path.cpp@ 93668

Last change on this file since 93668 was 93115, checked in by vboxsync, 3 years ago
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1	/* $Id: path.cpp 93115 2022-01-01 11:31:46Z vboxsync $ */
2	/** @file
3	* VirtualBox Windows Guest Shared Folders - Path related routines.
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	#include "vbsf.h"
23	#include <iprt/err.h>
24
25
26	/*********************************************************************************************************************************
27	* Defined Constants And Macros *
28	*********************************************************************************************************************************/
29	static UNICODE_STRING g_UnicodeBackslash = { 2, 4, L"\\" };
30
31
32	/**
33	* Handles failure scenarios where we may have to close the handle.
34	*/
35	DECL_NO_INLINE(static, NTSTATUS) vbsfNtCreateWorkerBail(NTSTATUS Status, VBOXSFCREATEREQ *pReq,
36	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension)
37	{
38	Log(("VBOXSF: vbsfNtCreateWorker: Returns %#x (Handle was %#RX64)\n", Status, pReq->CreateParms.Handle));
39	if (pReq->CreateParms.Handle != SHFL_HANDLE_NIL)
40	{
41	AssertCompile(sizeof(VBOXSFCLOSEREQ) <= RT_UOFFSETOF(VBOXSFCREATEREQ, CreateParms));
42	VbglR0SfHostReqClose(pNetRootExtension->map.root, (VBOXSFCLOSEREQ *)pReq, pReq->CreateParms.Handle);
43	}
44	return Status;
45	}
46
47
48	/**
49	* Worker for VBoxMRxCreate that converts parameters and calls the host.
50	*
51	* The caller takes care of freeing the request buffer, so this function is free
52	* to just return at will.
53	*/
54	static NTSTATUS vbsfNtCreateWorker(PRX_CONTEXT RxContext, VBOXSFCREATEREQ pReq, ULONG pulCreateAction,
55	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension, PMRX_FCB pFcb)
56	{
57	/*
58	* Check out the options.
59	*/
60	ULONG const fOptions = RxContext->Create.NtCreateParameters.CreateOptions & FILE_VALID_OPTION_FLAGS;
61	ULONG const CreateDisposition = RxContext->Create.NtCreateParameters.Disposition;
62	bool const fCreateDir = (fOptions & FILE_DIRECTORY_FILE)
63	&& (CreateDisposition == FILE_CREATE \|\| CreateDisposition == FILE_OPEN_IF);
64	bool const fTemporaryFile = (RxContext->Create.NtCreateParameters.FileAttributes & FILE_ATTRIBUTE_TEMPORARY)
65	\|\| (pFcb->FcbState & FCB_STATE_TEMPORARY);
66
67	Log(("VBOXSF: vbsfNtCreateWorker: fTemporaryFile %d, fCreateDir %d%s%s%s\n", fTemporaryFile, fCreateDir,
68	fOptions & FILE_DIRECTORY_FILE ? ", FILE_DIRECTORY_FILE" : "",
69	fOptions & FILE_NON_DIRECTORY_FILE ? ", FILE_NON_DIRECTORY_FILE" : "",
70	fOptions & FILE_DELETE_ON_CLOSE ? ", FILE_DELETE_ON_CLOSE" : ""));
71
72	/* Check consistency in specified flags. */
73	if (fTemporaryFile && fCreateDir) /* Directories with temporary flag set are not allowed! */
74	{
75	Log(("VBOXSF: vbsfNtCreateWorker: Not allowed: Temporary directories!\n"));
76	return STATUS_INVALID_PARAMETER;
77	}
78
79	if ((fOptions & (FILE_DIRECTORY_FILE \| FILE_NON_DIRECTORY_FILE)) == (FILE_DIRECTORY_FILE \| FILE_NON_DIRECTORY_FILE))
80	{
81	/** @todo r=bird: Check if FILE_DIRECTORY_FILE+FILE_NON_DIRECTORY_FILE really is illegal in all combinations... */
82	Log(("VBOXSF: vbsfNtCreateWorker: Unsupported combination: dir && !dir\n"));
83	return STATUS_INVALID_PARAMETER;
84	}
85
86	/*
87	* Initialize create parameters.
88	*/
89	RT_ZERO(pReq->CreateParms);
90	pReq->CreateParms.Handle = SHFL_HANDLE_NIL;
91	pReq->CreateParms.Result = SHFL_NO_RESULT;
92
93	/*
94	* Directory.
95	*/
96	if (fOptions & FILE_DIRECTORY_FILE)
97	{
98	if (CreateDisposition != FILE_CREATE && CreateDisposition != FILE_OPEN && CreateDisposition != FILE_OPEN_IF)
99	{
100	Log(("VBOXSF: vbsfNtCreateWorker: Invalid disposition 0x%08X for directory!\n",
101	CreateDisposition));
102	return STATUS_INVALID_PARAMETER;
103	}
104
105	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_DIRECTORY\n"));
106	pReq->CreateParms.CreateFlags \|= SHFL_CF_DIRECTORY;
107	}
108
109	/*
110	* Disposition.
111	*/
112	switch (CreateDisposition)
113	{
114	case FILE_SUPERSEDE:
115	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_REPLACE_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
116	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACT_REPLACE_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW\n"));
117	break;
118
119	case FILE_OPEN:
120	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW;
121	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW\n"));
122	break;
123
124	case FILE_CREATE:
125	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_FAIL_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
126	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACT_FAIL_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW\n"));
127	break;
128
129	case FILE_OPEN_IF:
130	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
131	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW\n"));
132	break;
133
134	case FILE_OVERWRITE:
135	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_OVERWRITE_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW;
136	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACT_OVERWRITE_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW\n"));
137	break;
138
139	case FILE_OVERWRITE_IF:
140	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_OVERWRITE_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
141	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACT_OVERWRITE_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW\n"));
142	break;
143
144	default:
145	Log(("VBOXSF: vbsfNtCreateWorker: Unexpected create disposition: 0x%08X\n", CreateDisposition));
146	return STATUS_INVALID_PARAMETER;
147	}
148
149	/*
150	* Access mode.
151	*/
152	ACCESS_MASK const DesiredAccess = RxContext->Create.NtCreateParameters.DesiredAccess;
153	if (DesiredAccess & FILE_READ_DATA)
154	{
155	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_READ\n"));
156	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_READ;
157	}
158
159	/* FILE_WRITE_DATA means write access regardless of FILE_APPEND_DATA bit.
160	FILE_APPEND_DATA without FILE_WRITE_DATA means append only mode. */
161	if (DesiredAccess & FILE_WRITE_DATA)
162	{
163	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_WRITE\n"));
164	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_WRITE;
165	}
166	else if (DesiredAccess & FILE_APPEND_DATA)
167	{
168	/* Both write and append access flags are required for shared folders,
169	* as on Windows FILE_APPEND_DATA implies write access. */
170	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_WRITE \| SHFL_CF_ACCESS_APPEND\n"));
171	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_WRITE \| SHFL_CF_ACCESS_APPEND;
172	}
173
174	if (DesiredAccess & FILE_READ_ATTRIBUTES)
175	{
176	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_ATTR_READ\n"));
177	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_ATTR_READ;
178	}
179	if (DesiredAccess & FILE_WRITE_ATTRIBUTES)
180	{
181	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_ATTR_WRITE\n"));
182	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_ATTR_WRITE;
183	}
184
185	/*
186	* Sharing.
187	*/
188	ULONG const ShareAccess = RxContext->Create.NtCreateParameters.ShareAccess;
189	if (ShareAccess & (FILE_SHARE_READ \| FILE_SHARE_WRITE))
190	{
191	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_DENYNONE\n"));
192	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYNONE;
193	}
194	else if (ShareAccess & FILE_SHARE_READ)
195	{
196	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_DENYWRITE\n"));
197	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYWRITE;
198	}
199	else if (ShareAccess & FILE_SHARE_WRITE)
200	{
201	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_DENYREAD\n"));
202	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYREAD;
203	}
204	else
205	{
206	Log(("VBOXSF: vbsfNtCreateWorker: CreateFlags \|= SHFL_CF_ACCESS_DENYALL\n"));
207	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYALL;
208	}
209
210	/*
211	* Set initial allocation size and attributes.
212	* There aren't too many attributes that need to be passed over.
213	*/
214	pReq->CreateParms.Info.cbObject = RxContext->Create.NtCreateParameters.AllocationSize.QuadPart;
215	pReq->CreateParms.Info.Attr.fMode = NTToVBoxFileAttributes( RxContext->Create.NtCreateParameters.FileAttributes
216	& ( FILE_ATTRIBUTE_READONLY \| FILE_ATTRIBUTE_HIDDEN
217	\| FILE_ATTRIBUTE_SYSTEM \| FILE_ATTRIBUTE_ARCHIVE));
218
219	/*
220	* Call the host.
221	*/
222	Log(("VBOXSF: vbsfNtCreateWorker: Calling VbglR0SfHostReqCreate(fCreate=%#RX32)...\n", pReq->CreateParms.CreateFlags));
223	int vrc = VbglR0SfHostReqCreate(pNetRootExtension->map.root, pReq);
224	Log(("VBOXSF: vbsfNtCreateWorker: VbglR0SfHostReqCreate returns vrc = %Rrc, Result = 0x%x, Handle = %#RX64\n",
225	vrc, pReq->CreateParms.Result, pReq->CreateParms.Handle));
226
227	if (RT_SUCCESS(vrc))
228	{
229	/*
230	* The request succeeded. Analyze host response,
231	*/
232	switch (pReq->CreateParms.Result)
233	{
234	case SHFL_PATH_NOT_FOUND:
235	/* Path to the object does not exist. */
236	Log(("VBOXSF: vbsfNtCreateWorker: Path not found -> STATUS_OBJECT_PATH_NOT_FOUND + FILE_DOES_NOT_EXIST\n"));
237	*pulCreateAction = FILE_DOES_NOT_EXIST;
238	return STATUS_OBJECT_PATH_NOT_FOUND;
239
240	case SHFL_FILE_NOT_FOUND:
241	*pulCreateAction = FILE_DOES_NOT_EXIST;
242	if (pReq->CreateParms.Handle == SHFL_HANDLE_NIL)
243	{
244	Log(("VBOXSF: vbsfNtCreateWorker: File not found -> STATUS_OBJECT_NAME_NOT_FOUND + FILE_DOES_NOT_EXIST\n"));
245	return STATUS_OBJECT_NAME_NOT_FOUND;
246	}
247	AssertMsgFailed(("VBOXSF: vbsfNtCreateWorker: WTF? File not found but have a handle!\n"));
248	return vbsfNtCreateWorkerBail(STATUS_UNSUCCESSFUL, pReq, pNetRootExtension);
249
250	case SHFL_FILE_EXISTS:
251	Log(("VBOXSF: vbsfNtCreateWorker: File exists, Handle = %#RX64\n", pReq->CreateParms.Handle));
252	if (pReq->CreateParms.Handle == SHFL_HANDLE_NIL)
253	{
254	*pulCreateAction = FILE_EXISTS;
255	if (CreateDisposition == FILE_CREATE)
256	{
257	/* File was not opened because we requested a create. */
258	Log(("VBOXSF: vbsfNtCreateWorker: File exists already, create failed -> STATUS_OBJECT_NAME_COLLISION\n"));
259	return STATUS_OBJECT_NAME_COLLISION;
260	}
261
262	/* Actually we should not go here, unless we have no rights to open the object. */
263	Log(("VBOXSF: vbsfNtCreateWorker: Existing file was not opened! -> STATUS_ACCESS_DENIED\n"));
264	return STATUS_ACCESS_DENIED;
265	}
266
267	/* An existing file was opened. */
268	*pulCreateAction = FILE_OPENED;
269	break;
270
271	case SHFL_FILE_CREATED:
272	Log(("VBOXSF: vbsfNtCreateWorker: File created (Handle=%#RX64) / FILE_CREATED\n", pReq->CreateParms.Handle));
273	/* A new file was created. */
274	Assert(pReq->CreateParms.Handle != SHFL_HANDLE_NIL);
275	*pulCreateAction = FILE_CREATED;
276	break;
277
278	case SHFL_FILE_REPLACED:
279	/* An existing file was replaced or overwritten. */
280	Assert(pReq->CreateParms.Handle != SHFL_HANDLE_NIL);
281	if (CreateDisposition == FILE_SUPERSEDE)
282	{
283	Log(("VBOXSF: vbsfNtCreateWorker: File replaced (Handle=%#RX64) / FILE_SUPERSEDED\n", pReq->CreateParms.Handle));
284	*pulCreateAction = FILE_SUPERSEDED;
285	}
286	else
287	{
288	Log(("VBOXSF: vbsfNtCreateWorker: File replaced (Handle=%#RX64) / FILE_OVERWRITTEN\n", pReq->CreateParms.Handle));
289	*pulCreateAction = FILE_OVERWRITTEN;
290	}
291	break;
292
293	default:
294	Log(("VBOXSF: vbsfNtCreateWorker: Invalid CreateResult from host (0x%08X)\n", pReq->CreateParms.Result));
295	*pulCreateAction = FILE_DOES_NOT_EXIST;
296	return vbsfNtCreateWorkerBail(STATUS_OBJECT_PATH_NOT_FOUND, pReq, pNetRootExtension);
297	}
298
299	/*
300	* Check flags.
301	*/
302	if (!(fOptions & FILE_NON_DIRECTORY_FILE) \|\| !FlagOn(pReq->CreateParms.Info.Attr.fMode, RTFS_DOS_DIRECTORY))
303	{ /* likely */ }
304	else
305	{
306	/* Caller wanted only a file, but the object is a directory. */
307	Log(("VBOXSF: vbsfNtCreateWorker: -> STATUS_FILE_IS_A_DIRECTORY!\n"));
308	return vbsfNtCreateWorkerBail(STATUS_FILE_IS_A_DIRECTORY, pReq, pNetRootExtension);
309	}
310
311	if (!(fOptions & FILE_DIRECTORY_FILE) \|\| FlagOn(pReq->CreateParms.Info.Attr.fMode, RTFS_DOS_DIRECTORY))
312	{ /* likely */ }
313	else
314	{
315	/* Caller wanted only a directory, but the object is not a directory. */
316	Log(("VBOXSF: vbsfNtCreateWorker: -> STATUS_NOT_A_DIRECTORY!\n"));
317	return vbsfNtCreateWorkerBail(STATUS_NOT_A_DIRECTORY, pReq, pNetRootExtension);
318	}
319
320	return STATUS_SUCCESS;
321	}
322
323	/*
324	* Failed. Map some VBoxRC to STATUS codes expected by the system.
325	*/
326	switch (vrc)
327	{
328	case VERR_ALREADY_EXISTS:
329	Log(("VBOXSF: vbsfNtCreateWorker: VERR_ALREADY_EXISTS -> STATUS_OBJECT_NAME_COLLISION + FILE_EXISTS\n"));
330	*pulCreateAction = FILE_EXISTS;
331	return STATUS_OBJECT_NAME_COLLISION;
332
333	/* On POSIX systems, the "mkdir" command returns VERR_FILE_NOT_FOUND when
334	doing a recursive directory create. Handle this case.
335
336	bird: We end up here on windows systems too if opening a dir that doesn't
337	exists. Thus, I've changed the SHFL_PATH_NOT_FOUND to SHFL_FILE_NOT_FOUND
338	so that FsPerf is happy. */
339	case VERR_FILE_NOT_FOUND: /** @todo r=bird: this is a host bug, isn't it? */
340	pReq->CreateParms.Result = SHFL_FILE_NOT_FOUND;
341	pReq->CreateParms.Handle = SHFL_HANDLE_NIL;
342	*pulCreateAction = FILE_DOES_NOT_EXIST;
343	Log(("VBOXSF: vbsfNtCreateWorker: VERR_FILE_NOT_FOUND -> STATUS_OBJECT_NAME_NOT_FOUND + FILE_DOES_NOT_EXIST\n"));
344	return STATUS_OBJECT_NAME_NOT_FOUND;
345
346	default:
347	{
348	*pulCreateAction = FILE_DOES_NOT_EXIST;
349	NTSTATUS Status = vbsfNtVBoxStatusToNt(vrc);
350	Log(("VBOXSF: vbsfNtCreateWorker: %Rrc -> %#010x + FILE_DOES_NOT_EXIST\n", vrc, Status));
351	return Status;
352	}
353	}
354	}
355
356	/**
357	* Create/open a file, directory, ++.
358	*
359	* The RDBSS library will do a table lookup on the path passed in by the user
360	* and therefore share FCBs for objects with the same path.
361	*
362	* The FCB needs to be locked exclusively upon successful return, however it
363	* seems like it's not always locked when we get here (only older RDBSS library
364	* versions?), so we have to check this before returning.
365	*
366	*/
367	NTSTATUS VBoxMRxCreate(IN OUT PRX_CONTEXT RxContext)
368	{
369	RxCaptureFcb;
370	PMRX_NET_ROOT pNetRoot = capFcb->pNetRoot;
371	PMRX_SRV_OPEN pSrvOpen = RxContext->pRelevantSrvOpen;
372	PUNICODE_STRING RemainingName = GET_ALREADY_PREFIXED_NAME_FROM_CONTEXT(RxContext);
373	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(capFcb->pNetRoot);
374
375
376	/*
377	* Log stuff and make some small adjustments to empty paths and caching flags.
378	*/
379	Log(("VBOXSF: VBoxMRxCreate: CreateOptions = %#010x\n", RxContext->Create.NtCreateParameters.CreateOptions));
380	Log(("VBOXSF: VBoxMRxCreate: Disposition = %#010x\n", RxContext->Create.NtCreateParameters.Disposition));
381	Log(("VBOXSF: VBoxMRxCreate: DesiredAccess = %#010x\n", RxContext->Create.NtCreateParameters.DesiredAccess));
382	Log(("VBOXSF: VBoxMRxCreate: ShareAccess = %#010x\n", RxContext->Create.NtCreateParameters.ShareAccess));
383	Log(("VBOXSF: VBoxMRxCreate: FileAttributes = %#010x\n", RxContext->Create.NtCreateParameters.FileAttributes));
384	Log(("VBOXSF: VBoxMRxCreate: AllocationSize = %#RX64\n", RxContext->Create.NtCreateParameters.AllocationSize.QuadPart));
385	Log(("VBOXSF: VBoxMRxCreate: name ptr %p length=%d, SrvOpen->Flags %#010x\n",
386	RemainingName, RemainingName->Length, pSrvOpen->Flags));
387
388	/* Disable FastIO. It causes a verifier bugcheck. */
389	#ifdef SRVOPEN_FLAG_DONTUSE_READ_CACHING
390	SetFlag(pSrvOpen->Flags, SRVOPEN_FLAG_DONTUSE_READ_CACHING \| SRVOPEN_FLAG_DONTUSE_WRITE_CACHING);
391	#else
392	SetFlag(pSrvOpen->Flags, SRVOPEN_FLAG_DONTUSE_READ_CACHEING \| SRVOPEN_FLAG_DONTUSE_WRITE_CACHEING);
393	#endif
394
395	if (RemainingName->Length)
396	Log(("VBOXSF: VBoxMRxCreate: Attempt to open %.*ls\n",
397	RemainingName->Length/sizeof(WCHAR), RemainingName->Buffer));
398	else if (FlagOn(RxContext->Create.Flags, RX_CONTEXT_CREATE_FLAG_STRIPPED_TRAILING_BACKSLASH))
399	{
400	Log(("VBOXSF: VBoxMRxCreate: Empty name -> Only backslash used\n"));
401	RemainingName = &g_UnicodeBackslash;
402	}
403
404	/*
405	* Fend off unsupported and invalid requests before we start allocating memory.
406	*/
407	if ( pNetRoot->Type != NET_ROOT_WILD
408	&& pNetRoot->Type != NET_ROOT_DISK)
409	{
410	Log(("VBOXSF: VBoxMRxCreate: netroot type %d not supported\n",
411	pNetRoot->Type));
412	return STATUS_NOT_IMPLEMENTED;
413	}
414
415	if (RxContext->Create.EaLength == 0)
416	{ /* likely */ }
417	else
418	{
419	Log(("VBOXSF: VBoxMRxCreate: Unsupported: extended attributes!\n"));
420	return STATUS_EAS_NOT_SUPPORTED;
421	}
422
423	if (!(capFcb->FcbState & FCB_STATE_PAGING_FILE))
424	{ /* likely */ }
425	else
426	{
427	Log(("VBOXSF: VBoxMRxCreate: Unsupported: paging file!\n"));
428	return STATUS_NOT_IMPLEMENTED;
429	}
430
431	if (!(RxContext->Create.NtCreateParameters.CreateOptions & FILE_OPEN_BY_FILE_ID))
432	{ /* likely */ }
433	else
434	{
435	Log(("VBOXSF: VBoxMRxCreate: Unsupported: file open by id!\n"));
436	return STATUS_NOT_IMPLEMENTED;
437	}
438
439	/*
440	* Allocate memory for the request.
441	*/
442	bool const fSlashHack = RxContext->CurrentIrpSp
443	&& (RxContext->CurrentIrpSp->Parameters.Create.ShareAccess & VBOX_MJ_CREATE_SLASH_HACK);
444	uint16_t const cbPath = RemainingName->Length;
445	uint32_t const cbPathAll = cbPath + fSlashHack * sizeof(RTUTF16) + sizeof(RTUTF16);
446	AssertReturn(cbPathAll < _64K, STATUS_NAME_TOO_LONG);
447
448	uint32_t const cbReq = RT_UOFFSETOF(VBOXSFCREATEREQ, StrPath.String) + cbPathAll;
449	VBOXSFCREATEREQ pReq = (VBOXSFCREATEREQ )VbglR0PhysHeapAlloc(cbReq);
450	if (pReq)
451	{ }
452	else
453	return STATUS_INSUFFICIENT_RESOURCES;
454
455	/*
456	* Copy out the path string.
457	*/
458	pReq->StrPath.u16Size = (uint16_t)cbPathAll;
459	if (!fSlashHack)
460	{
461	pReq->StrPath.u16Length = cbPath;
462	memcpy(&pReq->StrPath.String, RemainingName->Buffer, cbPath);
463	pReq->StrPath.String.utf16[cbPath / sizeof(RTUTF16)] = '\0';
464	}
465	else
466	{
467	/* HACK ALERT! Here we add back the lsash we had to hide from RDBSS. */
468	pReq->StrPath.u16Length = cbPath + sizeof(RTUTF16);
469	memcpy(&pReq->StrPath.String, RemainingName->Buffer, cbPath);
470	pReq->StrPath.String.utf16[cbPath / sizeof(RTUTF16)] = '\\';
471	pReq->StrPath.String.utf16[cbPath / sizeof(RTUTF16) + 1] = '\0';
472	}
473	Log(("VBOXSF: VBoxMRxCreate: %.*ls\n", pReq->StrPath.u16Length / sizeof(RTUTF16), pReq->StrPath.String.utf16));
474
475	/*
476	* Hand the bulk work off to a worker function to simplify bailout and cleanup.
477	*/
478	ULONG CreateAction = FILE_CREATED;
479	NTSTATUS Status = vbsfNtCreateWorker(RxContext, pReq, &CreateAction, pNetRootExtension, capFcb);
480	if (Status == STATUS_SUCCESS)
481	{
482	Log(("VBOXSF: VBoxMRxCreate: EOF is 0x%RX64 AllocSize is 0x%RX64\n",
483	pReq->CreateParms.Info.cbObject, pReq->CreateParms.Info.cbAllocated));
484	Log(("VBOXSF: VBoxMRxCreate: CreateAction = %#010x\n", CreateAction));
485
486	/*
487	* Create the file object extension.
488	* After this we're out of the woods and nothing more can go wrong.
489	*/
490	PMRX_FOBX pFobx;
491	RxContext->pFobx = pFobx = RxCreateNetFobx(RxContext, pSrvOpen);
492	PMRX_VBOX_FOBX pVBoxFobx = pFobx ? VBoxMRxGetFileObjectExtension(pFobx) : NULL;
493	if (pFobx && pVBoxFobx)
494	{
495	/*
496	* Make sure we've got the FCB locked exclusivly before updating it and returning.
497	* (bird: not entirely sure if this is needed for the W10 RDBSS, but cannot hurt.)
498	*/
499	if (!RxIsFcbAcquiredExclusive(capFcb))
500	RxAcquireExclusiveFcbResourceInMRx(capFcb);
501
502	/*
503	* Initialize our file object extension data.
504	*/
505	pVBoxFobx->Info = pReq->CreateParms.Info;
506	pVBoxFobx->nsUpToDate = RTTimeSystemNanoTS();
507	pVBoxFobx->hFile = pReq->CreateParms.Handle;
508	pVBoxFobx->pSrvCall = RxContext->Create.pSrvCall;
509
510	/* bird: Dunno what this really's about. */
511	pFobx->OffsetOfNextEaToReturn = 1;
512
513	/*
514	* Initialize the FCB if this is the first open.
515	*
516	* Note! The RxFinishFcbInitialization call expects node types as the 2nd parameter,
517	* but is for some reason given enum RX_FILE_TYPE as type.
518	*/
519	if (capFcb->OpenCount == 0)
520	{
521	Log(("VBOXSF: VBoxMRxCreate: Initializing the FCB.\n"));
522	FCB_INIT_PACKET InitPacket;
523	FILE_NETWORK_OPEN_INFORMATION Data;
524	ULONG NumberOfLinks = 0; /** @todo ?? */
525	Data.CreationTime.QuadPart = RTTimeSpecGetNtTime(&pReq->CreateParms.Info.BirthTime);
526	Data.LastAccessTime.QuadPart = RTTimeSpecGetNtTime(&pReq->CreateParms.Info.AccessTime);
527	Data.LastWriteTime.QuadPart = RTTimeSpecGetNtTime(&pReq->CreateParms.Info.ModificationTime);
528	Data.ChangeTime.QuadPart = RTTimeSpecGetNtTime(&pReq->CreateParms.Info.ChangeTime);
529	/** @todo test sparse files. CcSetFileSizes is documented to not want allocation size smaller than EOF offset. */
530	Data.AllocationSize.QuadPart = pReq->CreateParms.Info.cbAllocated;
531	Data.EndOfFile.QuadPart = pReq->CreateParms.Info.cbObject;
532	Data.FileAttributes = VBoxToNTFileAttributes(pReq->CreateParms.Info.Attr.fMode);
533	RxFormInitPacket(InitPacket,
534	&Data.FileAttributes,
535	&NumberOfLinks,
536	&Data.CreationTime,
537	&Data.LastAccessTime,
538	&Data.LastWriteTime,
539	&Data.ChangeTime,
540	&Data.AllocationSize,
541	&Data.EndOfFile,
542	&Data.EndOfFile);
543	if (pReq->CreateParms.Info.Attr.fMode & RTFS_DOS_DIRECTORY)
544	RxFinishFcbInitialization(capFcb, (RX_FILE_TYPE)RDBSS_NTC_STORAGE_TYPE_DIRECTORY, &InitPacket);
545	else
546	RxFinishFcbInitialization(capFcb, (RX_FILE_TYPE)RDBSS_NTC_STORAGE_TYPE_FILE, &InitPacket);
547	}
548
549
550	/*
551	* See if the size has changed and update the FCB if it has.
552	*/
553	if ( capFcb->OpenCount > 0
554	&& capFcb->Header.FileSize.QuadPart != pReq->CreateParms.Info.cbObject)
555	{
556	PFILE_OBJECT pFileObj = RxContext->CurrentIrpSp->FileObject;
557	Assert(pFileObj);
558	if (pFileObj)
559	vbsfNtUpdateFcbSize(pFileObj, capFcb, pVBoxFobx, pReq->CreateParms.Info.cbObject,
560	capFcb->Header.FileSize.QuadPart, pReq->CreateParms.Info.cbAllocated);
561	}
562
563	/*
564	* Set various return values.
565	*/
566
567	/* This is "our" contribution to the buffering flags (no buffering, please). */
568	pSrvOpen->BufferingFlags = 0;
569
570	/* This is the IO_STATUS_BLOCK::Information value, I think. */
571	RxContext->Create.ReturnedCreateInformation = CreateAction;
572
573	/*
574	* Do logging.
575	*/
576	Log(("VBOXSF: VBoxMRxCreate: Info: BirthTime %RI64\n", RTTimeSpecGetNano(&pVBoxFobx->Info.BirthTime)));
577	Log(("VBOXSF: VBoxMRxCreate: Info: ChangeTime %RI64\n", RTTimeSpecGetNano(&pVBoxFobx->Info.ChangeTime)));
578	Log(("VBOXSF: VBoxMRxCreate: Info: ModificationTime %RI64\n", RTTimeSpecGetNano(&pVBoxFobx->Info.ModificationTime)));
579	Log(("VBOXSF: VBoxMRxCreate: Info: AccessTime %RI64\n", RTTimeSpecGetNano(&pVBoxFobx->Info.AccessTime)));
580	Log(("VBOXSF: VBoxMRxCreate: Info: fMode %#RX32\n", pVBoxFobx->Info.Attr.fMode));
581	if (!(pVBoxFobx->Info.Attr.fMode & RTFS_DOS_DIRECTORY))
582	{
583	Log(("VBOXSF: VBoxMRxCreate: Info: cbObject %#RX64\n", pVBoxFobx->Info.cbObject));
584	Log(("VBOXSF: VBoxMRxCreate: Info: cbAllocated %#RX64\n", pVBoxFobx->Info.cbAllocated));
585	}
586	Log(("VBOXSF: VBoxMRxCreate: NetRoot is %p, Fcb is %p, pSrvOpen is %p, Fobx is %p\n",
587	pNetRoot, capFcb, pSrvOpen, RxContext->pFobx));
588	Log(("VBOXSF: VBoxMRxCreate: returns STATUS_SUCCESS\n"));
589	}
590	else
591	{
592	Log(("VBOXSF: VBoxMRxCreate: RxCreateNetFobx failed (pFobx=%p)\n", pFobx));
593	Assert(!pFobx);
594	AssertCompile(sizeof(VBOXSFCLOSEREQ) <= RT_UOFFSETOF(VBOXSFCREATEREQ, CreateParms));
595	VbglR0SfHostReqClose(pNetRootExtension->map.root, (VBOXSFCLOSEREQ *)pReq, pReq->CreateParms.Handle);
596	Status = STATUS_INSUFFICIENT_RESOURCES;
597	}
598	}
599	else
600	Log(("VBOXSF: VBoxMRxCreate: vbsfNtCreateWorker failed %#010x\n", Status));
601	VbglR0PhysHeapFree(pReq);
602	return Status;
603	}
604
605	NTSTATUS VBoxMRxComputeNewBufferingState(IN OUT PMRX_SRV_OPEN pMRxSrvOpen, IN PVOID pMRxContext, OUT PULONG pNewBufferingState)
606	{
607	RT_NOREF(pMRxSrvOpen, pMRxContext, pNewBufferingState);
608	Log(("VBOXSF: MRxComputeNewBufferingState\n"));
609	return STATUS_NOT_SUPPORTED;
610	}
611
612	NTSTATUS VBoxMRxDeallocateForFcb(IN OUT PMRX_FCB pFcb)
613	{
614	RT_NOREF(pFcb);
615	Log(("VBOXSF: MRxDeallocateForFcb\n"));
616	return STATUS_SUCCESS;
617	}
618
619	NTSTATUS VBoxMRxDeallocateForFobx(IN OUT PMRX_FOBX pFobx)
620	{
621	RT_NOREF(pFobx);
622	Log(("VBOXSF: MRxDeallocateForFobx\n"));
623	return STATUS_SUCCESS;
624	}
625
626	NTSTATUS VBoxMRxTruncate(IN PRX_CONTEXT RxContext)
627	{
628	RT_NOREF(RxContext);
629	Log(("VBOXSF: MRxTruncate\n"));
630	return STATUS_NOT_IMPLEMENTED;
631	}
632
633	NTSTATUS VBoxMRxCleanupFobx(IN PRX_CONTEXT RxContext)
634	{
635	PMRX_VBOX_FOBX pVBoxFobx = VBoxMRxGetFileObjectExtension(RxContext->pFobx);
636
637	Log(("VBOXSF: MRxCleanupFobx: pVBoxFobx = %p, Handle = 0x%RX64\n", pVBoxFobx, pVBoxFobx? pVBoxFobx->hFile: 0));
638
639	if (!pVBoxFobx)
640	return STATUS_INVALID_PARAMETER;
641
642	return STATUS_SUCCESS;
643	}
644
645	NTSTATUS VBoxMRxForceClosed(IN PMRX_SRV_OPEN pSrvOpen)
646	{
647	RT_NOREF(pSrvOpen);
648	Log(("VBOXSF: MRxForceClosed\n"));
649	return STATUS_NOT_IMPLEMENTED;
650	}
651
652	/**
653	* Ensures the FCBx doesn't have dangling pointers to @a pVBoxFobx.
654	*
655	* This isn't strictly speaking needed, as nobody currently dereference these
656	* pointers, however better keeping things neath and tidy.
657	*/
658	DECLINLINE(void) vbsfNtCleanupFcbxTimestampRefsOnClose(PMRX_VBOX_FOBX pVBoxFobx, PVBSFNTFCBEXT pVBoxFcbx)
659	{
660	pVBoxFobx->fTimestampsSetByUser = 0;
661	pVBoxFobx->fTimestampsUpdatingSuppressed = 0;
662	pVBoxFobx->fTimestampsImplicitlyUpdated = 0;
663	if (pVBoxFcbx->pFobxLastAccessTime == pVBoxFobx)
664	pVBoxFcbx->pFobxLastAccessTime = NULL;
665	if (pVBoxFcbx->pFobxLastWriteTime == pVBoxFobx)
666	pVBoxFcbx->pFobxLastWriteTime = NULL;
667	if (pVBoxFcbx->pFobxChangeTime == pVBoxFobx)
668	pVBoxFcbx->pFobxChangeTime = NULL;
669	}
670
671	/**
672	* Closes an opened file handle of a MRX_VBOX_FOBX.
673	*
674	* Updates file attributes if necessary.
675	*
676	* Used by VBoxMRxCloseSrvOpen and vbsfNtRename.
677	*/
678	NTSTATUS vbsfNtCloseFileHandle(PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension,
679	PMRX_VBOX_FOBX pVBoxFobx,
680	PVBSFNTFCBEXT pVBoxFcbx)
681	{
682	if (pVBoxFobx->hFile == SHFL_HANDLE_NIL)
683	{
684	Log(("VBOXSF: vbsfCloseFileHandle: SHFL_HANDLE_NIL\n"));
685	return STATUS_SUCCESS;
686	}
687
688	Log(("VBOXSF: vbsfCloseFileHandle: 0x%RX64, fTimestampsUpdatingSuppressed = %#x, fTimestampsImplicitlyUpdated = %#x\n",
689	pVBoxFobx->hFile, pVBoxFobx->fTimestampsUpdatingSuppressed, pVBoxFobx->fTimestampsImplicitlyUpdated));
690
691	/*
692	* We allocate a single request buffer for the timestamp updating and the closing
693	* to save time (at the risk of running out of heap, but whatever).
694	*/
695	union MyCloseAndInfoReq
696	{
697	VBOXSFCLOSEREQ Close;
698	VBOXSFOBJINFOREQ Info;
699	} pReq = (union MyCloseAndInfoReq )VbglR0PhysHeapAlloc(sizeof(*pReq));
700	if (pReq)
701	RT_ZERO(*pReq);
702	else
703	return STATUS_INSUFF_SERVER_RESOURCES;
704
705	/*
706	* Restore timestamp that we may implicitly been updated via this handle
707	* after the user explicitly set them or turn off implict updating (the -1 value).
708	*
709	* Note! We ignore the status of this operation.
710	*/
711	Assert(pVBoxFcbx);
712	uint8_t fUpdateTs = pVBoxFobx->fTimestampsUpdatingSuppressed & pVBoxFobx->fTimestampsImplicitlyUpdated;
713	if (fUpdateTs)
714	{
715	/** @todo skip this if the host is windows and fTimestampsUpdatingSuppressed == fTimestampsSetByUser */
716	/** @todo pass -1 timestamps thru so we can always skip this on windows hosts! */
717	if ( (fUpdateTs & VBOX_FOBX_F_INFO_LASTACCESS_TIME)
718	&& pVBoxFcbx->pFobxLastAccessTime == pVBoxFobx)
719	pReq->Info.ObjInfo.AccessTime = pVBoxFobx->Info.AccessTime;
720	else
721	fUpdateTs &= ~VBOX_FOBX_F_INFO_LASTACCESS_TIME;
722
723	if ( (fUpdateTs & VBOX_FOBX_F_INFO_LASTWRITE_TIME)
724	&& pVBoxFcbx->pFobxLastWriteTime == pVBoxFobx)
725	pReq->Info.ObjInfo.ModificationTime = pVBoxFobx->Info.ModificationTime;
726	else
727	fUpdateTs &= ~VBOX_FOBX_F_INFO_LASTWRITE_TIME;
728
729	if ( (fUpdateTs & VBOX_FOBX_F_INFO_CHANGE_TIME)
730	&& pVBoxFcbx->pFobxChangeTime == pVBoxFobx)
731	pReq->Info.ObjInfo.ChangeTime = pVBoxFobx->Info.ChangeTime;
732	else
733	fUpdateTs &= ~VBOX_FOBX_F_INFO_CHANGE_TIME;
734	if (fUpdateTs)
735	{
736	Log(("VBOXSF: vbsfCloseFileHandle: Updating timestamp: %#x\n", fUpdateTs));
737	int vrc = VbglR0SfHostReqSetObjInfo(pNetRootExtension->map.root, &pReq->Info, pVBoxFobx->hFile);
738	if (RT_FAILURE(vrc))
739	Log(("VBOXSF: vbsfCloseFileHandle: VbglR0SfHostReqSetObjInfo failed for fUpdateTs=%#x: %Rrc\n", fUpdateTs, vrc));
740	RT_NOREF(vrc);
741	}
742	else
743	Log(("VBOXSF: vbsfCloseFileHandle: no timestamp needing updating\n"));
744	}
745
746	vbsfNtCleanupFcbxTimestampRefsOnClose(pVBoxFobx, pVBoxFcbx);
747
748	/*
749	* Now close the handle.
750	*/
751	int vrc = VbglR0SfHostReqClose(pNetRootExtension->map.root, &pReq->Close, pVBoxFobx->hFile);
752
753	pVBoxFobx->hFile = SHFL_HANDLE_NIL;
754
755	VbglR0PhysHeapFree(pReq);
756
757	NTSTATUS const Status = RT_SUCCESS(vrc) ? STATUS_SUCCESS : vbsfNtVBoxStatusToNt(vrc);
758	Log(("VBOXSF: vbsfCloseFileHandle: Returned 0x%08X (vrc=%Rrc)\n", Status, vrc));
759	return Status;
760	}
761
762	/**
763	* @note We don't collapse opens, this is called whenever a handle is closed.
764	*/
765	NTSTATUS VBoxMRxCloseSrvOpen(IN PRX_CONTEXT RxContext)
766	{
767	RxCaptureFcb;
768	RxCaptureFobx;
769
770	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(capFcb->pNetRoot);
771	PMRX_VBOX_FOBX pVBoxFobx = VBoxMRxGetFileObjectExtension(capFobx);
772	PMRX_SRV_OPEN pSrvOpen = capFobx->pSrvOpen;
773
774
775	Log(("VBOXSF: MRxCloseSrvOpen: capFcb = %p, capFobx = %p, pVBoxFobx = %p, pSrvOpen = %p\n",
776	capFcb, capFobx, pVBoxFobx, pSrvOpen));
777
778	#ifdef LOG_ENABLED
779	PUNICODE_STRING pRemainingName = pSrvOpen->pAlreadyPrefixedName;
780	Log(("VBOXSF: MRxCloseSrvOpen: Remaining name = %.*ls, Len = %d\n",
781	pRemainingName->Length / sizeof(WCHAR), pRemainingName->Buffer, pRemainingName->Length));
782	#endif
783
784	if (!pVBoxFobx)
785	return STATUS_INVALID_PARAMETER;
786
787	if (FlagOn(pSrvOpen->Flags, (SRVOPEN_FLAG_FILE_RENAMED \| SRVOPEN_FLAG_FILE_DELETED)))
788	{
789	/* If we renamed or delete the file/dir, then it's already closed */
790	Assert(pVBoxFobx->hFile == SHFL_HANDLE_NIL);
791	Log(("VBOXSF: MRxCloseSrvOpen: File was renamed, handle 0x%RX64 ignore close.\n",
792	pVBoxFobx->hFile));
793	return STATUS_SUCCESS;
794	}
795
796	/*
797	* Remove file or directory if delete action is pending and the this is the last open handle.
798	*/
799	NTSTATUS Status = STATUS_SUCCESS;
800	if (capFcb->FcbState & FCB_STATE_DELETE_ON_CLOSE)
801	{
802	Log(("VBOXSF: MRxCloseSrvOpen: Delete on close. Open count = %d\n",
803	capFcb->OpenCount));
804
805	if (capFcb->OpenCount == 0)
806	Status = vbsfNtRemove(RxContext);
807	}
808
809	/*
810	* Close file if we still have a handle to it.
811	*/
812	if (pVBoxFobx->hFile != SHFL_HANDLE_NIL)
813	vbsfNtCloseFileHandle(pNetRootExtension, pVBoxFobx, VBoxMRxGetFcbExtension(capFcb));
814
815	return Status;
816	}
817
818	/**
819	* Worker for vbsfNtSetBasicInfo and VBoxMRxCloseSrvOpen.
820	*
821	* Only called by vbsfNtSetBasicInfo if there is exactly one open handle. And
822	* VBoxMRxCloseSrvOpen calls it when the last handle is being closed.
823	*/
824	NTSTATUS vbsfNtRemove(IN PRX_CONTEXT RxContext)
825	{
826	RxCaptureFcb;
827	RxCaptureFobx;
828	PMRX_VBOX_NETROOT_EXTENSION pNetRootExtension = VBoxMRxGetNetRootExtension(capFcb->pNetRoot);
829	PMRX_VBOX_FOBX pVBoxFobx = VBoxMRxGetFileObjectExtension(capFobx);
830	PUNICODE_STRING pRemainingName = GET_ALREADY_PREFIXED_NAME_FROM_CONTEXT(RxContext);
831	uint16_t const cwcRemainingName = pRemainingName->Length / sizeof(WCHAR);
832
833	Log(("VBOXSF: vbsfNtRemove: Delete %.*ls. open count = %d\n",
834	cwcRemainingName, pRemainingName->Buffer, capFcb->OpenCount));
835	Assert(RxIsFcbAcquiredExclusive(capFcb));
836
837	/*
838	* We've got function that does both deletion and handle closing starting with 6.0.8,
839	* this saves us a host call when just deleting the file/dir.
840	*/
841	uint32_t const fRemove = pVBoxFobx->Info.Attr.fMode & RTFS_DOS_DIRECTORY ? SHFL_REMOVE_DIR : SHFL_REMOVE_FILE;
842	NTSTATUS Status;
843	int vrc;
844	if (g_uSfLastFunction >= SHFL_FN_CLOSE_AND_REMOVE)
845	{
846	size_t const cbReq = RT_UOFFSETOF(VBOXSFCLOSEANDREMOVEREQ, StrPath.String) + (cwcRemainingName + 1) * sizeof(RTUTF16);
847	VBOXSFCLOSEANDREMOVEREQ pReq = (VBOXSFCLOSEANDREMOVEREQ )VbglR0PhysHeapAlloc((uint32_t)cbReq);
848	if (pReq)
849	RT_ZERO(*pReq);
850	else
851	return STATUS_INSUFFICIENT_RESOURCES;
852
853	memcpy(&pReq->StrPath.String, pRemainingName->Buffer, cwcRemainingName * sizeof(RTUTF16));
854	pReq->StrPath.String.utf16[cwcRemainingName] = '\0';
855	pReq->StrPath.u16Length = cwcRemainingName * 2;
856	pReq->StrPath.u16Size = cwcRemainingName * 2 + (uint16_t)sizeof(RTUTF16);
857	vrc = VbglR0SfHostReqCloseAndRemove(pNetRootExtension->map.root, pReq, fRemove, pVBoxFobx->hFile);
858	pVBoxFobx->hFile = SHFL_HANDLE_NIL;
859
860	VbglR0PhysHeapFree(pReq);
861	}
862	else
863	{
864	/*
865	* We allocate a single request buffer for the closing and deletion to save time.
866	*/
867	AssertCompile(sizeof(VBOXSFCLOSEREQ) <= sizeof(VBOXSFREMOVEREQ));
868	AssertReturn((cwcRemainingName + 1) * sizeof(RTUTF16) < _64K, STATUS_NAME_TOO_LONG);
869	size_t cbReq = RT_UOFFSETOF(VBOXSFREMOVEREQ, StrPath.String) + (cwcRemainingName + 1) * sizeof(RTUTF16);
870	union MyCloseAndRemoveReq
871	{
872	VBOXSFCLOSEREQ Close;
873	VBOXSFREMOVEREQ Remove;
874	} pReq = (union MyCloseAndRemoveReq )VbglR0PhysHeapAlloc((uint32_t)cbReq);
875	if (pReq)
876	RT_ZERO(*pReq);
877	else
878	return STATUS_INSUFFICIENT_RESOURCES;
879
880	/*
881	* Close file first if not already done. We dont use vbsfNtCloseFileHandle here
882	* as we got our own request buffer and have no need to update any file info.
883	*/
884	if (pVBoxFobx->hFile != SHFL_HANDLE_NIL)
885	{
886	int vrcClose = VbglR0SfHostReqClose(pNetRootExtension->map.root, &pReq->Close, pVBoxFobx->hFile);
887	pVBoxFobx->hFile = SHFL_HANDLE_NIL;
888	if (RT_FAILURE(vrcClose))
889	Log(("VBOXSF: vbsfNtRemove: Closing the handle failed! vrcClose %Rrc, hFile %#RX64 (probably)\n",
890	vrcClose, pReq->Close.Parms.u64Handle.u.value64));
891	}
892
893	/*
894	* Try remove the file.
895	*/
896	uint16_t const cwcToCopy = pRemainingName->Length / sizeof(WCHAR);
897	AssertMsgReturnStmt(cwcToCopy == cwcRemainingName,
898	("%#x, was %#x; FCB exclusivity: %d\n", cwcToCopy, cwcRemainingName, RxIsFcbAcquiredExclusive(capFcb)),
899	VbglR0PhysHeapFree(pReq), STATUS_INTERNAL_ERROR);
900	memcpy(&pReq->Remove.StrPath.String, pRemainingName->Buffer, cwcToCopy * sizeof(RTUTF16));
901	pReq->Remove.StrPath.String.utf16[cwcToCopy] = '\0';
902	pReq->Remove.StrPath.u16Length = cwcToCopy * 2;
903	pReq->Remove.StrPath.u16Size = cwcToCopy * 2 + (uint16_t)sizeof(RTUTF16);
904	vrc = VbglR0SfHostReqRemove(pNetRootExtension->map.root, &pReq->Remove, fRemove);
905
906	VbglR0PhysHeapFree(pReq);
907	}
908
909	if (RT_SUCCESS(vrc))
910	{
911	SetFlag(capFobx->pSrvOpen->Flags, SRVOPEN_FLAG_FILE_DELETED);
912	vbsfNtCleanupFcbxTimestampRefsOnClose(pVBoxFobx, VBoxMRxGetFcbExtension(capFcb));
913	Status = STATUS_SUCCESS;
914	}
915	else
916	{
917	Log(("VBOXSF: vbsfNtRemove: %s failed with %Rrc\n",
918	g_uSfLastFunction >= SHFL_FN_CLOSE_AND_REMOVE ? "VbglR0SfHostReqCloseAndRemove" : "VbglR0SfHostReqRemove", vrc));
919	Status = vbsfNtVBoxStatusToNt(vrc);
920	}
921
922	Log(("VBOXSF: vbsfNtRemove: Returned %#010X (%Rrc)\n", Status, vrc));
923	return Status;
924	}
925
926	NTSTATUS VBoxMRxShouldTryToCollapseThisOpen(IN PRX_CONTEXT RxContext)
927	{
928	RT_NOREF(RxContext);
929	Log(("VBOXSF: MRxShouldTryToCollapseThisOpen\n"));
930	return STATUS_MORE_PROCESSING_REQUIRED;
931	}
932
933	NTSTATUS VBoxMRxCollapseOpen(IN OUT PRX_CONTEXT RxContext)
934	{
935	RT_NOREF(RxContext);
936	Log(("VBOXSF: MRxCollapseOpen\n"));
937	return STATUS_MORE_PROCESSING_REQUIRED;
938	}

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source: vbox/trunk/src/VBox/Additions/WINNT/SharedFolders/driver/path.cpp@ 93668

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