vfsprogress.cpp@ 78052

Last change on this file since 78052 was 76553, checked in by vboxsync, 6 years ago
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1	/* $Id: vfsprogress.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* IPRT - Virtual File System, progress filter for files.
4	*/
5
6	/*
7	* Copyright (C) 2010-2019 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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include <iprt/vfs.h>
32	#include <iprt/vfslowlevel.h>
33
34	#include <iprt/assert.h>
35	#include <iprt/errcore.h>
36	#include <iprt/file.h>
37	#include <iprt/poll.h>
38	#include <iprt/string.h>
39	#include <iprt/thread.h>
40
41
42	/*********************************************************************************************************************************
43	* Structures and Typedefs *
44	*********************************************************************************************************************************/
45	/**
46	* Private data of a standard file.
47	*/
48	typedef struct RTVFSPROGRESSFILE
49	{
50	/** This is negative (RT_FAILURE) if canceled. */
51	int rcCanceled;
52	/** RTVFSPROGRESS_F_XXX. */
53	uint32_t fFlags;
54	/** Progress callback. */
55	PFNRTPROGRESS pfnProgress;
56	/** User argument for the callback. */
57	void *pvUser;
58	/** The I/O stream handle. */
59	RTVFSIOSTREAM hVfsIos;
60	/** The file handle. NIL_RTFILE if a pure I/O stream. */
61	RTVFSFILE hVfsFile;
62	/** Total number of bytes expected to be read and written. */
63	uint64_t cbExpected;
64	/** The number of bytes expected to be read. */
65	uint64_t cbExpectedRead;
66	/** The number of bytes expected to be written. */
67	uint64_t cbExpectedWritten;
68	/** Number of bytes currently read. */
69	uint64_t cbCurrentlyRead;
70	/** Number of bytes currently written. */
71	uint64_t cbCurrentlyWritten;
72	/** Current precentage. */
73	unsigned uCurPct;
74	} RTVFSPROGRESSFILE;
75	/** Pointer to the private data of a standard file. */
76	typedef RTVFSPROGRESSFILE *PRTVFSPROGRESSFILE;
77
78
79	/**
80	* Update the progress and do the progress callback if necessary.
81	*
82	* @returns Callback return code.
83	* @param pThis The file progress instance.
84	*/
85	static int rtVfsProgressFile_UpdateProgress(PRTVFSPROGRESSFILE pThis)
86	{
87	uint64_t cbDone = RT_MIN(pThis->cbCurrentlyRead, pThis->cbExpectedRead)
88	+ RT_MIN(pThis->cbCurrentlyWritten, pThis->cbExpectedWritten);
89	unsigned uPct = cbDone * 100 / pThis->cbExpected;
90	if (uPct == pThis->uCurPct)
91	return pThis->rcCanceled;
92	pThis->uCurPct = uPct;
93
94	int rc = pThis->pfnProgress(uPct, pThis->pvUser);
95	if (!(pThis->fFlags & RTVFSPROGRESS_F_CANCELABLE))
96	rc = VINF_SUCCESS;
97	else if (RT_FAILURE(rc) && RT_SUCCESS(pThis->rcCanceled))
98	pThis->rcCanceled = rc;
99
100	return rc;
101	}
102
103
104	/**
105	* @interface_method_impl{RTVFSOBJOPS,pfnClose}
106	*/
107	static DECLCALLBACK(int) rtVfsProgressFile_Close(void *pvThis)
108	{
109	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
110
111	if (pThis->hVfsFile != NIL_RTVFSFILE)
112	{
113	RTVfsFileRelease(pThis->hVfsFile);
114	pThis->hVfsFile = NIL_RTVFSFILE;
115	}
116	RTVfsIoStrmRelease(pThis->hVfsIos);
117	pThis->hVfsIos = NIL_RTVFSIOSTREAM;
118
119	pThis->pfnProgress = NULL;
120
121	return VINF_SUCCESS;
122	}
123
124
125	/**
126	* @interface_method_impl{RTVFSOBJOPS,pfnQueryInfo}
127	*/
128	static DECLCALLBACK(int) rtVfsProgressFile_QueryInfo(void *pvThis, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAddAttr)
129	{
130	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
131	int rc = pThis->rcCanceled;
132	if (RT_SUCCESS(rc))
133	rc = RTVfsIoStrmQueryInfo(pThis->hVfsIos, pObjInfo, enmAddAttr);
134	return rc;
135	}
136
137
138	/**
139	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnRead}
140	*/
141	static DECLCALLBACK(int) rtVfsProgressFile_Read(void pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t pcbRead)
142	{
143	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
144
145	int rc = pThis->rcCanceled;
146	if (RT_SUCCESS(rc))
147	{
148	/* Simplify a little there if a seeks is implied and assume the read goes well. */
149	if ( off >= 0
150	&& (pThis->fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ))
151	{
152	uint64_t offCurrent = RTVfsFileTell(pThis->hVfsFile);
153	if (offCurrent < (uint64_t)off)
154	pThis->cbCurrentlyRead += off - offCurrent;
155	}
156
157	/* Calc the request before calling down the stack. */
158	size_t cbReq = 0;
159	unsigned i = pSgBuf->cSegs;
160	while (i-- > 0)
161	cbReq += pSgBuf->paSegs[i].cbSeg;
162
163	/* Do the read. */
164	rc = RTVfsIoStrmSgRead(pThis->hVfsIos, off, pSgBuf, fBlocking, pcbRead);
165	if (RT_SUCCESS(rc))
166	{
167	/* Update the progress (we cannot cancel here, sorry). */
168	pThis->cbCurrentlyRead += pcbRead ? *pcbRead : cbReq;
169	rtVfsProgressFile_UpdateProgress(pThis);
170	}
171	}
172
173	return rc;
174	}
175
176
177	/**
178	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnWrite}
179	*/
180	static DECLCALLBACK(int) rtVfsProgressFile_Write(void pvThis, RTFOFF off, PCRTSGBUF pSgBuf, bool fBlocking, size_t pcbWritten)
181	{
182	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
183
184	int rc = pThis->rcCanceled;
185	if (RT_SUCCESS(rc))
186	{
187	/* Simplify a little there if a seeks is implied and assume the write goes well. */
188	if ( off >= 0
189	&& (pThis->fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE))
190	{
191	uint64_t offCurrent = RTVfsFileTell(pThis->hVfsFile);
192	if (offCurrent < (uint64_t)off)
193	pThis->cbCurrentlyWritten += off - offCurrent;
194	}
195
196	/* Calc the request before calling down the stack. */
197	size_t cbReq = 0;
198	unsigned i = pSgBuf->cSegs;
199	while (i-- > 0)
200	cbReq += pSgBuf->paSegs[i].cbSeg;
201
202	/* Do the read. */
203	rc = RTVfsIoStrmSgWrite(pThis->hVfsIos, off, pSgBuf, fBlocking, pcbWritten);
204	if (RT_SUCCESS(rc))
205	{
206	/* Update the progress (we cannot cancel here, sorry). */
207	pThis->cbCurrentlyWritten += pcbWritten ? *pcbWritten : cbReq;
208	rtVfsProgressFile_UpdateProgress(pThis);
209	}
210	}
211
212	return rc;
213	}
214
215
216	/**
217	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnFlush}
218	*/
219	static DECLCALLBACK(int) rtVfsProgressFile_Flush(void *pvThis)
220	{
221	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
222	int rc = pThis->rcCanceled;
223	if (RT_SUCCESS(rc))
224	rc = RTVfsIoStrmFlush(pThis->hVfsIos);
225	return rc;
226	}
227
228
229	/**
230	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnPollOne}
231	*/
232	static DECLCALLBACK(int)
233	rtVfsProgressFile_PollOne(void pvThis, uint32_t fEvents, RTMSINTERVAL cMillies, bool fIntr, uint32_t pfRetEvents)
234	{
235	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
236	int rc = pThis->rcCanceled;
237	if (RT_SUCCESS(rc))
238	rc = RTVfsIoStrmPoll(pThis->hVfsIos, fEvents, cMillies, fIntr, pfRetEvents);
239	else
240	{
241	*pfRetEvents \|= RTPOLL_EVT_ERROR;
242	rc = VINF_SUCCESS;
243	}
244	return rc;
245	}
246
247
248	/**
249	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnTell}
250	*/
251	static DECLCALLBACK(int) rtVfsProgressFile_Tell(void *pvThis, PRTFOFF poffActual)
252	{
253	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
254	*poffActual = RTVfsIoStrmTell(pThis->hVfsIos);
255	return poffActual >= 0 ? VINF_SUCCESS : (int)poffActual;
256	}
257
258
259	/**
260	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnSkip}
261	*/
262	static DECLCALLBACK(int) rtVfsProgressFile_Skip(void *pvThis, RTFOFF cb)
263	{
264	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
265	int rc = pThis->rcCanceled;
266	if (RT_SUCCESS(rc))
267	{
268	rc = RTVfsIoStrmSkip(pThis->hVfsIos, cb);
269	if (RT_SUCCESS(rc))
270	{
271	pThis->cbCurrentlyRead += cb;
272	rtVfsProgressFile_UpdateProgress(pThis);
273	}
274	}
275	return rc;
276	}
277
278
279	/**
280	* @interface_method_impl{RTVFSIOSTREAMOPS,pfnZeroFill}
281	*/
282	static DECLCALLBACK(int) rtVfsProgressFile_ZeroFill(void *pvThis, RTFOFF cb)
283	{
284	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
285	int rc = pThis->rcCanceled;
286	if (RT_SUCCESS(rc))
287	{
288	rc = RTVfsIoStrmZeroFill(pThis->hVfsIos, cb);
289	if (RT_SUCCESS(rc))
290	{
291	pThis->cbCurrentlyWritten += cb;
292	rtVfsProgressFile_UpdateProgress(pThis);
293	}
294	}
295	return rc;
296	}
297
298
299	/**
300	* I/O stream progress operations.
301	*/
302	DECL_HIDDEN_CONST(const RTVFSIOSTREAMOPS) g_rtVfsProgressIosOps =
303	{
304	{ /* Obj */
305	RTVFSOBJOPS_VERSION,
306	RTVFSOBJTYPE_IO_STREAM,
307	"I/O Stream Progress",
308	rtVfsProgressFile_Close,
309	rtVfsProgressFile_QueryInfo,
310	RTVFSOBJOPS_VERSION
311	},
312	RTVFSIOSTREAMOPS_VERSION,
313	0,
314	rtVfsProgressFile_Read,
315	rtVfsProgressFile_Write,
316	rtVfsProgressFile_Flush,
317	rtVfsProgressFile_PollOne,
318	rtVfsProgressFile_Tell,
319	rtVfsProgressFile_Skip,
320	rtVfsProgressFile_ZeroFill,
321	RTVFSIOSTREAMOPS_VERSION,
322	};
323
324
325
326	/**
327	* @interface_method_impl{RTVFSOBJSETOPS,pfnMode}
328	*/
329	static DECLCALLBACK(int) rtVfsProgressFile_SetMode(void *pvThis, RTFMODE fMode, RTFMODE fMask)
330	{
331	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
332	//return RTVfsFileSetMode(pThis->hVfsIos, fMode, fMask); - missing
333	RT_NOREF(pThis, fMode, fMask);
334	AssertFailedReturn(VERR_NOT_IMPLEMENTED);
335	}
336
337
338	/**
339	* @interface_method_impl{RTVFSOBJSETOPS,pfnSetTimes}
340	*/
341	static DECLCALLBACK(int) rtVfsProgressFile_SetTimes(void *pvThis, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
342	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
343	{
344	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
345	//return RTVfsFileSetTimes(pThis->hVfsIos, pAccessTime, pModificationTime, pChangeTime, pBirthTime); - missing
346	RT_NOREF(pThis, pAccessTime, pModificationTime, pChangeTime, pBirthTime);
347	AssertFailedReturn(VERR_NOT_IMPLEMENTED);
348	}
349
350
351	/**
352	* @interface_method_impl{RTVFSOBJSETOPS,pfnSetOwner}
353	*/
354	static DECLCALLBACK(int) rtVfsProgressFile_SetOwner(void *pvThis, RTUID uid, RTGID gid)
355	{
356	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
357	//return RTVfsFileSetOwern(pThis->hVfsIos, uid, gid); - missing
358	RT_NOREF(pThis, uid, gid);
359	AssertFailedReturn(VERR_NOT_IMPLEMENTED);
360	}
361
362
363	/**
364	* @interface_method_impl{RTVFSFILEOPS,pfnSeek}
365	*/
366	static DECLCALLBACK(int) rtVfsProgressFile_Seek(void *pvThis, RTFOFF offSeek, unsigned uMethod, PRTFOFF poffActual)
367	{
368	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
369
370	uint64_t offPrev = UINT64_MAX;
371	if (pThis->fFlags & (RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ \| RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE))
372	offPrev = RTVfsFileTell(pThis->hVfsFile);
373
374	uint64_t offActual = 0;
375	int rc = RTVfsFileSeek(pThis->hVfsFile, offSeek, uMethod, &offActual);
376	if (RT_SUCCESS(rc))
377	{
378	if (poffActual)
379	*poffActual = offActual;
380
381	/* Do progress updates as requested. */
382	if (pThis->fFlags & (RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ \| RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE))
383	{
384	if (offActual > offPrev)
385	{
386	if (pThis->fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ)
387	pThis->cbCurrentlyRead += offActual - offPrev;
388	else
389	pThis->cbCurrentlyWritten += offActual - offPrev;
390	rtVfsProgressFile_UpdateProgress(pThis);
391	}
392	}
393	}
394	return rc;
395	}
396
397
398	/**
399	* @interface_method_impl{RTVFSFILEOPS,pfnQuerySize}
400	*/
401	static DECLCALLBACK(int) rtVfsProgressFile_QuerySize(void pvThis, uint64_t pcbFile)
402	{
403	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
404	return RTVfsFileGetSize(pThis->hVfsFile, pcbFile);
405	}
406
407
408	/**
409	* @interface_method_impl{RTVFSFILEOPS,pfnSetSize}
410	*/
411	static DECLCALLBACK(int) rtVfsProgressFile_SetSize(void *pvThis, uint64_t cbFile, uint32_t fFlags)
412	{
413	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
414	return RTVfsFileSetSize(pThis->hVfsFile, cbFile, fFlags);
415	}
416
417
418	/**
419	* @interface_method_impl{RTVFSFILEOPS,pfnQueryMaxSize}
420	*/
421	static DECLCALLBACK(int) rtVfsProgressFile_QueryMaxSize(void pvThis, uint64_t pcbMax)
422	{
423	PRTVFSPROGRESSFILE pThis = (PRTVFSPROGRESSFILE)pvThis;
424	return RTVfsFileQueryMaxSize(pThis->hVfsFile, pcbMax);
425	}
426
427
428
429	/**
430	* File progress operations.
431	*/
432	DECL_HIDDEN_CONST(const RTVFSFILEOPS) g_rtVfsProgressFileOps =
433	{
434	{ /* Stream */
435	{ /* Obj */
436	RTVFSOBJOPS_VERSION,
437	RTVFSOBJTYPE_FILE,
438	"File Progress",
439	rtVfsProgressFile_Close,
440	rtVfsProgressFile_QueryInfo,
441	RTVFSOBJOPS_VERSION
442	},
443	RTVFSIOSTREAMOPS_VERSION,
444	0,
445	rtVfsProgressFile_Read,
446	rtVfsProgressFile_Write,
447	rtVfsProgressFile_Flush,
448	rtVfsProgressFile_PollOne,
449	rtVfsProgressFile_Tell,
450	rtVfsProgressFile_Skip,
451	rtVfsProgressFile_ZeroFill,
452	RTVFSIOSTREAMOPS_VERSION,
453	},
454	RTVFSFILEOPS_VERSION,
455	0,
456	{ /* ObjSet */
457	RTVFSOBJSETOPS_VERSION,
458	RT_UOFFSETOF(RTVFSFILEOPS, ObjSet) - RT_UOFFSETOF(RTVFSFILEOPS, Stream.Obj),
459	rtVfsProgressFile_SetMode,
460	rtVfsProgressFile_SetTimes,
461	rtVfsProgressFile_SetOwner,
462	RTVFSOBJSETOPS_VERSION
463	},
464	rtVfsProgressFile_Seek,
465	rtVfsProgressFile_QuerySize,
466	rtVfsProgressFile_SetSize,
467	rtVfsProgressFile_QueryMaxSize,
468	RTVFSFILEOPS_VERSION
469	};
470
471
472	RTDECL(int) RTVfsCreateProgressForIoStream(RTVFSIOSTREAM hVfsIos, PFNRTPROGRESS pfnProgress, void *pvUser, uint32_t fFlags,
473	uint64_t cbExpectedRead, uint64_t cbExpectedWritten, PRTVFSIOSTREAM phVfsIos)
474	{
475	AssertPtrReturn(pfnProgress, VERR_INVALID_POINTER);
476	AssertReturn(!(fFlags & ~RTVFSPROGRESS_F_VALID_MASK), VERR_INVALID_FLAGS);
477	AssertReturn(!(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ) \|\| !(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE),
478	VERR_INVALID_FLAGS);
479
480	uint32_t cRefs = RTVfsIoStrmRetain(hVfsIos);
481	AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
482
483	PRTVFSPROGRESSFILE pThis;
484	int rc = RTVfsNewIoStream(&g_rtVfsProgressIosOps, sizeof(*pThis), RTVfsIoStrmGetOpenFlags(hVfsIos),
485	NIL_RTVFS, NIL_RTVFSLOCK, phVfsIos, (void **)&pThis);
486	if (RT_SUCCESS(rc))
487	{
488	pThis->rcCanceled = VINF_SUCCESS;
489	pThis->fFlags = fFlags;
490	pThis->pfnProgress = pfnProgress;
491	pThis->pvUser = pvUser;
492	pThis->hVfsIos = hVfsIos;
493	pThis->hVfsFile = RTVfsIoStrmToFile(hVfsIos);
494	pThis->cbCurrentlyRead = 0;
495	pThis->cbCurrentlyWritten = 0;
496	pThis->cbExpectedRead = cbExpectedRead;
497	pThis->cbExpectedWritten = cbExpectedWritten;
498	pThis->cbExpected = cbExpectedRead + cbExpectedWritten;
499	if (!pThis->cbExpected)
500	pThis->cbExpected = 1;
501	pThis->uCurPct = 0;
502	}
503	return rc;
504	}
505
506
507	RTDECL(int) RTVfsCreateProgressForFile(RTVFSFILE hVfsFile, PFNRTPROGRESS pfnProgress, void *pvUser, uint32_t fFlags,
508	uint64_t cbExpectedRead, uint64_t cbExpectedWritten, PRTVFSFILE phVfsFile)
509	{
510	AssertPtrReturn(pfnProgress, VERR_INVALID_POINTER);
511	AssertReturn(!(fFlags & ~RTVFSPROGRESS_F_VALID_MASK), VERR_INVALID_FLAGS);
512	AssertReturn(!(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_READ) \|\| !(fFlags & RTVFSPROGRESS_F_FORWARD_SEEK_AS_WRITE),
513	VERR_INVALID_FLAGS);
514
515	uint32_t cRefs = RTVfsFileRetain(hVfsFile);
516	AssertReturn(cRefs != UINT32_MAX, VERR_INVALID_HANDLE);
517
518	RTVFSIOSTREAM hVfsIos = RTVfsFileToIoStream(hVfsFile);
519	AssertReturnStmt(hVfsIos != NIL_RTVFSIOSTREAM, RTVfsFileRelease(hVfsFile), VERR_INVALID_HANDLE);
520
521	PRTVFSPROGRESSFILE pThis;
522	int rc = RTVfsNewFile(&g_rtVfsProgressFileOps, sizeof(*pThis), RTVfsFileGetOpenFlags(hVfsFile),
523	NIL_RTVFS, NIL_RTVFSLOCK, phVfsFile, (void **)&pThis);
524	if (RT_SUCCESS(rc))
525	{
526	pThis->fFlags = fFlags;
527	pThis->pfnProgress = pfnProgress;
528	pThis->pvUser = pvUser;
529	pThis->hVfsIos = hVfsIos;
530	pThis->hVfsFile = hVfsFile;
531	pThis->cbCurrentlyRead = 0;
532	pThis->cbCurrentlyWritten = 0;
533	pThis->cbExpectedRead = cbExpectedRead;
534	pThis->cbExpectedWritten = cbExpectedWritten;
535	pThis->cbExpected = cbExpectedRead + cbExpectedWritten;
536	if (!pThis->cbExpected)
537	pThis->cbExpected = 1;
538	pThis->uCurPct = 0;
539	}
540	return rc;
541	}
542

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source: vbox/trunk/src/VBox/Runtime/common/vfs/vfsprogress.cpp@ 78052

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