VBoxSFFind.cpp@ 77661

最後變更在這個檔案從77661是 77640,由 vboxsync 提交於 6 年前
os2/vboxsf: KernStrToUcs and (probably also) KernStrFromUcs trashes ES in some cases (probably when they load a translation table, as it doesn't happen when JFS is actively used), so they need ES preserving wrappers to be safe to use. ticketref:18376 ticketref:18379
屬性 svn:eol-style 設為 `native` 屬性 svn:keywords 設為 `Id Revision`
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1	/** $Id: VBoxSFFind.cpp 77640 2019-03-10 21:13:03Z vboxsync $ */
2	/** @file
3	* VBoxSF - OS/2 Shared Folders, Find File IFS EPs.
4	*/
5
6	/*
7	* Copyright (c) 2007-2018 knut st. osmundsen <[email protected]>
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/mem.h>
42	#include <iprt/path.h>
43	#include <iprt/err.h>
44
45
46
47	/**
48	* Checks if the given name is 8-dot-3 compatible.
49	*
50	* @returns true if compatible, false if not.
51	* @param pwszName The name to inspect (UTF-16).
52	* @param cwcName The length of the name.
53	* @param pszTmp Buffer for test conversions.
54	* @param cbTmp The size of the buffer.
55	*/
56	static bool vboxSfOs2IsUtf16Name8dot3(PRTUTF16 pwszName, size_t cwcName, char *pszTmp, size_t cbTmp)
57	{
58	/* Reject names that must be too long. */
59	if (cwcName > 8 + 1 + 3)
60	return false;
61
62	/* First char cannot be a dot, nor can it be an empty string. */
63	if (pwszName == '.' \|\| !pwszName)
64	return false;
65
66	/*
67	* To basic checks on code point level before doing full conversion.
68	*/
69	for (unsigned off = 0; ; off++)
70	{
71	RTUTF16 wc = pwszName[off];
72	if (wc == '.')
73	{
74	unsigned const offMax = off + 3;
75	for (++off;; off++)
76	{
77	wc = pwszName[off];
78	if (!wc)
79	break;
80	if (wc == '.')
81	return false;
82	if (off >= offMax)
83	return false;
84	}
85	break;
86	}
87	if (!wc)
88	break;
89	if (off >= 8)
90	return false;
91	}
92
93	/*
94	* Conver to the native code page.
95	*/
96	APIRET rc = SafeKernStrFromUcs(NULL, pszTmp, pwszName, cbTmp, cwcName);
97	if (rc != NO_ERROR)
98	{
99	LogRel(("vboxSfOs2IsUtf8Name8dot3: SafeKernStrFromUcs failed: %d\n", rc));
100	return false;
101	}
102
103	/*
104	* Redo the check.
105	* Note! This could be bogus if a DBCS leadin sequence collides with '.'.
106	*/
107	for (unsigned cch = 0; ; cch++)
108	{
109	char ch = *pszTmp++;
110	if (ch == '.')
111	break;
112	if (ch == '\0')
113	return true;
114	if (cch >= 8)
115	return false;
116	}
117	for (unsigned cch = 0; ; cch++)
118	{
119	char ch = *pszTmp++;
120	if (ch == '\0')
121	return true;
122	if (ch != '.')
123	return false;
124	if (cch >= 3)
125	return false;
126	}
127	}
128
129
130	/**
131	* @returns Updated pbDst on success, NULL on failure.
132	*/
133	static uint8_t vboxSfOs2CopyUtf16Name(uint8_t pbDst, PRTUTF16 pwszSrc, size_t cwcSrc)
134	{
135	char pszDst = (char )pbDst + 1;
136	APIRET rc = SafeKernStrFromUcs(NULL, pszDst, pwszSrc, CCHMAXPATHCOMP, cwcSrc);
137	if (rc == NO_ERROR)
138	{
139	size_t cchDst = strlen(pszDst);
140	*pbDst++ = (uint8_t)cchDst;
141	pbDst += cchDst;
142	*pbDst++ = '\0';
143	return pbDst;
144	}
145	LogRel(("vboxSfOs2CopyUtf8Name: SafeKernStrFromUcs failed: %d\n", rc));
146	return NULL;
147	}
148
149
150	/**
151	* @returns Updated pbDst on success, NULL on failure.
152	*/
153	static uint8_t vboxSfOs2CopyUtf16NameAndUpperCase(uint8_t pbDst, PRTUTF16 pwszSrc, size_t cwcSrc)
154	{
155	char pszDst = (char )(pbDst + 1);
156	APIRET rc = SafeKernStrFromUcs(NULL, pszDst, RTUtf16ToUpper(pwszSrc), CCHMAXPATHCOMP, cwcSrc);
157	if (rc == NO_ERROR)
158	{
159	size_t cchDst = strlen(pszDst);
160	*pbDst++ = (uint8_t)cchDst;
161	pbDst += cchDst;
162	*pbDst++ = '\0';
163	return pbDst;
164	}
165	LogRel(("vboxSfOs2CopyUtf16NameAndUpperCase: SafeKernStrFromUcs failed: %#x\n", rc));
166	return NULL;
167	}
168
169
170
171	/**
172	* Worker for FS32_FINDFIRST, FS32_FINDNEXT and FS32_FINDFROMNAME.
173	*
174	* @returns OS/2 status code.
175	* @param pFolder The folder we're working on.
176	* @param pFsFsd The search handle data.
177	* @param pDataBuf The search data buffer (some handle data there too).
178	* @param uLevel The info level to return.
179	* @param fFlags Position flag.
180	* @param pbData The output buffer.
181	* @param cbData The size of the output buffer.
182	* @param cMaxMatches The maximum number of matches to return.
183	* @param pcMatches Where to set the number of returned matches.
184	*/
185	static APIRET vboxSfOs2ReadDirEntries(PVBOXSFFOLDER pFolder, PVBOXSFFS pFsFsd, PVBOXSFFSBUF pDataBuf, ULONG uLevel, ULONG fFlags,
186	PBYTE pbData, ULONG cbData, USHORT cMaxMatches, PUSHORT pcMatches)
187	{
188	APIRET rc = NO_ERROR;
189
190	/*
191	* If we're doing EAs, the buffer starts with an EAOP structure.
192	*/
193	EAOP EaOp;
194	PEAOP pEaOpUser = NULL; /* Shut up gcc */
195	switch (uLevel)
196	{
197	case FI_LVL_EAS_FROM_LIST:
198	case FI_LVL_EAS_FROM_LIST_64:
199	case FI_LVL_EAS_FULL:
200	case FI_LVL_EAS_FULL_5:
201	case FI_LVL_EAS_FULL_8:
202	if (cbData >= sizeof(EaOp))
203	{
204	rc = KernCopyIn(&EaOp, pbData, sizeof(EaOp));
205	if (rc == NO_ERROR)
206	{
207	EaOp.fpGEAList = (PGEALIST)KernSelToFlat((uintptr_t)EaOp.fpGEAList);
208	EaOp.fpFEAList = NULL;
209
210	pEaOpUser = (PEAOP)pbData;
211	pbData += sizeof(*pEaOpUser);
212	cbData -= sizeof(*pEaOpUser);
213	break;
214	}
215	}
216	else
217	rc = ERROR_BUFFER_OVERFLOW;
218	Log(("vboxSfOs2ReadDirEntries: Failed to read EAOP: %u\n", rc));
219	return rc;
220	}
221
222	/*
223	* Do the reading.
224	*/
225	USHORT cMatches;
226	for (cMatches = 0; cMatches < cMaxMatches;)
227	{
228	/*
229	* Do we need to fetch more directory entries?
230	*/
231	PSHFLDIRINFO pEntry = pDataBuf->pEntry;
232	if ( pDataBuf->cEntriesLeft == 0
233	\|\| pEntry == NULL /* paranoia */)
234	{
235	pDataBuf->pEntry = pEntry = pDataBuf->pBuf;
236	int vrc = VbglR0SfHostReqListDir(pFolder->idHostRoot, &pDataBuf->Req, pFsFsd->hHostDir, pDataBuf->pFilter,
237	/cMaxMatches == 1 ? SHFL_LIST_RETURN_ONE :/ 0, pDataBuf->pBuf, pDataBuf->cbBuf);
238	if (RT_SUCCESS(vrc))
239	{
240	pDataBuf->cEntriesLeft = pDataBuf->Req.Parms.c32Entries.u.value32;
241	pDataBuf->cbValid = pDataBuf->Req.Parms.cb32Buffer.u.value32;
242	//Log(("%.*Rhxd\n", pDataBuf->cbValid, pEntry));
243	AssertReturn(pDataBuf->cbValid >= RT_UOFFSETOF(SHFLDIRINFO, name.String), ERROR_SYS_INTERNAL);
244	AssertReturn(pDataBuf->cbValid >= RT_UOFFSETOF(SHFLDIRINFO, name.String) + pEntry->name.u16Size, ERROR_SYS_INTERNAL);
245	Log4(("vboxSfOs2ReadDirEntries: VbglR0SfHostReqListDir returned %#x matches in %#x bytes\n", pDataBuf->cEntriesLeft, pDataBuf->cbValid));
246	}
247	else
248	{
249	if (vrc == VERR_NO_MORE_FILES)
250	Log4(("vboxSfOs2ReadDirEntries: VbglR0SfHostReqListDir returned VERR_NO_MORE_FILES (%d,%d)\n",
251	pDataBuf->Req.Parms.c32Entries.u.value32, pDataBuf->Req.Parms.cb32Buffer.u.value32));
252	else
253	Log(("vboxSfOs2ReadDirEntries: VbglR0SfHostReqListDir failed %Rrc (%d,%d)\n", vrc,
254	pDataBuf->Req.Parms.c32Entries.u.value32, pDataBuf->Req.Parms.cb32Buffer.u.value32));
255	pDataBuf->pEntry = NULL;
256	pDataBuf->cEntriesLeft = 0;
257	pDataBuf->cbValid = 0;
258	if (cMatches == 0)
259	{
260	if (vrc == VERR_NO_MORE_FILES)
261	rc = ERROR_NO_MORE_FILES;
262	else
263	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_GEN_FAILURE);
264	}
265	break;
266	}
267	}
268
269	/*
270	* Do matching and stuff the return buffer.
271	*/
272	if ( !((pEntry->Info.Attr.fMode >> RTFS_DOS_SHIFT) & pDataBuf->fExcludedAttribs)
273	&& ((pEntry->Info.Attr.fMode >> RTFS_DOS_SHIFT) & pDataBuf->fMustHaveAttribs) == pDataBuf->fMustHaveAttribs
274	&& ( pDataBuf->fLongFilenames
275	\|\| pEntry->cucShortName
276	\|\| vboxSfOs2IsUtf16Name8dot3(pEntry->name.String.utf16, pEntry->name.u16Length / sizeof(RTUTF16),
277	(char *)pDataBuf->abStaging, sizeof(pDataBuf->abStaging))))
278	{
279	/*
280	* We stages all but FEAs (level 3, 4, 13 and 14).
281	*/
282	PBYTE const pbUserBufStart = pbData; /* In case we need to skip a bad name. */
283	uint8_t *pbToCopy = pDataBuf->abStaging;
284	uint8_t *pbDst = pbToCopy;
285
286	/* Position (originally used for FS32_FINDFROMNAME 'position', but since reused
287	for FILEFINDBUF3::oNextEntryOffset and FILEFINDBUF4::oNextEntryOffset): */
288	if (fFlags & FF_GETPOS)
289	{
290	(uint32_t )pbDst = pFsFsd->offLastFile + 1;
291	pbDst += sizeof(uint32_t);
292	}
293
294	/* Dates: Creation, Access, Write */
295	vboxSfOs2DateTimeFromTimeSpec((FDATE )pbDst, (FTIME )(pbDst + 2), pEntry->Info.BirthTime, pDataBuf->cMinLocalTimeDelta);
296	pbDst += sizeof(FDATE) + sizeof(FTIME);
297	vboxSfOs2DateTimeFromTimeSpec((FDATE )pbDst, (FTIME )(pbDst + 2), pEntry->Info.AccessTime, pDataBuf->cMinLocalTimeDelta);
298	pbDst += sizeof(FDATE) + sizeof(FTIME);
299	vboxSfOs2DateTimeFromTimeSpec((FDATE )pbDst, (FTIME )(pbDst + 2), pEntry->Info.ModificationTime, pDataBuf->cMinLocalTimeDelta);
300	pbDst += sizeof(FDATE) + sizeof(FTIME);
301
302	/* File size, allocation size, attributes: */
303	if (uLevel >= FI_LVL_STANDARD_64)
304	{
305	(uint64_t )pbDst = pEntry->Info.cbObject;
306	pbDst += sizeof(uint64_t);
307	(uint64_t )pbDst = pEntry->Info.cbAllocated;
308	pbDst += sizeof(uint64_t);
309	(uint32_t )pbDst = (pEntry->Info.Attr.fMode & RTFS_DOS_MASK_OS2) >> RTFS_DOS_SHIFT;
310	pbDst += sizeof(uint32_t);
311	}
312	else
313	{
314	(uint32_t )pbDst = (uint32_t)RT_MIN(pEntry->Info.cbObject, _2G - 1);
315	pbDst += sizeof(uint32_t);
316	(uint32_t )pbDst = (uint32_t)RT_MIN(pEntry->Info.cbAllocated, _2G - 1);
317	pbDst += sizeof(uint32_t);
318	(uint16_t )pbDst = (uint16_t)((pEntry->Info.Attr.fMode & RTFS_DOS_MASK_OS2) >> RTFS_DOS_SHIFT);
319	pbDst += sizeof(uint16_t); /* (Curious: Who is expanding this to 32-bits for 32-bit callers? */
320	}
321
322	/* Extra EA related fields: */
323	if ( uLevel == FI_LVL_STANDARD
324	\|\| uLevel == FI_LVL_STANDARD_64)
325	{ /* nothing */ }
326	else if ( uLevel == FI_LVL_STANDARD_EASIZE
327	\|\| uLevel == FI_LVL_STANDARD_EASIZE_64)
328	{
329	/* EA size: */
330	(uint32_t )pbDst = 0;
331	pbDst += sizeof(uint32_t);
332	}
333	else
334	{
335	/* Empty FEALIST - flush pending data first: */
336	uint32_t cbToCopy = pbDst - pbToCopy;
337	if (cbToCopy < cbData)
338	{
339	rc = KernCopyOut(pbData, pbToCopy, cbToCopy);
340	if (rc == NO_ERROR)
341	{
342	pbData += cbToCopy;
343	cbData -= cbToCopy;
344	pbDst = pbToCopy;
345
346	uint32_t cbWritten = 0;
347	EaOp.fpFEAList = (PFEALIST)pbData;
348	rc = vboxSfOs2MakeEmptyEaListEx(&EaOp, uLevel, &cbWritten, &pEaOpUser->oError);
349	if (rc == NO_ERROR)
350	{
351	cbData -= cbWritten;
352	pbData += cbWritten;
353	}
354	}
355	}
356	else
357	rc = ERROR_BUFFER_OVERFLOW;
358	if (rc != NO_ERROR)
359	break;
360	}
361
362	/* The length prefixed filename. */
363	if (pDataBuf->fLongFilenames)
364	pbDst = vboxSfOs2CopyUtf16Name(pbDst, pEntry->name.String.utf16, pEntry->name.u16Length / sizeof(RTUTF16));
365	else if (pEntry->cucShortName == 0)
366	pbDst = vboxSfOs2CopyUtf16NameAndUpperCase(pbDst, pEntry->name.String.utf16, pEntry->name.u16Length / sizeof(RTUTF16));
367	else
368	pbDst = vboxSfOs2CopyUtf16NameAndUpperCase(pbDst, pEntry->uszShortName, pEntry->cucShortName);
369	if (pbDst)
370	{
371	/*
372	* Copy out the staged data.
373	*/
374	uint32_t cbToCopy = pbDst - pbToCopy;
375	if (cbToCopy <= cbData)
376	{
377	rc = KernCopyOut(pbData, pbToCopy, cbToCopy);
378	if (rc == NO_ERROR)
379	{
380	Log4(("vboxSfOs2ReadDirEntries: match #%u LB %#x: '%s'\n", cMatches, cbToCopy, pEntry->name.String.utf8));
381	Log4(("%.*Rhxd\n", cbToCopy, pbToCopy));
382
383	pbData += cbToCopy;
384	cbData -= cbToCopy;
385	pbDst = pbToCopy;
386
387	cMatches++;
388	pFsFsd->offLastFile++;
389	}
390	else
391	break;
392	}
393	else
394	{
395	rc = ERROR_BUFFER_OVERFLOW;
396	break;
397	}
398	}
399	else
400	{
401	/* Name conversion issue, just skip the entry. */
402	Log3(("vboxSfOs2ReadDirEntries: Skipping '%s' due to name conversion issue.\n", pEntry->name.String.utf8));
403	cbData -= pbUserBufStart - pbData;
404	pbData = pbUserBufStart;
405	}
406	}
407	else
408	Log3(("vboxSfOs2ReadDirEntries: fMode=%#x filter out by %#x/%#x; '%s'\n",
409	pEntry->Info.Attr.fMode, pDataBuf->fMustHaveAttribs, pDataBuf->fExcludedAttribs, pEntry->name.String.utf8));
410
411	/*
412	* Advance to the next directory entry from the host.
413	*/
414	if (pDataBuf->cEntriesLeft-- > 1)
415	{
416	pDataBuf->pEntry = pEntry = (PSHFLDIRINFO)&pEntry->name.String.utf8[pEntry->name.u16Size];
417	uintptr_t offEntry = (uintptr_t)pEntry - (uintptr_t)pDataBuf->pBuf;
418	AssertMsgReturn(offEntry + RT_UOFFSETOF(SHFLDIRINFO, name.String) <= pDataBuf->cbValid,
419	("offEntry=%#x cbValid=%#x\n", offEntry, pDataBuf->cbValid), ERROR_SYS_INTERNAL);
420	//Log(("next entry: %p / %#x: u16Size=%#x => size: %#x\n", pEntry, offEntry, RT_UOFFSETOF(SHFLDIRINFO, name.String) + pEntry->name.u16Size));
421	AssertMsgReturn(offEntry + RT_UOFFSETOF(SHFLDIRINFO, name.String) + pEntry->name.u16Size <= pDataBuf->cbValid,
422	("offEntry=%#x + offName=%#x + cbName=%#x => %#x; cbValid=%#x\n",
423	offEntry, RT_UOFFSETOF(SHFLDIRINFO, name.String), pEntry->name.u16Size,
424	offEntry + RT_UOFFSETOF(SHFLDIRINFO, name.String) + pEntry->name.u16Size, pDataBuf->cbValid),
425	ERROR_SYS_INTERNAL);
426	//Log(("%.*Rhxd\n", RT_UOFFSETOF(SHFLDIRINFO, name.String) + pEntry->name.u16Size, pEntry));
427	}
428	else
429	pDataBuf->pEntry = pEntry = NULL;
430	}
431
432	*pcMatches = cMatches;
433
434	/* Ignore buffer overflows if we've got matches to return. */
435	if (rc == ERROR_BUFFER_OVERFLOW && cMatches > 0)
436	rc = NO_ERROR;
437	return rc;
438	}
439
440
441	DECLASM(APIRET)
442	FS32_FINDFIRST(PCDFSI pCdFsi, PVBOXSFCD pCdFsd, PCSZ pszPath, LONG offCurDirEnd, ULONG fAttribs,
443	PFSFSI pFsFsi, PVBOXSFFS pFsFsd, PBYTE pbData, ULONG cbData, PUSHORT pcMatches, ULONG uLevel, ULONG fFlags)
444	{
445	LogFlow(("FS32_FINDFIRST: pCdFsi=%p pCdFsd=%p pszPath=%p:{%s} offCurDirEnd=%d fAttribs=%#x pFsFsi=%p pFsFsd=%p pbData=%p cbData=%#x pcMatches=%p:{%#x} uLevel=%#x fFlags=%#x\n",
446	pCdFsi, pCdFsd, pszPath, pszPath, offCurDirEnd, fAttribs, pFsFsi, pFsFsd, pbData, cbData, pcMatches, *pcMatches, uLevel, fFlags));
447	USHORT const cMaxMatches = *pcMatches;
448	*pcMatches = 0;
449
450	/*
451	* Input validation.
452	*/
453	switch (uLevel)
454	{
455	case FI_LVL_STANDARD:
456	case FI_LVL_STANDARD_64:
457	case FI_LVL_STANDARD_EASIZE:
458	case FI_LVL_STANDARD_EASIZE_64:
459	break;
460
461	case FI_LVL_EAS_FROM_LIST:
462	case FI_LVL_EAS_FROM_LIST_64:
463	if (cbData < sizeof(EAOP))
464	{
465	Log(("FS32_FINDFIRST: Buffer smaller than EAOP: %#x\n", cbData));
466	return ERROR_BUFFER_OVERFLOW;
467	}
468	break;
469
470	default:
471	LogRel(("FS32_FINDFIRST: Unsupported info level %u!\n", uLevel));
472	return ERROR_INVALID_LEVEL;
473	}
474
475	/*
476	* Resolve path to a folder and folder relative path.
477	*/
478	RT_NOREF(pCdFsi);
479	PVBOXSFFOLDER pFolder;
480	VBOXSFCREATEREQ *pReq;
481	APIRET rc = vboxSfOs2ResolvePathEx(pszPath, pCdFsd, offCurDirEnd, RT_UOFFSETOF(VBOXSFCREATEREQ, StrPath),
482	&pFolder, (void **)&pReq);
483	LogFlow(("FS32_FINDFIRST: vboxSfOs2ResolvePathEx: -> %u pReq=%p\n", rc, pReq));
484	if (rc == NO_ERROR)
485	{
486	PSHFLSTRING pStrFolderPath = &pReq->StrPath;
487
488	/*
489	* Look for a wildcard filter at the end of the path, saving it all for
490	* later in NT filter speak if present.
491	*/
492	PSHFLSTRING pFilter = NULL;
493	PRTUTF16 pwszFilter = RTPathFilenameUtf16(pStrFolderPath->String.utf16);
494	if ( pwszFilter
495	&& ( RTUtf16Chr(pwszFilter, '*') != NULL
496	\|\| RTUtf16Chr(pwszFilter, '?') != NULL))
497	{
498	if (RTUtf16CmpAscii(pwszFilter, ".") == 0)
499	{
500	/* All files, no filtering needed. Just drop the filter expression from the directory path. */
501	*pwszFilter = '\0';
502	pStrFolderPath->u16Length = (uint16_t)((uint8_t *)pwszFilter - &pStrFolderPath->String.utf8[0]);
503	}
504	else
505	{
506	/* Duplicate the whole path. */
507	pFilter = vboxSfOs2StrDup(pStrFolderPath);
508	if (pFilter)
509	{
510	/* Drop filter from directory path. */
511	*pwszFilter = '\0';
512	pStrFolderPath->u16Length = (uint16_t)((uint8_t *)pwszFilter - &pStrFolderPath->String.utf8[0]);
513
514	/* Convert filter part of the copy to NT speak. */
515	pwszFilter = (PRTUTF16)&pFilter->String.utf8[(uint8_t *)pwszFilter - &pStrFolderPath->String.utf8[0]];
516	for (;;)
517	{
518	RTUTF16 wc = *pwszFilter;
519	if (wc == '?')
520	pwszFilter = '>'; / The DOS question mark: Matches one char, but dots and end-of-name eats them. */
521	else if (wc == '.')
522	{
523	RTUTF16 wc2 = pwszFilter[1];
524	if (wc2 == '*' \|\| wc2 == '?')
525	pwszFilter = '"'; / The DOS dot: Matches a dot or end-of-name. */
526	}
527	else if (wc == '*')
528	{
529	if (pwszFilter[1] == '.')
530	pwszFilter = '<'; / The DOS star: Matches zero or more chars except the DOS dot.*/
531	}
532	else if (wc == '\0')
533	break;
534	pwszFilter++;
535	}
536	}
537	else
538	rc = ERROR_NOT_ENOUGH_MEMORY;
539	}
540	}
541	/*
542	* When no wildcard is specified, we're supposed to return a single entry
543	* with the name in the final component. Exception is the root, where we
544	* always list the whole thing.
545	*
546	* Not sure if we'll ever see a trailing slash here (pszFilter == NULL),
547	* but if we do we should accept it only for the root.
548	*/
549	else if (pwszFilter)
550	{
551	/* Copy the whole path for filtering. */
552	pFilter = vboxSfOs2StrDup(pStrFolderPath);
553	if (pFilter)
554	{
555	/* Strip the filename off the one we're opening. */
556	pStrFolderPath->u16Length = (uint16_t)((uintptr_t)pwszFilter - (uintptr_t)pStrFolderPath->String.utf16);
557	pStrFolderPath->u16Size = pStrFolderPath->u16Length + (uint16_t)sizeof(RTUTF16);
558	pStrFolderPath->String.utf16[pStrFolderPath->u16Length / sizeof(RTUTF16)] = '\0';
559	}
560	else
561	rc = ERROR_NOT_ENOUGH_MEMORY;
562	}
563	else if (!pwszFilter && pStrFolderPath->u16Length > 1)
564	{
565	LogFlow(("FS32_FINDFIRST: Trailing slash (%ls)\n", pStrFolderPath->String.utf16));
566	rc = ERROR_PATH_NOT_FOUND;
567	}
568	else
569	LogFlow(("FS32_FINDFIRST: Root dir (%ls)\n", pStrFolderPath->String.utf16));
570
571	/*
572	* Allocate data/request buffer and another buffer for receiving entries in.
573	*/
574	if (rc == NO_ERROR)
575	{
576	PVBOXSFFSBUF pDataBuf = (PVBOXSFFSBUF)VbglR0PhysHeapAlloc(sizeof(*pDataBuf));
577	if (pDataBuf)
578	{
579	#define MIN_BUF_SIZE ( RT_ALIGN_32(sizeof(SHFLDIRINFO) + CCHMAXPATHCOMP * sizeof(RTUTF16) + 64 /fudge/ + ALLOC_HDR_SIZE, 64) \
580	- ALLOC_HDR_SIZE)
581	RT_ZERO(*pDataBuf);
582	pDataBuf->cbBuf = cMaxMatches == 1 ? MIN_BUF_SIZE : _16K - ALLOC_HDR_SIZE;
583	pDataBuf->pBuf = (PSHFLDIRINFO)VbglR0PhysHeapAlloc(pDataBuf->cbBuf);
584	if (pDataBuf->pBuf)
585	{ /* likely */ }
586	else
587	{
588	pDataBuf->pBuf = (PSHFLDIRINFO)VbglR0PhysHeapAlloc(MIN_BUF_SIZE);
589	if (pDataBuf->pBuf)
590	pDataBuf->cbBuf = MIN_BUF_SIZE;
591	else
592	rc = ERROR_NOT_ENOUGH_MEMORY;
593	}
594	}
595	if (rc == NO_ERROR)
596	{
597	/*
598	* Now, try open the directory for reading.
599	*/
600	pReq->CreateParms.CreateFlags = SHFL_CF_DIRECTORY \| SHFL_CF_ACT_FAIL_IF_NEW \| SHFL_CF_ACT_OPEN_IF_EXISTS
601	\| SHFL_CF_ACCESS_READ \| SHFL_CF_ACCESS_ATTR_READ \| SHFL_CF_ACCESS_DENYNONE;
602
603	int vrc = VbglR0SfHostReqCreate(pFolder->idHostRoot, pReq);
604	LogFlow(("FS32_FINDFIRST: VbglR0SfHostReqCreate(%ls) -> %Rrc Result=%d fMode=%#x hHandle=%#RX64\n",
605	pStrFolderPath->String.utf16, vrc, pReq->CreateParms.Result, pReq->CreateParms.Info.Attr.fMode,
606	pReq->CreateParms.Handle));
607	if (RT_SUCCESS(vrc))
608	{
609	switch (pReq->CreateParms.Result)
610	{
611	case SHFL_FILE_EXISTS:
612	if (pReq->CreateParms.Handle != SHFL_HANDLE_NIL)
613	{
614	/*
615	* Initialize the structures.
616	*/
617	pFsFsd->hHostDir = pReq->CreateParms.Handle;
618	pFsFsd->u32Magic = VBOXSFFS_MAGIC;
619	pFsFsd->pFolder = pFolder;
620	pFsFsd->pBuf = pDataBuf;
621	pFsFsd->offLastFile = 0;
622	pDataBuf->u32Magic = VBOXSFFSBUF_MAGIC;
623	pDataBuf->cbValid = 0;
624	pDataBuf->cEntriesLeft = 0;
625	pDataBuf->pEntry = NULL;
626	pDataBuf->pFilter = pFilter;
627	pDataBuf->fMustHaveAttribs = (uint8_t)((fAttribs >> 8) & (RTFS_DOS_MASK_OS2 >> RTFS_DOS_SHIFT));
628	pDataBuf->fExcludedAttribs = (uint8_t)(~fAttribs
629	& ( (RTFS_DOS_MASK_OS2 & ~(RTFS_DOS_ARCHIVED \| RTFS_DOS_READONLY)
630	>> RTFS_DOS_SHIFT)));
631	pDataBuf->fLongFilenames = RT_BOOL(fAttribs & FF_ATTR_LONG_FILENAME);
632	pDataBuf->cMinLocalTimeDelta = vboxSfOs2GetLocalTimeDelta();
633
634	rc = vboxSfOs2ReadDirEntries(pFolder, pFsFsd, pDataBuf, uLevel, fFlags,
635	pbData, cbData, cMaxMatches ? cMaxMatches : UINT16_MAX, pcMatches);
636	if (rc == NO_ERROR)
637	{
638	uint32_t cRefs = ASMAtomicIncU32(&pFolder->cOpenSearches);
639	Assert(cRefs < _4K); RT_NOREF(cRefs);
640
641	/* We keep these on success: */
642	if (pFilter == pStrFolderPath)
643	pStrFolderPath = NULL;
644	pFilter = NULL;
645	pDataBuf = NULL;
646	pFolder = NULL;
647	}
648	else
649	{
650	AssertCompile(sizeof(VBOXSFCLOSEREQ) < sizeof(*pReq));
651	vrc = VbglR0SfHostReqClose(pFolder->idHostRoot, (VBOXSFCLOSEREQ *)pReq, pFsFsd->hHostDir);
652	AssertRC(vrc);
653	pFsFsd->u32Magic = ~VBOXSFFS_MAGIC;
654	pDataBuf->u32Magic = ~VBOXSFFSBUF_MAGIC;
655	pFsFsd->pFolder = NULL;
656	pFsFsd->hHostDir = NULL;
657	}
658	}
659	else
660	{
661	LogFlow(("FS32_FINDFIRST: VbglR0SfHostReqCreate returns NIL handle for '%ls'\n",
662	pStrFolderPath->String.utf16));
663	rc = ERROR_PATH_NOT_FOUND;
664	}
665	break;
666
667	case SHFL_PATH_NOT_FOUND:
668	rc = ERROR_PATH_NOT_FOUND;
669	break;
670
671	default:
672	case SHFL_FILE_NOT_FOUND:
673	rc = ERROR_FILE_NOT_FOUND;
674	break;
675	}
676	}
677	else
678	rc = vboxSfOs2ConvertStatusToOs2(vrc, ERROR_GEN_FAILURE);
679	}
680
681	if (pDataBuf)
682	{
683	VbglR0PhysHeapFree(pDataBuf->pBuf);
684	pDataBuf->pBuf = NULL;
685	VbglR0PhysHeapFree(pDataBuf);
686	}
687	}
688	vboxSfOs2StrFree(pFilter);
689	VbglR0PhysHeapFree(pReq);
690	vboxSfOs2ReleaseFolder(pFolder);
691	}
692
693	RT_NOREF_PV(pFsFsi);
694	LogFlow(("FS32_FINDFIRST: returns %u\n", rc));
695	return rc;
696	}
697
698
699	DECLASM(APIRET)
700	FS32_FINDFROMNAME(PFSFSI pFsFsi, PVBOXSFFS pFsFsd, PBYTE pbData, ULONG cbData, PUSHORT pcMatches,
701	ULONG uLevel, ULONG uPosition, PCSZ pszName, ULONG fFlags)
702	{
703	LogFlow(("FS32_FINDFROMNAME: pFsFsi=%p pFsFsd=%p pbData=%p cbData=%#x pcMatches=%p:{%#x} uLevel=%#x uPosition=%#x pszName=%p:{%s} fFlags=%#x\n",
704	pFsFsi, pFsFsd, pbData, cbData, pcMatches, *pcMatches, uLevel, uPosition, pszName, pszName, fFlags));
705
706	/*
707	* Input validation.
708	*/
709	USHORT const cMaxMatches = *pcMatches;
710	*pcMatches = 0;
711	AssertReturn(pFsFsd->u32Magic == VBOXSFFS_MAGIC, ERROR_SYS_INTERNAL);
712	PVBOXSFFOLDER pFolder = pFsFsd->pFolder;
713	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
714	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
715	Assert(pFolder->cOpenSearches > 0);
716	PVBOXSFFSBUF pDataBuf = pFsFsd->pBuf;
717	AssertReturn(pDataBuf, ERROR_SYS_INTERNAL);
718	Assert(pDataBuf->u32Magic == VBOXSFFSBUF_MAGIC);
719
720	switch (uLevel)
721	{
722	case FI_LVL_STANDARD:
723	case FI_LVL_STANDARD_64:
724	case FI_LVL_STANDARD_EASIZE:
725	case FI_LVL_STANDARD_EASIZE_64:
726	break;
727
728	case FI_LVL_EAS_FROM_LIST:
729	case FI_LVL_EAS_FROM_LIST_64:
730	Log(("FS32_FINDFIRST: FI_LVL_EAS_FROM_LIST[_64] -> ERROR_EAS_NOT_SUPPORTED\n"));
731	return ERROR_EAS_NOT_SUPPORTED;
732
733	default:
734	LogRel(("FS32_FINDFIRST: Unsupported info level %u!\n", uLevel));
735	return ERROR_INVALID_LEVEL;
736	}
737
738	/*
739	* Check if we're just continuing. This is usually the case.
740	*/
741	APIRET rc;
742	if (uPosition == pFsFsd->offLastFile)
743	rc = vboxSfOs2ReadDirEntries(pFolder, pFsFsd, pDataBuf, uLevel, fFlags, pbData, cbData,
744	cMaxMatches ? cMaxMatches : UINT16_MAX, pcMatches);
745	else
746	{
747	Log(("TODO: uPosition differs: %#x, expected %#x (%s)\n", uPosition, pFsFsd->offLastFile, pszName));
748	rc = vboxSfOs2ReadDirEntries(pFolder, pFsFsd, pDataBuf, uLevel, fFlags, pbData, cbData,
749	cMaxMatches ? cMaxMatches : UINT16_MAX, pcMatches);
750	}
751
752	RT_NOREF(pFsFsi, pszName);
753	LogFlow(("FS32_FINDFROMNAME: returns %u (pcMatches=%#x)\n", rc, pcMatches));
754	return rc;
755	}
756
757
758	DECLASM(APIRET)
759	FS32_FINDNEXT(PFSFSI pFsFsi, PVBOXSFFS pFsFsd, PBYTE pbData, ULONG cbData, PUSHORT pcMatches, ULONG uLevel, ULONG fFlags)
760	{
761	LogFlow(("FS32_FINDNEXT: pFsFsi=%p pFsFsd=%p pbData=%p cbData=%#x pcMatches=%p:{%#x} uLevel=%#x fFlags=%#x\n",
762	pFsFsi, pFsFsd, pbData, cbData, pcMatches, *pcMatches, uLevel, fFlags));
763
764	/*
765	* Input validation.
766	*/
767	USHORT const cMaxMatches = *pcMatches;
768	*pcMatches = 0;
769	AssertReturn(pFsFsd->u32Magic == VBOXSFFS_MAGIC, ERROR_SYS_INTERNAL);
770	PVBOXSFFOLDER pFolder = pFsFsd->pFolder;
771	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
772	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
773	Assert(pFolder->cOpenSearches > 0);
774	PVBOXSFFSBUF pDataBuf = pFsFsd->pBuf;
775	AssertReturn(pDataBuf, ERROR_SYS_INTERNAL);
776	Assert(pDataBuf->u32Magic == VBOXSFFSBUF_MAGIC);
777
778	switch (uLevel)
779	{
780	case FI_LVL_STANDARD:
781	case FI_LVL_STANDARD_64:
782	case FI_LVL_STANDARD_EASIZE:
783	case FI_LVL_STANDARD_EASIZE_64:
784	break;
785
786	case FI_LVL_EAS_FROM_LIST:
787	case FI_LVL_EAS_FROM_LIST_64:
788	Log(("FS32_FINDFIRST: FI_LVL_EAS_FROM_LIST[_64] -> ERROR_EAS_NOT_SUPPORTED\n"));
789	return ERROR_EAS_NOT_SUPPORTED;
790
791	default:
792	LogRel(("FS32_FINDFIRST: Unsupported info level %u!\n", uLevel));
793	return ERROR_INVALID_LEVEL;
794	}
795
796	/*
797	* Read more.
798	*/
799	APIRET rc = vboxSfOs2ReadDirEntries(pFolder, pFsFsd, pDataBuf, uLevel, fFlags, pbData, cbData,
800	cMaxMatches ? cMaxMatches : UINT16_MAX, pcMatches);
801
802	NOREF(pFsFsi);
803	LogFlow(("FS32_FINDNEXT: returns %u (pcMatches=%#x)\n", rc, pcMatches));
804	return rc;
805	}
806
807
808	DECLASM(APIRET)
809	FS32_FINDCLOSE(PFSFSI pFsFsi, PVBOXSFFS pFsFsd)
810	{
811	/*
812	* Input validation.
813	*/
814	AssertReturn(pFsFsd->u32Magic == VBOXSFFS_MAGIC, ERROR_SYS_INTERNAL);
815	PVBOXSFFOLDER pFolder = pFsFsd->pFolder;
816	AssertReturn(pFolder != NULL, ERROR_SYS_INTERNAL);
817	Assert(pFolder->u32Magic == VBOXSFFOLDER_MAGIC);
818	Assert(pFolder->cOpenSearches > 0);
819	PVBOXSFFSBUF pDataBuf = pFsFsd->pBuf;
820	AssertReturn(pDataBuf, ERROR_SYS_INTERNAL);
821	Assert(pDataBuf->u32Magic == VBOXSFFSBUF_MAGIC);
822
823	/*
824	* Close it.
825	*/
826	if (pFsFsd->hHostDir != SHFL_HANDLE_NIL)
827	{
828	int vrc = VbglR0SfHostReqCloseSimple(pFolder->idHostRoot, pFsFsd->hHostDir);
829	AssertRC(vrc);
830	}
831
832	pFsFsd->u32Magic = ~VBOXSFFS_MAGIC;
833	pFsFsd->hHostDir = SHFL_HANDLE_NIL;
834	pFsFsd->pFolder = NULL;
835	pFsFsd->pBuf = NULL;
836	vboxSfOs2StrFree(pDataBuf->pFilter);
837	pDataBuf->pFilter = NULL;
838	pDataBuf->u32Magic = ~VBOXSFFSBUF_MAGIC;
839	pDataBuf->cbBuf = 0;
840
841	VbglR0PhysHeapFree(pDataBuf->pBuf);
842	pDataBuf->pBuf = NULL;
843	VbglR0PhysHeapFree(pDataBuf);
844
845	uint32_t cRefs = ASMAtomicDecU32(&pFolder->cOpenSearches);
846	Assert(cRefs < _4K); RT_NOREF(cRefs);
847	vboxSfOs2ReleaseFolder(pFolder);
848
849	RT_NOREF(pFsFsi);
850	LogFlow(("FS32_FINDCLOSE: returns NO_ERROR\n"));
851	return NO_ERROR;
852	}
853
854
855
856
857
858	DECLASM(APIRET)
859	FS32_FINDNOTIFYFIRST(PCDFSI pCdFsi, PVBOXSFCD pCdFsd, PCSZ pszPath, LONG offCurDirEnd, ULONG fAttribs,
860	PUSHORT phHandle, PBYTE pbData, ULONG cbData, PUSHORT pcMatches,
861	ULONG uLevel, ULONG fFlags)
862	{
863	RT_NOREF(pCdFsi, pCdFsd, pszPath, offCurDirEnd, fAttribs, phHandle, pbData, cbData, pcMatches, uLevel, fFlags);
864	return ERROR_NOT_SUPPORTED;
865	}
866
867
868	DECLASM(APIRET)
869	FS32_FINDNOTIFYNEXT(ULONG hHandle, PBYTE pbData, ULONG cbData, PUSHORT pcMatchs, ULONG uLevel, ULONG cMsTimeout)
870	{
871	RT_NOREF(hHandle, pbData, cbData, pcMatchs, uLevel, cMsTimeout);
872	return ERROR_NOT_SUPPORTED;
873	}
874
875
876	DECLASM(APIRET)
877	FS32_FINDNOTIFYCLOSE(ULONG hHandle)
878	{
879	NOREF(hHandle);
880	return ERROR_NOT_SUPPORTED;
881	}
882

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source: vbox/trunk/src/VBox/Additions/os2/VBoxSF/VBoxSFFind.cpp@ 77661

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