GuestFileImpl.cpp@ 45418

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1
2	/* $Id: GuestFileImpl.cpp 45418 2013-04-08 22:10:10Z vboxsync $ */
3	/** @file
4	* VirtualBox Main - Guest file handling.
5	*/
6
7	/*
8	* Copyright (C) 2012-2013 Oracle Corporation
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.215389.xyz. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*/
18
19
20	/*******************************************************************************
21	* Header Files *
22	*******************************************************************************/
23	#include "GuestErrorInfoImpl.h"
24	#include "GuestFileImpl.h"
25	#include "GuestSessionImpl.h"
26	#include "GuestCtrlImplPrivate.h"
27	#include "ConsoleImpl.h"
28
29	#include "Global.h"
30	#include "AutoCaller.h"
31	#include "VBoxEvents.h"
32
33	#include <iprt/cpp/utils.h> /* For unconst(). */
34	#include <iprt/file.h>
35	#include <VBox/com/array.h>
36
37	#ifdef LOG_GROUP
38	#undef LOG_GROUP
39	#endif
40	#define LOG_GROUP LOG_GROUP_GUEST_CONTROL
41	#include <VBox/log.h>
42
43
44	// constructor / destructor
45	/////////////////////////////////////////////////////////////////////////////
46
47	DEFINE_EMPTY_CTOR_DTOR(GuestFile)
48
49	HRESULT GuestFile::FinalConstruct(void)
50	{
51	LogFlowThisFunc(("\n"));
52	return BaseFinalConstruct();
53	}
54
55	void GuestFile::FinalRelease(void)
56	{
57	LogFlowThisFuncEnter();
58	uninit();
59	BaseFinalRelease();
60	LogFlowThisFuncLeave();
61	}
62
63	// public initializer/uninitializer for internal purposes only
64	/////////////////////////////////////////////////////////////////////////////
65
66	/**
67	* Initializes a file object but does not open the file on the guest
68	* yet. This is done in the dedidcated openFile call.
69	*
70	* @return IPRT status code.
71	* @param pConsole Pointer to console object.
72	* @param pSession Pointer to session object.
73	* @param uFileID Host-based file ID (part of the context ID).
74	* @param openInfo File opening information.
75	*/
76	int GuestFile::init(Console pConsole, GuestSession pSession, ULONG uFileID, const GuestFileOpenInfo &openInfo)
77	{
78	LogFlowThisFunc(("pConsole=%p, pSession=%p, uFileID=%RU32, strPath=%s\n",
79	pConsole, pSession, uFileID, openInfo.mFileName.c_str()));
80
81	AssertPtrReturn(pConsole, VERR_INVALID_POINTER);
82	AssertPtrReturn(pSession, VERR_INVALID_POINTER);
83
84	/* Enclose the state transition NotReady->InInit->Ready. */
85	AutoInitSpan autoInitSpan(this);
86	AssertReturn(autoInitSpan.isOk(), VERR_OBJECT_DESTROYED);
87
88	int vrc = bindToSession(pConsole, pSession, uFileID /* Object ID */);
89	if (RT_SUCCESS(vrc))
90	{
91	mData.mID = 0;
92	mData.mInitialSize = 0;
93	mData.mStatus = FileStatus_Undefined;
94
95	unconst(mEventSource).createObject();
96	HRESULT hr = mEventSource->init(static_cast<IGuestFile*>(this));
97	if (FAILED(hr))
98	vrc = VERR_COM_UNEXPECTED;
99	}
100
101	if (RT_SUCCESS(vrc))
102	{
103	/* Confirm a successful initialization when it's the case. */
104	autoInitSpan.setSucceeded();
105	}
106	else
107	autoInitSpan.setFailed();
108
109	LogFlowFuncLeaveRC(vrc);
110	return vrc;
111	}
112
113	/**
114	* Uninitializes the instance.
115	* Called from FinalRelease().
116	*/
117	void GuestFile::uninit(void)
118	{
119	LogFlowThisFunc(("\n"));
120
121	/* Enclose the state transition Ready->InUninit->NotReady. */
122	AutoUninitSpan autoUninitSpan(this);
123	if (autoUninitSpan.uninitDone())
124	return;
125
126	#ifdef VBOX_WITH_GUEST_CONTROL
127	unconst(mEventSource).setNull();
128	#endif
129
130	LogFlowThisFuncLeave();
131	}
132
133	// implementation of public getters/setters for attributes
134	/////////////////////////////////////////////////////////////////////////////
135
136	STDMETHODIMP GuestFile::COMGETTER(CreationMode)(ULONG *aCreationMode)
137	{
138	#ifndef VBOX_WITH_GUEST_CONTROL
139	ReturnComNotImplemented();
140	#else
141	AutoCaller autoCaller(this);
142	if (FAILED(autoCaller.rc())) return autoCaller.rc();
143
144	CheckComArgOutPointerValid(aCreationMode);
145
146	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
147
148	*aCreationMode = mData.mOpenInfo.mCreationMode;
149
150	return S_OK;
151	#endif /* VBOX_WITH_GUEST_CONTROL */
152	}
153
154	/** @todo For 4.3: Change ULONG* to BSTR* ?*/
155	STDMETHODIMP GuestFile::COMGETTER(Disposition)(ULONG *aDisposition)
156	{
157	#ifndef VBOX_WITH_GUEST_CONTROL
158	ReturnComNotImplemented();
159	#else
160	AutoCaller autoCaller(this);
161	if (FAILED(autoCaller.rc())) return autoCaller.rc();
162
163	CheckComArgOutPointerValid(aDisposition);
164
165	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
166
167	*aDisposition = getDispositionFromString(mData.mOpenInfo.mDisposition);
168
169	return S_OK;
170	#endif /* VBOX_WITH_GUEST_CONTROL */
171	}
172
173	STDMETHODIMP GuestFile::COMGETTER(FileName)(BSTR *aFileName)
174	{
175	#ifndef VBOX_WITH_GUEST_CONTROL
176	ReturnComNotImplemented();
177	#else
178	AutoCaller autoCaller(this);
179	if (FAILED(autoCaller.rc())) return autoCaller.rc();
180
181	CheckComArgOutPointerValid(aFileName);
182
183	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
184
185	mData.mOpenInfo.mFileName.cloneTo(aFileName);
186
187	return S_OK;
188	#endif /* VBOX_WITH_GUEST_CONTROL */
189	}
190
191	STDMETHODIMP GuestFile::COMGETTER(InitialSize)(LONG64 *aInitialSize)
192	{
193	#ifndef VBOX_WITH_GUEST_CONTROL
194	ReturnComNotImplemented();
195	#else
196	AutoCaller autoCaller(this);
197	if (FAILED(autoCaller.rc())) return autoCaller.rc();
198
199	CheckComArgOutPointerValid(aInitialSize);
200
201	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
202
203	*aInitialSize = mData.mInitialSize;
204
205	return S_OK;
206	#endif /* VBOX_WITH_GUEST_CONTROL */
207	}
208
209	STDMETHODIMP GuestFile::COMGETTER(Offset)(LONG64 *aOffset)
210	{
211	#ifndef VBOX_WITH_GUEST_CONTROL
212	ReturnComNotImplemented();
213	#else
214	AutoCaller autoCaller(this);
215	if (FAILED(autoCaller.rc())) return autoCaller.rc();
216
217	CheckComArgOutPointerValid(aOffset);
218
219	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
220
221	*aOffset = mData.mOffCurrent;
222
223	return S_OK;
224	#endif /* VBOX_WITH_GUEST_CONTROL */
225	}
226
227	/** @todo For 4.3: Change ULONG* to BSTR* ?*/
228	STDMETHODIMP GuestFile::COMGETTER(OpenMode)(ULONG *aOpenMode)
229	{
230	#ifndef VBOX_WITH_GUEST_CONTROL
231	ReturnComNotImplemented();
232	#else
233	AutoCaller autoCaller(this);
234	if (FAILED(autoCaller.rc())) return autoCaller.rc();
235
236	CheckComArgOutPointerValid(aOpenMode);
237
238	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
239
240	*aOpenMode = getOpenModeFromString(mData.mOpenInfo.mOpenMode);
241
242	return S_OK;
243	#endif /* VBOX_WITH_GUEST_CONTROL */
244	}
245
246	STDMETHODIMP GuestFile::COMGETTER(Status)(FileStatus_T *aStatus)
247	{
248	#ifndef VBOX_WITH_GUEST_CONTROL
249	ReturnComNotImplemented();
250	#else
251	LogFlowThisFuncEnter();
252
253	AutoCaller autoCaller(this);
254	if (FAILED(autoCaller.rc())) return autoCaller.rc();
255
256	AutoReadLock alock(this COMMA_LOCKVAL_SRC_POS);
257
258	*aStatus = mData.mStatus;
259
260	return S_OK;
261	#endif /* VBOX_WITH_GUEST_CONTROL */
262	}
263
264	// private methods
265	/////////////////////////////////////////////////////////////////////////////
266
267	int GuestFile::callbackDispatcher(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCb)
268	{
269	#ifdef DEBUG
270	LogFlowThisFunc(("strName=%s, uContextID=%RU32, uFunction=%RU32, pSvcCb=%p\n",
271	mData.mOpenInfo.mFileName.c_str(), pCbCtx->uContextID, pCbCtx->uFunction, pSvcCb));
272	#endif
273	AssertPtrReturn(pSvcCb, VERR_INVALID_POINTER);
274
275	AutoWriteLock alock(this COMMA_LOCKVAL_SRC_POS);
276
277	int vrc;
278	switch (pCbCtx->uFunction)
279	{
280	case GUEST_DISCONNECTED:
281	vrc = onGuestDisconnected(pCbCtx, pSvcCb);
282	break;
283
284	case GUEST_FILE_NOTIFY:
285	vrc = onFileNotify(pCbCtx, pSvcCb);
286	break;
287
288	default:
289	/* Silently ignore not implemented functions. */
290	vrc = VERR_NOT_SUPPORTED;
291	break;
292	}
293
294	#ifdef DEBUG
295	LogFlowFuncLeaveRC(vrc);
296	#endif
297	return vrc;
298	}
299
300	int GuestFile::closeFile(int *pGuestRc)
301	{
302	LogFlowThisFunc(("strFile=%s\n", mData.mOpenInfo.mFileName.c_str()));
303
304	uint32_t uContextID;
305	int vrc = generateContextID(mSession->getId(), mObjectID,
306	&uContextID);
307	if (RT_SUCCESS(vrc))
308	{
309	/* Prepare HGCM call. */
310	VBOXHGCMSVCPARM paParms[4];
311	int i = 0;
312	paParms[i++].setUInt32(mData.mID /* Guest file ID */);
313
314	vrc = sendCommand(HOST_FILE_CLOSE, i, paParms);
315	if (RT_SUCCESS(vrc))
316	vrc = waitForStatusChange(30 * 1000 /* Timeout in ms */,
317	NULL /* FileStatus */);
318	}
319
320	LogFlowFuncLeaveRC(vrc);
321	return vrc;
322	}
323
324	/* static */
325	uint32_t GuestFile::getDispositionFromString(const Utf8Str &strDisposition)
326	{
327	return 0; /** @todo Implement me! */
328	}
329
330	/* static */
331	uint32_t GuestFile::getOpenModeFromString(const Utf8Str &strOpenMode)
332	{
333	uint32_t uOpenMode = 0;
334
335	const char *pc = strOpenMode.c_str();
336	while (*pc != '\0')
337	{
338	switch (*pc++)
339	{
340	case 'r':
341	uOpenMode \|= RTFILE_O_READ;
342	break;
343
344	case 'w':
345	uOpenMode \|= RTFILE_O_WRITE;
346	break;
347
348	default:
349	/* Silently skip unknown values. */
350	break;
351	}
352	}
353
354	return uOpenMode;
355	}
356
357	/* static */
358	Utf8Str GuestFile::guestErrorToString(int guestRc)
359	{
360	Utf8Str strError;
361
362	/** @todo pData->u32Flags: int vs. uint32 -- IPRT errors are negative !!! */
363	switch (guestRc)
364	{
365	case VERR_INVALID_VM_HANDLE:
366	strError += Utf8StrFmt(tr("VMM device is not available (is the VM running?)"));
367	break;
368
369	case VERR_HGCM_SERVICE_NOT_FOUND:
370	strError += Utf8StrFmt(tr("The guest execution service is not available"));
371	break;
372
373	case VERR_TIMEOUT:
374	strError += Utf8StrFmt(tr("The guest did not respond within time"));
375	break;
376
377	case VERR_CANCELLED:
378	strError += Utf8StrFmt(tr("The session operation was canceled"));
379	break;
380
381	case VERR_MAX_PROCS_REACHED:
382	strError += Utf8StrFmt(tr("Maximum number of concurrent guest files has been reached"));
383	break;
384
385	case VERR_NOT_EQUAL: /** @todo Imprecise to the user; can mean anything and all. */
386	strError += Utf8StrFmt(tr("Unable to retrieve requested information"));
387	break;
388
389	case VERR_NOT_FOUND:
390	strError += Utf8StrFmt(tr("The guest execution service is not ready (yet)"));
391	break;
392
393	default:
394	strError += Utf8StrFmt("%Rrc", guestRc);
395	break;
396	}
397
398	return strError;
399	}
400
401	int GuestFile::onFileNotify(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData)
402	{
403	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
404	AssertPtrReturn(pSvcCbData, VERR_INVALID_POINTER);
405
406	if (pSvcCbData->mParms < 3)
407	return VERR_INVALID_PARAMETER;
408
409	int vrc = VINF_SUCCESS;
410
411	int idx = 0; /* Current parameter index. */
412	CALLBACKDATA_FILE_NOTIFY dataCb;
413	/* pSvcCb->mpaParms[0] always contains the context ID. */
414	pSvcCbData->mpaParms[idx++].getUInt32(&dataCb.uType);
415	pSvcCbData->mpaParms[idx++].getUInt32(&dataCb.rc);
416
417	int guestRc = (int)dataCb.rc; /* uint32_t vs. int. */
418
419	switch (dataCb.uType)
420	{
421	case GUEST_FILE_NOTIFYTYPE_ERROR:
422	{
423	AssertMsg(mData.mStatus != FileStatus_Error, ("File status already set to error\n"));
424
425	int rc2 = setFileStatus(FileStatus_Error, guestRc);
426	AssertRC(rc2);
427	break;
428	}
429
430	case GUEST_FILE_NOTIFYTYPE_OPEN:
431	{
432	if (pSvcCbData->mParms == 4)
433	{
434	pSvcCbData->mpaParms[idx++].getUInt32(&dataCb.u.open.uHandle);
435
436	AssertMsg(mData.mID == 0, ("File ID already set to %RU32\n", mData.mID));
437	mData.mID = dataCb.u.open.uHandle;
438	AssertMsg(mData.mID == VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(pCbCtx->uContextID),
439	("File ID %RU32 does not match context ID %RU32\n", mData.mID,
440	VBOX_GUESTCTRL_CONTEXTID_GET_OBJECT(pCbCtx->uContextID)));
441
442	/* Set the process status. */
443	int rc2 = setFileStatus(FileStatus_Open, guestRc);
444	if (RT_SUCCESS(vrc))
445	vrc = rc2;
446	}
447	else
448	vrc = VERR_NOT_SUPPORTED;
449
450	break;
451	}
452
453	case GUEST_FILE_NOTIFYTYPE_CLOSE:
454	{
455	int rc2 = setFileStatus(FileStatus_Closed, guestRc);
456	AssertRC(rc2);
457
458	break;
459	}
460
461	case GUEST_FILE_NOTIFYTYPE_READ:
462	if (pSvcCbData->mParms == 4)
463	{
464	pSvcCbData->mpaParms[idx++].getPointer(&dataCb.u.read.pvData,
465	&dataCb.u.read.cbData);
466	uint32_t cbRead = dataCb.u.read.cbData;
467	if (cbRead)
468	{
469	mData.mOffCurrent += cbRead;
470
471	com::SafeArray<BYTE> data((size_t)cbRead);
472	data.initFrom((BYTE*)dataCb.u.read.pvData, cbRead);
473	fireGuestFileReadEvent(mEventSource, mSession, this, mData.mOffCurrent,
474	cbRead, ComSafeArrayAsInParam(data));
475	}
476	}
477	else
478	vrc = VERR_NOT_SUPPORTED;
479	break;
480
481	case GUEST_FILE_NOTIFYTYPE_WRITE:
482	if (pSvcCbData->mParms == 4)
483	{
484	pSvcCbData->mpaParms[idx++].getUInt32(&dataCb.u.write.cbWritten);
485
486	mData.mOffCurrent += dataCb.u.write.cbWritten;
487
488	if (dataCb.u.write.cbWritten)
489	fireGuestFileWriteEvent(mEventSource, mSession, this, mData.mOffCurrent,
490	dataCb.u.write.cbWritten);
491	}
492	else
493	vrc = VERR_NOT_SUPPORTED;
494	break;
495
496	case GUEST_FILE_NOTIFYTYPE_SEEK:
497	if (pSvcCbData->mParms == 4)
498	{
499	pSvcCbData->mpaParms[idx++].getUInt64(&dataCb.u.seek.uOffActual);
500
501	mData.mOffCurrent = dataCb.u.seek.uOffActual;
502
503	if (dataCb.u.seek.uOffActual)
504	fireGuestFileOffsetChangedEvent(mEventSource, mSession, this,
505	mData.mOffCurrent, 0 /* Processed */);
506	}
507	else
508	vrc = VERR_NOT_SUPPORTED;
509	break;
510
511	case GUEST_FILE_NOTIFYTYPE_TELL:
512	if (pSvcCbData->mParms == 4)
513	{
514	pSvcCbData->mpaParms[idx++].getUInt64(&dataCb.u.tell.uOffActual);
515
516	if (mData.mOffCurrent != dataCb.u.tell.uOffActual)
517	{
518	mData.mOffCurrent = dataCb.u.tell.uOffActual;
519
520	fireGuestFileOffsetChangedEvent(mEventSource, mSession, this,
521	mData.mOffCurrent, 0 /* Processed */);
522	}
523	}
524	else
525	vrc = VERR_NOT_SUPPORTED;
526	break;
527
528	default:
529	vrc = VERR_NOT_SUPPORTED;
530	break;
531	}
532
533	LogFlowThisFunc(("strName=%s, uType=%RU32, guestRc=%Rrc\n",
534	mData.mOpenInfo.mFileName.c_str(), dataCb.uType, dataCb.rc));
535
536	if (RT_SUCCESS(vrc))
537	{
538	/* Nothing to do here yet. */
539	}
540	else if (vrc == VERR_NOT_SUPPORTED)
541	{
542	/* Also let the callback know. */
543	guestRc = VERR_NOT_SUPPORTED;
544	}
545
546	LogFlowFuncLeaveRC(vrc);
547	return vrc;
548	}
549
550	int GuestFile::onGuestDisconnected(PVBOXGUESTCTRLHOSTCBCTX pCbCtx, PVBOXGUESTCTRLHOSTCALLBACK pSvcCbData)
551	{
552	AssertPtrReturn(pCbCtx, VERR_INVALID_POINTER);
553	AssertPtrReturn(pSvcCbData, VERR_INVALID_POINTER);
554
555	LogFlowThisFunc(("strFile=%s\n",
556	mData.mOpenInfo.mFileName.c_str()));
557
558	int vrc = setFileStatus(FileStatus_Down, VINF_SUCCESS);
559
560	LogFlowFuncLeaveRC(vrc);
561	return vrc;
562	}
563
564	int GuestFile::openFile(int *pGuestRc)
565	{
566	LogFlowThisFunc(("strFile=%s, strOpenMode=%s, strDisposition=%s, uCreationMode=%RU32\n",
567	mData.mOpenInfo.mFileName.c_str(), mData.mOpenInfo.mOpenMode.c_str(),
568	mData.mOpenInfo.mDisposition.c_str(), mData.mOpenInfo.mCreationMode));
569
570	/* Prepare HGCM call. */
571	VBOXHGCMSVCPARM paParms[8];
572	int i = 0;
573	paParms[i++].setPointer((void*)mData.mOpenInfo.mFileName.c_str(),
574	(ULONG)mData.mOpenInfo.mFileName.length() + 1);
575	paParms[i++].setPointer((void*)mData.mOpenInfo.mOpenMode.c_str(),
576	(ULONG)mData.mOpenInfo.mOpenMode.length() + 1);
577	paParms[i++].setPointer((void*)mData.mOpenInfo.mDisposition.c_str(),
578	(ULONG)mData.mOpenInfo.mDisposition.length() + 1);
579	paParms[i++].setUInt32(mData.mOpenInfo.mCreationMode);
580	paParms[i++].setUInt64(mData.mOpenInfo.mInitialOffset);
581
582	int vrc = sendCommand(HOST_FILE_OPEN, i, paParms);
583	if (RT_SUCCESS(vrc))
584	vrc = waitForStatusChange(30 * 1000 /* Timeout in ms */,
585	NULL /* FileStatus */);
586
587	LogFlowFuncLeaveRC(vrc);
588	return vrc;
589	}
590
591	int GuestFile::readData(uint32_t uSize, uint32_t uTimeoutMS,
592	void* pvData, uint32_t cbData, uint32_t* pcbRead)
593	{
594	LogFlowThisFunc(("uSize=%RU32, uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
595	uSize, uTimeoutMS, pvData, cbData));
596
597	uint32_t uContextID;
598	int vrc = generateContextID(mSession->getId(), mObjectID,
599	&uContextID);
600	if (RT_SUCCESS(vrc))
601	{
602	/* Prepare HGCM call. */
603	VBOXHGCMSVCPARM paParms[4];
604	int i = 0;
605	paParms[i++].setUInt32(mData.mID /* File handle */);
606	paParms[i++].setUInt32(uSize /* Size (in bytes) to read */);
607
608	uint32_t cbRead;
609	vrc = sendCommand(HOST_FILE_READ, i, paParms);
610	if (RT_SUCCESS(vrc))
611	vrc = waitForRead(uTimeoutMS, pvData, cbData, &cbRead);
612
613	if (RT_SUCCESS(vrc))
614	{
615	LogFlowThisFunc(("cbRead=%RU32\n", cbRead));
616
617	if (pcbRead)
618	*pcbRead = cbRead;
619	}
620	}
621
622	LogFlowFuncLeaveRC(vrc);
623	return vrc;
624	}
625
626	int GuestFile::readDataAt(uint64_t uOffset, uint32_t uSize, uint32_t uTimeoutMS,
627	void* pvData, size_t cbData, size_t* pcbRead)
628	{
629	LogFlowThisFunc(("uOffset=%RU64, uSize=%RU32, uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
630	uOffset, uSize, uTimeoutMS, pvData, cbData));
631
632	uint32_t uContextID;
633	int vrc = generateContextID(mSession->getId(), mObjectID,
634	&uContextID);
635	if (RT_SUCCESS(vrc))
636	{
637
638	/* Prepare HGCM call. */
639	VBOXHGCMSVCPARM paParms[4];
640	int i = 0;
641	paParms[i++].setUInt32(mData.mID /* File handle */);
642	paParms[i++].setUInt64(uOffset /* Offset (in bytes) to start reading */);
643	paParms[i++].setUInt32(uSize /* Size (in bytes) to read */);
644
645	uint32_t cbRead;
646	vrc = sendCommand(HOST_FILE_READ_AT, i, paParms);
647	if (RT_SUCCESS(vrc))
648	vrc = waitForRead(uTimeoutMS, pvData, cbData, &cbRead);
649
650	if (RT_SUCCESS(vrc))
651	{
652	LogFlowThisFunc(("cbRead=%RU32\n", cbRead));
653
654	if (pcbRead)
655	*pcbRead = cbRead;
656	}
657	}
658
659	LogFlowFuncLeaveRC(vrc);
660	return vrc;
661	}
662
663	int GuestFile::seekAt(uint64_t uOffset, GUEST_FILE_SEEKTYPE eSeekType,
664	uint32_t uTimeoutMS, uint64_t *puOffset)
665	{
666	LogFlowThisFunc(("uOffset=%RU64, uTimeoutMS=%RU32\n",
667	uOffset, uTimeoutMS));
668
669	/* Prepare HGCM call. */
670	VBOXHGCMSVCPARM paParms[4];
671	int i = 0;
672	paParms[i++].setUInt32(mData.mID /* File handle */);
673	paParms[i++].setUInt32(eSeekType /* Seek method */);
674	paParms[i++].setUInt64(uOffset /* Offset (in bytes) to start reading */);
675
676	int vrc = sendCommand(HOST_FILE_SEEK, i, paParms);
677	if (RT_SUCCESS(vrc))
678	vrc = waitForOffsetChange(uTimeoutMS, puOffset);
679
680	LogFlowFuncLeaveRC(vrc);
681	return vrc;
682	}
683
684	/* static */
685	HRESULT GuestFile::setErrorExternal(VirtualBoxBase *pInterface, int guestRc)
686	{
687	AssertPtr(pInterface);
688	AssertMsg(RT_FAILURE(guestRc), ("Guest rc does not indicate a failure when setting error\n"));
689
690	return pInterface->setError(VBOX_E_IPRT_ERROR, GuestFile::guestErrorToString(guestRc).c_str());
691	}
692
693	/* Does not do locking; caller is responsible for that! */
694	int GuestFile::setFileStatus(FileStatus_T fileStatus, int fileRc)
695	{
696	LogFlowThisFunc(("oldStatus=%ld, newStatus=%ld, fileRc=%Rrc\n",
697	mData.mStatus, fileStatus, fileRc));
698
699	#ifdef VBOX_STRICT
700	if (fileStatus == FileStatus_Error)
701	{
702	AssertMsg(RT_FAILURE(fileRc), ("Guest rc must be an error (%Rrc)\n", fileRc));
703	}
704	else
705	AssertMsg(RT_SUCCESS(fileRc), ("Guest rc must not be an error (%Rrc)\n", fileRc));
706	#endif
707
708	if (mData.mStatus != fileStatus)
709	{
710	mData.mStatus = fileStatus;
711
712	ComObjPtr<GuestErrorInfo> errorInfo;
713	HRESULT hr = errorInfo.createObject();
714	ComAssertComRC(hr);
715	if (RT_FAILURE(fileRc))
716	{
717	int rc2 = errorInfo->init(fileRc, guestErrorToString(fileRc));
718	AssertRC(rc2);
719	}
720
721	fireGuestFileStateChangedEvent(mEventSource, mSession,
722	this, mData.mStatus, errorInfo);
723	}
724
725	return VINF_SUCCESS;
726	}
727
728	int GuestFile::waitForOffsetChange(uint32_t uTimeoutMS, uint64_t *puOffset)
729	{
730	return VINF_SUCCESS;
731	}
732
733	int GuestFile::waitForRead(uint32_t uTimeoutMS, void* pvData, size_t cbData, uint32_t *pcbRead)
734	{
735	return VINF_SUCCESS;
736	}
737
738	int GuestFile::waitForStatusChange(uint32_t uTimeoutMS, FileStatus_T *pFileStatus)
739	{
740	int vrc;
741
742	/** @todo Parameter validation. */
743
744	ComPtr<IEventListener> pListener;
745	HRESULT hr = mEventSource->CreateListener(pListener.asOutParam());
746	if (SUCCEEDED(hr))
747	{
748	com::SafeArray <VBoxEventType_T> eventTypes(1);
749	eventTypes.push_back(VBoxEventType_OnGuestFileStateChanged);
750	hr = mEventSource->RegisterListener(pListener, ComSafeArrayAsInParam(eventTypes), false);
751	}
752	else
753	vrc = VERR_COM_UNEXPECTED;
754
755	if (SUCCEEDED(hr))
756	{
757	LogFlowThisFunc(("Waiting for guest file status change event (timeout=%RU32ms) ...\n",
758	uTimeoutMS));
759
760	vrc = VINF_SUCCESS;
761
762	uint64_t u64Started = RTTimeMilliTS();
763	bool fSignalled = false;
764	do
765	{
766	unsigned cMsWait;
767	if (uTimeoutMS == RT_INDEFINITE_WAIT)
768	cMsWait = 1000;
769	else
770	{
771	uint64_t cMsElapsed = RTTimeMilliTS() - u64Started;
772	if (cMsElapsed >= uTimeoutMS)
773	break; /* timed out */
774	cMsWait = RT_MIN(1000, uTimeoutMS - (uint32_t)cMsElapsed);
775	}
776
777	ComPtr<IEvent> pEvent;
778	hr = mEventSource->GetEvent(pListener, cMsWait, pEvent.asOutParam());
779	if ( SUCCEEDED(hr)
780	&& !pEvent.isNull())
781	{
782	VBoxEventType_T aType;
783	hr = pEvent->COMGETTER(Type)(&aType);
784	ComAssertComRC(hr);
785	switch (aType)
786	{
787	case VBoxEventType_OnGuestFileStateChanged:
788	{
789	ComPtr<IGuestFileStateChangedEvent> pChangedEvent = pEvent;
790	Assert(!pChangedEvent.isNull());
791
792	ComPtr<IGuestFile> pFile;
793	pChangedEvent->COMGETTER(File)(pFile.asOutParam());
794	Assert(!pFile.isNull());
795
796	if (pFile != this)
797	continue;
798	}
799
800	default:
801	AssertMsgFailed(("Unhandled event type %ld\n", aType));
802	break;
803	}
804
805	fSignalled = true;
806	break;
807	}
808
809	} while (!fSignalled);
810
811	if ( RT_SUCCESS(vrc)
812	&& !fSignalled)
813	{
814	vrc = VERR_TIMEOUT;
815	}
816
817	mEventSource->UnregisterListener(pListener);
818	}
819	else
820	vrc = VERR_COM_UNEXPECTED;
821
822	LogFlowFuncLeaveRC(vrc);
823	return vrc;
824	}
825
826	int GuestFile::waitForWrite(uint32_t uTimeoutMS, uint32_t *pcbWritten)
827	{
828	return VINF_SUCCESS;
829	}
830
831	int GuestFile::writeData(uint32_t uTimeoutMS, void *pvData, uint32_t cbData,
832	uint32_t *pcbWritten)
833	{
834	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
835	AssertReturn(cbData, VERR_INVALID_PARAMETER);
836
837	LogFlowThisFunc(("uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
838	uTimeoutMS, pvData, cbData));
839
840	uint32_t uContextID;
841	int vrc = generateContextID(mSession->getId(), mObjectID,
842	&uContextID);
843	if (RT_SUCCESS(vrc))
844	{
845	/* Prepare HGCM call. */
846	VBOXHGCMSVCPARM paParms[8];
847	int i = 0;
848	paParms[i++].setUInt32(uContextID);
849	paParms[i++].setUInt32(mData.mID /* File handle */);
850	paParms[i++].setUInt32(cbData /* Size (in bytes) to write */);
851	paParms[i++].setPointer(pvData, cbData);
852
853	uint32_t cbWritten;
854	vrc = sendCommand(HOST_FILE_WRITE, i, paParms);
855	if (RT_SUCCESS(vrc))
856	vrc = waitForWrite(uTimeoutMS, &cbWritten);
857
858	if (RT_SUCCESS(vrc))
859	{
860	LogFlowThisFunc(("cbWritten=%RU32\n", cbWritten));
861
862	if (cbWritten)
863	*pcbWritten = cbWritten;
864	}
865	}
866
867	LogFlowFuncLeaveRC(vrc);
868	return vrc;
869	}
870
871	int GuestFile::writeDataAt(uint64_t uOffset, uint32_t uTimeoutMS,
872	void pvData, uint32_t cbData, uint32_t pcbWritten)
873	{
874	AssertPtrReturn(pvData, VERR_INVALID_POINTER);
875	AssertReturn(cbData, VERR_INVALID_PARAMETER);
876
877	LogFlowThisFunc(("uOffset=%RU64, uTimeoutMS=%RU32, pvData=%p, cbData=%zu\n",
878	uOffset, uTimeoutMS, pvData, cbData));
879
880	uint32_t uContextID;
881	int vrc = generateContextID(mSession->getId(), mObjectID,
882	&uContextID);
883	if (RT_SUCCESS(vrc))
884	{
885	/* Prepare HGCM call. */
886	VBOXHGCMSVCPARM paParms[8];
887	int i = 0;
888	paParms[i++].setUInt32(mData.mID /* File handle */);
889	paParms[i++].setUInt64(uOffset /* Offset where to starting writing */);
890	paParms[i++].setUInt32(cbData /* Size (in bytes) to write */);
891	paParms[i++].setPointer(pvData, cbData);
892
893	vrc = sendCommand(HOST_FILE_WRITE_AT, i, paParms);
894	if (RT_SUCCESS(vrc))
895	{
896	uint32_t cbWritten;
897	vrc = sendCommand(HOST_FILE_WRITE, i, paParms);
898	if (RT_SUCCESS(vrc))
899	vrc = waitForWrite(uTimeoutMS, &cbWritten);
900
901	if (RT_SUCCESS(vrc))
902	{
903	LogFlowThisFunc(("cbWritten=%RU32\n", cbWritten));
904
905	if (cbWritten)
906	*pcbWritten = cbWritten;
907	}
908	}
909	}
910
911	LogFlowFuncLeaveRC(vrc);
912	return vrc;
913	}
914
915	// implementation of public methods
916	/////////////////////////////////////////////////////////////////////////////
917
918	STDMETHODIMP GuestFile::Close(void)
919	{
920	#ifndef VBOX_WITH_GUEST_CONTROL
921	ReturnComNotImplemented();
922	#else
923	LogFlowThisFuncEnter();
924
925	AutoCaller autoCaller(this);
926	if (FAILED(autoCaller.rc())) return autoCaller.rc();
927
928	/* Close file on guest. */
929	int guestRc;
930	int rc = closeFile(&guestRc);
931	/* On failure don't return here, instead do all the cleanup
932	* work first and then return an error. */
933
934	AssertPtr(mSession);
935	int rc2 = mSession->fileRemoveFromList(this);
936	if (RT_SUCCESS(rc))
937	rc = rc2;
938
939	/*
940	* Release autocaller before calling uninit.
941	*/
942	autoCaller.release();
943
944	uninit();
945
946	LogFlowFuncLeaveRC(rc);
947	if (RT_FAILURE(rc))
948	{
949	if (rc == VERR_GSTCTL_GUEST_ERROR)
950	return GuestFile::setErrorExternal(this, guestRc);
951
952	return setError(VBOX_E_IPRT_ERROR,
953	tr("Closing guest file failed with %Rrc\n"), rc);
954	}
955
956	return S_OK;
957	#endif /* VBOX_WITH_GUEST_CONTROL */
958	}
959
960	STDMETHODIMP GuestFile::QueryInfo(IFsObjInfo **aInfo)
961	{
962	#ifndef VBOX_WITH_GUEST_CONTROL
963	ReturnComNotImplemented();
964	#else
965	AutoCaller autoCaller(this);
966	if (FAILED(autoCaller.rc())) return autoCaller.rc();
967
968	ReturnComNotImplemented();
969	#endif /* VBOX_WITH_GUEST_CONTROL */
970	}
971
972	STDMETHODIMP GuestFile::Read(ULONG aToRead, ULONG aTimeoutMS, ComSafeArrayOut(BYTE, aData))
973	{
974	#ifndef VBOX_WITH_GUEST_CONTROL
975	ReturnComNotImplemented();
976	#else
977	if (aToRead == 0)
978	return setError(E_INVALIDARG, tr("The size to read is zero"));
979	CheckComArgOutSafeArrayPointerValid(aData);
980
981	AutoCaller autoCaller(this);
982	if (FAILED(autoCaller.rc())) return autoCaller.rc();
983
984	com::SafeArray<BYTE> data((size_t)aToRead);
985	Assert(data.size() >= aToRead);
986
987	HRESULT hr = S_OK;
988
989	uint32_t cbRead;
990	int vrc = readData(aToRead, aTimeoutMS,
991	data.raw(), aToRead, &cbRead);
992	if (RT_SUCCESS(vrc))
993	{
994	if (data.size() != cbRead)
995	data.resize(cbRead);
996	data.detachTo(ComSafeArrayOutArg(aData));
997	}
998	else
999	{
1000	switch (vrc)
1001	{
1002	default:
1003	hr = setError(VBOX_E_IPRT_ERROR,
1004	tr("Reading from file \"%s\" failed: %Rrc"),
1005	mData.mOpenInfo.mFileName.c_str(), vrc);
1006	break;
1007	}
1008	}
1009
1010	LogFlowThisFunc(("rc=%Rrc, cbRead=%RU64\n", vrc, cbRead));
1011
1012	LogFlowFuncLeaveRC(vrc);
1013	return hr;
1014	#endif /* VBOX_WITH_GUEST_CONTROL */
1015	}
1016
1017	STDMETHODIMP GuestFile::ReadAt(LONG64 aOffset, ULONG aToRead, ULONG aTimeoutMS, ComSafeArrayOut(BYTE, aData))
1018	{
1019	#ifndef VBOX_WITH_GUEST_CONTROL
1020	ReturnComNotImplemented();
1021	#else
1022	if (aToRead == 0)
1023	return setError(E_INVALIDARG, tr("The size to read is zero"));
1024	CheckComArgOutSafeArrayPointerValid(aData);
1025
1026	AutoCaller autoCaller(this);
1027	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1028
1029	com::SafeArray<BYTE> data((size_t)aToRead);
1030	Assert(data.size() >= aToRead);
1031
1032	HRESULT hr = S_OK;
1033
1034	size_t cbRead;
1035	int vrc = readDataAt(aOffset, aToRead, aTimeoutMS,
1036	data.raw(), aToRead, &cbRead);
1037	if (RT_SUCCESS(vrc))
1038	{
1039	if (data.size() != cbRead)
1040	data.resize(cbRead);
1041	data.detachTo(ComSafeArrayOutArg(aData));
1042	}
1043	else
1044	{
1045	switch (vrc)
1046	{
1047	default:
1048	hr = setError(VBOX_E_IPRT_ERROR,
1049	tr("Reading from file \"%s\" (at offset %RU64) failed: %Rrc"),
1050	mData.mOpenInfo.mFileName.c_str(), aOffset, vrc);
1051	break;
1052	}
1053	}
1054
1055	LogFlowThisFunc(("rc=%Rrc, cbRead=%RU64\n", vrc, cbRead));
1056
1057	LogFlowFuncLeaveRC(vrc);
1058	return hr;
1059	#endif /* VBOX_WITH_GUEST_CONTROL */
1060	}
1061
1062	STDMETHODIMP GuestFile::Seek(LONG64 aOffset, FileSeekType_T aType)
1063	{
1064	#ifndef VBOX_WITH_GUEST_CONTROL
1065	ReturnComNotImplemented();
1066	#else
1067	LogFlowThisFuncEnter();
1068
1069	AutoCaller autoCaller(this);
1070	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1071
1072	HRESULT hr = S_OK;
1073
1074	GUEST_FILE_SEEKTYPE eSeekType;
1075	switch (aType)
1076	{
1077	case FileSeekType_Set:
1078	eSeekType = GUEST_FILE_SEEKTYPE_BEGIN;
1079	break;
1080
1081	case FileSeekType_Current:
1082	eSeekType = GUEST_FILE_SEEKTYPE_CURRENT;
1083	break;
1084
1085	default:
1086	return setError(E_INVALIDARG, tr("Invalid seek type specified"));
1087	break;
1088	}
1089
1090	int vrc = seekAt(aOffset, eSeekType,
1091	30 * 1000 /* 30s timeout /, NULL / puOffset */);
1092	if (RT_FAILURE(vrc))
1093	{
1094	switch (vrc)
1095	{
1096	default:
1097	hr = setError(VBOX_E_IPRT_ERROR,
1098	tr("Seeking file \"%s\" (to offset %RU64) failed: %Rrc"),
1099	mData.mOpenInfo.mFileName.c_str(), aOffset, vrc);
1100	break;
1101	}
1102	}
1103
1104	LogFlowFuncLeaveRC(vrc);
1105	return hr;
1106	#endif /* VBOX_WITH_GUEST_CONTROL */
1107	}
1108
1109	STDMETHODIMP GuestFile::SetACL(IN_BSTR aACL)
1110	{
1111	#ifndef VBOX_WITH_GUEST_CONTROL
1112	ReturnComNotImplemented();
1113	#else
1114	AutoCaller autoCaller(this);
1115	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1116
1117	ReturnComNotImplemented();
1118	#endif /* VBOX_WITH_GUEST_CONTROL */
1119	}
1120
1121	STDMETHODIMP GuestFile::Write(ComSafeArrayIn(BYTE, aData), ULONG aTimeoutMS, ULONG *aWritten)
1122	{
1123	#ifndef VBOX_WITH_GUEST_CONTROL
1124	ReturnComNotImplemented();
1125	#else
1126	LogFlowThisFuncEnter();
1127
1128	CheckComArgOutPointerValid(aWritten);
1129
1130	AutoCaller autoCaller(this);
1131	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1132
1133	HRESULT hr = S_OK;
1134
1135	com::SafeArray<BYTE> data(ComSafeArrayInArg(aData));
1136	int vrc = writeData(aTimeoutMS, data.raw(), (uint32_t)data.size(),
1137	(uint32_t*)aWritten);
1138	if (RT_FAILURE(vrc))
1139	{
1140	switch (vrc)
1141	{
1142	default:
1143	hr = setError(VBOX_E_IPRT_ERROR,
1144	tr("Writing to file \"%s\" failed: %Rrc"),
1145	mData.mOpenInfo.mFileName.c_str(), vrc);
1146	break;
1147	}
1148	}
1149
1150	LogFlowThisFunc(("rc=%Rrc, aWritten=%RU32\n", vrc, aWritten));
1151
1152	LogFlowFuncLeaveRC(vrc);
1153	return hr;
1154	#endif /* VBOX_WITH_GUEST_CONTROL */
1155	}
1156
1157	STDMETHODIMP GuestFile::WriteAt(LONG64 aOffset, ComSafeArrayIn(BYTE, aData), ULONG aTimeoutMS, ULONG *aWritten)
1158	{
1159	#ifndef VBOX_WITH_GUEST_CONTROL
1160	ReturnComNotImplemented();
1161	#else
1162	LogFlowThisFuncEnter();
1163
1164	CheckComArgOutPointerValid(aWritten);
1165
1166	AutoCaller autoCaller(this);
1167	if (FAILED(autoCaller.rc())) return autoCaller.rc();
1168
1169	HRESULT hr = S_OK;
1170
1171	com::SafeArray<BYTE> data(ComSafeArrayInArg(aData));
1172	int vrc = writeData(aTimeoutMS, data.raw(), (uint32_t)data.size(),
1173	(uint32_t*)aWritten);
1174	if (RT_FAILURE(vrc))
1175	{
1176	switch (vrc)
1177	{
1178	default:
1179	hr = setError(VBOX_E_IPRT_ERROR,
1180	tr("Writing to file \"%s\" (at offset %RU64) failed: %Rrc"),
1181	mData.mOpenInfo.mFileName.c_str(), aOffset, vrc);
1182	break;
1183	}
1184	}
1185
1186	LogFlowThisFunc(("rc=%Rrc, aWritten=%RU32\n", vrc, aWritten));
1187
1188	LogFlowFuncLeaveRC(vrc);
1189	return hr;
1190	#endif /* VBOX_WITH_GUEST_CONTROL */
1191	}
1192

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source: vbox/trunk/src/VBox/Main/src-client/GuestFileImpl.cpp@ 45418

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