GuestFileImpl.cpp@ 94967

Last change on this file since 94967 was 94942, checked in by vboxsync, 3 years ago
Main/src-client/GuestFileImpl.cpp: Adjust to the new rules wrt. to rc -> hrc,vrc usage, bugref:10223
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 59.1 KB

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1	/* $Id: GuestFileImpl.cpp 94942 2022-05-09 09:21:57Z vboxsync $ */
2	/** @file
3	* VirtualBox Main - Guest file handling.
4	*/
5
6	/*
7	* Copyright (C) 2012-2022 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	#define LOG_GROUP LOG_GROUP_MAIN_GUESTFILE
23	#include "LoggingNew.h"
24
25	#ifndef VBOX_WITH_GUEST_CONTROL
26	# error "VBOX_WITH_GUEST_CONTROL must defined in this file"
27	#endif
28	#include "GuestFileImpl.h"
29	#include "GuestSessionImpl.h"
30	#include "GuestCtrlImplPrivate.h"
31	#include "ConsoleImpl.h"
32	#include "VirtualBoxErrorInfoImpl.h"
33
34	#include "Global.h"
35	#include "AutoCaller.h"
36	#include "VBoxEvents.h"
37
38	#include <iprt/cpp/utils.h> /* For unconst(). */
39	#include <iprt/file.h>
40
41	#include <VBox/com/array.h>
42	#include <VBox/com/listeners.h>
43	#include <VBox/AssertGuest.h>
44
45
46	/**
47	* Internal listener class to serve events in an
48	* active manner, e.g. without polling delays.
49	*/
50	class GuestFileListener
51	{
52	public:
53
54	GuestFileListener(void)
55	{
56	}
57
58	virtual ~GuestFileListener()
59	{
60	}
61
62	HRESULT init(GuestFile *pFile)
63	{
64	AssertPtrReturn(pFile, E_POINTER);
65	mFile = pFile;
66	return S_OK;
67	}
68
69	void uninit(void)
70	{
71	mFile = NULL;
72	}
73
74	STDMETHOD(HandleEvent)(VBoxEventType_T aType, IEvent *aEvent)
75	{
76	switch (aType)
77	{
78	case VBoxEventType_OnGuestFileStateChanged:
79	case VBoxEventType_OnGuestFileOffsetChanged:
80	case VBoxEventType_OnGuestFileRead:
81	case VBoxEventType_OnGuestFileWrite:
82	{
83	AssertPtrReturn(mFile, E_POINTER);
84	int vrc2 = mFile->signalWaitEvent(aType, aEvent);
85	RT_NOREF(vrc2);
86	#ifdef DEBUG_andy
87	LogFlowFunc(("Signalling events of type=%RU32, file=%p resulted in vrc=%Rrc\n",
88	aType, mFile, vrc2));
89	#endif
90	break;
91	}
92
93	default:
94	AssertMsgFailed(("Unhandled event %RU32\n", aType));
95	break;
96	}
97
98	return S_OK;
99	}
100
101	private:
102
103	/** Weak pointer to the guest file object to listen for. */
104	GuestFile *mFile;
105	};
106	typedef ListenerImpl<GuestFileListener, GuestFile*> GuestFileListenerImpl;
107
108	VBOX_LISTENER_DECLARE(GuestFileListenerImpl)
109
110	// constructor / destructor
111	/////////////////////////////////////////////////////////////////////////////
112
113	DEFINE_EMPTY_CTOR_DTOR(GuestFile)
114
115	HRESULT GuestFile::FinalConstruct(void)
116	{
117	LogFlowThisFuncEnter();
118	return BaseFinalConstruct();
119	}
120
121	void GuestFile::FinalRelease(void)
122	{
123	LogFlowThisFuncEnter();
124	uninit();
125	BaseFinalRelease();
126	LogFlowThisFuncLeave();
127	}
128
129	// public initializer/uninitializer for internal purposes only
130	/////////////////////////////////////////////////////////////////////////////
131
132	/**
133	* Initializes a file object but does not open the file on the guest
134	* yet. This is done in the dedidcated openFile call.
135	*
136	* @return IPRT status code.
137	* @param pConsole Pointer to console object.
138	* @param pSession Pointer to session object.
139	* @param aObjectID The object's ID.
140	* @param openInfo File opening information.
141	*/
142	int GuestFile::init(Console pConsole, GuestSession pSession,
143	ULONG aObjectID, const GuestFileOpenInfo &openInfo)
144	{
145	LogFlowThisFunc(("pConsole=%p, pSession=%p, aObjectID=%RU32, strPath=%s\n",
146	pConsole, pSession, aObjectID, openInfo.mFilename.c_str()));
147
148	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
149	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
150
151	/* Enclose the state transition NotReady->InInit->Ready. */
152	AutoInitSpan autoInitSpan(this);
153	AssertReturn(autoInitSpan.isOk(), VERR_OBJECT_DESTROYED);
154
155	int vrc = bindToSession(pConsole, pSession, aObjectID);
156	if (RT_SUCCESS(vrc))
157	{
158	mSession = pSession;
159
160	mData.mOpenInfo = openInfo;
161	mData.mInitialSize = 0;
162	mData.mStatus = FileStatus_Undefined;
163	mData.mLastError = VINF_SUCCESS;
164	mData.mOffCurrent = 0;
165
166	unconst(mEventSource).createObject();
167	HRESULT hr = mEventSource->init();
168	if (FAILED(hr))
169	vrc = VERR_COM_UNEXPECTED;
170	}
171
172	if (RT_SUCCESS(vrc))
173	{
174	try
175	{
176	GuestFileListener *pListener = new GuestFileListener();
177	ComObjPtr<GuestFileListenerImpl> thisListener;
178	HRESULT hr = thisListener.createObject();
179	if (SUCCEEDED(hr))
180	hr = thisListener->init(pListener, this);
181
182	if (SUCCEEDED(hr))
183	{
184	com::SafeArray <VBoxEventType_T> eventTypes;
185	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
186	eventTypes.push_back(VBoxEventType_OnGuestFileOffsetChanged);
187	eventTypes.push_back(VBoxEventType_OnGuestFileRead);
188	eventTypes.push_back(VBoxEventType_OnGuestFileWrite);
189	hr = mEventSource->RegisterListener(thisListener,
190	ComSafeArrayAsInParam(eventTypes),
191	TRUE /* Active listener */);
192	if (SUCCEEDED(hr))
193	{
194	vrc = baseInit();
195	if (RT_SUCCESS(vrc))
196	{
197	mLocalListener = thisListener;
198	}
199	}
200	else
201	vrc = VERR_COM_UNEXPECTED;
202	}
203	else
204	vrc = VERR_COM_UNEXPECTED;
205	}
206	catch(std::bad_alloc &)
207	{
208	vrc = VERR_NO_MEMORY;
209	}
210	}
211
212	if (RT_SUCCESS(vrc))
213	{
214	/* Confirm a successful initialization when it's the case. */
215	autoInitSpan.setSucceeded();
216	}
217	else
218	autoInitSpan.setFailed();
219
220	LogFlowFuncLeaveRC(vrc);
221	return vrc;
222	}
223
224	/**
225	* Uninitializes the instance.
226	* Called from FinalRelease().
227	*/
228	void GuestFile::uninit(void)
229	{
230	/* Enclose the state transition Ready->InUninit->NotReady. */
231	AutoUninitSpan autoUninitSpan(this);
232	if (autoUninitSpan.uninitDone())
233	return;
234
235	LogFlowThisFuncEnter();
236
237	baseUninit();
238	LogFlowThisFuncLeave();
239	}
240
241	// implementation of public getters/setters for attributes
242	/////////////////////////////////////////////////////////////////////////////
243
244	HRESULT GuestFile::getCreationMode(ULONG *aCreationMode)
245	{
246	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
247
248	*aCreationMode = mData.mOpenInfo.mCreationMode;
249
250	return S_OK;
251	}
252
253	HRESULT GuestFile::getOpenAction(FileOpenAction_T *aOpenAction)
254	{
255	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
256
257	*aOpenAction = mData.mOpenInfo.mOpenAction;
258
259	return S_OK;
260	}
261
262	HRESULT GuestFile::getEventSource(ComPtr<IEventSource> &aEventSource)
263	{
264	/* No need to lock - lifetime constant. */
265	mEventSource.queryInterfaceTo(aEventSource.asOutParam());
266
267	return S_OK;
268	}
269
270	HRESULT GuestFile::getFilename(com::Utf8Str &aFilename)
271	{
272	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
273
274	aFilename = mData.mOpenInfo.mFilename;
275
276	return S_OK;
277	}
278
279	HRESULT GuestFile::getId(ULONG *aId)
280	{
281	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
282
283	*aId = mObjectID;
284
285	return S_OK;
286	}
287
288	HRESULT GuestFile::getInitialSize(LONG64 *aInitialSize)
289	{
290	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
291
292	*aInitialSize = mData.mInitialSize;
293
294	return S_OK;
295	}
296
297	HRESULT GuestFile::getOffset(LONG64 *aOffset)
298	{
299	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
300
301	/*
302	* This is updated by GuestFile::i_onFileNotify() when read, write and seek
303	* confirmation messages are recevied.
304	*
305	* Note! This will not be accurate with older (< 5.2.32, 6.0.0 - 6.0.9)
306	* Guest Additions when using writeAt, readAt or writing to a file
307	* opened in append mode.
308	*/
309	*aOffset = mData.mOffCurrent;
310
311	return S_OK;
312	}
313
314	HRESULT GuestFile::getAccessMode(FileAccessMode_T *aAccessMode)
315	{
316	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
317
318	*aAccessMode = mData.mOpenInfo.mAccessMode;
319
320	return S_OK;
321	}
322
323	HRESULT GuestFile::getStatus(FileStatus_T *aStatus)
324	{
325	LogFlowThisFuncEnter();
326
327	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
328
329	*aStatus = mData.mStatus;
330
331	return S_OK;
332	}
333
334	// private methods
335	/////////////////////////////////////////////////////////////////////////////
336
337	/**
338	* Entry point for guest side file callbacks.
339	*
340	* @returns VBox status code.
341	* @param pCbCtx Host callback context.
342	* @param pSvcCb Host callback data.
343	*/
344	int GuestFile::i_callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
345	{
346	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
347	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
348
349	LogFlowThisFunc(("strName=%s, uContextID=%RU32, uFunction=%RU32, pSvcCb=%p\n",
350	mData.mOpenInfo.mFilename.c_str(), pCbCtx->uContextID, pCbCtx->uMessage, pSvcCb));
351
352	int vrc;
353	switch (pCbCtx->uMessage)
354	{
355	case GUEST_MSG_DISCONNECTED:
356	vrc = i_onGuestDisconnected(pCbCtx, pSvcCb);
357	break;
358
359	case GUEST_MSG_FILE_NOTIFY:
360	vrc = i_onFileNotify(pCbCtx, pSvcCb);
361	break;
362
363	default:
364	/* Silently ignore not implemented functions. */
365	vrc = VERR_NOT_SUPPORTED;
366	break;
367	}
368
369	#ifdef DEBUG
370	LogFlowFuncLeaveRC(vrc);
371	#endif
372	return vrc;
373	}
374
375	/**
376	* Closes the file on the guest side.
377	*
378	* @returns VBox status code.
379	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
380	* @param prcGuest Where to return the guest error when VERR_GSTCTL_GUEST_ERROR
381	* was returned.
382	*/
383	int GuestFile::i_closeFile(int *prcGuest)
384	{
385	LogFlowThisFunc(("strFile=%s\n", mData.mOpenInfo.mFilename.c_str()));
386
387	int vrc;
388
389	GuestWaitEvent *pEvent = NULL;
390	GuestEventTypes eventTypes;
391	try
392	{
393	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
394
395	vrc = registerWaitEvent(eventTypes, &pEvent);
396	}
397	catch (std::bad_alloc &)
398	{
399	vrc = VERR_NO_MEMORY;
400	}
401
402	if (RT_FAILURE(vrc))
403	return vrc;
404
405	/* Prepare HGCM call. */
406	VBOXHGCMSVCPARM paParms[4];
407	int i = 0;
408	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
409	HGCMSvcSetU32(&paParms[i++], mObjectID /* Guest file ID */);
410
411	vrc = sendMessage(HOST_MSG_FILE_CLOSE, i, paParms);
412	if (RT_SUCCESS(vrc))
413	vrc = i_waitForStatusChange(pEvent, 30 * 1000 /* Timeout in ms */,
414	NULL /* FileStatus */, prcGuest);
415	unregisterWaitEvent(pEvent);
416
417	LogFlowFuncLeaveRC(vrc);
418	return vrc;
419	}
420
421	/**
422	* Converts a given guest file error to a string.
423	*
424	* @returns Error string.
425	* @param rcGuest Guest file error to return string for.
426	* @param pcszWhat Hint of what was involved when the error occurred.
427	*/
428	/* static */
429	Utf8Str GuestFile::i_guestErrorToString(int rcGuest, const char *pcszWhat)
430	{
431	AssertPtrReturn(pcszWhat, "");
432
433	Utf8Str strErr;
434	switch (rcGuest)
435	{
436	#define CASE_MSG(a_iRc, ...) \
437	case a_iRc: strErr.printf(__VA_ARGS__); break;
438	CASE_MSG(VERR_ACCESS_DENIED , tr("Access to guest file \"%s\" denied"), pcszWhat);
439	CASE_MSG(VERR_ALREADY_EXISTS , tr("Guest file \"%s\" already exists"), pcszWhat);
440	CASE_MSG(VERR_FILE_NOT_FOUND , tr("Guest file \"%s\" not found"), pcszWhat);
441	CASE_MSG(VERR_NET_HOST_NOT_FOUND, tr("Host name \"%s\", not found"), pcszWhat);
442	CASE_MSG(VERR_SHARING_VIOLATION , tr("Sharing violation for guest file \"%s\""), pcszWhat);
443	default:
444	strErr.printf(tr("Error %Rrc for guest file \"%s\" occurred\n"), rcGuest, pcszWhat);
445	break;
446	#undef CASE_MSG
447	}
448
449	return strErr;
450	}
451
452	/**
453	* Called when the guest side notifies the host of a file event.
454	*
455	* @returns VBox status code.
456	* @param pCbCtx Host callback context.
457	* @param pSvcCbData Host callback data.
458	*/
459	int GuestFile::i_onFileNotify(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData)
460	{
461	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
462	AssertPtrReturn(pSvcCbData, VERR_INVALID_POINTER);
463
464	LogFlowThisFuncEnter();
465
466	if (pSvcCbData->mParms < 3)
467	return VERR_INVALID_PARAMETER;
468
469	int idx = 1; /* Current parameter index. */
470	CALLBACKDATA_FILE_NOTIFY dataCb;
471	RT_ZERO(dataCb);
472	/* pSvcCb->mpaParms[0] always contains the context ID. */
473	HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.uType);
474	HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.rc);
475
476	int vrcGuest = (int)dataCb.rc; /* uint32_t vs. int. */
477
478	LogFlowThisFunc(("uType=%RU32, vrcGuest=%Rrc\n", dataCb.uType, vrcGuest));
479
480	if (RT_FAILURE(vrcGuest))
481	{
482	int vrc2 = i_setFileStatus(FileStatus_Error, vrcGuest);
483	AssertRC(vrc2);
484
485	/* Ignore rc, as the event to signal might not be there (anymore). */
486	signalWaitEventInternal(pCbCtx, vrcGuest, NULL /* pPayload */);
487	return VINF_SUCCESS; /* Report to the guest. */
488	}
489
490	AssertMsg(mObjectID == VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(pCbCtx->uContextID),
491	("File ID %RU32 does not match object ID %RU32\n", mObjectID,
492	VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(pCbCtx->uContextID)));
493
494	int vrc = VERR_NOT_SUPPORTED; /* Play safe by default. */
495
496	switch (dataCb.uType)
497	{
498	case GUEST_FILE_NOTIFYTYPE_ERROR:
499	{
500	vrc = i_setFileStatus(FileStatus_Error, vrcGuest);
501	break;
502	}
503
504	case GUEST_FILE_NOTIFYTYPE_OPEN:
505	{
506	if (pSvcCbData->mParms == 4)
507	{
508	vrc = HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.u.open.uHandle);
509	if (RT_FAILURE(vrc))
510	break;
511
512	/* Set the process status. */
513	vrc = i_setFileStatus(FileStatus_Open, vrcGuest);
514	}
515	break;
516	}
517
518	case GUEST_FILE_NOTIFYTYPE_CLOSE:
519	{
520	vrc = i_setFileStatus(FileStatus_Closed, vrcGuest);
521	break;
522	}
523
524	case GUEST_FILE_NOTIFYTYPE_READ:
525	{
526	if (pSvcCbData->mParms == 4)
527	{
528	vrc = HGCMSvcGetPv(&pSvcCbData->mpaParms[idx++], &dataCb.u.read.pvData,
529	&dataCb.u.read.cbData);
530	if (RT_FAILURE(vrc))
531	break;
532
533	const uint32_t cbRead = dataCb.u.read.cbData;
534
535	Log3ThisFunc(("cbRead=%RU32\n", cbRead));
536
537	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
538
539	mData.mOffCurrent += cbRead; /* Bogus for readAt, which is why we've got GUEST_FILE_NOTIFYTYPE_READ_OFFSET. */
540
541	alock.release();
542
543	com::SafeArray<BYTE> data((size_t)cbRead);
544	data.initFrom((BYTE *)dataCb.u.read.pvData, cbRead);
545
546	::FireGuestFileReadEvent(mEventSource, mSession, this, mData.mOffCurrent, cbRead, ComSafeArrayAsInParam(data));
547	}
548	break;
549	}
550
551	case GUEST_FILE_NOTIFYTYPE_READ_OFFSET:
552	{
553	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mParms == 5, ("mParms=%u\n", pSvcCbData->mParms),
554	vrc = VERR_WRONG_PARAMETER_COUNT);
555	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx].type == VBOX_HGCM_SVC_PARM_PTR,
556	("type=%u\n", pSvcCbData->mpaParms[idx].type),
557	vrc = VERR_WRONG_PARAMETER_TYPE);
558	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx + 1].type == VBOX_HGCM_SVC_PARM_64BIT,
559	("type=%u\n", pSvcCbData->mpaParms[idx].type),
560	vrc = VERR_WRONG_PARAMETER_TYPE);
561	BYTE const * const pbData = (BYTE const *)pSvcCbData->mpaParms[idx].u.pointer.addr;
562	uint32_t const cbRead = pSvcCbData->mpaParms[idx].u.pointer.size;
563	int64_t offNew = (int64_t)pSvcCbData->mpaParms[idx + 1].u.uint64;
564	Log3ThisFunc(("cbRead=%RU32 offNew=%RI64 (%#RX64)\n", cbRead, offNew, offNew));
565
566	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
567	if (offNew < 0) /* non-seekable */
568	offNew = mData.mOffCurrent + cbRead;
569	mData.mOffCurrent = offNew;
570	alock.release();
571
572	try
573	{
574	com::SafeArray<BYTE> data((size_t)cbRead);
575	data.initFrom(pbData, cbRead);
576	::FireGuestFileReadEvent(mEventSource, mSession, this, offNew, cbRead, ComSafeArrayAsInParam(data));
577	vrc = VINF_SUCCESS;
578	}
579	catch (std::bad_alloc &)
580	{
581	vrc = VERR_NO_MEMORY;
582	}
583	break;
584	}
585
586	case GUEST_FILE_NOTIFYTYPE_WRITE:
587	{
588	if (pSvcCbData->mParms == 4)
589	{
590	vrc = HGCMSvcGetU32(&pSvcCbData->mpaParms[idx++], &dataCb.u.write.cbWritten);
591	if (RT_FAILURE(vrc))
592	break;
593
594	const uint32_t cbWritten = dataCb.u.write.cbWritten;
595
596	Log3ThisFunc(("cbWritten=%RU32\n", cbWritten));
597
598	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
599
600	mData.mOffCurrent += cbWritten; /* Bogus for writeAt and append mode, thus GUEST_FILE_NOTIFYTYPE_WRITE_OFFSET. */
601
602	alock.release();
603
604	::FireGuestFileWriteEvent(mEventSource, mSession, this, mData.mOffCurrent, cbWritten);
605	}
606	break;
607	}
608
609	case GUEST_FILE_NOTIFYTYPE_WRITE_OFFSET:
610	{
611	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mParms == 5, ("mParms=%u\n", pSvcCbData->mParms),
612	vrc = VERR_WRONG_PARAMETER_COUNT);
613	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx].type == VBOX_HGCM_SVC_PARM_32BIT,
614	("type=%u\n", pSvcCbData->mpaParms[idx].type),
615	vrc = VERR_WRONG_PARAMETER_TYPE);
616	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx + 1].type == VBOX_HGCM_SVC_PARM_64BIT,
617	("type=%u\n", pSvcCbData->mpaParms[idx].type),
618	vrc = VERR_WRONG_PARAMETER_TYPE);
619	uint32_t const cbWritten = pSvcCbData->mpaParms[idx].u.uint32;
620	int64_t offNew = (int64_t)pSvcCbData->mpaParms[idx + 1].u.uint64;
621	Log3ThisFunc(("cbWritten=%RU32 offNew=%RI64 (%#RX64)\n", cbWritten, offNew, offNew));
622
623	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
624	if (offNew < 0) /* non-seekable */
625	offNew = mData.mOffCurrent + cbWritten;
626	mData.mOffCurrent = offNew;
627	alock.release();
628
629	HRESULT hrc2 = ::FireGuestFileWriteEvent(mEventSource, mSession, this, offNew, cbWritten);
630	vrc = SUCCEEDED(hrc2) ? VINF_SUCCESS : Global::vboxStatusCodeFromCOM(hrc2);
631	break;
632	}
633
634	case GUEST_FILE_NOTIFYTYPE_SEEK:
635	{
636	if (pSvcCbData->mParms == 4)
637	{
638	vrc = HGCMSvcGetU64(&pSvcCbData->mpaParms[idx++], &dataCb.u.seek.uOffActual);
639	if (RT_FAILURE(vrc))
640	break;
641
642	Log3ThisFunc(("uOffActual=%RU64\n", dataCb.u.seek.uOffActual));
643
644	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
645
646	mData.mOffCurrent = dataCb.u.seek.uOffActual;
647
648	alock.release();
649
650	::FireGuestFileOffsetChangedEvent(mEventSource, mSession, this, dataCb.u.seek.uOffActual, 0 /* Processed */);
651	}
652	break;
653	}
654
655	case GUEST_FILE_NOTIFYTYPE_TELL:
656	/* We don't issue any HOST_MSG_FILE_TELL, so we shouldn't get these notifications! */
657	AssertFailed();
658	break;
659
660	case GUEST_FILE_NOTIFYTYPE_SET_SIZE:
661	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mParms == 4, ("mParms=%u\n", pSvcCbData->mParms),
662	vrc = VERR_WRONG_PARAMETER_COUNT);
663	ASSERT_GUEST_MSG_STMT_BREAK(pSvcCbData->mpaParms[idx].type == VBOX_HGCM_SVC_PARM_64BIT,
664	("type=%u\n", pSvcCbData->mpaParms[idx].type),
665	vrc = VERR_WRONG_PARAMETER_TYPE);
666	dataCb.u.SetSize.cbSize = pSvcCbData->mpaParms[idx].u.uint64;
667	Log3ThisFunc(("cbSize=%RU64\n", dataCb.u.SetSize.cbSize));
668
669	::FireGuestFileSizeChangedEvent(mEventSource, mSession, this, dataCb.u.SetSize.cbSize);
670	vrc = VINF_SUCCESS;
671	break;
672
673	default:
674	break;
675	}
676
677	if (RT_SUCCESS(vrc))
678	{
679	try
680	{
681	GuestWaitEventPayload payload(dataCb.uType, &dataCb, sizeof(dataCb));
682
683	/* Ignore rc, as the event to signal might not be there (anymore). */
684	signalWaitEventInternal(pCbCtx, vrcGuest, &payload);
685	}
686	catch (int vrcEx) /* Thrown by GuestWaitEventPayload constructor. */
687	{
688	vrc = vrcEx;
689	}
690	}
691
692	LogFlowThisFunc(("uType=%RU32, rcGuest=%Rrc, rc=%Rrc\n", dataCb.uType, vrcGuest, vrc));
693	return vrc;
694	}
695
696	/**
697	* Called when the guest side of the file has been disconnected (closed, terminated, +++).
698	*
699	* @returns VBox status code.
700	* @param pCbCtx Host callback context.
701	* @param pSvcCbData Host callback data.
702	*/
703	int GuestFile::i_onGuestDisconnected(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData)
704	{
705	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
706	AssertPtrReturn(pSvcCbData, VERR_INVALID_POINTER);
707
708	int vrc = i_setFileStatus(FileStatus_Down, VINF_SUCCESS);
709
710	LogFlowFuncLeaveRC(vrc);
711	return vrc;
712	}
713
714	/**
715	* @copydoc GuestObject::i_onUnregister
716	*/
717	int GuestFile::i_onUnregister(void)
718	{
719	LogFlowThisFuncEnter();
720
721	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
722
723	int vrc = VINF_SUCCESS;
724
725	/*
726	* Note: The event source stuff holds references to this object,
727	* so make sure that this is cleaned up before calling uninit().
728	*/
729	if (!mEventSource.isNull())
730	{
731	mEventSource->UnregisterListener(mLocalListener);
732
733	mLocalListener.setNull();
734	unconst(mEventSource).setNull();
735	}
736
737	LogFlowFuncLeaveRC(vrc);
738	return vrc;
739	}
740
741	/**
742	* @copydoc GuestObject::i_onSessionStatusChange
743	*/
744	int GuestFile::i_onSessionStatusChange(GuestSessionStatus_T enmSessionStatus)
745	{
746	LogFlowThisFuncEnter();
747
748	int vrc = VINF_SUCCESS;
749
750	/* If the session now is in a terminated state, set the file status
751	* to "down", as there is not much else we can do now. */
752	if (GuestSession::i_isTerminated(enmSessionStatus))
753	vrc = i_setFileStatus(FileStatus_Down, 0 /* fileRc, ignored */);
754
755	LogFlowFuncLeaveRC(vrc);
756	return vrc;
757	}
758
759	/**
760	* Opens the file on the guest.
761	*
762	* @returns VBox status code.
763	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
764	* @param uTimeoutMS Timeout (in ms) to wait.
765	* @param prcGuest Where to return the guest error when VERR_GSTCTL_GUEST_ERROR
766	* was returned. Optional.
767	*/
768	int GuestFile::i_openFile(uint32_t uTimeoutMS, int *prcGuest)
769	{
770	AssertReturn(mData.mOpenInfo.mFilename.isNotEmpty(), VERR_INVALID_PARAMETER);
771
772	LogFlowThisFuncEnter();
773
774	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
775
776	LogFlowThisFunc(("strFile=%s, enmAccessMode=%d, enmOpenAction=%d, uCreationMode=%o, mfOpenEx=%#x\n",
777	mData.mOpenInfo.mFilename.c_str(), mData.mOpenInfo.mAccessMode, mData.mOpenInfo.mOpenAction,
778	mData.mOpenInfo.mCreationMode, mData.mOpenInfo.mfOpenEx));
779
780	/* Validate and translate open action. */
781	const char *pszOpenAction = NULL;
782	switch (mData.mOpenInfo.mOpenAction)
783	{
784	case FileOpenAction_OpenExisting: pszOpenAction = "oe"; break;
785	case FileOpenAction_OpenOrCreate: pszOpenAction = "oc"; break;
786	case FileOpenAction_CreateNew: pszOpenAction = "ce"; break;
787	case FileOpenAction_CreateOrReplace: pszOpenAction = "ca"; break;
788	case FileOpenAction_OpenExistingTruncated: pszOpenAction = "ot"; break;
789	case FileOpenAction_AppendOrCreate:
790	pszOpenAction = "oa"; /** @todo get rid of this one and implement AppendOnly/AppendRead. */
791	break;
792	default:
793	return VERR_INVALID_PARAMETER;
794	}
795
796	/* Validate and translate access mode. */
797	const char *pszAccessMode = NULL;
798	switch (mData.mOpenInfo.mAccessMode)
799	{
800	case FileAccessMode_ReadOnly: pszAccessMode = "r"; break;
801	case FileAccessMode_WriteOnly: pszAccessMode = "w"; break;
802	case FileAccessMode_ReadWrite: pszAccessMode = "r+"; break;
803	case FileAccessMode_AppendOnly: pszAccessMode = "a"; break;
804	case FileAccessMode_AppendRead: pszAccessMode = "a+"; break;
805	default: return VERR_INVALID_PARAMETER;
806	}
807
808	/* Validate and translate sharing mode. */
809	const char *pszSharingMode = NULL;
810	switch (mData.mOpenInfo.mSharingMode)
811	{
812	case FileSharingMode_All: pszSharingMode = ""; break;
813	case FileSharingMode_Read: RT_FALL_THRU();
814	case FileSharingMode_Write: RT_FALL_THRU();
815	case FileSharingMode_ReadWrite: RT_FALL_THRU();
816	case FileSharingMode_Delete: RT_FALL_THRU();
817	case FileSharingMode_ReadDelete: RT_FALL_THRU();
818	case FileSharingMode_WriteDelete: return VERR_NOT_IMPLEMENTED;
819	default: return VERR_INVALID_PARAMETER;
820	}
821
822	int vrc;
823
824	GuestWaitEvent *pEvent = NULL;
825	GuestEventTypes eventTypes;
826	try
827	{
828	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
829
830	vrc = registerWaitEvent(eventTypes, &pEvent);
831	}
832	catch (std::bad_alloc &)
833	{
834	vrc = VERR_NO_MEMORY;
835	}
836
837	if (RT_FAILURE(vrc))
838	return vrc;
839
840	/* Prepare HGCM call. */
841	VBOXHGCMSVCPARM paParms[8];
842	int i = 0;
843	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
844	HGCMSvcSetPv(&paParms[i++], (void*)mData.mOpenInfo.mFilename.c_str(),
845	(ULONG)mData.mOpenInfo.mFilename.length() + 1);
846	HGCMSvcSetStr(&paParms[i++], pszAccessMode);
847	HGCMSvcSetStr(&paParms[i++], pszOpenAction);
848	HGCMSvcSetStr(&paParms[i++], pszSharingMode);
849	HGCMSvcSetU32(&paParms[i++], mData.mOpenInfo.mCreationMode);
850	HGCMSvcSetU64(&paParms[i++], 0 /unused offset/);
851	/** @todo Next protocol version: add flags, replace strings, remove initial offset. */
852
853	alock.release(); /* Drop write lock before sending. */
854
855	vrc = sendMessage(HOST_MSG_FILE_OPEN, i, paParms);
856	if (RT_SUCCESS(vrc))
857	vrc = i_waitForStatusChange(pEvent, uTimeoutMS, NULL /* FileStatus */, prcGuest);
858
859	unregisterWaitEvent(pEvent);
860
861	LogFlowFuncLeaveRC(vrc);
862	return vrc;
863	}
864
865	/**
866	* Queries file system information from a guest file.
867	*
868	* @returns VBox status code.
869	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
870	* @param objData Where to store the file system object data on success.
871	* @param prcGuest Where to return the guest error when VERR_GSTCTL_GUEST_ERROR
872	* was returned. Optional.
873	*/
874	int GuestFile::i_queryInfo(GuestFsObjData &objData, int *prcGuest)
875	{
876	AssertPtr(mSession);
877	return mSession->i_fsQueryInfo(mData.mOpenInfo.mFilename, FALSE /* fFollowSymlinks */, objData, prcGuest);
878	}
879
880	/**
881	* Reads data from a guest file.
882	*
883	* @returns VBox status code.
884	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
885	* @param uSize Size (in bytes) to read.
886	* @param uTimeoutMS Timeout (in ms) to wait.
887	* @param pvData Where to store the read data on success.
888	* @param cbData Size (in bytes) of \a pvData on input.
889	* @param pcbRead Where to return to size (in bytes) read on success.
890	* Optional.
891	*/
892	int GuestFile::i_readData(uint32_t uSize, uint32_t uTimeoutMS,
893	void* pvData, uint32_t cbData, uint32_t* pcbRead)
894	{
895	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
896	AssertReturn(cbData, VERR_INVALID_PARAMETER);
897
898	LogFlowThisFunc(("uSize=%RU32, uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
899	uSize, uTimeoutMS, pvData, cbData));
900
901	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
902
903	int vrc;
904
905	GuestWaitEvent *pEvent = NULL;
906	GuestEventTypes eventTypes;
907	try
908	{
909	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
910	eventTypes.push_back(VBoxEventType_OnGuestFileRead);
911
912	vrc = registerWaitEvent(eventTypes, &pEvent);
913	}
914	catch (std::bad_alloc &)
915	{
916	vrc = VERR_NO_MEMORY;
917	}
918
919	if (RT_FAILURE(vrc))
920	return vrc;
921
922	/* Prepare HGCM call. */
923	VBOXHGCMSVCPARM paParms[4];
924	int i = 0;
925	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
926	HGCMSvcSetU32(&paParms[i++], mObjectID /* File handle */);
927	HGCMSvcSetU32(&paParms[i++], uSize /* Size (in bytes) to read */);
928
929	alock.release(); /* Drop write lock before sending. */
930
931	vrc = sendMessage(HOST_MSG_FILE_READ, i, paParms);
932	if (RT_SUCCESS(vrc))
933	{
934	uint32_t cbRead = 0;
935	vrc = i_waitForRead(pEvent, uTimeoutMS, pvData, cbData, &cbRead);
936	if (RT_SUCCESS(vrc))
937	{
938	LogFlowThisFunc(("cbRead=%RU32\n", cbRead));
939	if (pcbRead)
940	*pcbRead = cbRead;
941	}
942	else if (pEvent->HasGuestError()) /* Return guest rc if available. */
943	{
944	vrc = pEvent->GetGuestError();
945	}
946	}
947
948	unregisterWaitEvent(pEvent);
949
950	LogFlowFuncLeaveRC(vrc);
951	return vrc;
952	}
953
954	/**
955	* Reads data from a specific position from a guest file.
956	*
957	* @returns VBox status code.
958	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
959	* @param uOffset Offset (in bytes) to start reading from.
960	* @param uSize Size (in bytes) to read.
961	* @param uTimeoutMS Timeout (in ms) to wait.
962	* @param pvData Where to store the read data on success.
963	* @param cbData Size (in bytes) of \a pvData on input.
964	* @param pcbRead Where to return to size (in bytes) read on success.
965	* Optional.
966	*/
967	int GuestFile::i_readDataAt(uint64_t uOffset, uint32_t uSize, uint32_t uTimeoutMS,
968	void* pvData, size_t cbData, size_t* pcbRead)
969	{
970	LogFlowThisFunc(("uOffset=%RU64, uSize=%RU32, uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
971	uOffset, uSize, uTimeoutMS, pvData, cbData));
972
973	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
974
975	int vrc;
976
977	GuestWaitEvent *pEvent = NULL;
978	GuestEventTypes eventTypes;
979	try
980	{
981	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
982	eventTypes.push_back(VBoxEventType_OnGuestFileRead);
983
984	vrc = registerWaitEvent(eventTypes, &pEvent);
985	}
986	catch (std::bad_alloc &)
987	{
988	vrc = VERR_NO_MEMORY;
989	}
990
991	if (RT_FAILURE(vrc))
992	return vrc;
993
994	/* Prepare HGCM call. */
995	VBOXHGCMSVCPARM paParms[4];
996	int i = 0;
997	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
998	HGCMSvcSetU32(&paParms[i++], mObjectID /* File handle */);
999	HGCMSvcSetU64(&paParms[i++], uOffset /* Offset (in bytes) to start reading */);
1000	HGCMSvcSetU32(&paParms[i++], uSize /* Size (in bytes) to read */);
1001
1002	alock.release(); /* Drop write lock before sending. */
1003
1004	vrc = sendMessage(HOST_MSG_FILE_READ_AT, i, paParms);
1005	if (RT_SUCCESS(vrc))
1006	{
1007	uint32_t cbRead = 0;
1008	vrc = i_waitForRead(pEvent, uTimeoutMS, pvData, cbData, &cbRead);
1009	if (RT_SUCCESS(vrc))
1010	{
1011	LogFlowThisFunc(("cbRead=%RU32\n", cbRead));
1012
1013	if (pcbRead)
1014	*pcbRead = cbRead;
1015	}
1016	else if (pEvent->HasGuestError()) /* Return guest rc if available. */
1017	{
1018	vrc = pEvent->GetGuestError();
1019	}
1020	}
1021
1022	unregisterWaitEvent(pEvent);
1023
1024	LogFlowFuncLeaveRC(vrc);
1025	return vrc;
1026	}
1027
1028	/**
1029	* Seeks a guest file to a specific position.
1030	*
1031	* @returns VBox status code.
1032	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1033	* @param iOffset Offset (in bytes) to seek.
1034	* @param eSeekType Seek type to use.
1035	* @param uTimeoutMS Timeout (in ms) to wait.
1036	* @param puOffset Where to return the new current file position (in bytes) on success.
1037	*/
1038	int GuestFile::i_seekAt(int64_t iOffset, GUEST_FILE_SEEKTYPE eSeekType,
1039	uint32_t uTimeoutMS, uint64_t *puOffset)
1040	{
1041	LogFlowThisFunc(("iOffset=%RI64, uTimeoutMS=%RU32\n",
1042	iOffset, uTimeoutMS));
1043
1044	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
1045
1046	int vrc;
1047
1048	GuestWaitEvent *pEvent = NULL;
1049	GuestEventTypes eventTypes;
1050	try
1051	{
1052	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
1053	eventTypes.push_back(VBoxEventType_OnGuestFileOffsetChanged);
1054
1055	vrc = registerWaitEvent(eventTypes, &pEvent);
1056	}
1057	catch (std::bad_alloc &)
1058	{
1059	vrc = VERR_NO_MEMORY;
1060	}
1061
1062	if (RT_FAILURE(vrc))
1063	return vrc;
1064
1065	/* Prepare HGCM call. */
1066	VBOXHGCMSVCPARM paParms[4];
1067	int i = 0;
1068	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
1069	HGCMSvcSetU32(&paParms[i++], mObjectID /* File handle */);
1070	HGCMSvcSetU32(&paParms[i++], eSeekType /* Seek method */);
1071	/** @todo uint64_t vs. int64_t! */
1072	HGCMSvcSetU64(&paParms[i++], (uint64_t)iOffset /* Offset (in bytes) to start reading */);
1073
1074	alock.release(); /* Drop write lock before sending. */
1075
1076	vrc = sendMessage(HOST_MSG_FILE_SEEK, i, paParms);
1077	if (RT_SUCCESS(vrc))
1078	{
1079	uint64_t uOffset;
1080	vrc = i_waitForOffsetChange(pEvent, uTimeoutMS, &uOffset);
1081	if (RT_SUCCESS(vrc))
1082	{
1083	LogFlowThisFunc(("uOffset=%RU64\n", uOffset));
1084
1085	if (puOffset)
1086	*puOffset = uOffset;
1087	}
1088	else if (pEvent->HasGuestError()) /* Return guest rc if available. */
1089	{
1090	vrc = pEvent->GetGuestError();
1091	}
1092	}
1093
1094	unregisterWaitEvent(pEvent);
1095
1096	LogFlowFuncLeaveRC(vrc);
1097	return vrc;
1098	}
1099
1100	/**
1101	* Sets the current internal file object status.
1102	*
1103	* @returns VBox status code.
1104	* @param fileStatus New file status to set.
1105	* @param fileRc New result code to set.
1106	*
1107	* @note Takes the write lock.
1108	*/
1109	int GuestFile::i_setFileStatus(FileStatus_T fileStatus, int fileRc)
1110	{
1111	LogFlowThisFuncEnter();
1112
1113	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
1114
1115	LogFlowThisFunc(("oldStatus=%RU32, newStatus=%RU32, fileRc=%Rrc\n",
1116	mData.mStatus, fileStatus, fileRc));
1117
1118	#ifdef VBOX_STRICT
1119	if (fileStatus == FileStatus_Error)
1120	{
1121	AssertMsg(RT_FAILURE(fileRc), ("Guest rc must be an error (%Rrc)\n", fileRc));
1122	}
1123	else
1124	AssertMsg(RT_SUCCESS(fileRc), ("Guest rc must not be an error (%Rrc)\n", fileRc));
1125	#endif
1126
1127	if (mData.mStatus != fileStatus)
1128	{
1129	mData.mStatus = fileStatus;
1130	mData.mLastError = fileRc;
1131
1132	ComObjPtr<VirtualBoxErrorInfo> errorInfo;
1133	HRESULT hr = errorInfo.createObject();
1134	ComAssertComRC(hr);
1135	if (RT_FAILURE(fileRc))
1136	{
1137	hr = errorInfo->initEx(VBOX_E_IPRT_ERROR, fileRc,
1138	COM_IIDOF(IGuestFile), getComponentName(),
1139	i_guestErrorToString(fileRc, mData.mOpenInfo.mFilename.c_str()));
1140	ComAssertComRC(hr);
1141	}
1142
1143	alock.release(); /* Release lock before firing off event. */
1144
1145	::FireGuestFileStateChangedEvent(mEventSource, mSession, this, fileStatus, errorInfo);
1146	}
1147
1148	return VINF_SUCCESS;
1149	}
1150
1151	/**
1152	* Waits for a guest file offset change.
1153	*
1154	* @returns VBox status code.
1155	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1156	* @param pEvent Guest wait event to wait for.
1157	* @param uTimeoutMS Timeout (in ms) to wait.
1158	* @param puOffset Where to return the new offset (in bytes) on success.
1159	* Optional and can be NULL.
1160	*/
1161	int GuestFile::i_waitForOffsetChange(GuestWaitEvent *pEvent,
1162	uint32_t uTimeoutMS, uint64_t *puOffset)
1163	{
1164	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
1165
1166	VBoxEventType_T evtType;
1167	ComPtr<IEvent> pIEvent;
1168	int vrc = waitForEvent(pEvent, uTimeoutMS,
1169	&evtType, pIEvent.asOutParam());
1170	if (RT_SUCCESS(vrc))
1171	{
1172	if (evtType == VBoxEventType_OnGuestFileOffsetChanged)
1173	{
1174	if (puOffset)
1175	{
1176	ComPtr<IGuestFileOffsetChangedEvent> pFileEvent = pIEvent;
1177	Assert(!pFileEvent.isNull());
1178
1179	HRESULT hr = pFileEvent->COMGETTER(Offset)((LONG64*)puOffset);
1180	ComAssertComRC(hr);
1181	}
1182	}
1183	else
1184	vrc = VWRN_GSTCTL_OBJECTSTATE_CHANGED;
1185	}
1186
1187	return vrc;
1188	}
1189
1190	/**
1191	* Waits for reading from a guest file.
1192	*
1193	* @returns VBox status code.
1194	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1195	* @param pEvent Guest wait event to wait for.
1196	* @param uTimeoutMS Timeout (in ms) to wait.
1197	* @param pvData Where to store read file data on success.
1198	* @param cbData Size (in bytes) of \a pvData.
1199	* @param pcbRead Where to return the actual bytes read on success.
1200	* Optional and can be NULL.
1201	*/
1202	int GuestFile::i_waitForRead(GuestWaitEvent *pEvent, uint32_t uTimeoutMS,
1203	void pvData, size_t cbData, uint32_t pcbRead)
1204	{
1205	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
1206
1207	VBoxEventType_T evtType;
1208	ComPtr<IEvent> pIEvent;
1209	int vrc = waitForEvent(pEvent, uTimeoutMS,
1210	&evtType, pIEvent.asOutParam());
1211	if (RT_SUCCESS(vrc))
1212	{
1213	if (evtType == VBoxEventType_OnGuestFileRead)
1214	{
1215	vrc = VINF_SUCCESS;
1216
1217	ComPtr<IGuestFileReadEvent> pFileEvent = pIEvent;
1218	Assert(!pFileEvent.isNull());
1219
1220	if (pvData)
1221	{
1222	com::SafeArray <BYTE> data;
1223	HRESULT hrc1 = pFileEvent->COMGETTER(Data)(ComSafeArrayAsOutParam(data));
1224	ComAssertComRC(hrc1);
1225	const size_t cbRead = data.size();
1226	if (cbRead)
1227	{
1228	if (cbRead <= cbData)
1229	memcpy(pvData, data.raw(), cbRead);
1230	else
1231	vrc = VERR_BUFFER_OVERFLOW;
1232	}
1233	/* else: used to be VERR_NO_DATA, but that messes stuff up. */
1234
1235	if (pcbRead)
1236	{
1237	*pcbRead = (uint32_t)cbRead;
1238	Assert(*pcbRead == cbRead);
1239	}
1240	}
1241	else if (pcbRead)
1242	{
1243	*pcbRead = 0;
1244	HRESULT hrc2 = pFileEvent->COMGETTER(Processed)((ULONG *)pcbRead);
1245	ComAssertComRC(hrc2); NOREF(hrc2);
1246	}
1247	}
1248	else
1249	vrc = VWRN_GSTCTL_OBJECTSTATE_CHANGED;
1250	}
1251
1252	return vrc;
1253	}
1254
1255	/**
1256	* Waits for a guest file status change.
1257	*
1258	* @note Similar code in GuestProcess::i_waitForStatusChange() and
1259	* GuestSession::i_waitForStatusChange().
1260	*
1261	* @returns VBox status code.
1262	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1263	* @param pEvent Guest wait event to wait for.
1264	* @param uTimeoutMS Timeout (in ms) to wait.
1265	* @param pFileStatus Where to return the file status on success.
1266	* @param prcGuest Where to return the guest error when VERR_GSTCTL_GUEST_ERROR
1267	* was returned.
1268	*/
1269	int GuestFile::i_waitForStatusChange(GuestWaitEvent *pEvent, uint32_t uTimeoutMS,
1270	FileStatus_T pFileStatus, int prcGuest)
1271	{
1272	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
1273	/* pFileStatus is optional. */
1274
1275	VBoxEventType_T evtType;
1276	ComPtr<IEvent> pIEvent;
1277	int vrc = waitForEvent(pEvent, uTimeoutMS,
1278	&evtType, pIEvent.asOutParam());
1279	if (RT_SUCCESS(vrc))
1280	{
1281	Assert(evtType == VBoxEventType_OnGuestFileStateChanged);
1282	ComPtr<IGuestFileStateChangedEvent> pFileEvent = pIEvent;
1283	Assert(!pFileEvent.isNull());
1284
1285	HRESULT hr;
1286	if (pFileStatus)
1287	{
1288	hr = pFileEvent->COMGETTER(Status)(pFileStatus);
1289	ComAssertComRC(hr);
1290	}
1291
1292	ComPtr<IVirtualBoxErrorInfo> errorInfo;
1293	hr = pFileEvent->COMGETTER(Error)(errorInfo.asOutParam());
1294	ComAssertComRC(hr);
1295
1296	LONG lGuestRc;
1297	hr = errorInfo->COMGETTER(ResultDetail)(&lGuestRc);
1298	ComAssertComRC(hr);
1299
1300	LogFlowThisFunc(("resultDetail=%RI32 (%Rrc)\n",
1301	lGuestRc, lGuestRc));
1302
1303	if (RT_FAILURE((int)lGuestRc))
1304	vrc = VERR_GSTCTL_GUEST_ERROR;
1305
1306	if (prcGuest)
1307	*prcGuest = (int)lGuestRc;
1308	}
1309	/* waitForEvent may also return VERR_GSTCTL_GUEST_ERROR like we do above, so make prcGuest is set. */
1310	/** @todo r=bird: Andy, you seem to have forgotten this scenario. Showed up occasionally when
1311	* using the wrong password with a copyto command in a debug build on windows, error info
1312	* contained "Unknown Status -858993460 (0xcccccccc)". As you know windows fills the stack frames
1313	* with 0xcccccccc in debug builds to highlight use of uninitialized data, so that's what happened
1314	* here. It's actually good you didn't initialize lGuest, as it would be heck to find otherwise.
1315	*
1316	* I'm still not very impressed with the error managment or the usuefullness of the documentation
1317	* in this code, though the latter is getting better! */
1318	else if (vrc == VERR_GSTCTL_GUEST_ERROR && prcGuest)
1319	*prcGuest = pEvent->GuestResult();
1320	Assert(vrc != VERR_GSTCTL_GUEST_ERROR \|\| !prcGuest \|\| *prcGuest != (int)0xcccccccc);
1321
1322	return vrc;
1323	}
1324
1325	int GuestFile::i_waitForWrite(GuestWaitEvent *pEvent,
1326	uint32_t uTimeoutMS, uint32_t *pcbWritten)
1327	{
1328	AssertPtrReturn(pEvent, VERR_INVALID_POINTER);
1329
1330	VBoxEventType_T evtType;
1331	ComPtr<IEvent> pIEvent;
1332	int vrc = waitForEvent(pEvent, uTimeoutMS,
1333	&evtType, pIEvent.asOutParam());
1334	if (RT_SUCCESS(vrc))
1335	{
1336	if (evtType == VBoxEventType_OnGuestFileWrite)
1337	{
1338	if (pcbWritten)
1339	{
1340	ComPtr<IGuestFileWriteEvent> pFileEvent = pIEvent;
1341	Assert(!pFileEvent.isNull());
1342
1343	HRESULT hr = pFileEvent->COMGETTER(Processed)((ULONG*)pcbWritten);
1344	ComAssertComRC(hr);
1345	}
1346	}
1347	else
1348	vrc = VWRN_GSTCTL_OBJECTSTATE_CHANGED;
1349	}
1350
1351	return vrc;
1352	}
1353
1354	/**
1355	* Writes data to a guest file.
1356	*
1357	* @returns VBox status code.
1358	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1359	* @param uTimeoutMS Timeout (in ms) to wait.
1360	* @param pvData Data to write.
1361	* @param cbData Size (in bytes) of \a pvData to write.
1362	* @param pcbWritten Where to return to size (in bytes) written on success.
1363	* Optional.
1364	*/
1365	int GuestFile::i_writeData(uint32_t uTimeoutMS, const void *pvData, uint32_t cbData,
1366	uint32_t *pcbWritten)
1367	{
1368	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
1369	AssertReturn(cbData, VERR_INVALID_PARAMETER);
1370
1371	LogFlowThisFunc(("uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
1372	uTimeoutMS, pvData, cbData));
1373
1374	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
1375
1376	int vrc;
1377
1378	GuestWaitEvent *pEvent = NULL;
1379	GuestEventTypes eventTypes;
1380	try
1381	{
1382	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
1383	eventTypes.push_back(VBoxEventType_OnGuestFileWrite);
1384
1385	vrc = registerWaitEvent(eventTypes, &pEvent);
1386	}
1387	catch (std::bad_alloc &)
1388	{
1389	vrc = VERR_NO_MEMORY;
1390	}
1391
1392	if (RT_FAILURE(vrc))
1393	return vrc;
1394
1395	/* Prepare HGCM call. */
1396	VBOXHGCMSVCPARM paParms[8];
1397	int i = 0;
1398	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
1399	HGCMSvcSetU32(&paParms[i++], mObjectID /* File handle */);
1400	HGCMSvcSetU32(&paParms[i++], cbData /* Size (in bytes) to write */);
1401	HGCMSvcSetPv (&paParms[i++], unconst(pvData), cbData);
1402
1403	alock.release(); /* Drop write lock before sending. */
1404
1405	vrc = sendMessage(HOST_MSG_FILE_WRITE, i, paParms);
1406	if (RT_SUCCESS(vrc))
1407	{
1408	uint32_t cbWritten = 0;
1409	vrc = i_waitForWrite(pEvent, uTimeoutMS, &cbWritten);
1410	if (RT_SUCCESS(vrc))
1411	{
1412	LogFlowThisFunc(("cbWritten=%RU32\n", cbWritten));
1413	if (pcbWritten)
1414	*pcbWritten = cbWritten;
1415	}
1416	else if (pEvent->HasGuestError()) /* Return guest rc if available. */
1417	{
1418	vrc = pEvent->GetGuestError();
1419	}
1420	}
1421
1422	unregisterWaitEvent(pEvent);
1423
1424	LogFlowFuncLeaveRC(vrc);
1425	return vrc;
1426	}
1427
1428
1429	/**
1430	* Writes data to a specific position to a guest file.
1431	*
1432	* @returns VBox status code.
1433	* @retval VERR_GSTCTL_GUEST_ERROR when an error from the guest side has been received.
1434	* @param uOffset Offset (in bytes) to start writing at.
1435	* @param uTimeoutMS Timeout (in ms) to wait.
1436	* @param pvData Data to write.
1437	* @param cbData Size (in bytes) of \a pvData to write.
1438	* @param pcbWritten Where to return to size (in bytes) written on success.
1439	* Optional.
1440	*/
1441	int GuestFile::i_writeDataAt(uint64_t uOffset, uint32_t uTimeoutMS,
1442	const void pvData, uint32_t cbData, uint32_t pcbWritten)
1443	{
1444	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
1445	AssertReturn(cbData, VERR_INVALID_PARAMETER);
1446
1447	LogFlowThisFunc(("uOffset=%RU64, uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
1448	uOffset, uTimeoutMS, pvData, cbData));
1449
1450	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
1451
1452	int vrc;
1453
1454	GuestWaitEvent *pEvent = NULL;
1455	GuestEventTypes eventTypes;
1456	try
1457	{
1458	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
1459	eventTypes.push_back(VBoxEventType_OnGuestFileWrite);
1460
1461	vrc = registerWaitEvent(eventTypes, &pEvent);
1462	}
1463	catch (std::bad_alloc &)
1464	{
1465	vrc = VERR_NO_MEMORY;
1466	}
1467
1468	if (RT_FAILURE(vrc))
1469	return vrc;
1470
1471	/* Prepare HGCM call. */
1472	VBOXHGCMSVCPARM paParms[8];
1473	int i = 0;
1474	HGCMSvcSetU32(&paParms[i++], pEvent->ContextID());
1475	HGCMSvcSetU32(&paParms[i++], mObjectID /* File handle */);
1476	HGCMSvcSetU64(&paParms[i++], uOffset /* Offset where to starting writing */);
1477	HGCMSvcSetU32(&paParms[i++], cbData /* Size (in bytes) to write */);
1478	HGCMSvcSetPv (&paParms[i++], unconst(pvData), cbData);
1479
1480	alock.release(); /* Drop write lock before sending. */
1481
1482	vrc = sendMessage(HOST_MSG_FILE_WRITE_AT, i, paParms);
1483	if (RT_SUCCESS(vrc))
1484	{
1485	uint32_t cbWritten = 0;
1486	vrc = i_waitForWrite(pEvent, uTimeoutMS, &cbWritten);
1487	if (RT_SUCCESS(vrc))
1488	{
1489	LogFlowThisFunc(("cbWritten=%RU32\n", cbWritten));
1490	if (pcbWritten)
1491	*pcbWritten = cbWritten;
1492	}
1493	else if (pEvent->HasGuestError()) /* Return guest rc if available. */
1494	{
1495	vrc = pEvent->GetGuestError();
1496	}
1497	}
1498
1499	unregisterWaitEvent(pEvent);
1500
1501	LogFlowFuncLeaveRC(vrc);
1502	return vrc;
1503	}
1504
1505	// Wrapped IGuestFile methods
1506	/////////////////////////////////////////////////////////////////////////////
1507	HRESULT GuestFile::close()
1508	{
1509	AutoCaller autoCaller(this);
1510	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1511
1512	LogFlowThisFuncEnter();
1513
1514	/* Close file on guest. */
1515	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1516	int vrc = i_closeFile(&vrcGuest);
1517	/* On failure don't return here, instead do all the cleanup
1518	* work first and then return an error. */
1519
1520	AssertPtr(mSession);
1521	int vrc2 = mSession->i_fileUnregister(this);
1522	if (RT_SUCCESS(vrc))
1523	vrc = vrc2;
1524
1525	if (RT_FAILURE(vrc))
1526	{
1527	if (vrc == VERR_GSTCTL_GUEST_ERROR)
1528	{
1529	GuestErrorInfo ge(GuestErrorInfo::Type_File, vrcGuest, mData.mOpenInfo.mFilename.c_str());
1530	return setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Closing guest file failed: %s"),
1531	GuestBase::getErrorAsString(ge).c_str());
1532	}
1533	return setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Closing guest file \"%s\" failed with %Rrc\n"),
1534	mData.mOpenInfo.mFilename.c_str(), vrc);
1535	}
1536
1537	LogFlowThisFunc(("Returning S_OK / vrc=%Rrc\n", vrc));
1538	return S_OK;
1539	}
1540
1541	HRESULT GuestFile::queryInfo(ComPtr<IFsObjInfo> &aObjInfo)
1542	{
1543	AutoCaller autoCaller(this);
1544	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1545
1546	LogFlowThisFuncEnter();
1547
1548	HRESULT hrc = S_OK;
1549
1550	GuestFsObjData fsObjData;
1551	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1552	int vrc = i_queryInfo(fsObjData, &vrcGuest);
1553	if (RT_SUCCESS(vrc))
1554	{
1555	ComObjPtr<GuestFsObjInfo> ptrFsObjInfo;
1556	hrc = ptrFsObjInfo.createObject();
1557	if (SUCCEEDED(hrc))
1558	{
1559	vrc = ptrFsObjInfo->init(fsObjData);
1560	if (RT_SUCCESS(vrc))
1561	hrc = ptrFsObjInfo.queryInterfaceTo(aObjInfo.asOutParam());
1562	else
1563	hrc = setErrorVrc(vrc,
1564	tr("Initialization of guest file object for \"%s\" failed: %Rrc"),
1565	mData.mOpenInfo.mFilename.c_str(), vrc);
1566	}
1567	}
1568	else
1569	{
1570	if (GuestProcess::i_isGuestError(vrc))
1571	{
1572	GuestErrorInfo ge(GuestErrorInfo::Type_ToolStat, vrcGuest, mData.mOpenInfo.mFilename.c_str());
1573	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Querying guest file information failed: %s"),
1574	GuestBase::getErrorAsString(ge).c_str());
1575	}
1576	else
1577	hrc = setErrorVrc(vrc,
1578	tr("Querying guest file information for \"%s\" failed: %Rrc"), mData.mOpenInfo.mFilename.c_str(), vrc);
1579	}
1580
1581	LogFlowFuncLeaveRC(vrc);
1582	return hrc;
1583	}
1584
1585	HRESULT GuestFile::querySize(LONG64 *aSize)
1586	{
1587	AutoCaller autoCaller(this);
1588	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1589
1590	LogFlowThisFuncEnter();
1591
1592	HRESULT hrc = S_OK;
1593
1594	GuestFsObjData fsObjData;
1595	int vrcGuest = VERR_IPE_UNINITIALIZED_STATUS;
1596	int vrc = i_queryInfo(fsObjData, &vrcGuest);
1597	if (RT_SUCCESS(vrc))
1598	{
1599	*aSize = fsObjData.mObjectSize;
1600	}
1601	else
1602	{
1603	if (GuestProcess::i_isGuestError(vrc))
1604	{
1605	GuestErrorInfo ge(GuestErrorInfo::Type_ToolStat, vrcGuest, mData.mOpenInfo.mFilename.c_str());
1606	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrcGuest, tr("Querying guest file size failed: %s"),
1607	GuestBase::getErrorAsString(ge).c_str());
1608	}
1609	else
1610	hrc = setErrorVrc(vrc, tr("Querying guest file size for \"%s\" failed: %Rrc"), mData.mOpenInfo.mFilename.c_str(), vrc);
1611	}
1612
1613	LogFlowFuncLeaveRC(vrc);
1614	return hrc;
1615	}
1616
1617	HRESULT GuestFile::read(ULONG aToRead, ULONG aTimeoutMS, std::vector<BYTE> &aData)
1618	{
1619	AutoCaller autoCaller(this);
1620	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1621
1622	if (aToRead == 0)
1623	return setError(E_INVALIDARG, tr("The size to read is zero"));
1624
1625	LogFlowThisFuncEnter();
1626
1627	/* Cap the read at 1MiB because that's all the guest will return anyway. */
1628	if (aToRead > _1M)
1629	aToRead = _1M;
1630
1631	aData.resize(aToRead);
1632
1633	HRESULT hrc = S_OK;
1634
1635	uint32_t cbRead;
1636	int vrc = i_readData(aToRead, aTimeoutMS,
1637	&aData.front(), aToRead, &cbRead);
1638
1639	if (RT_SUCCESS(vrc))
1640	{
1641	if (aData.size() != cbRead)
1642	aData.resize(cbRead);
1643	}
1644	else
1645	{
1646	aData.resize(0);
1647
1648	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Reading from file \"%s\" failed: %Rrc"),
1649	mData.mOpenInfo.mFilename.c_str(), vrc);
1650	}
1651
1652	LogFlowFuncLeaveRC(vrc);
1653	return hrc;
1654	}
1655
1656	HRESULT GuestFile::readAt(LONG64 aOffset, ULONG aToRead, ULONG aTimeoutMS, std::vector<BYTE> &aData)
1657	{
1658	AutoCaller autoCaller(this);
1659	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1660
1661	if (aToRead == 0)
1662	return setError(E_INVALIDARG, tr("The size to read for guest file \"%s\" is zero"), mData.mOpenInfo.mFilename.c_str());
1663
1664	LogFlowThisFuncEnter();
1665
1666	/* Cap the read at 1MiB because that's all the guest will return anyway. */
1667	if (aToRead > _1M)
1668	aToRead = _1M;
1669
1670	aData.resize(aToRead);
1671
1672	HRESULT hrc = S_OK;
1673
1674	size_t cbRead;
1675	int vrc = i_readDataAt(aOffset, aToRead, aTimeoutMS,
1676	&aData.front(), aToRead, &cbRead);
1677	if (RT_SUCCESS(vrc))
1678	{
1679	if (aData.size() != cbRead)
1680	aData.resize(cbRead);
1681	}
1682	else
1683	{
1684	aData.resize(0);
1685
1686	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Reading from file \"%s\" (at offset %RU64) failed: %Rrc"),
1687	mData.mOpenInfo.mFilename.c_str(), aOffset, vrc);
1688	}
1689
1690	LogFlowFuncLeaveRC(vrc);
1691	return hrc;
1692	}
1693
1694	HRESULT GuestFile::seek(LONG64 aOffset, FileSeekOrigin_T aWhence, LONG64 *aNewOffset)
1695	{
1696	AutoCaller autoCaller(this);
1697	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1698
1699	HRESULT hrc = S_OK;
1700
1701	GUEST_FILE_SEEKTYPE eSeekType;
1702	switch (aWhence)
1703	{
1704	case FileSeekOrigin_Begin:
1705	eSeekType = GUEST_FILE_SEEKTYPE_BEGIN;
1706	break;
1707
1708	case FileSeekOrigin_Current:
1709	eSeekType = GUEST_FILE_SEEKTYPE_CURRENT;
1710	break;
1711
1712	case FileSeekOrigin_End:
1713	eSeekType = GUEST_FILE_SEEKTYPE_END;
1714	break;
1715
1716	default:
1717	return setError(E_INVALIDARG, tr("Invalid seek type for guest file \"%s\" specified"),
1718	mData.mOpenInfo.mFilename.c_str());
1719	}
1720
1721	LogFlowThisFuncEnter();
1722
1723	uint64_t uNewOffset;
1724	int vrc = i_seekAt(aOffset, eSeekType,
1725	30 * 1000 /* 30s timeout */, &uNewOffset);
1726	if (RT_SUCCESS(vrc))
1727	*aNewOffset = RT_MIN(uNewOffset, (uint64_t)INT64_MAX);
1728	else
1729	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Seeking file \"%s\" (to offset %RI64) failed: %Rrc"),
1730	mData.mOpenInfo.mFilename.c_str(), aOffset, vrc);
1731
1732	LogFlowFuncLeaveRC(vrc);
1733	return hrc;
1734	}
1735
1736	HRESULT GuestFile::setACL(const com::Utf8Str &aAcl, ULONG aMode)
1737	{
1738	RT_NOREF(aAcl, aMode);
1739	ReturnComNotImplemented();
1740	}
1741
1742	HRESULT GuestFile::setSize(LONG64 aSize)
1743	{
1744	LogFlowThisFuncEnter();
1745
1746	/*
1747	* Validate.
1748	*/
1749	if (aSize < 0)
1750	return setError(E_INVALIDARG, tr("The size (%RI64) for guest file \"%s\" cannot be a negative value"),
1751	aSize, mData.mOpenInfo.mFilename.c_str());
1752
1753	/*
1754	* Register event callbacks.
1755	*/
1756	int vrc;
1757	GuestWaitEvent *pWaitEvent = NULL;
1758	GuestEventTypes lstEventTypes;
1759	try
1760	{
1761	lstEventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
1762	lstEventTypes.push_back(VBoxEventType_OnGuestFileSizeChanged);
1763	}
1764	catch (std::bad_alloc &)
1765	{
1766	return E_OUTOFMEMORY;
1767	}
1768
1769	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
1770
1771	vrc = registerWaitEvent(lstEventTypes, &pWaitEvent);
1772	if (RT_SUCCESS(vrc))
1773	{
1774	/*
1775	* Send of the HGCM message.
1776	*/
1777	VBOXHGCMSVCPARM aParms[3];
1778	HGCMSvcSetU32(&aParms[0], pWaitEvent->ContextID());
1779	HGCMSvcSetU32(&aParms[1], mObjectID /* File handle */);
1780	HGCMSvcSetU64(&aParms[2], aSize);
1781
1782	alock.release(); /* Drop write lock before sending. */
1783
1784	vrc = sendMessage(HOST_MSG_FILE_SET_SIZE, RT_ELEMENTS(aParms), aParms);
1785	if (RT_SUCCESS(vrc))
1786	{
1787	/*
1788	* Wait for the event.
1789	*/
1790	VBoxEventType_T enmEvtType;
1791	ComPtr<IEvent> pIEvent;
1792	vrc = waitForEvent(pWaitEvent, RT_MS_1MIN / 2, &enmEvtType, pIEvent.asOutParam());
1793	if (RT_SUCCESS(vrc))
1794	{
1795	if (enmEvtType == VBoxEventType_OnGuestFileSizeChanged)
1796	vrc = VINF_SUCCESS;
1797	else
1798	vrc = VWRN_GSTCTL_OBJECTSTATE_CHANGED;
1799	}
1800	if (RT_FAILURE(vrc) && pWaitEvent->HasGuestError()) /* Return guest rc if available. */
1801	vrc = pWaitEvent->GetGuestError();
1802	}
1803
1804	/*
1805	* Unregister the wait event and deal with error reporting if needed.
1806	*/
1807	unregisterWaitEvent(pWaitEvent);
1808	}
1809	HRESULT hrc;
1810	if (RT_SUCCESS(vrc))
1811	hrc = S_OK;
1812	else
1813	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc,
1814	tr("Setting the guest file size of \"%s\" to %RU64 (%#RX64) bytes failed: %Rrc", "", aSize),
1815	mData.mOpenInfo.mFilename.c_str(), aSize, aSize, vrc);
1816	LogFlowFuncLeaveRC(vrc);
1817	return hrc;
1818	}
1819
1820	HRESULT GuestFile::write(const std::vector<BYTE> &aData, ULONG aTimeoutMS, ULONG *aWritten)
1821	{
1822	AutoCaller autoCaller(this);
1823	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1824
1825	if (aData.size() == 0)
1826	return setError(E_INVALIDARG, tr("No data to write specified"), mData.mOpenInfo.mFilename.c_str());
1827
1828	LogFlowThisFuncEnter();
1829
1830	HRESULT hrc = S_OK;
1831
1832	const uint32_t cbData = (uint32_t)aData.size();
1833	const void pvData = (void )&aData.front();
1834	int vrc = i_writeData(aTimeoutMS, pvData, cbData, (uint32_t*)aWritten);
1835	if (RT_FAILURE(vrc))
1836	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc, tr("Writing %zu bytes to guest file \"%s\" failed: %Rrc", "", aData.size()),
1837	aData.size(), mData.mOpenInfo.mFilename.c_str(), vrc);
1838
1839	LogFlowFuncLeaveRC(vrc);
1840	return hrc;
1841	}
1842
1843	HRESULT GuestFile::writeAt(LONG64 aOffset, const std::vector<BYTE> &aData, ULONG aTimeoutMS, ULONG *aWritten)
1844	{
1845	AutoCaller autoCaller(this);
1846	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1847
1848	if (aData.size() == 0)
1849	return setError(E_INVALIDARG, tr("No data to write at for guest file \"%s\" specified"), mData.mOpenInfo.mFilename.c_str());
1850
1851	LogFlowThisFuncEnter();
1852
1853	HRESULT hrc = S_OK;
1854
1855	const uint32_t cbData = (uint32_t)aData.size();
1856	const void pvData = (void )&aData.front();
1857	int vrc = i_writeDataAt(aOffset, aTimeoutMS, pvData, cbData, (uint32_t*)aWritten);
1858	if (RT_FAILURE(vrc))
1859	hrc = setErrorBoth(VBOX_E_IPRT_ERROR, vrc,
1860	tr("Writing %zu bytes to file \"%s\" (at offset %RU64) failed: %Rrc", "", aData.size()),
1861	aData.size(), mData.mOpenInfo.mFilename.c_str(), aOffset, vrc);
1862
1863	LogFlowFuncLeaveRC(vrc);
1864	return hrc;
1865	}
1866

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source: vbox/trunk/src/VBox/Main/src-client/GuestFileImpl.cpp@ 94967

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