Context Navigation

← Previous Revision
Next Revision →
Blame
Revision Log

VBoxSFFile.cpp

Last change on this file was 79710, checked in by vboxsync, 5 years ago
os2/VBoxSF: FS32_OPENCREATE should fail on directories. Corrected attribute filtering calculations in FS32_FINDFIRST (caused COPY . to see directories, causing previous issue). FS32_FINDFROMNAME & FS32_FINDNEXT should not fail if FI_LVL_EAS_FROM_LIST[_64] are requested, we can handle it (FS32_FINDFIRST lets them thru) and WPS needs it for browsing shared folders.
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 66.4 KB

Line
1	/** $Id: VBoxSFFile.cpp 79710 2019-07-12 05:10:42Z vboxsync $ */
2	/** @file
3	* VBoxSF - OS/2 Shared Folders, the file level IFS EPs.
4	*/
5
6	/*
7	* Copyright (c) 2007-2018 knut st. osmundsen <bird-src-spam@anduin.net>
8	*
9	* Permission is hereby granted, free of charge, to any person
10	* obtaining a copy of this software and associated documentation
11	* files (the "Software"), to deal in the Software without
12	* restriction, including without limitation the rights to use,
13	* copy, modify, merge, publish, distribute, sublicense, and/or sell
14	* copies of the Software, and to permit persons to whom the
15	* Software is furnished to do so, subject to the following
16	* conditions:
17	*
18	* The above copyright notice and this permission notice shall be
19	* included in all copies or substantial portions of the Software.
20	*
21	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
23	* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
25	* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26	* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
27	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
28	* OTHER DEALINGS IN THE SOFTWARE.
29	*/
30
31
32	/*********************************************************************************************************************************
33	* Header Files *
34	*********************************************************************************************************************************/
35	#define LOG_GROUP LOG_GROUP_DEFAULT
36	#include "VBoxSFInternal.h"
37
38	#include <VBox/log.h>
39	#include <iprt/asm.h>
40	#include <iprt/assert.h>
41	#include <iprt/err.h>
42	#include <iprt/mem.h>
43
44
45	/*********************************************************************************************************************************
46	* Structures and Typedefs *
47	*********************************************************************************************************************************/
48	/** A preallocated buffer. */
49	typedef struct
50	{
51	RTCCPHYS PhysAddr;
52	void *pvBuf;
53	bool volatile fBusy;
54	} VBOXSFOS2BUF;
55
56
57	/*********************************************************************************************************************************
58	* Global Variables *
59	*********************************************************************************************************************************/
60	/** Buffer spinlock. */
61	static SpinLock_t g_BufferLock;
62	/** 64KB buffers. */
63	static VBOXSFOS2BUF g_aBigBuffers[4];
64
65
66
67	/**
68	* Initialize file buffers.
69	*/
70	void vboxSfOs2InitFileBuffers(void)
71	{
72	KernAllocSpinLock(&g_BufferLock);
73
74	for (uint32_t i = 0; i < RT_ELEMENTS(g_aBigBuffers); i++)
75	{
76	g_aBigBuffers[i].pvBuf = RTMemContAlloc(&g_aBigBuffers[i].PhysAddr, _64K);
77	g_aBigBuffers[i].fBusy = g_aBigBuffers[i].pvBuf == NULL;
78	}
79	}
80
81
82	/**
83	* Allocates a big buffer.
84	* @returns Pointer to buffer on success, NULL on failure.
85	* @param pPhysAddr The physical address of the buffer.
86	*/
87	DECLINLINE(void ) vboxSfOs2AllocBigBuffer(RTGCPHYS pPhysAddr)
88	{
89	KernAcquireSpinLock(&g_BufferLock);
90	for (uint32_t i = 0; i < RT_ELEMENTS(g_aBigBuffers); i++)
91	if (!g_aBigBuffers[i].fBusy)
92	{
93	g_aBigBuffers[i].fBusy = true;
94	KernReleaseSpinLock(&g_BufferLock);
95
96	*pPhysAddr = g_aBigBuffers[i].PhysAddr;
97	return g_aBigBuffers[i].pvBuf;
98	}
99	KernReleaseSpinLock(&g_BufferLock);
100	*pPhysAddr = NIL_RTGCPHYS;
101	return NULL;
102	}
103
104
105	/**
106	* Frees a big buffer.
107	* @param pvBuf The address of the buffer to be freed.
108	*/
109	DECLINLINE(void) vboxSfOs2FreeBigBuffer(void *pvBuf)
110	{
111	Assert(pvBuf);
112	KernAcquireSpinLock(&g_BufferLock);
113	for (uint32_t i = 0; i < RT_ELEMENTS(g_aBigBuffers); i++)
114	if (g_aBigBuffers[i].pvBuf == pvBuf)
115	{
116	Assert(g_aBigBuffers[i].fBusy);
117	g_aBigBuffers[i].fBusy = false;
118	KernReleaseSpinLock(&g_BufferLock);
119	return;
120	}
121	KernReleaseSpinLock(&g_BufferLock);
122	AssertFailed();
123	}
124
125
126	/**
127	* Checks a EA buffer intended for file or directory creation.
128	*
129	* @retval NO_ERROR if empty list.
130	* @retval ERROR_EAS_NOT_SUPPORTED not empty.
131	* @retval ERROR_PROTECTION_VIOLATION if the address is invalid.
132	*
133	* @param pEaOp The EA buffer to check out.
134	*/
135	DECL_NO_INLINE(RT_NOTHING, APIRET) vboxSfOs2CheckEaOpForCreation(EAOP const *pEaOp)
136	{
137	EAOP EaOp = { NULL, NULL, 0 };
138	APIRET rc = KernCopyIn(&EaOp, pEaOp, sizeof(EaOp));
139	Log(("vboxSfOs2CheckEasForCreation: %p: rc=%u %#x %#x %#x\n", pEaOp, rc, EaOp.fpFEAList, EaOp.fpGEAList, EaOp.oError));
140	if (rc == NO_ERROR)
141	{
142	EaOp.fpFEAList = (PFEALIST)KernSelToFlat((uintptr_t)EaOp.fpFEAList);
143	if (EaOp.fpFEAList)
144	{
145	FEALIST FeaList = { 0, {0, 0, 0} };
146	rc = KernCopyIn(&FeaList, EaOp.fpFEAList, sizeof(FeaList));
147	Log(("vboxSfOs2CheckEasForCreation: FeaList %p: rc=%u: %#x {%#x %#x %#x}\n",
148	EaOp.fpFEAList, rc, FeaList.cbList, FeaList.list[0].cbName, FeaList.list[0].cbValue, FeaList.list[0].fEA));
149	if (rc != NO_ERROR)
150	{
151	rc = KernCopyIn(&FeaList, EaOp.fpFEAList, sizeof(FeaList.cbList));
152	Log(("vboxSfOs2CheckEasForCreation: FeaList %p: rc=%u: %#x\n", EaOp.fpFEAList, rc, FeaList.cbList));
153	}
154	if (rc == NO_ERROR && FeaList.cbList > sizeof(FeaList.cbList))
155	rc = ERROR_EAS_NOT_SUPPORTED;
156	}
157	}
158	return rc;
159	}
160
161
162	DECLASM(APIRET)
163	FS32_OPENCREATE(PCDFSI pCdFsi, PVBOXSFCD pCdFsd, PCSZ pszName, LONG offCurDirEnd,
164	PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, ULONG fOpenMode, USHORT fOpenFlags,
165	PUSHORT puAction, ULONG fAttribs, EAOP const *pEaOp, PUSHORT pfGenFlag)
166	{
167	LogFlow(("FS32_OPENCREATE: pCdFsi=%p pCdFsd=%p pszName=%p:{%s} offCurDirEnd=%d pSfFsi=%p pSfFsd=%p fOpenMode=%#x fOpenFlags=%#x puAction=%p fAttribs=%#x pEaOp=%p pfGenFlag=%p\n",
168	pCdFsi, pCdFsd, pszName, pszName, offCurDirEnd, pSfFsi, pSfFsd, fOpenMode, fOpenFlags, puAction, fAttribs, pEaOp, pfGenFlag));
169	RT_NOREF(pfGenFlag, pCdFsi);
170
171	/*
172	* Validate and convert parameters.
173	*/
174	/* No EAs. We may need to put in some effort to determin the absense of EAs,
175	because CMD.exe likes to supply them when opening the source file of a
176	copy operation. */
177	if (!pEaOp)
178	{ /* likely */ }
179	else
180	{
181	switch (fOpenFlags & 0x13)
182	{
183	case OPEN_ACTION_FAIL_IF_EXISTS \| OPEN_ACTION_FAIL_IF_NEW: /* 0x00 */
184	case OPEN_ACTION_OPEN_IF_EXISTS \| OPEN_ACTION_FAIL_IF_NEW: /* 0x01 */
185	LogFlow(("FS32_OPENCREATE: Ignoring EAOP for non-create/replace action (%u).\n",
186	vboxSfOs2CheckEaOpForCreation(pEaOp)));
187	break;
188
189	case OPEN_ACTION_FAIL_IF_EXISTS \| OPEN_ACTION_CREATE_IF_NEW: /* 0x10 */
190	case OPEN_ACTION_OPEN_IF_EXISTS \| OPEN_ACTION_CREATE_IF_NEW: /* 0x11 / /* @todo */
191	case OPEN_ACTION_REPLACE_IF_EXISTS \| OPEN_ACTION_FAIL_IF_NEW: /* 0x02 */
192	case OPEN_ACTION_REPLACE_IF_EXISTS \| OPEN_ACTION_CREATE_IF_NEW: /* 0x12 */
193	{
194	APIRET rc = vboxSfOs2CheckEaOpForCreation(pEaOp);
195	if (rc == NO_ERROR)
196	{
197	Log(("FS32_OPENCREATE: Ignoring empty EAOP.\n"));
198	break;
199	}
200	Log(("FS32_OPENCREATE: Returns %u%s [%p];\n",
201	rc, rc == ERROR_EAS_NOT_SUPPORTED ? " (ERROR_EAS_NOT_SUPPORTED)" : "", pEaOp));
202	return rc;
203	}
204
205	default:
206	LogRel(("FS32_OPENCREATE: Invalid file open flags: %#x\n", fOpenFlags));
207	return VERR_INVALID_PARAMETER;
208	}
209	}
210
211	/* No direct access. */
212	if (!(fOpenMode & OPEN_FLAGS_DASD))
213	{ /* likely */ }
214	else
215	{
216	LogRel(("FS32_OPENCREATE: Returns ERROR_ACCESS_DENIED [DASD];\n"));
217	return ERROR_ACCESS_DENIED;
218	}
219
220	/*
221	* Allocate request buffer and resovle the path to folder and folder relative path.
222	*/
223	PVBOXSFFOLDER pFolder;
224	VBOXSFCREATEREQ *pReq;
225	APIRET rc = vboxSfOs2ResolvePathEx(pszName, pCdFsd, offCurDirEnd, RT_UOFFSETOF(VBOXSFCREATEREQ, StrPath),
226	&pFolder, (void **)&pReq);
227	LogFlow(("FS32_OPENCREATE: vboxSfOs2ResolvePath: -> %u pFolder=%p\n", rc, pFolder));
228	if (rc == NO_ERROR)
229	{ /* likely */ }
230	else
231	return rc;
232
233	/*
234	* Continue validating and converting parameters.
235	*/
236	/* access: */
237	if (fOpenMode & OPEN_ACCESS_READWRITE)
238	pReq->CreateParms.CreateFlags = SHFL_CF_ACCESS_READWRITE \| SHFL_CF_ACCESS_ATTR_READWRITE;
239	else if (fOpenMode & OPEN_ACCESS_WRITEONLY)
240	pReq->CreateParms.CreateFlags = SHFL_CF_ACCESS_WRITE \| SHFL_CF_ACCESS_ATTR_WRITE;
241	else
242	pReq->CreateParms.CreateFlags = SHFL_CF_ACCESS_READ \| SHFL_CF_ACCESS_ATTR_READ; /* read or/and exec */
243
244	/* Sharing: */
245	switch (fOpenMode & (OPEN_SHARE_DENYNONE \| OPEN_SHARE_DENYREADWRITE \| OPEN_SHARE_DENYREAD \| OPEN_SHARE_DENYWRITE))
246	{
247	case OPEN_SHARE_DENYNONE: pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYNONE; break;
248	case OPEN_SHARE_DENYWRITE: pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYWRITE; break;
249	case OPEN_SHARE_DENYREAD: pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYREAD; break;
250	case OPEN_SHARE_DENYREADWRITE: pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYALL; break;
251	case 0: pReq->CreateParms.CreateFlags \|= SHFL_CF_ACCESS_DENYWRITE; break; /* compatibility */
252	default:
253	LogRel(("FS32_OPENCREATE: Invalid file sharing mode: %#x\n", fOpenMode));
254	VbglR0PhysHeapFree(pReq);
255	return VERR_INVALID_PARAMETER;
256
257	}
258
259	/* How to open the file: */
260	switch (fOpenFlags & 0x13)
261	{
262	case OPEN_ACTION_FAIL_IF_EXISTS \| OPEN_ACTION_FAIL_IF_NEW: /* 0x00 */
263	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_FAIL_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW;
264	break;
265	case OPEN_ACTION_FAIL_IF_EXISTS \| OPEN_ACTION_CREATE_IF_NEW: /* 0x10 */
266	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_FAIL_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
267	break;
268	case OPEN_ACTION_OPEN_IF_EXISTS \| OPEN_ACTION_FAIL_IF_NEW: /* 0x01 */
269	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW;
270	break;
271	case OPEN_ACTION_OPEN_IF_EXISTS \| OPEN_ACTION_CREATE_IF_NEW: /* 0x11 */
272	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_OPEN_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
273	break;
274	case OPEN_ACTION_REPLACE_IF_EXISTS \| OPEN_ACTION_FAIL_IF_NEW: /* 0x02 */
275	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_REPLACE_IF_EXISTS \| SHFL_CF_ACT_FAIL_IF_NEW;
276	break;
277	case OPEN_ACTION_REPLACE_IF_EXISTS \| OPEN_ACTION_CREATE_IF_NEW: /* 0x12 */
278	pReq->CreateParms.CreateFlags \|= SHFL_CF_ACT_REPLACE_IF_EXISTS \| SHFL_CF_ACT_CREATE_IF_NEW;
279	break;
280	default:
281	LogRel(("FS32_OPENCREATE: Invalid file open flags: %#x\n", fOpenFlags));
282	VbglR0PhysHeapFree(pReq);
283	return VERR_INVALID_PARAMETER;
284	}
285
286	/* Misc: cache, etc? There seems to be no API for that. */
287
288	/* Attributes: */
289	pReq->CreateParms.Info.Attr.fMode = ((uint32_t)fAttribs << RTFS_DOS_SHIFT) & RTFS_DOS_MASK_OS2;
290
291	/* Initial size: */
292	if (pSfFsi->sfi_sizel > 0)
293	pReq->CreateParms.Info.cbObject = pSfFsi->sfi_sizel;
294
295	/*
296	* Try open the file.
297	*/
298	int vrc = VbglR0SfHostReqCreate(pFolder->idHostRoot, pReq);
299	LogFlow(("FS32_OPENCREATE: VbglR0SfHostReqCreate -> %Rrc Result=%d fMode=%#x\n",
300	vrc, pReq->CreateParms.Result, pReq->CreateParms.Info.Attr.fMode));
301	if (RT_SUCCESS(vrc))
302	{
303	switch (pReq->CreateParms.Result)
304	{
305	case SHFL_FILE_EXISTS:
306	if (pReq->CreateParms.Handle == SHFL_HANDLE_NIL)
307	{
308	rc = ERROR_OPEN_FAILED; //ERROR_FILE_EXISTS;
309	break;
310	}
311	if (RTFS_IS_DIRECTORY(pReq->CreateParms.Info.Attr.fMode))
312	{
313	LogFlow(("FS32_OPENCREATE: directory, closing and returning ERROR_ACCESS_DENIED!\n"));
314	AssertCompile(RTASSERT_OFFSET_OF(VBOXSFCREATEREQ, CreateParms.Handle) > sizeof(VBOXSFCLOSEREQ)); /* no aliasing issues */
315	VbglR0SfHostReqClose(pFolder->idHostRoot, (VBOXSFCLOSEREQ *)pReq, pReq->CreateParms.Handle);
316	rc = ERROR_ACCESS_DENIED;
317	break;
318	}
319	RT_FALL_THRU();
320	case SHFL_FILE_CREATED:
321	case SHFL_FILE_REPLACED:
322	if ( pReq->CreateParms.Info.cbObject < _2G
323	\|\| (fOpenMode & OPEN_FLAGS_LARGEFILE))
324	{
325	pSfFsd->u32Magic = VBOXSFSYFI_MAGIC;
326	pSfFsd->pSelf = pSfFsd;
327	pSfFsd->hHostFile = pReq->CreateParms.Handle;
328	pSfFsd->pFolder = pFolder;
329
330	uint32_t cOpenFiles = ASMAtomicIncU32(&pFolder->cOpenFiles);
331	Assert(cOpenFiles < _32K);
332	pFolder = NULL; /* Reference now taken by pSfFsd->pFolder. */
333
334	pSfFsi->sfi_sizel = pReq->CreateParms.Info.cbObject;
335	pSfFsi->sfi_type = STYPE_FILE;
336	pSfFsi->sfi_DOSattr = (uint8_t)((pReq->CreateParms.Info.Attr.fMode & RTFS_DOS_MASK_OS2) >> RTFS_DOS_SHIFT);
337	int16_t cMinLocalTimeDelta = vboxSfOs2GetLocalTimeDelta();
338	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_cdate, &pSfFsi->sfi_ctime, pReq->CreateParms.Info.BirthTime, cMinLocalTimeDelta);
339	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_adate, &pSfFsi->sfi_atime, pReq->CreateParms.Info.AccessTime, cMinLocalTimeDelta);
340	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_mdate, &pSfFsi->sfi_mtime, pReq->CreateParms.Info.ModificationTime, cMinLocalTimeDelta);
341	if (pReq->CreateParms.Result == SHFL_FILE_CREATED)
342	pSfFsi->sfi_tstamp \|= ST_PCREAT \| ST_SCREAT \| ST_PWRITE \| ST_SWRITE \| ST_PREAD \| ST_SREAD;
343
344	*puAction = pReq->CreateParms.Result == SHFL_FILE_CREATED ? FILE_CREATED
345	: pReq->CreateParms.Result == SHFL_FILE_EXISTS ? FILE_EXISTED
346	: FILE_TRUNCATED;
347
348	Log(("FS32_OPENCREATE: hHandle=%#RX64 for '%s'\n", pSfFsd->hHostFile, pszName));
349	rc = NO_ERROR;
350	}
351	else
352	{
353	LogRel(("FS32_OPENCREATE: cbObject=%#RX64 no OPEN_FLAGS_LARGEFILE (%s)\n", pReq->CreateParms.Info.cbObject, pszName));
354	AssertCompile(RTASSERT_OFFSET_OF(VBOXSFCREATEREQ, CreateParms.Handle) > sizeof(VBOXSFCLOSEREQ)); /* no aliasing issues */
355	VbglR0SfHostReqClose(pFolder->idHostRoot, (VBOXSFCLOSEREQ *)pReq, pReq->CreateParms.Handle);
356	rc = ERROR_ACCESS_DENIED;
357	}
358	break;
359
360	case SHFL_PATH_NOT_FOUND:
361	rc = ERROR_PATH_NOT_FOUND;
362	break;
363
364	default:
365	case SHFL_FILE_NOT_FOUND:
366	rc = ERROR_OPEN_FAILED;
367	break;
368	}
369	}
370	else if (vrc == VERR_ALREADY_EXISTS)
371	rc = ERROR_ACCESS_DENIED;
372	else if (vrc == VERR_FILE_NOT_FOUND)
373	rc = ERROR_OPEN_FAILED;
374	else
375	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_PATH_NOT_FOUND);
376	VbglR0PhysHeapFree(pReq);
377	vboxSfOs2ReleaseFolder(pFolder);
378	LogFlow(("FS32_OPENCREATE: returns %u\n", rc));
379	return rc;
380	}
381
382
383	DECLASM(APIRET)
384	FS32_CLOSE(ULONG uType, ULONG fIoFlags, PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd)
385	{
386	LogFlow(("FS32_CLOSE: uType=%#x fIoFlags=%#x pSfFsi=%p pSfFsd=%p:{%#x, %#llx}\n",
387	uType, fIoFlags, pSfFsi, pSfFsd, pSfFsd->u32Magic, pSfFsd->hHostFile));
388
389	/*
390	* Validate input.
391	*/
392	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
393	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
394	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
395	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
396	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
397	Assert(pFolder->cOpenFiles > 0);
398
399	/*
400	* We only care for when the system is done truly with the file
401	* and we can close it.
402	*/
403	if (uType != FS_CL_FORSYS)
404	return NO_ERROR;
405
406	/** @todo flush file if fIoFlags says so? */
407	RT_NOREF(fIoFlags);
408
409	int vrc = VbglR0SfHostReqCloseSimple(pFolder->idHostRoot, pSfFsd->hHostFile);
410	AssertRC(vrc);
411
412	pSfFsd->hHostFile = SHFL_HANDLE_NIL;
413	pSfFsd->pSelf = NULL;
414	pSfFsd->u32Magic = ~VBOXSFSYFI_MAGIC;
415	pSfFsd->pFolder = NULL;
416
417	ASMAtomicDecU32(&pFolder->cOpenFiles);
418	vboxSfOs2ReleaseFolder(pFolder);
419
420	RT_NOREF(pSfFsi);
421	LogFlow(("FS32_CLOSE: returns NO_ERROR\n"));
422	return NO_ERROR;
423	}
424
425
426	DECLASM(APIRET)
427	FS32_COMMIT(ULONG uType, ULONG fIoFlags, PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd)
428	{
429	LogFlow(("FS32_COMMIT: uType=%#x fIoFlags=%#x pSfFsi=%p pSfFsd=%p:{%#x}\n", uType, fIoFlags, pSfFsi, pSfFsd, pSfFsd->u32Magic));
430
431	/*
432	* Validate input.
433	*/
434	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
435	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
436	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
437	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
438	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
439	Assert(pFolder->cOpenFiles > 0);
440	RT_NOREF(pFolder);
441
442	/*
443	* We only need to flush writable files.
444	*/
445	if ( (pSfFsi->sfi_mode & SFMODE_OPEN_ACCESS) == SFMODE_OPEN_WRITEONLY
446	\|\| (pSfFsi->sfi_mode & SFMODE_OPEN_ACCESS) == SFMODE_OPEN_READWRITE)
447	{
448	int vrc = VbglR0SfHostReqFlushSimple(pFolder->idHostRoot, pSfFsd->hHostFile);
449	if (RT_FAILURE(vrc))
450	{
451	LogRel(("FS32_COMMIT: VbglR0SfHostReqFlushSimple failed: %Rrc\n", vrc));
452	return ERROR_FLUSHBUF_FAILED;
453	}
454	}
455
456	NOREF(uType); NOREF(fIoFlags); NOREF(pSfFsi);
457	LogFlow(("FS32_COMMIT: returns NO_ERROR\n"));
458	return NO_ERROR;
459	}
460
461
462	extern "C" APIRET APIENTRY
463	FS32_CHGFILEPTRL(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, LONGLONG off, ULONG uMethod, ULONG fIoFlags)
464	{
465	LogFlow(("FS32_CHGFILEPTRL: pSfFsi=%p pSfFsd=%p off=%RI64 (%#RX64) uMethod=%u fIoFlags=%#x\n",
466	pSfFsi, pSfFsd, off, off, uMethod, fIoFlags));
467
468	/*
469	* Validate input.
470	*/
471	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
472	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
473	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
474	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
475	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
476	Assert(pFolder->cOpenFiles > 0);
477
478	/*
479	* Calc absolute offset.
480	*/
481	int64_t offNew;
482	switch (uMethod)
483	{
484	case CFP_RELBEGIN:
485	if (off >= 0)
486	{
487	offNew = off;
488	break;
489	}
490	Log(("FS32_CHGFILEPTRL: Negative seek (BEGIN): %RI64\n", off));
491	return ERROR_NEGATIVE_SEEK;
492
493	case CFP_RELCUR:
494	offNew = pSfFsi->sfi_positionl + off;
495	if (offNew >= 0)
496	break;
497	Log(("FS32_CHGFILEPTRL: Negative seek (RELCUR): %RU64 + %RI64\n", pSfFsi->sfi_positionl, off));
498	return ERROR_NEGATIVE_SEEK;
499
500	case CFP_RELEND:
501	{
502	/* Have to consult the host to get the current file size. */
503	VBOXSFOBJINFOREQ pReq = (VBOXSFOBJINFOREQ )VbglR0PhysHeapAlloc(sizeof(*pReq));
504	if (pReq)
505	RT_ZERO(*pReq);
506	else
507	return ERROR_NOT_ENOUGH_MEMORY;
508
509	int vrc = VbglR0SfHostReqQueryObjInfo(pFolder->idHostRoot, pReq, pSfFsd->hHostFile);
510	if (RT_SUCCESS(vrc))
511	{
512	if (pSfFsi->sfi_mode & SFMODE_LARGE_FILE)
513	pSfFsi->sfi_sizel = pReq->ObjInfo.cbObject;
514	else
515	pSfFsi->sfi_sizel = RT_MIN(pReq->ObjInfo.cbObject, _2G - 1);
516	}
517	else
518	LogRel(("FS32_CHGFILEPTRL/CFP_RELEND: VbglR0SfFsInfo failed: %Rrc\n", vrc));
519
520	VbglR0PhysHeapFree(pReq);
521
522	offNew = pSfFsi->sfi_sizel + off;
523	if (offNew >= 0)
524	break;
525	Log(("FS32_CHGFILEPTRL: Negative seek (CFP_RELEND): %RI64 + %RI64\n", pSfFsi->sfi_sizel, off));
526	return ERROR_NEGATIVE_SEEK;
527	}
528
529
530	default:
531	LogRel(("FS32_CHGFILEPTRL: Unknown seek method: %#x\n", uMethod));
532	return ERROR_INVALID_FUNCTION;
533	}
534
535	/*
536	* Commit the seek.
537	*/
538	pSfFsi->sfi_positionl = offNew;
539	LogFlow(("FS32_CHGFILEPTRL: returns; sfi_positionl=%RI64\n", offNew));
540	RT_NOREF_PV(fIoFlags);
541	return NO_ERROR;
542	}
543
544
545	/** Forwards the call to FS32_CHGFILEPTRL. */
546	DECLASM(APIRET)
547	FS32_CHGFILEPTR(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, LONG off, ULONG uMethod, ULONG fIoFlags)
548	{
549	return FS32_CHGFILEPTRL(pSfFsi, pSfFsd, off, uMethod, fIoFlags);
550	}
551
552
553	/**
554	* Worker for FS32_PATHINFO that handles file stat setting.
555	*
556	* @returns OS/2 status code
557	* @param pFolder The folder.
558	* @param pSfFsi The file system independent file structure. We'll
559	* update the timestamps and size here.
560	* @param pSfFsd Out file data.
561	* @param uLevel The information level.
562	* @param pbData The stat data to set.
563	* @param cbData The uLevel specific input size.
564	*/
565	static APIRET
566	vboxSfOs2SetFileInfo(PVBOXSFFOLDER pFolder, PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, ULONG uLevel, PBYTE pbData, ULONG cbData)
567	{
568	APIRET rc;
569
570	/*
571	* Data buffer both for caching user data and for issuing the
572	* change request to the host.
573	*/
574	struct SetFileInfoBuf
575	{
576	union
577	{
578	FILESTATUS Lvl1;
579	FILESTATUS3L Lvl1L;
580	};
581	SHFLFSOBJINFO ObjInfo;
582	} pBuf = (struct SetFileInfoBuf )VbglR0PhysHeapAlloc(sizeof(*pBuf));
583	if (pBuf)
584	{
585	/* Copy in the data. */
586	rc = KernCopyIn(&pBuf->Lvl1, pbData, cbData);
587	if (rc == NO_ERROR)
588	{
589	/*
590	* Join paths with FS32_PATHINFO and FS32_FILEATTRIBUTE.
591	*/
592	rc = vboxSfOs2SetInfoCommonWorker(pFolder, pSfFsd->hHostFile,
593	uLevel == FI_LVL_STANDARD ? pBuf->Lvl1.attrFile : pBuf->Lvl1L.attrFile,
594	&pBuf->Lvl1, &pBuf->ObjInfo, RT_UOFFSETOF(struct SetFileInfoBuf, ObjInfo));
595	if (rc == NO_ERROR)
596	{
597	/*
598	* Update the timestamps in the independent file data with what
599	* the host returned:
600	*/
601	pSfFsi->sfi_tstamp \|= ST_PCREAT \| ST_PWRITE \| ST_PREAD;
602	pSfFsi->sfi_tstamp &= ~(ST_SCREAT \| ST_SWRITE\| ST_SREAD);
603	uint16_t cDelta = vboxSfOs2GetLocalTimeDelta();
604	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_cdate, &pSfFsi->sfi_ctime, pBuf->ObjInfo.BirthTime, cDelta);
605	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_adate, &pSfFsi->sfi_atime, pBuf->ObjInfo.AccessTime, cDelta);
606	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_mdate, &pSfFsi->sfi_mtime, pBuf->ObjInfo.ModificationTime, cDelta);
607
608	/* And the size field as we're at it: */
609	pSfFsi->sfi_sizel = pBuf->ObjInfo.cbObject;
610	}
611	else
612	rc = ERROR_INVALID_PARAMETER;
613	}
614
615	VbglR0PhysHeapFree(pBuf);
616	}
617	else
618	rc = ERROR_NOT_ENOUGH_MEMORY;
619	return rc;
620	}
621
622
623	#if 0
624
625	DECLVBGL(int) VbglR0SfFastPhysFsInfo(PVBGLSFCLIENT pClient, PVBGLSFMAP pMap, SHFLHANDLE hFile,
626	uint32_t flags, uint32_t *pcbBuffer, PSHFLDIRINFO pBuffer)
627	{
628	struct FsInfoReq
629	{
630	VBGLIOCIDCHGCMFASTCALL Hdr;
631	VMMDevHGCMCall Call;
632	VBoxSFParmInformation Parms;
633	HGCMPageListInfo PgLst;
634	RTGCPHYS64 PageTwo;
635	} *pReq;
636	AssertCompileMemberOffset(struct FsInfoReq, Call, 52);
637	AssertCompileMemberOffset(struct FsInfoReq, Parms, 0x60);
638
639	pReq = (struct FsInfoReq )VbglR0PhysHeapAlloc(sizeof(pReq));
640	if (!pReq)
641	return VERR_NO_MEMORY;
642
643	VBGLIOCIDCHGCMFASTCALL_INIT(&pReq->Hdr, VbglR0PhysHeapGetPhysAddr(pReq), &pReq->Call, pClient->idClient,
644	SHFL_FN_INFORMATION, SHFL_CPARMS_INFORMATION, sizeof(*pReq));
645	#if 0
646	VBGLREQHDR_INIT_EX(&pReq->Hdr.Hdr, sizeof(pReq), sizeof(pReq));
647	pReq->Hdr.GCPhysReq = VbglR0PhysHeapGetPhysAddr(pReq) + sizeof(pReq->Hdr);
648	pReq->Hdr.fInterruptible = false;
649
650	pReq->Call.header.header.size = sizeof(*pReq) - sizeof(pReq->Hdr);
651	pReq->Call.header.header.version = VBGLREQHDR_VERSION;
652	pReq->Call.header.header.requestType= VMMDevReq_HGCMCall32;
653	pReq->Call.header.header.rc = VERR_INTERNAL_ERROR;
654	pReq->Call.header.header.reserved1 = 0;
655	pReq->Call.header.header.fRequestor = VMMDEV_REQUESTOR_KERNEL \| VMMDEV_REQUESTOR_USR_DRV_OTHER
656	\| VMMDEV_REQUESTOR_CON_DONT_KNOW \| VMMDEV_REQUESTOR_TRUST_NOT_GIVEN;
657	pReq->Call.header.fu32Flags = 0;
658	pReq->Call.header.result = VERR_INTERNAL_ERROR;
659	pReq->Call.u32ClientID = pClient->idClient;
660	pReq->Call.u32Function = SHFL_FN_INFORMATION;
661	pReq->Call.cParms = SHFL_CPARMS_INFORMATION;
662	#endif
663	uint32_t const cbBuffer = *pcbBuffer;
664	pReq->Parms.id32Root.type = VMMDevHGCMParmType_32bit;
665	pReq->Parms.id32Root.u.value32 = pMap->root;
666	pReq->Parms.u64Handle.type = VMMDevHGCMParmType_64bit;
667	pReq->Parms.u64Handle.u.value64 = hFile;
668	pReq->Parms.f32Flags.type = VMMDevHGCMParmType_32bit;
669	pReq->Parms.f32Flags.u.value32 = flags;
670	pReq->Parms.cb32.type = VMMDevHGCMParmType_32bit;
671	pReq->Parms.cb32.u.value32 = cbBuffer;
672	pReq->Parms.pInfo.type = VMMDevHGCMParmType_PageList;
673	pReq->Parms.pInfo.u.PageList.size = cbBuffer;
674	pReq->Parms.pInfo.u.PageList.offset = RT_UOFFSETOF(struct FsInfoReq, PgLst) - RT_UOFFSETOF(struct FsInfoReq, Call);
675
676	Assert(cbBuffer < _1K);
677	pReq->PgLst.flags = VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST;
678	pReq->PgLst.cPages = cbBuffer <= (PAGE_SIZE - ((uintptr_t)pBuffer & PAGE_OFFSET_MASK)) ? 1 : 2;
679	pReq->PgLst.offFirstPage = (uint16_t)((uintptr_t)pBuffer & PAGE_OFFSET_MASK);
680	pReq->PgLst.aPages[0] = VbglR0PhysHeapGetPhysAddr(pBuffer) & ~(RTGCPHYS64)PAGE_OFFSET_MASK;
681	if (pReq->PgLst.cPages == 1)
682	pReq->PageTwo = NIL_RTGCPHYS64;
683	else
684	pReq->PageTwo = pReq->PgLst.aPages[0] + PAGE_SIZE;
685
686	int rc = VbglR0HGCMFastCall(pClient->handle, &pReq->Hdr, sizeof(*pReq));
687	if (RT_SUCCESS(rc))
688	{
689	rc = pReq->Call.header.result;
690	*pcbBuffer = pReq->Parms.cb32.u.value32;
691	}
692	VbglR0PhysHeapFree(pReq);
693	return rc;
694	}
695
696
697	DECLVBGL(int) VbglR0SfPhysFsInfo(PVBGLSFCLIENT pClient, PVBGLSFMAP pMap, SHFLHANDLE hFile,
698	uint32_t flags, uint32_t *pcbBuffer, PSHFLDIRINFO pBuffer)
699	{
700	uint32_t const cbBuffer = *pcbBuffer;
701
702	struct
703	{
704	VBoxSFInformation Core;
705	HGCMPageListInfo PgLst;
706	RTGCPHYS64 PageTwo;
707	} Req;
708
709	VBGL_HGCM_HDR_INIT_EX(&Req.Core.callInfo, pClient->idClient, SHFL_FN_INFORMATION, SHFL_CPARMS_INFORMATION, sizeof(Req));
710	Req.Core.callInfo.fInterruptible = false;
711
712	Req.Core.root.type = VMMDevHGCMParmType_32bit;
713	Req.Core.root.u.value32 = pMap->root;
714
715	Req.Core.handle.type = VMMDevHGCMParmType_64bit;
716	Req.Core.handle.u.value64 = hFile;
717	Req.Core.flags.type = VMMDevHGCMParmType_32bit;
718	Req.Core.flags.u.value32 = flags;
719	Req.Core.cb.type = VMMDevHGCMParmType_32bit;
720	Req.Core.cb.u.value32 = cbBuffer;
721	Req.Core.info.type = VMMDevHGCMParmType_PageList;
722	Req.Core.info.u.PageList.size = cbBuffer;
723	Req.Core.info.u.PageList.offset = sizeof(Req.Core);
724
725	Assert(cbBuffer < _1K);
726	Req.PgLst.flags = VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST;
727	Req.PgLst.cPages = cbBuffer <= (PAGE_SIZE - ((uintptr_t)pBuffer & PAGE_OFFSET_MASK)) ? 1 : 2;
728	Req.PgLst.offFirstPage = (uint16_t)((uintptr_t)pBuffer & PAGE_OFFSET_MASK);
729	Req.PgLst.aPages[0] = VbglR0PhysHeapGetPhysAddr(pBuffer) & ~(RTGCPHYS64)PAGE_OFFSET_MASK;
730	if (Req.PgLst.cPages == 1)
731	Req.PageTwo = NIL_RTGCPHYS64;
732	else
733	Req.PageTwo = Req.PgLst.aPages[0] + PAGE_SIZE;
734
735	int rc = VbglR0HGCMCallRaw(pClient->handle, &Req.Core.callInfo, sizeof(Req));
736	//Log(("VBOXSF: VbglR0SfFsInfo: VbglR0HGCMCall rc = %#x, result = %#x\n", rc, data.callInfo.Hdr.rc));
737	if (RT_SUCCESS(rc))
738	{
739	rc = Req.Core.callInfo.Hdr.rc;
740	*pcbBuffer = Req.Core.cb.u.value32;
741	}
742	return rc;
743	}
744
745	#endif
746
747
748	/**
749	* Worker for FS32_PATHINFO that handles file stat queries.
750	*
751	* @returns OS/2 status code
752	* @param pFolder The folder.
753	* @param pSfFsi The file system independent file structure. We'll
754	* update the timestamps and size here.
755	* @param pSfFsd Out file data.
756	* @param uLevel The information level.
757	* @param pbData Where to return the data (user address).
758	* @param cbData The amount of data to produce.
759	*/
760	static APIRET
761	vboxSfOs2QueryFileInfo(PVBOXSFFOLDER pFolder, PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, ULONG uLevel, PBYTE pbData, ULONG cbData)
762	{
763	/*
764	* Performance notes (@bugref{9172}):
765	*
766	* This function was used for some performance hacking in an attempt at
767	* squeezing more performance out of the HGCM and shared folders code.
768	*
769	* 0. Skip calling the host and returning zeros:
770	* 906 ns / 3653 ticks
771	*
772	* This is comparable to JFS (859 ns) and HPFS (1107 ns) and give an
773	* idea what we're up against compared to a "local" file system.
774	*
775	* Host build of r126639 with strict VBoxGuest.sys and VBoxSF.ifs
776	* circa r126775, just for establishing some actual base line for (2, 3, +):
777	* (a) 39095 ns / 156757 ticks - VbglR0SfFsInfo.
778	* (b) 35074 ns / 140880 ticks - VbglR0SfPhysFsInfo.
779	*
780	* 1. Having shortcircuted the host side processing by faking a success when
781	* VMMDevHGCM.cpp is about to do pThis->pHGCMDrv->pfnCall, then measuring
782	* various guest side changes in the request and request submission path:
783	*
784	* - Saved by page lists vs virtul address for buffers:
785	* 4095 ns / 16253 ticks / %35.
786	*
787	* Suspect this is due to expensive memory locking on the guest side and
788	* the host doing extra virtual address conversion.
789	*
790	* - Saved by no repackaging the HGCM requests:
791	* 450 ns / 1941 ticks / 5.8%.
792	*
793	* - Embedding the SHFLFSOBJINFO into the buffer may save a little as well:
794	* 286 ns / 1086 ticks / 3.9%.
795	*
796	* Raw data:
797	* 11843 ns / 47469 ticks - VbglR0SfFsInfo.
798	* 7748 ns / 31216 ticks - VbglR0SfPhysFsInfo.
799	* 7298 ns / 29275 ticks - VbglR0SfFastPhysFsInfo.
800	* 7012 ns / 28189 ticks - Embedded buffer.
801	*
802	* 2. Interrupt acknowledgement in VBoxGuest goes to ring-3, which is wasteful.
803	* Played around with handling VMMDevReq_AcknowledgeEvents requests in
804	* ring-0, but since it just returns a 32-bit mask of pending events it was
805	* more natural to implement it as a 32-bit IN operation.
806	*
807	* Saves 4217 ns / 17048 ticks / 13%.
808	*
809	* Raw data:
810	* 32027 ns / 128506 ticks - ring-3 VMMDevReq_AcknowledgeEvents.
811	* 27810 ns / 111458 ticks - fast ring-0 ACK.
812	*
813	* 3. Use single release & auto resetting event semaphore in HGCMThread.
814	*
815	* Saves 922 ns / 3406 ticks / 3.4%.
816	*
817	* Raw data:
818	* 27472 ns / 110237 ticks - RTSEMEVENTMULTI
819	* 26550 ns / 106831 ticks - RTSEMEVENT
820	*
821	* Gain since 0a: 12545 ns / 49926 ticks / 32%
822	* Gain since 0b: 8524 ns / 34049 ticks / 24%
823	*
824	* 4. Try handle VINF_EM_HALT from HMR0 in ring-0, avoiding 4 context switches
825	* and a EM reschduling.
826	*
827	* Saves 1216 ns / 4734 ticks / 4.8%.
828	*
829	* Raw data:
830	* 25595 ns / 102768 ticks - no ring-0 HLT.
831	* 24379 ns / 98034 ticks - ring-0 HLT (42 spins)
832	*
833	* Gain since 0a: 14716 ns / 58723 ticks / 38%
834	* Gain since 0b: 10695 ns / 42846 ticks / 30%
835	*
836	*/
837	#if 0
838	APIRET rc;
839	PSHFLFSOBJINFO pObjInfo = (PSHFLFSOBJINFO)VbglR0PhysHeapAlloc(sizeof(*pObjInfo));
840	if (pObjInfo)
841	{
842	RT_ZERO(*pObjInfo);
843	uint32_t cbObjInfo = sizeof(*pObjInfo);
844
845	int vrc = VbglR0SfFsInfo(&g_SfClient, &pFolder->hHostFolder, pSfFsd->hHostFile,
846	SHFL_INFO_FILE \| SHFL_INFO_GET, &cbObjInfo, (PSHFLDIRINFO)pObjInfo);
847	if (RT_SUCCESS(vrc))
848	{
849	rc = vboxSfOs2FileStatusFromObjInfo(pbData, cbData, uLevel, pObjInfo);
850	if (rc == NO_ERROR)
851	{
852	/* Update the timestamps in the independent file data: */
853	int16_t cMinLocalTimeDelta = vboxSfOs2GetLocalTimeDelta();
854	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_cdate, &pSfFsi->sfi_ctime, pObjInfo->BirthTime, cMinLocalTimeDelta);
855	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_adate, &pSfFsi->sfi_atime, pObjInfo->AccessTime, cMinLocalTimeDelta);
856	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_mdate, &pSfFsi->sfi_mtime, pObjInfo->ModificationTime, cMinLocalTimeDelta);
857
858	/* And the size field as we're at it: */
859	pSfFsi->sfi_sizel = pObjInfo->cbObject;
860	}
861	}
862	else
863	{
864	Log(("vboxSfOs2QueryFileInfo: VbglR0SfFsInfo failed: %Rrc\n", vrc));
865	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_GEN_FAILURE);
866	}
867	VbglR0PhysHeapFree(pObjInfo);
868	}
869	else
870	rc = ERROR_NOT_ENOUGH_MEMORY;
871	#elif 0
872	APIRET rc;
873	struct MyEmbReq
874	{
875	VBGLIOCIDCHGCMFASTCALL Hdr;
876	VMMDevHGCMCall Call;
877	VBoxSFParmInformation Parms;
878	SHFLFSOBJINFO ObjInfo;
879	} pReq = (struct MyEmbReq )VbglR0PhysHeapAlloc(sizeof(*pReq));
880	if (pReq)
881	{
882	RT_ZERO(pReq->ObjInfo);
883
884	VBGLIOCIDCHGCMFASTCALL_INIT(&pReq->Hdr, VbglR0PhysHeapGetPhysAddr(pReq), &pReq->Call, g_SfClient.idClient,
885	SHFL_FN_INFORMATION, SHFL_CPARMS_INFORMATION, sizeof(*pReq));
886	pReq->Parms.id32Root.type = VMMDevHGCMParmType_32bit;
887	pReq->Parms.id32Root.u.value32 = pFolder->idHostRoot;
888	pReq->Parms.u64Handle.type = VMMDevHGCMParmType_64bit;
889	pReq->Parms.u64Handle.u.value64 = pSfFsd->hHostFile;
890	pReq->Parms.f32Flags.type = VMMDevHGCMParmType_32bit;
891	pReq->Parms.f32Flags.u.value32 = SHFL_INFO_FILE \| SHFL_INFO_GET;
892	pReq->Parms.cb32.type = VMMDevHGCMParmType_32bit;
893	pReq->Parms.cb32.u.value32 = sizeof(pReq->ObjInfo);
894	pReq->Parms.pInfo.type = VMMDevHGCMParmType_Embedded;
895	pReq->Parms.pInfo.u.Embedded.cbData = sizeof(pReq->ObjInfo);
896	pReq->Parms.pInfo.u.Embedded.offData = RT_UOFFSETOF(struct MyEmbReq, ObjInfo) - sizeof(VBGLIOCIDCHGCMFASTCALL);
897	pReq->Parms.pInfo.u.Embedded.fFlags = VBOX_HGCM_F_PARM_DIRECTION_FROM_HOST;
898
899	int vrc = VbglR0HGCMFastCall(g_SfClient.handle, &pReq->Hdr, sizeof(*pReq));
900	if (RT_SUCCESS(vrc))
901	vrc = pReq->Call.header.result;
902	if (RT_SUCCESS(vrc))
903	{
904	rc = vboxSfOs2FileStatusFromObjInfo(pbData, cbData, uLevel, &pReq->ObjInfo);
905	if (rc == NO_ERROR)
906	{
907	/* Update the timestamps in the independent file data: */
908	int16_t cMinLocalTimeDelta = vboxSfOs2GetLocalTimeDelta();
909	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_cdate, &pSfFsi->sfi_ctime, pReq->ObjInfo.BirthTime, cMinLocalTimeDelta);
910	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_adate, &pSfFsi->sfi_atime, pReq->ObjInfo.AccessTime, cMinLocalTimeDelta);
911	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_mdate, &pSfFsi->sfi_mtime, pReq->ObjInfo.ModificationTime, cMinLocalTimeDelta);
912
913	/* And the size field as we're at it: */
914	pSfFsi->sfi_sizel = pReq->ObjInfo.cbObject;
915	}
916	}
917	else
918	{
919	Log(("vboxSfOs2QueryFileInfo: VbglR0SfFsInfo failed: %Rrc\n", vrc));
920	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_GEN_FAILURE);
921	}
922
923	VbglR0PhysHeapFree(pReq);
924	}
925	else
926	rc = ERROR_NOT_ENOUGH_MEMORY;
927	#else /* clean version of the above. */
928	APIRET rc;
929	VBOXSFOBJINFOREQ pReq = (VBOXSFOBJINFOREQ )VbglR0PhysHeapAlloc(sizeof(*pReq));
930	if (pReq)
931	{
932	int vrc = VbglR0SfHostReqQueryObjInfo(pFolder->idHostRoot, pReq, pSfFsd->hHostFile);
933	if (RT_SUCCESS(vrc))
934	{
935	rc = vboxSfOs2FileStatusFromObjInfo(pbData, cbData, uLevel, &pReq->ObjInfo);
936	if (rc == NO_ERROR)
937	{
938	/* Update the timestamps in the independent file data: */
939	int16_t cMinLocalTimeDelta = vboxSfOs2GetLocalTimeDelta();
940	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_cdate, &pSfFsi->sfi_ctime, pReq->ObjInfo.BirthTime, cMinLocalTimeDelta);
941	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_adate, &pSfFsi->sfi_atime, pReq->ObjInfo.AccessTime, cMinLocalTimeDelta);
942	vboxSfOs2DateTimeFromTimeSpec(&pSfFsi->sfi_mdate, &pSfFsi->sfi_mtime, pReq->ObjInfo.ModificationTime, cMinLocalTimeDelta);
943
944	/* And the size field as we're at it: */
945	pSfFsi->sfi_sizel = pReq->ObjInfo.cbObject;
946	}
947	}
948	else
949	{
950	Log(("vboxSfOs2QueryFileInfo: VbglR0SfHostReqQueryObjInfo failed: %Rrc\n", vrc));
951	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_GEN_FAILURE);
952	}
953
954	VbglR0PhysHeapFree(pReq);
955	}
956	else
957	rc = ERROR_NOT_ENOUGH_MEMORY;
958	#endif
959	return rc;
960	}
961
962
963	DECLASM(APIRET)
964	FS32_FILEINFO(ULONG fFlags, PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, ULONG uLevel,
965	PBYTE pbData, ULONG cbData, ULONG fIoFlags)
966	{
967	LogFlow(("FS32_FILEINFO: fFlags=%#x pSfFsi=%p pSfFsd=%p uLevel=%p pbData=%p cbData=%#x fIoFlags=%#x\n",
968	fFlags, pSfFsi, pSfFsd, uLevel, pbData, cbData, fIoFlags));
969
970	/*
971	* Validate input.
972	*/
973	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
974	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
975	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
976	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
977	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
978	Assert(pFolder->cOpenFiles > 0);
979
980	/*
981	* Check the level.
982	* Note! See notes in FS32_PATHINFO.
983	*/
984	ULONG cbMinData;
985	switch (uLevel)
986	{
987	case FI_LVL_STANDARD:
988	cbMinData = sizeof(FILESTATUS);
989	AssertCompileSize(FILESTATUS, 0x16);
990	break;
991	case FI_LVL_STANDARD_64:
992	cbMinData = sizeof(FILESTATUS3L);
993	AssertCompileSize(FILESTATUS3L, 0x20); /* cbFile and cbFileAlloc are misaligned. */
994	break;
995	case FI_LVL_STANDARD_EASIZE:
996	cbMinData = sizeof(FILESTATUS2);
997	AssertCompileSize(FILESTATUS2, 0x1a);
998	break;
999	case FI_LVL_STANDARD_EASIZE_64:
1000	cbMinData = sizeof(FILESTATUS4L);
1001	AssertCompileSize(FILESTATUS4L, 0x24); /* cbFile and cbFileAlloc are misaligned. */
1002	break;
1003	case FI_LVL_EAS_FROM_LIST:
1004	case FI_LVL_EAS_FULL:
1005	case FI_LVL_EAS_FULL_5:
1006	case FI_LVL_EAS_FULL_8:
1007	cbMinData = sizeof(EAOP);
1008	break;
1009	default:
1010	LogRel(("FS32_PATHINFO: Unsupported info level %u!\n", uLevel));
1011	return ERROR_INVALID_LEVEL;
1012	}
1013	if (cbData < cbMinData \|\| pbData == NULL)
1014	{
1015	Log(("FS32_FILEINFO: ERROR_BUFFER_OVERFLOW (cbMinData=%#x, cbData=%#x)\n", cbMinData, cbData));
1016	return ERROR_BUFFER_OVERFLOW;
1017	}
1018
1019	/*
1020	* Query information.
1021	*/
1022	APIRET rc;
1023	if (fFlags == FI_RETRIEVE)
1024	{
1025	switch (uLevel)
1026	{
1027	case FI_LVL_STANDARD:
1028	case FI_LVL_STANDARD_EASIZE:
1029	case FI_LVL_STANDARD_64:
1030	case FI_LVL_STANDARD_EASIZE_64:
1031	rc = vboxSfOs2QueryFileInfo(pFolder, pSfFsi, pSfFsd, uLevel, pbData, cbMinData);
1032	break;
1033
1034	/*
1035	* We don't do EAs and we "just" need to return no-EAs.
1036	* However, that's not as easy as you might think.
1037	*/
1038	case FI_LVL_EAS_FROM_LIST:
1039	case FI_LVL_EAS_FULL:
1040	case FI_LVL_EAS_FULL_5:
1041	case FI_LVL_EAS_FULL_8:
1042	rc = vboxSfOs2MakeEmptyEaList((PEAOP)pbData, uLevel);
1043	break;
1044
1045	default:
1046	AssertFailed();
1047	rc = ERROR_GEN_FAILURE;
1048	break;
1049	}
1050	}
1051	/*
1052	* Update information.
1053	*/
1054	else if (fFlags == FI_SET)
1055	{
1056	switch (uLevel)
1057	{
1058	case FI_LVL_STANDARD:
1059	case FI_LVL_STANDARD_64:
1060	rc = vboxSfOs2SetFileInfo(pFolder, pSfFsi, pSfFsd, uLevel, pbData, cbMinData);
1061	break;
1062
1063	case FI_LVL_STANDARD_EASIZE:
1064	rc = ERROR_EAS_NOT_SUPPORTED;
1065	break;
1066
1067	case FI_LVL_STANDARD_EASIZE_64:
1068	case FI_LVL_EAS_FROM_LIST:
1069	case FI_LVL_EAS_FULL:
1070	case FI_LVL_EAS_FULL_5:
1071	case FI_LVL_EAS_FULL_8:
1072	rc = ERROR_INVALID_LEVEL;
1073	break;
1074
1075	default:
1076	AssertFailed();
1077	rc = ERROR_GEN_FAILURE;
1078	break;
1079	}
1080	}
1081	else
1082	{
1083	LogRel(("FS32_FILEINFO: Unknown flags value: %#x\n", fFlags));
1084	rc = ERROR_INVALID_PARAMETER;
1085	}
1086	RT_NOREF_PV(fIoFlags);
1087	return rc;
1088	}
1089
1090
1091	DECLASM(APIRET)
1092	FS32_NEWSIZEL(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, LONGLONG cbFile, ULONG fIoFlags)
1093	{
1094	LogFlow(("FS32_NEWSIZEL: pSfFsi=%p pSfFsd=%p cbFile=%RI64 (%#RX64) fIoFlags=%#x\n", pSfFsi, pSfFsd, cbFile, cbFile, fIoFlags));
1095
1096	/*
1097	* Validate input.
1098	*/
1099	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1100	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1101	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1102	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1103	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1104	Assert(pFolder->cOpenFiles > 0);
1105	if (cbFile < 0)
1106	{
1107	LogRel(("FS32_NEWSIZEL: Negative size: %RI64\n", cbFile));
1108	return ERROR_INVALID_PARAMETER;
1109	}
1110
1111	/*
1112	* This should only be possible on a file that is writable.
1113	*/
1114	APIRET rc;
1115	if ( (pSfFsi->sfi_mode & SFMODE_OPEN_ACCESS) == SFMODE_OPEN_WRITEONLY
1116	\|\| (pSfFsi->sfi_mode & SFMODE_OPEN_ACCESS) == SFMODE_OPEN_READWRITE)
1117	{
1118	/*
1119	* Call the host.
1120	*/
1121	int vrc = VbglR0SfHostReqSetFileSizeSimple(pFolder->idHostRoot, pSfFsd->hHostFile, cbFile);
1122	if (RT_SUCCESS(vrc))
1123	{
1124	pSfFsi->sfi_sizel = cbFile;
1125	rc = NO_ERROR;
1126	}
1127	else
1128	{
1129	LogRel(("FS32_NEWSIZEL: VbglR0SfFsInfo failed: %Rrc\n", vrc));
1130	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_GEN_FAILURE);
1131	}
1132	}
1133	else
1134	rc = ERROR_ACCESS_DENIED;
1135
1136	RT_NOREF(fIoFlags);
1137	LogFlow(("FS32_NEWSIZEL: returns %u\n", rc));
1138	return rc;
1139	}
1140
1141
1142	/**
1143	* Convert KernVMLock page list to HGCM page list.
1144	*
1145	* The trouble is that it combine pages.
1146	*/
1147	static void vboxSfOs2ConvertPageList(KernPageList_t volatile paSrc, RTGCPHYS64 volatile paDst, ULONG cSrc, uint32_t cDst)
1148	{
1149	LogFlow(("vboxSfOs2ConvertPageList: %d vs %d\n", cSrc, cDst));
1150
1151	/* If the list have identical length, the job is easy. */
1152	if (cSrc == cDst)
1153	for (uint32_t i = 0; i < cSrc; i++)
1154	paDst[i] &= ~(uint32_t)PAGE_OFFSET_MASK;
1155	else
1156	{
1157	Assert(cSrc <= cDst);
1158	Assert(cSrc > 0);
1159
1160	/*
1161	* We have fewer source entries than destiation pages, so something needs
1162	* expanding. The fact that the first and last pages might be partial ones
1163	* makes this more interesting. We have to do it backwards, of course.
1164	*/
1165
1166	/* Deal with the partial page stuff first. */
1167	paSrc[0].Size += paSrc[0].Addr & PAGE_OFFSET_MASK;
1168	paSrc[0].Addr &= ~(ULONG)PAGE_OFFSET_MASK;
1169	paSrc[cSrc - 1].Size = RT_ALIGN_32(paSrc[cSrc - 1].Size, PAGE_SIZE);
1170
1171	/* The go do work on the conversion. */
1172	uint32_t iDst = cDst;
1173	uint32_t iSrc = cSrc;
1174	while (iSrc-- > 0)
1175	{
1176	ULONG cbSrc = paSrc[iSrc].Size;
1177	ULONG uAddrSrc = paSrc[iSrc].Addr + cbSrc;
1178	Assert(!(cbSrc & PAGE_OFFSET_MASK));
1179	Assert(!(uAddrSrc & PAGE_OFFSET_MASK));
1180	while (cbSrc > 0)
1181	{
1182	uAddrSrc -= PAGE_SIZE;
1183	Assert(iDst > 0);
1184	paDst[--iDst] = uAddrSrc;
1185	cbSrc -= PAGE_SIZE;
1186	}
1187	}
1188	Assert(iDst == 0);
1189	}
1190	}
1191
1192
1193	/**
1194	* Helper for FS32_READ.
1195	*
1196	* @note Must not called if reading beyond the end of the file, as we would give
1197	* sfi_sizel an incorrect value then.
1198	*/
1199	DECLINLINE(uint32_t) vboxSfOs2ReadFinalize(PSFFSI pSfFsi, uint64_t offRead, uint32_t cbActual)
1200	{
1201	pSfFsi->sfi_positionl = offRead + cbActual;
1202	if ((uint64_t)pSfFsi->sfi_sizel < offRead + cbActual)
1203	pSfFsi->sfi_sizel = offRead + cbActual;
1204	pSfFsi->sfi_tstamp \|= ST_SREAD \| ST_PREAD;
1205	return cbActual;
1206	}
1207
1208
1209	extern "C" APIRET APIENTRY
1210	FS32_READ(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, PVOID pvData, PULONG pcb, ULONG fIoFlags)
1211	{
1212	LogFlow(("FS32_READ: pSfFsi=%p pSfFsd=%p pvData=%p pcb=%p:{%#x} fIoFlags=%#x\n", pSfFsi, pSfFsd, pvData, pcb, *pcb, fIoFlags));
1213
1214	/*
1215	* Validate and extract input.
1216	*/
1217	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1218	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1219	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1220	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1221	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1222	Assert(pFolder->cOpenFiles > 0);
1223	RT_NOREF(pFolder);
1224
1225	uint64_t const offRead = pSfFsi->sfi_positionl;
1226	uint32_t const cbToRead = *pcb;
1227	uint32_t cbActual = cbToRead;
1228
1229	/*
1230	* We'll try embedded buffers for reads a smaller than ~2KB if we get
1231	* a heap block that's entirely within one page so the host can lock it
1232	* and avoid bouncing it off the heap on completion.
1233	*/
1234	if (cbToRead <= _2K)
1235	{
1236	size_t cbReq = RT_UOFFSETOF(VBOXSFREADEMBEDDEDREQ, abData[0]) + cbToRead;
1237	VBOXSFREADEMBEDDEDREQ pReq = (VBOXSFREADEMBEDDEDREQ )VbglR0PhysHeapAlloc(cbReq);
1238	if ( pReq != NULL
1239	&& ( PAGE_SIZE - (PAGE_OFFSET_MASK & (uintptr_t)pReq) >= cbReq
1240	\|\| cbToRead == 0))
1241	{
1242	APIRET rc;
1243	int vrc = VbglR0SfHostReqReadEmbedded(pFolder->idHostRoot, pReq, pSfFsd->hHostFile, offRead, cbToRead);
1244	if (RT_SUCCESS(vrc))
1245	{
1246	cbActual = pReq->Parms.cb32Read.u.value32;
1247	if (cbActual > 0)
1248	{
1249	AssertStmt(cbActual <= cbToRead, cbActual = cbToRead);
1250	rc = KernCopyOut(pvData, &pReq->abData[0], cbActual);
1251	if (rc == NO_ERROR)
1252	{
1253	*pcb = vboxSfOs2ReadFinalize(pSfFsi, offRead, cbActual);
1254	LogFlow(("FS32_READ: returns; cbActual=%#x sfi_positionl=%RI64 [embedded]\n", cbActual, pSfFsi->sfi_positionl));
1255	}
1256	}
1257	else
1258	{
1259	LogFlow(("FS32_READ: returns; cbActual=0 (EOF); sfi_positionl=%RI64 [embedded]\n", pSfFsi->sfi_positionl));
1260	*pcb = 0;
1261	rc = NO_ERROR;
1262	}
1263	}
1264	else
1265	{
1266	Log(("FS32_READ: VbglR0SfHostReqReadEmbedded(off=%#RU64,cb=%#x) -> %Rrc [embedded]\n", offRead, cbToRead, vrc));
1267	rc = ERROR_BAD_NET_RESP;
1268	}
1269	VbglR0PhysHeapFree(pReq);
1270	return rc;
1271	}
1272	if (pReq)
1273	VbglR0PhysHeapFree(pReq);
1274	}
1275
1276	/*
1277	* Whatever we do now we're going to use a page list request structure.
1278	* So, we do one allocation large enough for both code paths below.
1279	*/
1280	uint32_t cPages = ((cbToRead + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
1281	VBOXSFREADPGLSTREQ pReq = (VBOXSFREADPGLSTREQ )VbglR0PhysHeapAlloc(RT_UOFFSETOF_DYN(VBOXSFREADPGLSTREQ, PgLst.aPages[cPages]));
1282	if (pReq)
1283	{ /* likely */ }
1284	else
1285	{
1286	LogRel(("FS32_READ: Out of memory for page list request (%u pages)\n", cPages));
1287	return ERROR_NOT_ENOUGH_MEMORY;
1288	}
1289
1290	/*
1291	* If the request is less than 16KB or smaller, we try bounce it off the
1292	* physical heap (slab size is 64KB). For requests up to 64KB we try use
1293	* one of a handful of preallocated big buffers rather than the phys heap.
1294	*/
1295	if (cbToRead <= _64K)
1296	{
1297	RTGCPHYS GCPhys;
1298	void *pvBuf = NULL;
1299	if (cbToRead <= _16K)
1300	{
1301	pvBuf = VbglR0PhysHeapAlloc(cbToRead);
1302	GCPhys = pvBuf ? VbglR0PhysHeapGetPhysAddr(pvBuf) : NIL_RTGCPHYS;
1303	}
1304	else
1305	pvBuf = vboxSfOs2AllocBigBuffer(&GCPhys);
1306	if (pvBuf)
1307	{
1308	APIRET rc;
1309	int vrc = VbglR0SfHostReqReadContig(pFolder->idHostRoot, pReq, pSfFsd->hHostFile, offRead, cbToRead, pvBuf, GCPhys);
1310	if (RT_SUCCESS(vrc))
1311	{
1312	cbActual = pReq->Parms.cb32Read.u.value32;
1313	if (cbActual > 0)
1314	{
1315	AssertStmt(cbActual <= cbToRead, cbActual = cbToRead);
1316	rc = KernCopyOut(pvData, pvBuf, cbActual);
1317	if (rc == NO_ERROR)
1318	{
1319	*pcb = vboxSfOs2ReadFinalize(pSfFsi, offRead, cbActual);
1320	LogFlow(("FS32_READ: returns; cbActual=%#x sfi_positionl=%RI64 [bounced]\n", cbActual, pSfFsi->sfi_positionl));
1321	}
1322	}
1323	else
1324	{
1325	LogFlow(("FS32_READ: returns; cbActual=0 (EOF) sfi_positionl=%RI64 [bounced]\n", pSfFsi->sfi_positionl));
1326	*pcb = 0;
1327	rc = NO_ERROR;
1328	}
1329	}
1330	else
1331	{
1332	Log(("FS32_READ: VbglR0SfHostReqReadEmbedded(off=%#RU64,cb=%#x) -> %Rrc [bounced]\n", offRead, cbToRead, vrc));
1333	rc = ERROR_BAD_NET_RESP;
1334	}
1335
1336	if (cbToRead <= _16K)
1337	VbglR0PhysHeapFree(pvBuf);
1338	else
1339	vboxSfOs2FreeBigBuffer(pvBuf);
1340	VbglR0PhysHeapFree(pReq);
1341	return rc;
1342	}
1343	}
1344
1345	/*
1346	* We couldn't use a bounce buffer for it, so lock the buffer pages.
1347	*/
1348	KernVMLock_t Lock;
1349	ULONG cPagesRet;
1350	AssertCompile(sizeof(KernPageList_t) == sizeof(pReq->PgLst.aPages[0]));
1351	APIRET rc = KernVMLock(VMDHL_LONG \| VMDHL_WRITE, (void *)pvData, cbToRead, &Lock,
1352	(KernPageList_t *)&pReq->PgLst.aPages[0], &cPagesRet);
1353	if (rc == NO_ERROR)
1354	{
1355	pReq->PgLst.offFirstPage = (uint16_t)(uintptr_t)pvData & (uint16_t)PAGE_OFFSET_MASK;
1356	cPages = (cbToRead + ((uint16_t)(uintptr_t)pvData & (uint16_t)PAGE_OFFSET_MASK) + PAGE_SIZE - 1) >> PAGE_SHIFT;
1357	vboxSfOs2ConvertPageList((KernPageList_t volatile *)&pReq->PgLst.aPages[0], &pReq->PgLst.aPages[0], cPagesRet, cPages);
1358
1359	int vrc = VbglR0SfHostReqReadPgLst(pFolder->idHostRoot, pReq, pSfFsd->hHostFile, offRead, cbToRead, cPages);
1360	if (RT_SUCCESS(vrc))
1361	{
1362	cbActual = pReq->Parms.cb32Read.u.value32;
1363	if (cbActual > 0)
1364	{
1365	AssertStmt(cbActual <= cbToRead, cbActual = cbToRead);
1366	*pcb = vboxSfOs2ReadFinalize(pSfFsi, offRead, cbActual);
1367	LogFlow(("FS32_READ: returns; cbActual=%#x sfi_positionl=%RI64 [locked]\n", cbActual, pSfFsi->sfi_positionl));
1368	}
1369	else
1370	{
1371	LogFlow(("FS32_READ: returns; cbActual=0 (EOF) sfi_positionl=%RI64 [locked]\n", pSfFsi->sfi_positionl));
1372	*pcb = 0;
1373	rc = NO_ERROR;
1374	}
1375	}
1376	else
1377	{
1378	Log(("FS32_READ: VbglR0SfHostReqReadEmbedded(off=%#RU64,cb=%#x) -> %Rrc [locked]\n", offRead, cbToRead, vrc));
1379	rc = ERROR_BAD_NET_RESP;
1380	}
1381
1382	KernVMUnlock(&Lock);
1383	}
1384	else
1385	Log(("FS32_READ: KernVMLock(,%p,%#x,) failed -> %u\n", pvData, cbToRead, rc));
1386	VbglR0PhysHeapFree(pReq);
1387	RT_NOREF_PV(fIoFlags);
1388	return rc;
1389	}
1390
1391
1392	/**
1393	* Helper for FS32_WRITE.
1394	*/
1395	DECLINLINE(uint32_t) vboxSfOs2WriteFinalize(PSFFSI pSfFsi, uint64_t offWrite, uint32_t cbActual)
1396	{
1397	pSfFsi->sfi_positionl = offWrite + cbActual;
1398	if ((uint64_t)pSfFsi->sfi_sizel < offWrite + cbActual)
1399	pSfFsi->sfi_sizel = offWrite + cbActual;
1400	pSfFsi->sfi_tstamp \|= ST_SWRITE \| ST_PWRITE;
1401	return cbActual;
1402	}
1403
1404
1405	extern "C" APIRET APIENTRY
1406	FS32_WRITE(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, void const *pvData, PULONG pcb, ULONG fIoFlags)
1407	{
1408	/*
1409	* Validate and extract input.
1410	*/
1411	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1412	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1413	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1414	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1415	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1416	Assert(pFolder->cOpenFiles > 0);
1417	RT_NOREF(pFolder);
1418
1419	uint64_t offWrite = pSfFsi->sfi_positionl;
1420	uint32_t cbToWrite = *pcb;
1421	uint32_t cbActual = cbToWrite;
1422
1423	/*
1424	* We'll try embedded buffers for writes a smaller than ~2KB if we get
1425	* a heap block that's entirely within one page so the host can lock it
1426	* and avoid bouncing it off the heap on completion.
1427	*/
1428	if (cbToWrite <= _2K)
1429	{
1430	size_t cbReq = RT_UOFFSETOF(VBOXSFWRITEEMBEDDEDREQ, abData[0]) + cbToWrite;
1431	VBOXSFWRITEEMBEDDEDREQ pReq = (VBOXSFWRITEEMBEDDEDREQ )VbglR0PhysHeapAlloc(cbReq);
1432	if ( pReq != NULL
1433	&& ( PAGE_SIZE - (PAGE_OFFSET_MASK & (uintptr_t)pReq) >= cbReq
1434	\|\| cbToWrite == 0))
1435	{
1436	APIRET rc = KernCopyIn(&pReq->abData[0], pvData, cbToWrite);
1437	if (rc == NO_ERROR)
1438	{
1439	int vrc = VbglR0SfHostReqWriteEmbedded(pFolder->idHostRoot, pReq, pSfFsd->hHostFile, offWrite, cbToWrite);
1440	if (RT_SUCCESS(vrc))
1441	{
1442	cbActual = pReq->Parms.cb32Write.u.value32;
1443	AssertStmt(cbActual <= cbToWrite, cbActual = cbToWrite);
1444	*pcb = vboxSfOs2WriteFinalize(pSfFsi, offWrite, cbActual);
1445	LogFlow(("FS32_WRITE: returns; cbActual=%#x sfi_positionl=%RI64 [embedded]\n", cbActual, pSfFsi->sfi_positionl));
1446	}
1447	else
1448	{
1449	Log(("FS32_WRITE: VbglR0SfHostReqWriteEmbedded(off=%#RU64,cb=%#x) -> %Rrc [embedded]\n", offWrite, cbToWrite, vrc));
1450	rc = ERROR_BAD_NET_RESP;
1451	}
1452	}
1453	VbglR0PhysHeapFree(pReq);
1454	return rc;
1455	}
1456	if (pReq)
1457	VbglR0PhysHeapFree(pReq);
1458	}
1459
1460	/*
1461	* Whatever we do now we're going to use a page list request structure.
1462	* So, we do one allocation large enough for both code paths below.
1463	*/
1464	uint32_t cPages = ((cbToWrite + PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
1465	VBOXSFWRITEPGLSTREQ pReq = (VBOXSFWRITEPGLSTREQ )VbglR0PhysHeapAlloc(RT_UOFFSETOF_DYN(VBOXSFWRITEPGLSTREQ, PgLst.aPages[cPages]));
1466	if (pReq)
1467	{ /* likely */ }
1468	else
1469	{
1470	LogRel(("FS32_WRITE: Out of memory for page list request (%u pages)\n", cPages));
1471	return ERROR_NOT_ENOUGH_MEMORY;
1472	}
1473
1474	/*
1475	* If the request is less than 16KB or smaller, we try bounce it off the
1476	* physical heap (slab size is 64KB). For requests up to 64KB we try use
1477	* one of a handful of preallocated big buffers rather than the phys heap.
1478	*/
1479	if (cbToWrite <= _64K)
1480	{
1481	RTGCPHYS GCPhys;
1482	void *pvBuf = NULL;
1483	if (cbToWrite <= _16K)
1484	{
1485	pvBuf = VbglR0PhysHeapAlloc(cbToWrite);
1486	GCPhys = pvBuf ? VbglR0PhysHeapGetPhysAddr(pvBuf) : NIL_RTGCPHYS;
1487	}
1488	else
1489	pvBuf = vboxSfOs2AllocBigBuffer(&GCPhys);
1490	if (pvBuf)
1491	{
1492	APIRET rc = KernCopyIn(pvBuf, pvData, cbToWrite);
1493	if (rc == NO_ERROR)
1494	{
1495	int vrc = VbglR0SfHostReqWriteContig(pFolder->idHostRoot, pReq, pSfFsd->hHostFile,
1496	offWrite, cbToWrite, pvBuf, GCPhys);
1497	if (RT_SUCCESS(vrc))
1498	{
1499	cbActual = pReq->Parms.cb32Write.u.value32;
1500	AssertStmt(cbActual <= cbToWrite, cbActual = cbToWrite);
1501	*pcb = vboxSfOs2WriteFinalize(pSfFsi, offWrite, cbActual);
1502	LogFlow(("FS32_WRITE: returns; cbActual=%#x sfi_positionl=%RI64 [bounced]\n", cbActual, pSfFsi->sfi_positionl));
1503	}
1504	else
1505	{
1506	Log(("FS32_WRITE: VbglR0SfHostReqWriteEmbedded(off=%#RU64,cb=%#x) -> %Rrc [bounced]\n", offWrite, cbToWrite, vrc));
1507	rc = ERROR_BAD_NET_RESP;
1508	}
1509	}
1510
1511	if (cbToWrite <= _16K)
1512	VbglR0PhysHeapFree(pvBuf);
1513	else
1514	vboxSfOs2FreeBigBuffer(pvBuf);
1515	VbglR0PhysHeapFree(pReq);
1516	return rc;
1517	}
1518	}
1519
1520	/*
1521	* We couldn't use a bounce buffer for it, so lock the buffer pages.
1522	*/
1523	KernVMLock_t Lock;
1524	ULONG cPagesRet;
1525	AssertCompile(sizeof(KernPageList_t) == sizeof(pReq->PgLst.aPages[0]));
1526	APIRET rc = KernVMLock(VMDHL_LONG, (void )pvData, cbToWrite, &Lock, (KernPageList_t )&pReq->PgLst.aPages[0], &cPagesRet);
1527	if (rc == NO_ERROR)
1528	{
1529	pReq->PgLst.offFirstPage = (uint16_t)(uintptr_t)pvData & (uint16_t)PAGE_OFFSET_MASK;
1530	cPages = (cbToWrite + ((uint16_t)(uintptr_t)pvData & (uint16_t)PAGE_OFFSET_MASK) + PAGE_SIZE - 1) >> PAGE_SHIFT;
1531	vboxSfOs2ConvertPageList((KernPageList_t volatile *)&pReq->PgLst.aPages[0], &pReq->PgLst.aPages[0], cPagesRet, cPages);
1532
1533	int vrc = VbglR0SfHostReqWritePgLst(pFolder->idHostRoot, pReq, pSfFsd->hHostFile, offWrite, cbToWrite, cPages);
1534	if (RT_SUCCESS(vrc))
1535	{
1536	cbActual = pReq->Parms.cb32Write.u.value32;
1537	AssertStmt(cbActual <= cbToWrite, cbActual = cbToWrite);
1538	*pcb = vboxSfOs2WriteFinalize(pSfFsi, offWrite, cbActual);
1539	LogFlow(("FS32_WRITE: returns; cbActual=%#x sfi_positionl=%RI64 [locked]\n", cbActual, pSfFsi->sfi_positionl));
1540	}
1541	else
1542	{
1543	Log(("FS32_WRITE: VbglR0SfHostReqWriteEmbedded(off=%#RU64,cb=%#x) -> %Rrc [locked]\n", offWrite, cbToWrite, vrc));
1544	rc = ERROR_BAD_NET_RESP;
1545	}
1546
1547	KernVMUnlock(&Lock);
1548	}
1549	else
1550	Log(("FS32_WRITE: KernVMLock(,%p,%#x,) failed -> %u\n", pvData, cbToWrite, rc));
1551	VbglR0PhysHeapFree(pReq);
1552	RT_NOREF_PV(fIoFlags);
1553	return rc;
1554	}
1555
1556
1557	extern "C" APIRET APIENTRY
1558	FS32_READFILEATCACHE(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, ULONG fIoFlags, LONGLONG off, ULONG pcb, KernCacheList_t **ppCacheList)
1559	{
1560	/*
1561	* Validate input.
1562	*/
1563	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1564	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1565	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1566	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1567	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1568	Assert(pFolder->cOpenFiles > 0);
1569	RT_NOREF(pFolder);
1570
1571	/* I think this is used for sendfile(). */
1572
1573	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(fIoFlags); NOREF(off); NOREF(pcb); NOREF(ppCacheList);
1574	return ERROR_NOT_SUPPORTED;
1575	}
1576
1577
1578	extern "C" APIRET APIENTRY
1579	FS32_RETURNFILECACHE(KernCacheList_t *pCacheList)
1580	{
1581	NOREF(pCacheList);
1582	return ERROR_NOT_SUPPORTED;
1583	}
1584
1585
1586	/* oddments */
1587
1588	DECLASM(APIRET)
1589	FS32_CANCELLOCKREQUESTL(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, struct filelockl *pLockRange)
1590	{
1591	/*
1592	* Validate input.
1593	*/
1594	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1595	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1596	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1597	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1598	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1599	Assert(pFolder->cOpenFiles > 0);
1600	RT_NOREF(pFolder);
1601
1602	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(pLockRange);
1603	return ERROR_NOT_SUPPORTED;
1604	}
1605
1606
1607	DECLASM(APIRET)
1608	FS32_CANCELLOCKREQUEST(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, struct filelock *pLockRange)
1609	{
1610	/*
1611	* Validate input.
1612	*/
1613	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1614	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1615	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1616	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1617	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1618	Assert(pFolder->cOpenFiles > 0);
1619	RT_NOREF(pFolder);
1620
1621	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(pLockRange);
1622	return ERROR_NOT_SUPPORTED;
1623	}
1624
1625
1626	DECLASM(APIRET)
1627	FS32_FILELOCKSL(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, struct filelockl *pUnLockRange,
1628	struct filelockl *pLockRange, ULONG cMsTimeout, ULONG fFlags)
1629	{
1630	/*
1631	* Validate input.
1632	*/
1633	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1634	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1635	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1636	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1637	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1638	Assert(pFolder->cOpenFiles > 0);
1639	RT_NOREF(pFolder);
1640
1641	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(pUnLockRange); NOREF(pLockRange); NOREF(cMsTimeout); NOREF(fFlags);
1642	return ERROR_NOT_SUPPORTED;
1643	}
1644
1645
1646	DECLASM(APIRET)
1647	FS32_FILELOCKS(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, struct filelock *pUnLockRange,
1648	struct filelock *pLockRange, ULONG cMsTimeout, ULONG fFlags)
1649	{
1650	/*
1651	* Validate input.
1652	*/
1653	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1654	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1655	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1656	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1657	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1658	Assert(pFolder->cOpenFiles > 0);
1659	RT_NOREF(pFolder);
1660
1661	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(pUnLockRange); NOREF(pLockRange); NOREF(cMsTimeout); NOREF(fFlags);
1662	return ERROR_NOT_SUPPORTED;
1663	}
1664
1665
1666	DECLASM(APIRET)
1667	FS32_IOCTL(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, USHORT uCategory, USHORT uFunction,
1668	PVOID pvParm, USHORT cbParm, PUSHORT pcbParmIO,
1669	PVOID pvData, USHORT cbData, PUSHORT pcbDataIO)
1670	{
1671	/*
1672	* Validate input.
1673	*/
1674	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1675	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1676	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1677	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1678	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1679	Assert(pFolder->cOpenFiles > 0);
1680	RT_NOREF(pFolder);
1681
1682	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(uCategory); NOREF(uFunction); NOREF(pvParm); NOREF(cbParm); NOREF(pcbParmIO);
1683	NOREF(pvData); NOREF(cbData); NOREF(pcbDataIO);
1684	return ERROR_NOT_SUPPORTED;
1685	}
1686
1687
1688	DECLASM(APIRET)
1689	FS32_FILEIO(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, PBYTE pbCmdList, USHORT cbCmdList,
1690	PUSHORT poffError, USHORT fIoFlag)
1691	{
1692	/*
1693	* Validate input.
1694	*/
1695	AssertReturn(pSfFsd->u32Magic == VBOXSFSYFI_MAGIC, ERROR_SYS_INTERNAL);
1696	AssertReturn(pSfFsd->pSelf == pSfFsd, ERROR_SYS_INTERNAL);
1697	PVBOXSFFOLDER pFolder = pSfFsd->pFolder;
1698	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
1699	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
1700	Assert(pFolder->cOpenFiles > 0);
1701	RT_NOREF(pFolder);
1702
1703	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(pbCmdList); NOREF(cbCmdList); NOREF(poffError); NOREF(fIoFlag);
1704	return ERROR_NOT_SUPPORTED;
1705	}
1706
1707
1708	DECLASM(APIRET)
1709	FS32_NMPIPE(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, USHORT uOpType, union npoper *pOpRec,
1710	PBYTE pbData, PCSZ pszName)
1711	{
1712	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(uOpType); NOREF(pOpRec); NOREF(pbData); NOREF(pszName);
1713	return ERROR_NOT_SUPPORTED;
1714	}
1715
1716
1717	DECLASM(APIRET)
1718	FS32_OPENPAGEFILE(PULONG pfFlags, PULONG pcMaxReq, PCSZ pszName, PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd,
1719	USHORT fOpenMode, USHORT fOpenFlags, USHORT fAttr, ULONG uReserved)
1720	{
1721	NOREF(pfFlags); NOREF(pcMaxReq); NOREF(pszName); NOREF(pSfFsi); NOREF(pSfFsd); NOREF(fOpenMode); NOREF(fOpenFlags);
1722	NOREF(fAttr); NOREF(uReserved);
1723	return ERROR_NOT_SUPPORTED;
1724	}
1725
1726
1727	DECLASM(APIRET)
1728	FS32_SETSWAP(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd)
1729	{
1730	NOREF(pSfFsi); NOREF(pSfFsd);
1731	return ERROR_NOT_SUPPORTED;
1732	}
1733
1734
1735	DECLASM(APIRET)
1736	FS32_ALLOCATEPAGESPACE(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, ULONG cb, USHORT cbWantContig)
1737	{
1738	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(cb); NOREF(cbWantContig);
1739	return ERROR_NOT_SUPPORTED;
1740	}
1741
1742
1743	DECLASM(APIRET)
1744	FS32_DOPAGEIO(PSFFSI pSfFsi, PVBOXSFSYFI pSfFsd, struct PageCmdHeader *pList)
1745	{
1746	NOREF(pSfFsi); NOREF(pSfFsd); NOREF(pList);
1747	return ERROR_NOT_SUPPORTED;
1748	}
1749

Note: See TracBrowser for help on using the repository browser.

Context Navigation

source: vbox/trunk/src/VBox/Additions/os2/VBoxSF/VBoxSFFile.cpp

Download in other formats: