	pProcess->uPID, rc2);
678	MsProcessKilled = u64Now;
679	continue;
680	}
681	cMilliesLeft = 10000;
682	}
683	else
684	cMilliesLeft = pProcess->StartupInfo.uTimeLimitMS - (uint32_t)cMsElapsed;
685	}
686
687	/* Reset the polling interval since we've done all pending work. */
688	cMsPollCur = fProcessAlive
689	? cMsPollBase
690	: RT_MS_1MIN;
691	if (cMilliesLeft < cMsPollCur)
692	cMsPollCur = cMilliesLeft;
693	}
694
695	VGSvcVerbose(3, "[PID %RU32]: Loop ended: rc=%Rrc, fShutdown=%RTbool, fProcessAlive=%RTbool, fProcessTimedOut=%RTbool, MsProcessKilled=%RU64\n",
696	pProcess->uPID, rc, pProcess->fShutdown, fProcessAlive, fProcessTimedOut, MsProcessKilled, MsProcessKilled);
697	VGSvcVerbose(3, "[PID %RU32]: phStdOutR=%s, phStdErrR=%s\n",
698	pProcess->uPID,
699	pProcess->hPipeStdOutR == NIL_RTPIPE ? "closed" : "open",
700	pProcess->hPipeStdErrR == NIL_RTPIPE ? "closed" : "open");
701
702	/* Signal that this thread is in progress of shutting down. */
703	ASMAtomicWriteBool(&pProcess->fShutdown, true);
704
705	/*
706	* Try killing the process if it's still alive at this point.
707	*/
708	if (fProcessAlive)
709	{
710	if (MsProcessKilled == UINT64_MAX)
711	{
712	VGSvcVerbose(2, "[PID %RU32]: Is still alive and not killed yet\n", pProcess->uPID);
713
714	MsProcessKilled = RTTimeMilliTS();
715	rc2 = RTProcTerminate(pProcess->hProcess);
716	if (rc2 == VERR_NOT_FOUND)
717	{
718	fProcessAlive = false;
719	}
720	else if (RT_FAILURE(rc2))
721	VGSvcError("[PID %RU32]: Killing process failed with rc=%Rrc\n", pProcess->uPID, rc2);
722	RTThreadSleep(500);
723	}
724
725	for (int i = 0; i < 10 && fProcessAlive; i++)
726	{
727	VGSvcVerbose(4, "[PID %RU32]: Kill attempt %d/10: Waiting to exit ...\n", pProcess->uPID, i + 1);
728	rc2 = RTProcWait(pProcess->hProcess, RTPROCWAIT_FLAGS_NOBLOCK, &ProcessStatus);
729	if (RT_SUCCESS(rc2))
730	{
731	VGSvcVerbose(4, "[PID %RU32]: Kill attempt %d/10: Exited\n", pProcess->uPID, i + 1);
732	fProcessAlive = false;
733	break;
734	}
735	if (i >= 5)
736	{
737	VGSvcVerbose(4, "[PID %RU32]: Kill attempt %d/10: Trying to terminate ...\n", pProcess->uPID, i + 1);
738	rc2 = RTProcTerminate(pProcess->hProcess);
739	if ( RT_FAILURE(rc)
740	&& rc2 != VERR_NOT_FOUND)
741	VGSvcError("PID %RU32]: Killing process failed with rc=%Rrc\n",
742	pProcess->uPID, rc2);
743	}
744	RTThreadSleep(i >= 5 ? 2000 : 500);
745	}
746
747	if (fProcessAlive)
748	VGSvcError("[PID %RU32]: Could not be killed\n", pProcess->uPID);
749	}
750
751	/*
752	* Shutdown procedure:
753	* - Set the pProcess->fShutdown indicator to let others know we're
754	* not accepting any new requests anymore.
755	* - After setting the indicator, try to process all outstanding
756	* requests to make sure they're getting delivered.
757	*
758	* Note: After removing the process from the session's list it's not
759	* even possible for the session anymore to control what's
760	* happening to this thread, so be careful and don't mess it up.
761	*/
762
763	rc2 = vgsvcGstCtrlProcessLock(pProcess);
764	if (RT_SUCCESS(rc2))
765	{
766	VGSvcVerbose(3, "[PID %RU32]: Processing outstanding requests ...\n", pProcess->uPID);
767
768	/* Process all pending requests (but don't wait for new ones). */
769	Assert(pProcess->hReqQueue != NIL_RTREQQUEUE);
770	rc2 = RTReqQueueProcess(pProcess->hReqQueue, 0 /* No timeout */);
771	if ( RT_FAILURE(rc2)
772	&& rc2 != VERR_TIMEOUT)
773	VGSvcError("[PID %RU32]: Processing outstanding requests failed with with rc=%Rrc\n", pProcess->uPID, rc2);
774
775	VGSvcVerbose(3, "[PID %RU32]: Processing outstanding requests done, rc=%Rrc\n", pProcess->uPID, rc2);
776
777	rc2 = vgsvcGstCtrlProcessUnlock(pProcess);
778	AssertRC(rc2);
779	}
780
781	/*
782	* If we don't have a client problem (RT_FAILURE(rc)) we'll reply to the
783	* clients exec packet now.
784	*/
785	if (RT_SUCCESS(rc))
786	{
787	uint32_t uStatus = PROC_STS_UNDEFINED;
788	uint32_t fFlags = 0;
789
790	if ( fProcessTimedOut && !fProcessAlive && MsProcessKilled != UINT64_MAX)
791	{
792	VGSvcVerbose(3, "[PID %RU32]: Timed out and got killed\n", pProcess->uPID);
793	uStatus = PROC_STS_TOK;
794	}
795	else if (fProcessTimedOut && fProcessAlive && MsProcessKilled != UINT64_MAX)
796	{
797	VGSvcVerbose(3, "[PID %RU32]: Timed out and did not get killed\n", pProcess->uPID);
798	uStatus = PROC_STS_TOA;
799	}
800	else if (pProcess->fShutdown && (fProcessAlive \|\| MsProcessKilled != UINT64_MAX))
801	{
802	VGSvcVerbose(3, "[PID %RU32]: Got terminated because system/service is about to shutdown\n", pProcess->uPID);
803	uStatus = PROC_STS_DWN; /* Service is stopping, process was killed. */
804	fFlags = pProcess->StartupInfo.uFlags; /* Return handed-in execution flags back to the host. */
805	}
806	else if (fProcessAlive)
807	VGSvcError("[PID %RU32]: Is alive when it should not!\n", pProcess->uPID);
808	else if (MsProcessKilled != UINT64_MAX)
809	VGSvcError("[PID %RU32]: Has been killed when it should not!\n", pProcess->uPID);
810	else if (ProcessStatus.enmReason == RTPROCEXITREASON_NORMAL)
811	{
812	VGSvcVerbose(3, "[PID %RU32]: Ended with RTPROCEXITREASON_NORMAL (Exit code: %d)\n",
813	pProcess->uPID, ProcessStatus.iStatus);
814	uStatus = PROC_STS_TEN;
815	fFlags = ProcessStatus.iStatus;
816	}
817	else if (ProcessStatus.enmReason == RTPROCEXITREASON_SIGNAL)
818	{
819	VGSvcVerbose(3, "[PID %RU32]: Ended with RTPROCEXITREASON_SIGNAL (Signal: %u)\n",
820	pProcess->uPID, ProcessStatus.iStatus);
821	uStatus = PROC_STS_TES;
822	fFlags = ProcessStatus.iStatus;
823	}
824	else if (ProcessStatus.enmReason == RTPROCEXITREASON_ABEND)
825	{
826	/* ProcessStatus.iStatus will be undefined. */
827	VGSvcVerbose(3, "[PID %RU32]: Ended with RTPROCEXITREASON_ABEND\n", pProcess->uPID);
828	uStatus = PROC_STS_TEA;
829	fFlags = ProcessStatus.iStatus;
830	}
831	else
832	VGSvcVerbose(1, "[PID %RU32]: Handling process status %u not implemented\n", pProcess->uPID, ProcessStatus.enmReason);
833	VGSvcVerbose(2, "[PID %RU32]: Ended, ClientID=%u, CID=%u, Status=%u, Flags=0x%x\n",
834	pProcess->uPID, pProcess->uClientID, pProcess->uContextID, uStatus, fFlags);
835
836	VBGLR3GUESTCTRLCMDCTX ctxEnd = { pProcess->uClientID, pProcess->uContextID };
837	rc2 = VbglR3GuestCtrlProcCbStatus(&ctxEnd, pProcess->uPID, uStatus, fFlags, NULL /* pvData /, 0 / cbData */);
838	if ( RT_FAILURE(rc2)
839	&& rc2 == VERR_NOT_FOUND)
840	VGSvcError("[PID %RU32]: Error reporting final status to host; rc=%Rrc\n", pProcess->uPID, rc2);
841	}
842
843	VGSvcVerbose(3, "[PID %RU32]: Process loop returned with rc=%Rrc\n", pProcess->uPID, rc);
844	return rc;
845	}
846
847
848	/**
849	* Initializes a pipe's handle and pipe object.
850	*
851	* @return IPRT status code.
852	* @param ph The pipe's handle to initialize.
853	* @param phPipe The pipe's object to initialize.
854	*/
855	static int vgsvcGstCtrlProcessInitPipe(PRTHANDLE ph, PRTPIPE phPipe)
856	{
857	AssertPtrReturn(ph, VERR_INVALID_PARAMETER);
858	AssertPtrReturn(phPipe, VERR_INVALID_PARAMETER);
859
860	ph->enmType = RTHANDLETYPE_PIPE;
861	ph->u.hPipe = NIL_RTPIPE;
862	*phPipe = NIL_RTPIPE;
863
864	return VINF_SUCCESS;
865	}
866
867
868	/**
869	* Sets up the redirection / pipe / nothing for one of the standard handles.
870	*
871	* @returns IPRT status code. No client replies made.
872	* @param pszHowTo How to set up this standard handle.
873	* @param fd Which standard handle it is (0 == stdin, 1 ==
874	* stdout, 2 == stderr).
875	* @param ph The generic handle that @a pph may be set
876	* pointing to. Always set.
877	* @param pph Pointer to the RTProcCreateExec argument.
878	* Always set.
879	* @param phPipe Where to return the end of the pipe that we
880	* should service.
881	*/
882	static int vgsvcGstCtrlProcessSetupPipe(const char pszHowTo, int fd, PRTHANDLE ph, PRTHANDLE pph, PRTPIPE phPipe)
883	{
884	AssertPtrReturn(ph, VERR_INVALID_POINTER);
885	AssertPtrReturn(pph, VERR_INVALID_POINTER);
886	AssertPtrReturn(phPipe, VERR_INVALID_POINTER);
887
888	int rc;
889
890	ph->enmType = RTHANDLETYPE_PIPE;
891	ph->u.hPipe = NIL_RTPIPE;
892	*pph = NULL;
893	*phPipe = NIL_RTPIPE;
894
895	if (!strcmp(pszHowTo, "\|"))
896	{
897	/*
898	* Setup a pipe for forwarding to/from the client.
899	* The ph union struct will be filled with a pipe read/write handle
900	* to represent the "other" end to phPipe.
901	*/
902	if (fd == 0) /* stdin? */
903	{
904	/* Connect a wrtie pipe specified by phPipe to stdin. */
905	rc = RTPipeCreate(&ph->u.hPipe, phPipe, RTPIPE_C_INHERIT_READ);
906	}
907	else /* stdout or stderr. */
908	{
909	/* Connect a read pipe specified by phPipe to stdout or stderr. */
910	rc = RTPipeCreate(phPipe, &ph->u.hPipe, RTPIPE_C_INHERIT_WRITE);
911	}
912
913	if (RT_FAILURE(rc))
914	return rc;
915
916	ph->enmType = RTHANDLETYPE_PIPE;
917	*pph = ph;
918	}
919	else if (!strcmp(pszHowTo, "/dev/null"))
920	{
921	/*
922	* Redirect to/from /dev/null.
923	*/
924	RTFILE hFile;
925	rc = RTFileOpenBitBucket(&hFile, fd == 0 ? RTFILE_O_READ : RTFILE_O_WRITE);
926	if (RT_FAILURE(rc))
927	return rc;
928
929	ph->enmType = RTHANDLETYPE_FILE;
930	ph->u.hFile = hFile;
931	*pph = ph;
932	}
933	else /* Add other piping stuff here. */
934	rc = VINF_SUCCESS; /* Same as parent (us). */
935
936	return rc;
937	}
938
939
940	/**
941	* Expands a file name / path to its real content. This only works on Windows
942	* for now (e.g. translating "%TEMP%\foo.exe" to "C:\Windows\Temp" when starting
943	* with system / administrative rights).
944	*
945	* @return IPRT status code.
946	* @param pszPath Path to resolve.
947	* @param pszExpanded Pointer to string to store the resolved path in.
948	* @param cbExpanded Size (in bytes) of string to store the resolved path.
949	*/
950	static int vgsvcGstCtrlProcessMakeFullPath(const char pszPath, char pszExpanded, size_t cbExpanded)
951	{
952	int rc = VINF_SUCCESS;
953	/** @todo r=bird: This feature shall be made optional, i.e. require a
954	* flag to be passed down. Further, it shall work on the environment
955	* block of the new process (i.e. include env changes passed down from
956	* the caller). I would also suggest using the unix variable expansion
957	* syntax, not the DOS one.
958	*
959	* Since this currently not available on non-windows guests, I suggest
960	* we disable it until such a time as it is implemented correctly. */
961	#ifdef RT_OS_WINDOWS
962	if (!ExpandEnvironmentStrings(pszPath, pszExpanded, (DWORD)cbExpanded))
963	rc = RTErrConvertFromWin32(GetLastError());
964	#else
965	/* No expansion for non-Windows yet. */
966	rc = RTStrCopy(pszExpanded, cbExpanded, pszPath);
967	#endif
968	#ifdef DEBUG
969	VGSvcVerbose(3, "vgsvcGstCtrlProcessMakeFullPath: %s -> %s\n", pszPath, pszExpanded);
970	#endif
971	return rc;
972	}
973
974
975	/**
976	* Resolves the full path of a specified executable name. This function also
977	* resolves internal VBoxService tools to its appropriate executable path + name if
978	* VBOXSERVICE_NAME is specified as pszFileName.
979	*
980	* @return IPRT status code.
981	* @param pszFileName File name to resolve.
982	* @param pszResolved Pointer to a string where the resolved file name will be stored.
983	* @param cbResolved Size (in bytes) of resolved file name string.
984	*/
985	static int vgsvcGstCtrlProcessResolveExecutable(const char pszFileName, char pszResolved, size_t cbResolved)
986	{
987	AssertPtrReturn(pszFileName, VERR_INVALID_POINTER);
988	AssertPtrReturn(pszResolved, VERR_INVALID_POINTER);
989	AssertReturn(cbResolved, VERR_INVALID_PARAMETER);
990
991	int rc = VINF_SUCCESS;
992
993	char szPathToResolve[RTPATH_MAX];
994	if ( (g_pszProgName && (RTStrICmp(pszFileName, g_pszProgName) == 0))
995	\|\| !RTStrICmp(pszFileName, VBOXSERVICE_NAME))
996	{
997	/* Resolve executable name of this process. */
998	if (!RTProcGetExecutablePath(szPathToResolve, sizeof(szPathToResolve)))
999	rc = VERR_FILE_NOT_FOUND;
1000	}
1001	else
1002	{
1003	/* Take the raw argument to resolve. */
1004	rc = RTStrCopy(szPathToResolve, sizeof(szPathToResolve), pszFileName);
1005	}
1006
1007	if (RT_SUCCESS(rc))
1008	{
1009	rc = vgsvcGstCtrlProcessMakeFullPath(szPathToResolve, pszResolved, cbResolved);
1010	if (RT_SUCCESS(rc))
1011	VGSvcVerbose(3, "Looked up executable: %s -> %s\n", pszFileName, pszResolved);
1012	}
1013
1014	if (RT_FAILURE(rc))
1015	VGSvcError("Failed to lookup executable '%s' with rc=%Rrc\n", pszFileName, rc);
1016	return rc;
1017	}
1018
1019
1020	/**
1021	* Constructs the argv command line by resolving environment variables
1022	* and relative paths.
1023	*
1024	* @return IPRT status code.
1025	* @param pszArgv0 First argument (argv0), either original or modified version. Optional.
1026	* @param papszArgs Original argv command line from the host, starting at argv[1].
1027	* @param fFlags The process creation flags pass to us from the host.
1028	* @param ppapszArgv Pointer to a pointer with the new argv command line.
1029	* Needs to be freed with RTGetOptArgvFree.
1030	*/
1031	static int vgsvcGstCtrlProcessAllocateArgv(const char pszArgv0, const char const *papszArgs, uint32_t fFlags,
1032	char ***ppapszArgv)
1033	{
1034	AssertPtrReturn(ppapszArgv, VERR_INVALID_POINTER);
1035
1036	VGSvcVerbose(3, "VGSvcGstCtrlProcessPrepareArgv: pszArgv0=%p, papszArgs=%p, fFlags=%#x, ppapszArgv=%p\n",
1037	pszArgv0, papszArgs, fFlags, ppapszArgv);
1038
1039	int rc = VINF_SUCCESS;
1040	uint32_t cArgs;
1041	for (cArgs = 0; papszArgs[cArgs]; cArgs++)
1042	{
1043	if (cArgs >= UINT32_MAX - 2)
1044	return VERR_BUFFER_OVERFLOW;
1045	}
1046
1047	/* Allocate new argv vector (adding + 2 for argv0 + termination). */
1048	size_t cbSize = (cArgs + 2) * sizeof(char *);
1049	char papszNewArgv = (char )RTMemAlloc(cbSize);
1050	if (!papszNewArgv)
1051	return VERR_NO_MEMORY;
1052
1053	#ifdef DEBUG
1054	VGSvcVerbose(3, "VGSvcGstCtrlProcessAllocateArgv: cbSize=%RU32, cArgs=%RU32\n", cbSize, cArgs);
1055	#endif
1056
1057	/* HACK ALERT! Since we still don't allow the user to really specify the first
1058	argument separately from the executable image, we have to fudge
1059	a little in the unquoted argument case to deal with executables
1060	containing spaces. */
1061	/** @todo Fix the stupid host/guest protocol so the user can do this for us! */
1062	if ( !(fFlags & EXECUTEPROCESSFLAG_UNQUOTED_ARGS)
1063	\|\| !strpbrk(pszArgv0, " \t\n\r")
1064	\|\| pszArgv0[0] == '"')
1065	rc = RTStrDupEx(&papszNewArgv[0], pszArgv0);
1066	else
1067	{
1068	size_t cchArgv0 = strlen(pszArgv0);
1069	rc = RTStrAllocEx(&papszNewArgv[0], 1 + cchArgv0 + 1 + 1);
1070	if (RT_SUCCESS(rc))
1071	{
1072	char *pszDst = papszNewArgv[0];
1073	*pszDst++ = '"';
1074	memcpy(pszDst, pszArgv0, cchArgv0);
1075	pszDst += cchArgv0;
1076	*pszDst++ = '"';
1077	*pszDst = '\0';
1078	}
1079	}
1080	if (RT_SUCCESS(rc))
1081	{
1082	size_t i;
1083	for (i = 0; i < cArgs; i++)
1084	{
1085	char *pszArg;
1086	#if 0 /* Arguments expansion -- untested. */
1087	if (fFlags & EXECUTEPROCESSFLAG_EXPAND_ARGUMENTS)
1088	{
1089	/** @todo r=bird: If you want this, we need a generic implementation, preferably in RTEnv or somewhere like that. The marking
1090	* up of the variables must be the same on all platforms. */
1091	/* According to MSDN the limit on older Windows version is 32K, whereas
1092	* Vista+ there are no limits anymore. We still stick to 4K. */
1093	char szExpanded[_4K];
1094	# ifdef RT_OS_WINDOWS
1095	if (!ExpandEnvironmentStrings(papszArgs[i], szExpanded, sizeof(szExpanded)))
1096	rc = RTErrConvertFromWin32(GetLastError());
1097	# else
1098	/* No expansion for non-Windows yet. */
1099	rc = RTStrCopy(papszArgs[i], sizeof(szExpanded), szExpanded);
1100	# endif
1101	if (RT_SUCCESS(rc))
1102	rc = RTStrDupEx(&pszArg, szExpanded);
1103	}
1104	else
1105	#endif
1106	rc = RTStrDupEx(&pszArg, papszArgs[i]);
1107
1108	if (RT_FAILURE(rc))
1109	break;
1110
1111	papszNewArgv[i + 1] = pszArg;
1112	}
1113
1114	if (RT_SUCCESS(rc))
1115	{
1116	/* Terminate array. */
1117	papszNewArgv[cArgs + 1] = NULL;
1118
1119	*ppapszArgv = papszNewArgv;
1120	return VINF_SUCCESS;
1121	}
1122
1123	/* Failed, bail out. */
1124	for (; i > 0; i--)
1125	RTStrFree(papszNewArgv[i]);
1126	}
1127	RTMemFree(papszNewArgv);
1128	return rc;
1129	}
1130
1131
1132	/**
1133	* Assigns a valid PID to a guest control thread and also checks if there already was
1134	* another (stale) guest process which was using that PID before and destroys it.
1135	*
1136	* @return IPRT status code.
1137	* @param pProcess Process to assign PID to.
1138	* @param uPID PID to assign to the specified guest control execution thread.
1139	*/
1140	static int vgsvcGstCtrlProcessAssignPID(PVBOXSERVICECTRLPROCESS pProcess, uint32_t uPID)
1141	{
1142	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
1143	AssertReturn(uPID, VERR_INVALID_PARAMETER);
1144
1145	AssertPtr(pProcess->pSession);
1146	int rc = RTCritSectEnter(&pProcess->pSession->CritSect);
1147	if (RT_SUCCESS(rc))
1148	{
1149	/* Search old threads using the desired PID and shut them down completely -- it's
1150	* not used anymore. */
1151	PVBOXSERVICECTRLPROCESS pProcessCur;
1152	bool fTryAgain;
1153	do
1154	{
1155	fTryAgain = false;
1156	RTListForEach(&pProcess->pSession->lstProcesses, pProcessCur, VBOXSERVICECTRLPROCESS, Node)
1157	{
1158	if (pProcessCur->uPID == uPID)
1159	{
1160	Assert(pProcessCur != pProcess); /* can't happen */
1161	uint32_t uTriedPID = uPID;
1162	uPID += 391939;
1163	VGSvcVerbose(2, "PID %RU32 was used before (process %p), trying again with %RU32 ...\n",
1164	uTriedPID, pProcessCur, uPID);
1165	fTryAgain = true;
1166	break;
1167	}
1168	}
1169	} while (fTryAgain);
1170
1171	/* Assign PID to current thread. */
1172	pProcess->uPID = uPID;
1173
1174	rc = RTCritSectLeave(&pProcess->pSession->CritSect);
1175	AssertRC(rc);
1176	}
1177
1178	return rc;
1179	}
1180
1181
1182	static void vgsvcGstCtrlProcessFreeArgv(char **papszArgv)
1183	{
1184	if (papszArgv)
1185	{
1186	size_t i = 0;
1187	while (papszArgv[i])
1188	RTStrFree(papszArgv[i++]);
1189	RTMemFree(papszArgv);
1190	}
1191	}
1192
1193
1194	/**
1195	* Helper function to create/start a process on the guest.
1196	*
1197	* @return IPRT status code.
1198	* @param pszExec Full qualified path of process to start (without arguments).
1199	* @param papszArgs Pointer to array of command line arguments.
1200	* @param hEnv Handle to environment block to use.
1201	* @param fFlags Process execution flags.
1202	* @param phStdIn Handle for the process' stdin pipe.
1203	* @param phStdOut Handle for the process' stdout pipe.
1204	* @param phStdErr Handle for the process' stderr pipe.
1205	* @param pszAsUser User name (account) to start the process under.
1206	* @param pszPassword Password of the specified user.
1207	* @param pszDomain Domain to use for authentication.
1208	* @param phProcess Pointer which will receive the process handle after
1209	* successful process start.
1210	*/
1211	static int vgsvcGstCtrlProcessCreateProcess(const char pszExec, const char const *papszArgs, RTENV hEnv, uint32_t fFlags,
1212	PCRTHANDLE phStdIn, PCRTHANDLE phStdOut, PCRTHANDLE phStdErr,
1213	const char pszAsUser, const char pszPassword, const char *pszDomain,
1214	PRTPROCESS phProcess)
1215	{
1216	AssertPtrReturn(pszExec, VERR_INVALID_PARAMETER);
1217	AssertPtrReturn(papszArgs, VERR_INVALID_PARAMETER);
1218	/* phStdIn is optional. */
1219	/* phStdOut is optional. */
1220	/* phStdErr is optional. */
1221	/* pszPassword is optional. */
1222	/* pszDomain is optional. */
1223	AssertPtrReturn(phProcess, VERR_INVALID_PARAMETER);
1224
1225	int rc = VINF_SUCCESS;
1226	char szExecExp[RTPATH_MAX];
1227
1228	#ifdef DEBUG
1229	/* Never log this in release mode! */
1230	VGSvcVerbose(4, "pszUser=%s, pszPassword=%s, pszDomain=%s\n", pszAsUser, pszPassword, pszDomain);
1231	#endif
1232
1233	#ifdef RT_OS_WINDOWS
1234	/*
1235	* If sysprep should be executed do this in the context of VBoxService, which
1236	* (usually, if started by SCM) has administrator rights. Because of that a UI
1237	* won't be shown (doesn't have a desktop).
1238	*/
1239	if (!RTStrICmp(pszExec, "sysprep"))
1240	{
1241	/* Use a predefined sysprep path as default. */
1242	char szSysprepCmd[RTPATH_MAX] = "C:\\sysprep\\sysprep.exe";
1243	/** @todo Check digital signature of file above before executing it? */
1244
1245	/*
1246	* On Windows Vista (and up) sysprep is located in "system32\\Sysprep\\sysprep.exe",
1247	* so detect the OS and use a different path.
1248	*/
1249	OSVERSIONINFOEX OSInfoEx;
1250	RT_ZERO(OSInfoEx);
1251	OSInfoEx.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
1252	BOOL fRet = GetVersionEx((LPOSVERSIONINFO) &OSInfoEx);
1253	if ( fRet
1254	&& OSInfoEx.dwPlatformId == VER_PLATFORM_WIN32_NT
1255	&& OSInfoEx.dwMajorVersion >= 6 /* Vista or later */)
1256	{
1257	rc = RTEnvGetEx(RTENV_DEFAULT, "windir", szSysprepCmd, sizeof(szSysprepCmd), NULL);
1258	#ifndef RT_ARCH_AMD64
1259	/* Don't execute 64-bit sysprep from a 32-bit service host! */
1260	char szSysWow64[RTPATH_MAX];
1261	if (RTStrPrintf(szSysWow64, sizeof(szSysWow64), "%s", szSysprepCmd))
1262	{
1263	rc = RTPathAppend(szSysWow64, sizeof(szSysWow64), "SysWow64");
1264	AssertRC(rc);
1265	}
1266	if ( RT_SUCCESS(rc)
1267	&& RTPathExists(szSysWow64))
1268	VGSvcVerbose(0, "Warning: This service is 32-bit; could not execute sysprep on 64-bit OS!\n");
1269	#endif
1270	if (RT_SUCCESS(rc))
1271	rc = RTPathAppend(szSysprepCmd, sizeof(szSysprepCmd), "system32\\Sysprep\\sysprep.exe");
1272	if (RT_SUCCESS(rc))
1273	RTPathChangeToDosSlashes(szSysprepCmd, false /* No forcing necessary */);
1274
1275	if (RT_FAILURE(rc))
1276	VGSvcError("Failed to detect sysrep location, rc=%Rrc\n", rc);
1277	}
1278	else if (!fRet)
1279	VGSvcError("Failed to retrieve OS information, last error=%ld\n", GetLastError());
1280
1281	VGSvcVerbose(3, "Sysprep executable is: %s\n", szSysprepCmd);
1282
1283	if (RT_SUCCESS(rc))
1284	{
1285	char **papszArgsExp;
1286	rc = vgsvcGstCtrlProcessAllocateArgv(szSysprepCmd /* argv0 */, papszArgs, fFlags, &papszArgsExp);
1287	if (RT_SUCCESS(rc))
1288	{
1289	/* As we don't specify credentials for the sysprep process, it will
1290	* run under behalf of the account VBoxService was started under, most
1291	* likely local system. */
1292	rc = RTProcCreateEx(szSysprepCmd, papszArgsExp, hEnv, 0 /* fFlags */,
1293	phStdIn, phStdOut, phStdErr, NULL /* pszAsUser */,
1294	NULL /* pszPassword */, phProcess);
1295	vgsvcGstCtrlProcessFreeArgv(papszArgsExp);
1296	}
1297	}
1298
1299	if (RT_FAILURE(rc))
1300	VGSvcVerbose(3, "Starting sysprep returned rc=%Rrc\n", rc);
1301
1302	return rc;
1303	}
1304	#endif /* RT_OS_WINDOWS */
1305
1306	#ifdef VBOX_WITH_VBOXSERVICE_TOOLBOX
1307	if (RTStrStr(pszExec, "vbox_") == pszExec)
1308	{
1309	/* We want to use the internal toolbox (all internal
1310	* tools are starting with "vbox_" (e.g. "vbox_cat"). */
1311	rc = vgsvcGstCtrlProcessResolveExecutable(VBOXSERVICE_NAME, szExecExp, sizeof(szExecExp));
1312	}
1313	else
1314	{
1315	#endif
1316	/*
1317	* Do the environment variables expansion on executable and arguments.
1318	*/
1319	rc = vgsvcGstCtrlProcessResolveExecutable(pszExec, szExecExp, sizeof(szExecExp));
1320	#ifdef VBOX_WITH_VBOXSERVICE_TOOLBOX
1321	}
1322	#endif
1323	if (RT_SUCCESS(rc))
1324	{
1325	char **papszArgsExp;
1326	/** @todo r-bird: pszExec != argv[0]! When are you going to get that?!? How many
1327	* times does this need to be pointed out? HOST/GUEST INTERFACE IS MISDESIGNED! */
1328	rc = vgsvcGstCtrlProcessAllocateArgv(pszExec /* Always use the unmodified executable name as argv0. */,
1329	papszArgs /* Append the rest of the argument vector (if any). */,
1330	fFlags, &papszArgsExp);
1331	if (RT_FAILURE(rc))
1332	{
1333	/* Don't print any arguments -- may contain passwords or other sensible data! */
1334	VGSvcError("Could not prepare arguments, rc=%Rrc\n", rc);
1335	}
1336	else
1337	{
1338	uint32_t uProcFlags = 0;
1339	if (fFlags)
1340	{
1341	if (fFlags & EXECUTEPROCESSFLAG_HIDDEN)
1342	uProcFlags \|= RTPROC_FLAGS_HIDDEN;
1343	/** @todo Rename to EXECUTEPROCESSFLAG_PROFILE in next API change. */
1344	if (!(fFlags & EXECUTEPROCESSFLAG_NO_PROFILE))
1345	uProcFlags \|= RTPROC_FLAGS_PROFILE;
1346	if (fFlags & EXECUTEPROCESSFLAG_UNQUOTED_ARGS)
1347	uProcFlags \|= RTPROC_FLAGS_UNQUOTED_ARGS;
1348	}
1349
1350	/* If no user name specified run with current credentials (e.g.
1351	* full service/system rights). This is prohibited via official Main API!
1352	*
1353	* Otherwise use the RTPROC_FLAGS_SERVICE to use some special authentication
1354	* code (at least on Windows) for running processes as different users
1355	* started from our system service. */
1356	if (pszAsUser && *pszAsUser)
1357	uProcFlags \|= RTPROC_FLAGS_SERVICE;
1358	#ifdef DEBUG
1359	VGSvcVerbose(3, "Command: %s\n", szExecExp);
1360	for (size_t i = 0; papszArgsExp[i]; i++)
1361	VGSvcVerbose(3, "\targv[%ld]: %s\n", i, papszArgsExp[i]);
1362	#endif
1363	VGSvcVerbose(3, "Starting process '%s' ...\n", szExecExp);
1364
1365	const char *pszUser;
1366	#ifdef RT_OS_WINDOWS
1367	/* If a domain name is given, construct an UPN (User Principle Name) with
1368	* the domain name built-in, e.g. "[email protected]". */
1369	char *pszUserUPN = NULL;
1370	if ( pszDomain
1371	&& strlen(pszDomain))
1372	{
1373	int cbUserUPN = RTStrAPrintf(&pszUserUPN, "%s@%s", pszAsUser, pszDomain);
1374	if (cbUserUPN > 0)
1375	{
1376	pszUser = pszUserUPN;
1377	VGSvcVerbose(3, "Using UPN: %s\n", pszUserUPN);
1378	}
1379	}
1380
1381	if (!pszUserUPN) /* Fallback */
1382	#endif
1383	pszUser = pszAsUser;
1384
1385	/* Do normal execution. */
1386	rc = RTProcCreateEx(szExecExp, papszArgsExp, hEnv, uProcFlags,
1387	phStdIn, phStdOut, phStdErr,
1388	pszUser,
1389	pszPassword && *pszPassword ? pszPassword : NULL,
1390	phProcess);
1391	#ifdef RT_OS_WINDOWS
1392	if (pszUserUPN)
1393	RTStrFree(pszUserUPN);
1394	#endif
1395	VGSvcVerbose(3, "Starting process '%s' returned rc=%Rrc\n", szExecExp, rc);
1396
1397	vgsvcGstCtrlProcessFreeArgv(papszArgsExp);
1398	}
1399	}
1400	return rc;
1401	}
1402
1403
1404	#ifdef DEBUG
1405	static int vgsvcGstCtrlProcessDumpToFile(const char pszFileName, void pvBuf, size_t cbBuf)
1406	{
1407	AssertPtrReturn(pszFileName, VERR_INVALID_POINTER);
1408	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
1409
1410	if (!cbBuf)
1411	return VINF_SUCCESS;
1412
1413	char szFile[RTPATH_MAX];
1414
1415	int rc = RTPathTemp(szFile, sizeof(szFile));
1416	if (RT_SUCCESS(rc))
1417	rc = RTPathAppend(szFile, sizeof(szFile), pszFileName);
1418
1419	if (RT_SUCCESS(rc))
1420	{
1421	VGSvcVerbose(4, "Dumping %ld bytes to '%s'\n", cbBuf, szFile);
1422
1423	RTFILE fh;
1424	rc = RTFileOpen(&fh, szFile, RTFILE_O_OPEN_CREATE \| RTFILE_O_WRITE \| RTFILE_O_DENY_WRITE);
1425	if (RT_SUCCESS(rc))
1426	{
1427	rc = RTFileWrite(fh, pvBuf, cbBuf, NULL /* pcbWritten */);
1428	RTFileClose(fh);
1429	}
1430	}
1431
1432	return rc;
1433	}
1434	#endif /* DEBUG */
1435
1436
1437	/**
1438	* The actual worker routine (loop) for a started guest process.
1439	*
1440	* @return IPRT status code.
1441	* @param pProcess The process we're servicing and monitoring.
1442	*/
1443	static int vgsvcGstCtrlProcessProcessWorker(PVBOXSERVICECTRLPROCESS pProcess)
1444	{
1445	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
1446	VGSvcVerbose(3, "Thread of process pThread=0x%p = '%s' started\n", pProcess, pProcess->StartupInfo.szCmd);
1447
1448	int rc = VbglR3GuestCtrlConnect(&pProcess->uClientID);
1449	if (RT_FAILURE(rc))
1450	{
1451	VGSvcError("Process thread '%s' (%p) failed to connect to the guest control service, rc=%Rrc\n",
1452	pProcess->StartupInfo.szCmd, pProcess, rc);
1453	RTThreadUserSignal(RTThreadSelf());
1454	return rc;
1455	}
1456
1457	VGSvcVerbose(3, "Guest process '%s' got client ID=%u, flags=0x%x\n",
1458	pProcess->StartupInfo.szCmd, pProcess->uClientID, pProcess->StartupInfo.uFlags);
1459
1460	/* The process thread is not interested in receiving any commands;
1461	* tell the host service. */
1462	rc = VbglR3GuestCtrlMsgFilterSet(pProcess->uClientID, 0 /* Skip all */,
1463	0 /* Filter mask to add /, 0 / Filter mask to remove */);
1464	if (RT_FAILURE(rc))
1465	{
1466	VGSvcError("Unable to set message filter, rc=%Rrc\n", rc);
1467	/* Non-critical. */
1468	}
1469
1470	rc = VGSvcGstCtrlSessionProcessAdd(pProcess->pSession, pProcess);
1471	if (RT_FAILURE(rc))
1472	{
1473	VGSvcError("Errorwhile adding guest process '%s' (%p) to session process list, rc=%Rrc\n",
1474	pProcess->StartupInfo.szCmd, pProcess, rc);
1475	RTThreadUserSignal(RTThreadSelf());
1476	return rc;
1477	}
1478
1479	bool fSignalled = false; /* Indicator whether we signalled the thread user event already. */
1480
1481	/*
1482	* Prepare argument list.
1483	*/
1484	char **papszArgs;
1485	uint32_t uNumArgs = 0; /* Initialize in case of RTGetOptArgvFromString() is failing ... */
1486	rc = RTGetOptArgvFromString(&papszArgs, (int*)&uNumArgs,
1487	(pProcess->StartupInfo.uNumArgs > 0) ? pProcess->StartupInfo.szArgs : "",
1488	RTGETOPTARGV_CNV_QUOTE_BOURNE_SH, NULL);
1489	/* Did we get the same result? */
1490	Assert(pProcess->StartupInfo.uNumArgs == uNumArgs + 1 /* Take argv[0] into account */);
1491
1492	/*
1493	* Prepare environment variables list.
1494	*/
1495	/** @todo r=bird: you don't need to prepare this, do you? Why don't you replace
1496	* the brilliant RTStrAPrintf call with RTEnvPutEx and drop the papszEnv related code? */
1497	char **papszEnv = NULL;
1498	uint32_t uNumEnvVars = 0; /* Initialize in case of failing ... */
1499	if (RT_SUCCESS(rc))
1500	{
1501	/* Prepare environment list. */
1502	if (pProcess->StartupInfo.uNumEnvVars)
1503	{
1504	papszEnv = (char *)RTMemAlloc(pProcess->StartupInfo.uNumEnvVars sizeof(char*));
1505	AssertPtr(papszEnv);
1506	uNumEnvVars = pProcess->StartupInfo.uNumEnvVars;
1507
1508	const char *pszCur = pProcess->StartupInfo.szEnv;
1509	uint32_t i = 0;
1510	uint32_t cbLen = 0;
1511	while (cbLen < pProcess->StartupInfo.cbEnv)
1512	{
1513	/* sanity check */
1514	if (i >= pProcess->StartupInfo.uNumEnvVars)
1515	{
1516	rc = VERR_INVALID_PARAMETER;
1517	break;
1518	}
1519	int cbStr = RTStrAPrintf(&papszEnv[i++], "%s", pszCur);
1520	if (cbStr < 0)
1521	{
1522	rc = VERR_NO_STR_MEMORY;
1523	break;
1524	}
1525	pszCur += cbStr + 1; /* Skip terminating '\0' */
1526	cbLen += cbStr + 1; /* Skip terminating '\0' */
1527	}
1528	Assert(i == pProcess->StartupInfo.uNumEnvVars);
1529	}
1530	}
1531
1532	/*
1533	* Create the environment.
1534	*/
1535	RTENV hEnv;
1536	if (RT_SUCCESS(rc))
1537	rc = RTEnvClone(&hEnv, RTENV_DEFAULT);
1538	if (RT_SUCCESS(rc))
1539	{
1540	size_t i;
1541	for (i = 0; i < uNumEnvVars && papszEnv; i++)
1542	{
1543	rc = RTEnvPutEx(hEnv, papszEnv[i]);
1544	if (RT_FAILURE(rc))
1545	break;
1546	}
1547	if (RT_SUCCESS(rc))
1548	{
1549	/*
1550	* Setup the redirection of the standard stuff.
1551	*/
1552	/** @todo consider supporting: gcc stuff.c >file 2>&1. */
1553	RTHANDLE hStdIn;
1554	PRTHANDLE phStdIn;
1555	rc = vgsvcGstCtrlProcessSetupPipe("\|", 0 /STDIN_FILENO/,
1556	&hStdIn, &phStdIn, &pProcess->hPipeStdInW);
1557	if (RT_SUCCESS(rc))
1558	{
1559	RTHANDLE hStdOut;
1560	PRTHANDLE phStdOut;
1561	rc = vgsvcGstCtrlProcessSetupPipe( (pProcess->StartupInfo.uFlags & EXECUTEPROCESSFLAG_WAIT_STDOUT)
1562	? "\|" : "/dev/null",
1563	1 /STDOUT_FILENO/,
1564	&hStdOut, &phStdOut, &pProcess->hPipeStdOutR);
1565	if (RT_SUCCESS(rc))
1566	{
1567	RTHANDLE hStdErr;
1568	PRTHANDLE phStdErr;
1569	rc = vgsvcGstCtrlProcessSetupPipe( (pProcess->StartupInfo.uFlags & EXECUTEPROCESSFLAG_WAIT_STDERR)
1570	? "\|" : "/dev/null",
1571	2 /STDERR_FILENO/,
1572	&hStdErr, &phStdErr, &pProcess->hPipeStdErrR);
1573	if (RT_SUCCESS(rc))
1574	{
1575	/*
1576	* Create a poll set for the pipes and let the
1577	* transport layer add stuff to it as well.
1578	*/
1579	rc = RTPollSetCreate(&pProcess->hPollSet);
1580	if (RT_SUCCESS(rc))
1581	{
1582	uint32_t uFlags = RTPOLL_EVT_ERROR;
1583	#if 0
1584	/* Add reading event to pollset to get some more information. */
1585	uFlags \|= RTPOLL_EVT_READ;
1586	#endif
1587	/* Stdin. */
1588	if (RT_SUCCESS(rc))
1589	rc = RTPollSetAddPipe(pProcess->hPollSet,
1590	pProcess->hPipeStdInW, RTPOLL_EVT_ERROR, VBOXSERVICECTRLPIPEID_STDIN);
1591	/* Stdout. */
1592	if (RT_SUCCESS(rc))
1593	rc = RTPollSetAddPipe(pProcess->hPollSet,
1594	pProcess->hPipeStdOutR, uFlags, VBOXSERVICECTRLPIPEID_STDOUT);
1595	/* Stderr. */
1596	if (RT_SUCCESS(rc))
1597	rc = RTPollSetAddPipe(pProcess->hPollSet,
1598	pProcess->hPipeStdErrR, uFlags, VBOXSERVICECTRLPIPEID_STDERR);
1599	/* IPC notification pipe. */
1600	if (RT_SUCCESS(rc))
1601	rc = RTPipeCreate(&pProcess->hNotificationPipeR, &pProcess->hNotificationPipeW, 0 /* Flags */);
1602	if (RT_SUCCESS(rc))
1603	rc = RTPollSetAddPipe(pProcess->hPollSet,
1604	pProcess->hNotificationPipeR, RTPOLL_EVT_READ, VBOXSERVICECTRLPIPEID_IPC_NOTIFY);
1605	if (RT_SUCCESS(rc))
1606	{
1607	AssertPtr(pProcess->pSession);
1608	bool fNeedsImpersonation = !(pProcess->pSession->fFlags & VBOXSERVICECTRLSESSION_FLAG_SPAWN);
1609
1610	rc = vgsvcGstCtrlProcessCreateProcess(pProcess->StartupInfo.szCmd, papszArgs, hEnv,
1611	pProcess->StartupInfo.uFlags,
1612	phStdIn, phStdOut, phStdErr,
1613	fNeedsImpersonation ? pProcess->StartupInfo.szUser : NULL,
1614	fNeedsImpersonation ? pProcess->StartupInfo.szPassword : NULL,
1615	fNeedsImpersonation ? pProcess->StartupInfo.szDomain : NULL,
1616	&pProcess->hProcess);
1617	if (RT_FAILURE(rc))
1618	VGSvcError("Error starting process, rc=%Rrc\n", rc);
1619	/*
1620	* Tell the session thread that it can continue
1621	* spawning guest processes. This needs to be done after the new
1622	* process has been started because otherwise signal handling
1623	* on (Open) Solaris does not work correctly (see @bugref{5068}).
1624	*/
1625	int rc2 = RTThreadUserSignal(RTThreadSelf());
1626	if (RT_SUCCESS(rc))
1627	rc = rc2;
1628	fSignalled = true;
1629
1630	if (RT_SUCCESS(rc))
1631	{
1632	/*
1633	* Close the child ends of any pipes and redirected files.
1634	*/
1635	rc2 = RTHandleClose(phStdIn); AssertRC(rc2);
1636	phStdIn = NULL;
1637	rc2 = RTHandleClose(phStdOut); AssertRC(rc2);
1638	phStdOut = NULL;
1639	rc2 = RTHandleClose(phStdErr); AssertRC(rc2);
1640	phStdErr = NULL;
1641
1642	/* Enter the process main loop. */
1643	rc = vgsvcGstCtrlProcessProcLoop(pProcess);
1644
1645	/*
1646	* The handles that are no longer in the set have
1647	* been closed by the above call in order to prevent
1648	* the guest from getting stuck accessing them.
1649	* So, NIL the handles to avoid closing them again.
1650	*/
1651	if (RT_FAILURE(RTPollSetQueryHandle(pProcess->hPollSet,
1652	VBOXSERVICECTRLPIPEID_IPC_NOTIFY, NULL)))
1653	{
1654	pProcess->hNotificationPipeR = NIL_RTPIPE;
1655	pProcess->hNotificationPipeW = NIL_RTPIPE;
1656	}
1657	if (RT_FAILURE(RTPollSetQueryHandle(pProcess->hPollSet,
1658	VBOXSERVICECTRLPIPEID_STDERR, NULL)))
1659	pProcess->hPipeStdErrR = NIL_RTPIPE;
1660	if (RT_FAILURE(RTPollSetQueryHandle(pProcess->hPollSet,
1661	VBOXSERVICECTRLPIPEID_STDOUT, NULL)))
1662	pProcess->hPipeStdOutR = NIL_RTPIPE;
1663	if (RT_FAILURE(RTPollSetQueryHandle(pProcess->hPollSet,
1664	VBOXSERVICECTRLPIPEID_STDIN, NULL)))
1665	pProcess->hPipeStdInW = NIL_RTPIPE;
1666	}
1667	}
1668	RTPollSetDestroy(pProcess->hPollSet);
1669
1670	RTPipeClose(pProcess->hNotificationPipeR);
1671	pProcess->hNotificationPipeR = NIL_RTPIPE;
1672	RTPipeClose(pProcess->hNotificationPipeW);
1673	pProcess->hNotificationPipeW = NIL_RTPIPE;
1674	}
1675	RTPipeClose(pProcess->hPipeStdErrR);
1676	pProcess->hPipeStdErrR = NIL_RTPIPE;
1677	RTHandleClose(phStdErr);
1678	if (phStdErr)
1679	RTHandleClose(phStdErr);
1680	}
1681	RTPipeClose(pProcess->hPipeStdOutR);
1682	pProcess->hPipeStdOutR = NIL_RTPIPE;
1683	RTHandleClose(&hStdOut);
1684	if (phStdOut)
1685	RTHandleClose(phStdOut);
1686	}
1687	RTPipeClose(pProcess->hPipeStdInW);
1688	pProcess->hPipeStdInW = NIL_RTPIPE;
1689	RTHandleClose(phStdIn);
1690	}
1691	}
1692	RTEnvDestroy(hEnv);
1693	}
1694
1695	if (pProcess->uClientID)
1696	{
1697	if (RT_FAILURE(rc))
1698	{
1699	VBGLR3GUESTCTRLCMDCTX ctx = { pProcess->uClientID, pProcess->uContextID };
1700	int rc2 = VbglR3GuestCtrlProcCbStatus(&ctx,
1701	pProcess->uPID, PROC_STS_ERROR, rc,
1702	NULL /* pvData /, 0 / cbData */);
1703	if ( RT_FAILURE(rc2)
1704	&& rc2 != VERR_NOT_FOUND)
1705	VGSvcError("[PID %RU32]: Could not report process failure error; rc=%Rrc (process error %Rrc)\n",
1706	pProcess->uPID, rc2, rc);
1707	}
1708
1709	/* Disconnect this client from the guest control service. This also cancels all
1710	* outstanding host requests. */
1711	VGSvcVerbose(3, "[PID %RU32]: Disconnecting (client ID=%u) ...\n", pProcess->uPID, pProcess->uClientID);
1712	VbglR3GuestCtrlDisconnect(pProcess->uClientID);
1713	pProcess->uClientID = 0;
1714	}
1715
1716	/* Free argument + environment variable lists. */
1717	if (uNumEnvVars)
1718	{
1719	for (uint32_t i = 0; i < uNumEnvVars; i++)
1720	RTStrFree(papszEnv[i]);
1721	RTMemFree(papszEnv);
1722	}
1723	if (uNumArgs)
1724	RTGetOptArgvFree(papszArgs);
1725
1726	/*
1727	* If something went wrong signal the user event so that others don't wait
1728	* forever on this thread.
1729	*/
1730	if (RT_FAILURE(rc) && !fSignalled)
1731	RTThreadUserSignal(RTThreadSelf());
1732
1733	VGSvcVerbose(3, "[PID %RU32]: Thread of process '%s' ended with rc=%Rrc\n",
1734	pProcess->uPID, pProcess->StartupInfo.szCmd, rc);
1735
1736	/* Finally, update stopped status. */
1737	ASMAtomicXchgBool(&pProcess->fStopped, true);
1738
1739	return rc;
1740	}
1741
1742
1743	static int vgsvcGstCtrlProcessLock(PVBOXSERVICECTRLPROCESS pProcess)
1744	{
1745	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
1746	int rc = RTCritSectEnter(&pProcess->CritSect);
1747	AssertRC(rc);
1748	return rc;
1749	}
1750
1751
1752	/**
1753	* Thread main routine for a started process.
1754	*
1755	* @return IPRT status code.
1756	* @param hThreadSelf The thread handle.
1757	* @param pvUser Pointer to a VBOXSERVICECTRLPROCESS structure.
1758	*
1759	*/
1760	static DECLCALLBACK(int) vgsvcGstCtrlProcessThread(RTTHREAD hThreadSelf, void *pvUser)
1761	{
1762	PVBOXSERVICECTRLPROCESS pProcess = (PVBOXSERVICECTRLPROCESS)pvUser;
1763	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
1764	return vgsvcGstCtrlProcessProcessWorker(pProcess);
1765	}
1766
1767
1768	static int vgsvcGstCtrlProcessUnlock(PVBOXSERVICECTRLPROCESS pProcess)
1769	{
1770	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
1771	int rc = RTCritSectLeave(&pProcess->CritSect);
1772	AssertRC(rc);
1773	return rc;
1774	}
1775
1776
1777	/**
1778	* Executes (starts) a process on the guest. This causes a new thread to be created
1779	* so that this function will not block the overall program execution.
1780	*
1781	* @return IPRT status code.
1782	* @param pSession Guest session.
1783	* @param pStartupInfo Startup info.
1784	* @param uContextID Context ID to associate the process to start with.
1785	*/
1786	int VGSvcGstCtrlProcessStart(const PVBOXSERVICECTRLSESSION pSession,
1787	const PVBOXSERVICECTRLPROCSTARTUPINFO pStartupInfo, uint32_t uContextID)
1788	{
1789	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
1790	AssertPtrReturn(pStartupInfo, VERR_INVALID_POINTER);
1791
1792	/*
1793	* Allocate new thread data and assign it to our thread list.
1794	*/
1795	PVBOXSERVICECTRLPROCESS pProcess = (PVBOXSERVICECTRLPROCESS)RTMemAlloc(sizeof(VBOXSERVICECTRLPROCESS));
1796	if (!pProcess)
1797	return VERR_NO_MEMORY;
1798
1799	int rc = vgsvcGstCtrlProcessInit(pProcess, pSession, pStartupInfo, uContextID);
1800	if (RT_SUCCESS(rc))
1801	{
1802	static uint32_t s_uCtrlExecThread = 0;
1803	if (s_uCtrlExecThread++ == UINT32_MAX)
1804	s_uCtrlExecThread = 0; /* Wrap around to not let IPRT freak out. */
1805	rc = RTThreadCreateF(&pProcess->Thread, vgsvcGstCtrlProcessThread,
1806	pProcess /pvUser/, 0 /cbStack/,
1807	RTTHREADTYPE_DEFAULT, RTTHREADFLAGS_WAITABLE, "gctl%u", s_uCtrlExecThread);
1808	if (RT_FAILURE(rc))
1809	{
1810	VGSvcError("Creating thread for guest process '%s' failed: rc=%Rrc, pProcess=%p\n",
1811	pStartupInfo->szCmd, rc, pProcess);
1812
1813	VGSvcGstCtrlProcessFree(pProcess);
1814	}
1815	else
1816	{
1817	VGSvcVerbose(4, "Waiting for thread to initialize ...\n");
1818
1819	/* Wait for the thread to initialize. */
1820	rc = RTThreadUserWait(pProcess->Thread, 60 * 1000 /* 60 seconds max. */);
1821	AssertRC(rc);
1822	if ( ASMAtomicReadBool(&pProcess->fShutdown)
1823	\|\| RT_FAILURE(rc))
1824	{
1825	VGSvcError("Thread for process '%s' failed to start, rc=%Rrc\n", pStartupInfo->szCmd, rc);
1826	VGSvcGstCtrlProcessFree(pProcess);
1827	}
1828	else
1829	{
1830	ASMAtomicXchgBool(&pProcess->fStarted, true);
1831	}
1832	}
1833	}
1834
1835	return rc;
1836	}
1837
1838
1839	static DECLCALLBACK(int) vgsvcGstCtrlProcessOnInput(PVBOXSERVICECTRLPROCESS pThis,
1840	const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
1841	bool fPendingClose, void *pvBuf, uint32_t cbBuf)
1842	{
1843	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
1844	AssertPtrReturn(pHostCtx, VERR_INVALID_POINTER);
1845
1846	int rc;
1847
1848	size_t cbWritten = 0;
1849	if (pvBuf && cbBuf)
1850	{
1851	if (pThis->hPipeStdInW != NIL_RTPIPE)
1852	rc = RTPipeWrite(pThis->hPipeStdInW, pvBuf, cbBuf, &cbWritten);
1853	else
1854	rc = VINF_EOF;
1855	}
1856	else
1857	rc = VERR_INVALID_PARAMETER;
1858
1859	/*
1860	* If this is the last write + we have really have written all data
1861	* we need to close the stdin pipe on our end and remove it from
1862	* the poll set.
1863	*/
1864	if ( fPendingClose
1865	&& cbBuf == cbWritten)
1866	{
1867	int rc2 = vgsvcGstCtrlProcessPollsetCloseInput(pThis, &pThis->hPipeStdInW);
1868	if (RT_SUCCESS(rc))
1869	rc = rc2;
1870	}
1871
1872	uint32_t uStatus = INPUT_STS_UNDEFINED; /* Status to send back to the host. */
1873	uint32_t fFlags = 0; /* No flags at the moment. */
1874	if (RT_SUCCESS(rc))
1875	{
1876	VGSvcVerbose(4, "[PID %RU32]: Written %RU32 bytes input, CID=%RU32, fPendingClose=%RTbool\n",
1877	pThis->uPID, cbWritten, pHostCtx->uContextID, fPendingClose);
1878	uStatus = INPUT_STS_WRITTEN;
1879	}
1880	else
1881	{
1882	if (rc == VERR_BAD_PIPE)
1883	uStatus = INPUT_STS_TERMINATED;
1884	else if (rc == VERR_BUFFER_OVERFLOW)
1885	uStatus = INPUT_STS_OVERFLOW;
1886	/* else undefined */
1887	}
1888
1889	/*
1890	* If there was an error and we did not set the host status
1891	* yet, then do it now.
1892	*/
1893	if ( RT_FAILURE(rc)
1894	&& uStatus == INPUT_STS_UNDEFINED)
1895	{
1896	uStatus = INPUT_STS_ERROR;
1897	fFlags = rc; /* funny thing to call a "flag"... */
1898	}
1899	Assert(uStatus > INPUT_STS_UNDEFINED);
1900
1901	int rc2 = VbglR3GuestCtrlProcCbStatusInput(pHostCtx, pThis->uPID, uStatus, fFlags, (uint32_t)cbWritten);
1902	if (RT_SUCCESS(rc))
1903	rc = rc2;
1904
1905	#ifdef DEBUG
1906	VGSvcVerbose(3, "[PID %RU32]: vgsvcGstCtrlProcessOnInput returned with rc=%Rrc\n", pThis->uPID, rc);
1907	#endif
1908	return VINF_SUCCESS; /** @todo Return rc here as soon as RTReqQueue todos are fixed. */
1909	}
1910
1911
1912	static DECLCALLBACK(int) vgsvcGstCtrlProcessOnOutput(PVBOXSERVICECTRLPROCESS pThis,
1913	const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
1914	uint32_t uHandle, uint32_t cbToRead, uint32_t fFlags)
1915	{
1916	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
1917	AssertPtrReturn(pHostCtx, VERR_INVALID_POINTER);
1918
1919	const PVBOXSERVICECTRLSESSION pSession = pThis->pSession;
1920	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
1921
1922	int rc;
1923
1924	uint32_t cbBuf = cbToRead;
1925	uint8_t pvBuf = (uint8_t )RTMemAlloc(cbBuf);
1926	if (pvBuf)
1927	{
1928	PRTPIPE phPipe = uHandle == OUTPUT_HANDLE_ID_STDOUT
1929	? &pThis->hPipeStdOutR
1930	: &pThis->hPipeStdErrR;
1931	AssertPtr(phPipe);
1932
1933	size_t cbRead = 0;
1934	if (*phPipe != NIL_RTPIPE)
1935	{
1936	rc = RTPipeRead(*phPipe, pvBuf, cbBuf, &cbRead);
1937	if (RT_FAILURE(rc))
1938	{
1939	RTPollSetRemove(pThis->hPollSet, uHandle == OUTPUT_HANDLE_ID_STDERR
1940	? VBOXSERVICECTRLPIPEID_STDERR : VBOXSERVICECTRLPIPEID_STDOUT);
1941	RTPipeClose(*phPipe);
1942	*phPipe = NIL_RTPIPE;
1943	if (rc == VERR_BROKEN_PIPE)
1944	rc = VINF_EOF;
1945	}
1946	}
1947	else
1948	rc = VINF_EOF;
1949
1950	#ifdef DEBUG
1951	if (RT_SUCCESS(rc))
1952	{
1953	if ( pSession->fFlags & VBOXSERVICECTRLSESSION_FLAG_DUMPSTDOUT
1954	&& ( uHandle == OUTPUT_HANDLE_ID_STDOUT
1955	\|\| uHandle == OUTPUT_HANDLE_ID_STDOUT_DEPRECATED)
1956	)
1957	{
1958	/** @todo r=bird: vgsvcGstCtrlProcessDumpToFile(void pvBuf, size_t cbBuf, const char pszFileNmFmt, ...) */
1959	char szDumpFile[RTPATH_MAX];
1960	if (!RTStrPrintf(szDumpFile, sizeof(szDumpFile), "VBoxService_Session%RU32_PID%RU32_StdOut.txt",
1961	pSession->StartupInfo.uSessionID, pThis->uPID)) rc = VERR_BUFFER_UNDERFLOW;
1962	if (RT_SUCCESS(rc))
1963	rc = vgsvcGstCtrlProcessDumpToFile(szDumpFile, pvBuf, cbRead);
1964	AssertRC(rc);
1965	}
1966	else if ( pSession->fFlags & VBOXSERVICECTRLSESSION_FLAG_DUMPSTDERR
1967	&& uHandle == OUTPUT_HANDLE_ID_STDERR)
1968	{
1969	char szDumpFile[RTPATH_MAX];
1970	if (!RTStrPrintf(szDumpFile, sizeof(szDumpFile), "VBoxService_Session%RU32_PID%RU32_StdErr.txt",
1971	pSession->StartupInfo.uSessionID, pThis->uPID))
1972	rc = VERR_BUFFER_UNDERFLOW;
1973	if (RT_SUCCESS(rc))
1974	rc = vgsvcGstCtrlProcessDumpToFile(szDumpFile, pvBuf, cbRead);
1975	AssertRC(rc);
1976	}
1977	}
1978	#endif
1979
1980	if (RT_SUCCESS(rc))
1981	{
1982	#ifdef DEBUG
1983	VGSvcVerbose(3, "[PID %RU32]: Read %RU32 bytes output: uHandle=%RU32, CID=%RU32, fFlags=%x\n",
1984	pThis->uPID, cbRead, uHandle, pHostCtx->uContextID, fFlags);
1985	#endif
1986	/** Note: Don't convert/touch/modify/whatever the output data here! This might be binary
1987	* data which the host needs to work with -- so just pass through all data unfiltered! */
1988
1989	/* Note: Since the context ID is unique the request has to be completed here,
1990	* regardless whether we got data or not! Otherwise the waiting events
1991	* on the host never will get completed! */
1992	Assert((uint32_t)cbRead == cbRead);
1993	rc = VbglR3GuestCtrlProcCbOutput(pHostCtx, pThis->uPID, uHandle, fFlags, pvBuf, (uint32_t)cbRead);
1994	if ( RT_FAILURE(rc)
1995	&& rc == VERR_NOT_FOUND) /* Not critical if guest PID is not found on the host (anymore). */
1996	rc = VINF_SUCCESS;
1997	}
1998
1999	RTMemFree(pvBuf);
2000	}
2001	else
2002	rc = VERR_NO_MEMORY;
2003
2004	#ifdef DEBUG
2005	VGSvcVerbose(3, "[PID %RU32]: Reading output returned with rc=%Rrc\n", pThis->uPID, rc);
2006	#endif
2007	return VINF_SUCCESS; /** @todo Return rc here as soon as RTReqQueue todos are fixed. */
2008	}
2009
2010
2011	static DECLCALLBACK(int) vgsvcGstCtrlProcessOnTerm(PVBOXSERVICECTRLPROCESS pThis)
2012	{
2013	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
2014
2015	if (!ASMAtomicXchgBool(&pThis->fShutdown, true))
2016	VGSvcVerbose(3, "[PID %RU32]: Setting shutdown flag ...\n", pThis->uPID);
2017
2018	return VINF_SUCCESS; /** @todo Return rc here as soon as RTReqQueue todos are fixed. */
2019	}
2020
2021
2022	static int vgsvcGstCtrlProcessRequestExV(PVBOXSERVICECTRLPROCESS pProcess, const PVBGLR3GUESTCTRLCMDCTX pHostCtx, bool fAsync,
2023	RTMSINTERVAL uTimeoutMS, PRTREQ pReq, PFNRT pfnFunction, unsigned cArgs, va_list Args)
2024	{
2025	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
2026	/* pHostCtx is optional. */
2027	AssertPtrReturn(pfnFunction, VERR_INVALID_POINTER);
2028	if (!fAsync)
2029	AssertPtrReturn(pfnFunction, VERR_INVALID_POINTER);
2030
2031	int rc = vgsvcGstCtrlProcessLock(pProcess);
2032	if (RT_SUCCESS(rc))
2033	{
2034	#ifdef DEBUG
2035	VGSvcVerbose(3, "[PID %RU32]: vgsvcGstCtrlProcessRequestExV fAsync=%RTbool, uTimeoutMS=%RU32, cArgs=%u\n",
2036	pProcess->uPID, fAsync, uTimeoutMS, cArgs);
2037	#endif
2038	uint32_t fFlags = RTREQFLAGS_IPRT_STATUS;
2039	if (fAsync)
2040	{
2041	Assert(uTimeoutMS == 0);
2042	fFlags \|= RTREQFLAGS_NO_WAIT;
2043	}
2044
2045	rc = RTReqQueueCallV(pProcess->hReqQueue, &pReq, uTimeoutMS, fFlags, pfnFunction, cArgs, Args);
2046	if (RT_SUCCESS(rc))
2047	{
2048	/* Wake up the process' notification pipe to get
2049	* the request being processed. */
2050	Assert(pProcess->hNotificationPipeW != NIL_RTPIPE);
2051	size_t cbWritten = 0;
2052	rc = RTPipeWrite(pProcess->hNotificationPipeW, "i", 1, &cbWritten);
2053	if ( RT_SUCCESS(rc)
2054	&& cbWritten != 1)
2055	{
2056	VGSvcError("[PID %RU32]: Notification pipe got %zu bytes instead of 1\n",
2057	pProcess->uPID, cbWritten);
2058	}
2059	else if (RT_UNLIKELY(RT_FAILURE(rc)))
2060	VGSvcError("[PID %RU32]: Writing to notification pipe failed, rc=%Rrc\n",
2061	pProcess->uPID, rc);
2062	}
2063	else
2064	VGSvcError("[PID %RU32]: RTReqQueueCallV failed, rc=%Rrc\n",
2065	pProcess->uPID, rc);
2066
2067	int rc2 = vgsvcGstCtrlProcessUnlock(pProcess);
2068	if (RT_SUCCESS(rc))
2069	rc = rc2;
2070	}
2071
2072	#ifdef DEBUG
2073	VGSvcVerbose(3, "[PID %RU32]: vgsvcGstCtrlProcessRequestExV returned rc=%Rrc\n", pProcess->uPID, rc);
2074	#endif
2075	return rc;
2076	}
2077
2078
2079	static int vgsvcGstCtrlProcessRequestAsync(PVBOXSERVICECTRLPROCESS pProcess, const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
2080	PFNRT pfnFunction, unsigned cArgs, ...)
2081	{
2082	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
2083	/* pHostCtx is optional. */
2084	AssertPtrReturn(pfnFunction, VERR_INVALID_POINTER);
2085
2086	va_list va;
2087	va_start(va, cArgs);
2088	int rc = vgsvcGstCtrlProcessRequestExV(pProcess, pHostCtx, true /* fAsync /, 0 / uTimeoutMS */,
2089	NULL /* pReq */, pfnFunction, cArgs, va);
2090	va_end(va);
2091
2092	return rc;
2093	}
2094
2095
2096	#if 0 /* unused */
2097	static int vgsvcGstCtrlProcessRequestWait(PVBOXSERVICECTRLPROCESS pProcess, const PVBGLR3GUESTCTRLCMDCTX pHostCtx,
2098	RTMSINTERVAL uTimeoutMS, PRTREQ pReq, PFNRT pfnFunction, unsigned cArgs, ...)
2099	{
2100	AssertPtrReturn(pProcess, VERR_INVALID_POINTER);
2101	/* pHostCtx is optional. */
2102	AssertPtrReturn(pfnFunction, VERR_INVALID_POINTER);
2103
2104	va_list va;
2105	va_start(va, cArgs);
2106	int rc = vgsvcGstCtrlProcessRequestExV(pProcess, pHostCtx, false /* fAsync */, uTimeoutMS,
2107	pReq, pfnFunction, cArgs, va);
2108	va_end(va);
2109
2110	return rc;
2111	}
2112	#endif
2113
2114
2115	int VGSvcGstCtrlProcessHandleInput(PVBOXSERVICECTRLPROCESS pProcess, PVBGLR3GUESTCTRLCMDCTX pHostCtx,
2116	bool fPendingClose, void *pvBuf, uint32_t cbBuf)
2117	{
2118	if (!ASMAtomicReadBool(&pProcess->fShutdown))
2119	return vgsvcGstCtrlProcessRequestAsync(pProcess, pHostCtx, (PFNRT)vgsvcGstCtrlProcessOnInput,
2120	5 /* cArgs */, pProcess, pHostCtx, fPendingClose, pvBuf, cbBuf);
2121
2122	return vgsvcGstCtrlProcessOnInput(pProcess, pHostCtx, fPendingClose, pvBuf, cbBuf);
2123	}
2124
2125
2126	int VGSvcGstCtrlProcessHandleOutput(PVBOXSERVICECTRLPROCESS pProcess, PVBGLR3GUESTCTRLCMDCTX pHostCtx,
2127	uint32_t uHandle, uint32_t cbToRead, uint32_t fFlags)
2128	{
2129	if (!ASMAtomicReadBool(&pProcess->fShutdown))
2130	return vgsvcGstCtrlProcessRequestAsync(pProcess, pHostCtx, (PFNRT)vgsvcGstCtrlProcessOnOutput,
2131	5 /* cArgs */, pProcess, pHostCtx, uHandle, cbToRead, fFlags);
2132
2133	return vgsvcGstCtrlProcessOnOutput(pProcess, pHostCtx, uHandle, cbToRead, fFlags);
2134	}
2135
2136
2137	int VGSvcGstCtrlProcessHandleTerm(PVBOXSERVICECTRLPROCESS pProcess)
2138	{
2139	if (!ASMAtomicReadBool(&pProcess->fShutdown))
2140	return vgsvcGstCtrlProcessRequestAsync(pProcess, NULL /* pHostCtx */, (PFNRT)vgsvcGstCtrlProcessOnTerm,
2141	1 /* cArgs */, pProcess);
2142
2143	return vgsvcGstCtrlProcessOnTerm(pProcess);
2144	}
2145

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source: vbox/trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlProcess.cpp@ 61439

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