dir.cpp@ 16684

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1	/* $Id: dir.cpp 9358 2008-06-03 15:59:24Z vboxsync $ */
2	/** @file
3	* IPRT - Directory Manipulation.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*
26	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#define LOG_GROUP RTLOGGROUP_DIR
36	#ifdef RT_OS_WINDOWS /* PORTME: Assumes everyone else is using dir-posix.cpp */
37	# include <Windows.h>
38	#else
39	# include <dirent.h>
40	# include <unistd.h>
41	# include <limits.h>
42	#endif
43
44	#include <iprt/dir.h>
45	#include <iprt/path.h>
46	#include <iprt/alloc.h>
47	#include <iprt/log.h>
48	#include <iprt/param.h>
49	#include <iprt/string.h>
50	#include <iprt/err.h>
51	#include <iprt/assert.h>
52	#include <iprt/uni.h>
53	#include "internal/fs.h"
54	#include "internal/dir.h"
55
56
57	static DECLCALLBACK(bool) rtDirFilterWinNtMatch(PRTDIR pDir, const char *pszName);
58	static DECLCALLBACK(bool) rtDirFilterWinNtMatchNoWildcards(PRTDIR pDir, const char *pszName);
59	DECLINLINE(bool) rtDirFilterWinNtMatchEon(PCRTUNICP puszFilter);
60	static bool rtDirFilterWinNtMatchDosStar(unsigned iDepth, RTUNICP uc, const char *pszNext, PCRTUNICP puszFilter);
61	static bool rtDirFilterWinNtMatchStar(unsigned iDepth, RTUNICP uc, const char *pszNext, PCRTUNICP puszFilter);
62	static bool rtDirFilterWinNtMatchBase(unsigned iDepth, const char *pszName, PCRTUNICP puszFilter);
63
64
65
66	RTDECL(int) RTDirCreateFullPath(const char *pszPath, RTFMODE fMode)
67	{
68	/*
69	* Resolve the path.
70	*/
71	char szAbsPath[RTPATH_MAX];
72	int rc = RTPathAbs(pszPath, szAbsPath, sizeof(szAbsPath));
73	if (RT_FAILURE(rc))
74	return rc;
75
76	/*
77	* Iterate the path components making sure each of them exists.
78	*/
79	/* skip volume name */
80	char *psz = &szAbsPath[rtPathVolumeSpecLen(szAbsPath)];
81
82	/* skip the root slash if any */
83	if ( psz[0] == '/'
84	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
85	\|\| psz[0] == '\\'
86	#endif
87	)
88	psz++;
89
90	/* iterate over path components. */
91	do
92	{
93	/* the next component is NULL, stop iterating */
94	if (!*psz)
95	break;
96	#if defined(RT_OS_WINDOWS) \|\| defined(RT_OS_OS2)
97	psz = strpbrk(psz, "\\/");
98	#else
99	psz = strchr(psz, '/');
100	#endif
101	if (psz)
102	*psz = '\0';
103	/*
104	* ASSUME that RTDirCreate will return VERR_ALREADY_EXISTS and not VERR_ACCESS_DENIED in those cases
105	* where the directory exists but we don't have write access to the parent directory.
106	*/
107	rc = RTDirCreate(szAbsPath, fMode);
108	if (rc == VERR_ALREADY_EXISTS)
109	rc = VINF_SUCCESS;
110	if (!psz)
111	break;
112	*psz++ = RTPATH_DELIMITER;
113	} while (RT_SUCCESS(rc));
114
115	return rc;
116	}
117
118
119	/**
120	* Filter a the filename in the against a filter.
121	*
122	* @returns true if the name matches the filter.
123	* @returns false if the name doesn't match filter.
124	* @param pDir The directory handle.
125	* @param pszName The path to match to the filter.
126	*/
127	static DECLCALLBACK(bool) rtDirFilterWinNtMatchNoWildcards(PRTDIR pDir, const char *pszName)
128	{
129	/*
130	* Walk the string and compare.
131	*/
132	PCRTUNICP pucFilter = pDir->puszFilter;
133	const char *psz = pszName;
134	RTUNICP uc;
135	do
136	{
137	int rc = RTStrGetCpEx(&psz, &uc);
138	AssertRCReturn(rc, false);
139	RTUNICP ucFilter = *pucFilter++;
140	if ( uc != ucFilter
141	&& RTUniCpToUpper(uc) != ucFilter)
142	return false;
143	} while (uc);
144	return true;
145	}
146
147
148	/**
149	* Matches end of name.
150	*/
151	DECLINLINE(bool) rtDirFilterWinNtMatchEon(PCRTUNICP puszFilter)
152	{
153	RTUNICP ucFilter;
154	while ( (ucFilter = *puszFilter) == '>'
155	\|\| ucFilter == '<'
156	\|\| ucFilter == '*'
157	\|\| ucFilter == '"')
158	puszFilter++;
159	return !ucFilter;
160	}
161
162
163	/**
164	* Recursive star matching.
165	* Practically the same as normal star, except that the dos star stops
166	* when hitting the last dot.
167	*
168	* @returns true on match.
169	* @returns false on miss.
170	*/
171	static bool rtDirFilterWinNtMatchDosStar(unsigned iDepth, RTUNICP uc, const char *pszNext, PCRTUNICP puszFilter)
172	{
173	AssertReturn(iDepth++ < 256, false);
174
175	/*
176	* If there is no dos star, we should work just like the NT star.
177	* Since that's generally faster algorithms, we jump down to there if we can.
178	*/
179	const char *pszDosDot = strrchr(pszNext, '.');
180	if (!pszDosDot && uc == '.')
181	pszDosDot = pszNext - 1;
182	if (!pszDosDot)
183	return rtDirFilterWinNtMatchStar(iDepth, uc, pszNext, puszFilter);
184
185	/*
186	* Inspect the next filter char(s) until we find something to work on.
187	*/
188	RTUNICP ucFilter = *puszFilter++;
189	switch (ucFilter)
190	{
191	/*
192	* The star expression is the last in the pattern.
193	* We're fine if the name ends with a dot.
194	*/
195	case '\0':
196	return !pszDosDot[1];
197
198	/*
199	* Simplified by brute force.
200	*/
201	case '>': /* dos question mark */
202	case '?':
203	case '*':
204	case '<': /* dos star */
205	case '"': /* dos dot */
206	{
207	puszFilter--;
208	const char *pszStart = pszNext;
209	do
210	{
211	if (rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter))
212	return true;
213	int rc = RTStrGetCpEx(&pszNext, &uc); AssertRCReturn(rc, false);
214	} while ((intptr_t)pszDosDot - (intptr_t)pszNext >= -1);
215
216	/* backtrack and do the current char. */
217	pszNext = RTStrPrevCp(NULL, pszStart); AssertReturn(pszNext, false);
218	return rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter);
219	}
220
221	/*
222	* Ok, we've got zero or more characters.
223	* We'll try match starting at each occurence of this character.
224	*/
225	default:
226	{
227	if ( RTUniCpToUpper(uc) == ucFilter
228	&& rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter))
229	return true;
230	do
231	{
232	int rc = RTStrGetCpEx(&pszNext, &uc); AssertRCReturn(rc, false);
233	if ( RTUniCpToUpper(uc) == ucFilter
234	&& rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter))
235	return true;
236	} while ((intptr_t)pszDosDot - (intptr_t)pszNext >= -1);
237	return false;
238	}
239	}
240	/* won't ever get here! */
241	}
242
243
244	/**
245	* Recursive star matching.
246	*
247	* @returns true on match.
248	* @returns false on miss.
249	*/
250	static bool rtDirFilterWinNtMatchStar(unsigned iDepth, RTUNICP uc, const char *pszNext, PCRTUNICP puszFilter)
251	{
252	AssertReturn(iDepth++ < 256, false);
253
254	/*
255	* Inspect the next filter char(s) until we find something to work on.
256	*/
257	for (;;)
258	{
259	RTUNICP ucFilter = *puszFilter++;
260	switch (ucFilter)
261	{
262	/*
263	* The star expression is the last in the pattern.
264	* Cool, that means we're done!
265	*/
266	case '\0':
267	return true;
268
269	/*
270	* Just in case (doubt we ever get here), just merge it with the current one.
271	*/
272	case '*':
273	break;
274
275	/*
276	* Skip a fixed number of chars.
277	* Figure out how many by walking the filter ignoring '*'s.
278	*/
279	case '?':
280	{
281	unsigned cQms = 1;
282	while ((ucFilter = puszFilter) == '' \|\| ucFilter == '?')
283	{
284	cQms += ucFilter == '?';
285	puszFilter++;
286	}
287	do
288	{
289	if (!uc)
290	return false;
291	int rc = RTStrGetCpEx(&pszNext, &uc); AssertRCReturn(rc, false);
292	} while (--cQms > 0);
293	/* done? */
294	if (!ucFilter)
295	return true;
296	break;
297	}
298
299	/*
300	* The simple way is to try char by char and match the remaining
301	* expression. If it's trailing we're done.
302	*/
303	case '>': /* dos question mark */
304	{
305	if (rtDirFilterWinNtMatchEon(puszFilter))
306	return true;
307	const char *pszStart = pszNext;
308	do
309	{
310	if (rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter))
311	return true;
312	int rc = RTStrGetCpEx(&pszNext, &uc); AssertRCReturn(rc, false);
313	} while (uc);
314
315	/* backtrack and do the current char. */
316	pszNext = RTStrPrevCp(NULL, pszStart); AssertReturn(pszNext, false);
317	return rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter);
318	}
319
320	/*
321	* This bugger is interesting.
322	* Time for brute force. Iterate the name char by char.
323	*/
324	case '<':
325	{
326	do
327	{
328	if (rtDirFilterWinNtMatchDosStar(iDepth, uc, pszNext, puszFilter))
329	return true;
330	int rc = RTStrGetCpEx(&pszNext, &uc); AssertRCReturn(rc, false);
331	} while (uc);
332	return false;
333	}
334
335	/*
336	* This guy matches a '.' or the end of the name.
337	* It's very simple if the rest of the filter expression also matches eon.
338	*/
339	case '"':
340	if (rtDirFilterWinNtMatchEon(puszFilter))
341	return true;
342	ucFilter = '.';
343	/* fall thru */
344
345	/*
346	* Ok, we've got zero or more characters.
347	* We'll try match starting at each occurence of this character.
348	*/
349	default:
350	{
351	do
352	{
353	if ( RTUniCpToUpper(uc) == ucFilter
354	&& rtDirFilterWinNtMatchBase(iDepth, pszNext, puszFilter))
355	return true;
356	int rc = RTStrGetCpEx(&pszNext, &uc); AssertRCReturn(rc, false);
357	} while (uc);
358	return false;
359	}
360	}
361	} /* for (;;) */
362
363	/* won't ever get here! */
364	}
365
366
367	/**
368	* Filter a the filename in the against a filter.
369	*
370	* The rules are as follows:
371	* '?' Matches exactly one char.
372	* '*' Matches zero or more chars.
373	* '<' The dos star, matches zero or more chars except the DOS dot.
374	* '>' The dos question mark, matches one char, but dots and end-of-name eats them.
375	* '"' The dos dot, matches a dot or end-of-name.
376	*
377	* @returns true if the name matches the filter.
378	* @returns false if the name doesn't match filter.
379	* @param iDepth The recursion depth.
380	* @param pszName The path to match to the filter.
381	* @param puszFilter The filter string.
382	*/
383	static bool rtDirFilterWinNtMatchBase(unsigned iDepth, const char *pszName, PCRTUNICP puszFilter)
384	{
385	AssertReturn(iDepth++ < 256, false);
386
387	/*
388	* Walk the string and match it up char by char.
389	*/
390	RTUNICP uc;
391	do
392	{
393	RTUNICP ucFilter = *puszFilter++;
394	int rc = RTStrGetCpEx(&pszName, &uc); AssertRCReturn(rc, false);
395	switch (ucFilter)
396	{
397	/* Exactly one char. */
398	case '?':
399	if (!uc)
400	return false;
401	break;
402
403	/* One char, but the dos dot and end-of-name eats '>' and '<'. */
404	case '>': /* dos ? */
405	if (!uc)
406	return rtDirFilterWinNtMatchEon(puszFilter);
407	if (uc == '.')
408	{
409	while ((ucFilter = *puszFilter) == '>' \|\| ucFilter == '<')
410	puszFilter++;
411	if (ucFilter == '"' \|\| ucFilter == '.') /* not 100% sure about the last dot */
412	++puszFilter;
413	else /* the does question mark doesn't match '.'s, so backtrack. */
414	pszName = RTStrPrevCp(NULL, pszName);
415	}
416	break;
417
418	/* Match a dot or the end-of-name. */
419	case '"': /* dos '.' */
420	if (uc != '.')
421	{
422	if (uc)
423	return false;
424	return rtDirFilterWinNtMatchEon(puszFilter);
425	}
426	break;
427
428	/* zero or more */
429	case '*':
430	return rtDirFilterWinNtMatchStar(iDepth, uc, pszName, puszFilter);
431	case '<': /* dos '' /
432	return rtDirFilterWinNtMatchDosStar(iDepth, uc, pszName, puszFilter);
433
434
435	/* uppercased match */
436	default:
437	{
438	if (RTUniCpToUpper(uc) != ucFilter)
439	return false;
440	break;
441	}
442	}
443	} while (uc);
444
445	return true;
446	}
447
448
449	/**
450	* Filter a the filename in the against a filter.
451	*
452	* @returns true if the name matches the filter.
453	* @returns false if the name doesn't match filter.
454	* @param pDir The directory handle.
455	* @param pszName The path to match to the filter.
456	*/
457	static DECLCALLBACK(bool) rtDirFilterWinNtMatch(PRTDIR pDir, const char *pszName)
458	{
459	return rtDirFilterWinNtMatchBase(0, pszName, pDir->puszFilter);
460	}
461
462
463	/**
464	* Initializes a WinNt like wildcard filter.
465	*
466	* @returns Pointer to the filter function.
467	* @returns NULL if the filter doesn't filter out anything.
468	* @param pDir The directory handle (not yet opened).
469	*/
470	static PFNRTDIRFILTER rtDirFilterWinNtInit(PRTDIR pDir)
471	{
472	/*
473	* Check for the usual * and <"< (. in DOS language) patterns.
474	*/
475	if ( (pDir->cchFilter == 1 && pDir->pszFilter[0] == '*')
476	\|\| (pDir->cchFilter == 3 && !memcmp(pDir->pszFilter, "<\".>", 3))
477	)
478	return NULL;
479
480	/*
481	* Uppercase the expression, also do a little optimizations when possible.
482	*/
483	bool fHaveWildcards = false;
484	unsigned iRead = 0;
485	unsigned iWrite = 0;
486	while (iRead < pDir->cucFilter)
487	{
488	RTUNICP uc = pDir->puszFilter[iRead++];
489	if (uc == '*')
490	{
491	fHaveWildcards = true;
492	/* remove extra stars. */
493	RTUNICP uc2;
494	while ((uc2 = pDir->puszFilter[iRead + 1]) == '*')
495	iRead++;
496	}
497	else if (uc == '?' \|\| uc == '>' \|\| uc == '<' \|\| uc == '"')
498	fHaveWildcards = true;
499	else
500	uc = RTUniCpToUpper(uc);
501	pDir->puszFilter[iWrite++] = uc;
502	}
503	pDir->puszFilter[iWrite] = 0;
504	pDir->cucFilter = iWrite;
505
506	return fHaveWildcards
507	? rtDirFilterWinNtMatch
508	: rtDirFilterWinNtMatchNoWildcards;
509	}
510
511
512	/**
513	* Common worker for opening a directory.
514	*
515	* @returns IPRT status code.
516	* @param ppDir Where to store the directory handle.
517	* @param pszPath The specified path.
518	* @param pszFilter Pointer to where the filter start in the path. NULL if no filter.
519	* @param enmFilter The type of filter to apply.
520	*/
521	static int rtDirOpenCommon(PRTDIR ppDir, const char pszPath, const char *pszFilter, RTDIRFILTER enmFilter)
522	{
523	/*
524	* Expand the path.
525	*
526	* The purpose of this exercise to have the abs path around
527	* for querying extra information about the objects we list.
528	* As a sideeffect we also validate the path here.
529	*/
530	char szRealPath[RTPATH_MAX + 1];
531	int rc;
532	size_t cbFilter; /* includes '\0' (thus cb and not cch). */
533	size_t cucFilter0; /* includes U+0. */
534	if (!pszFilter)
535	{
536	cbFilter = cucFilter0 = 0;
537	rc = RTPathReal(pszPath, szRealPath, sizeof(szRealPath) - 1);
538	}
539	else
540	{
541	cbFilter = strlen(pszFilter) + 1;
542	cucFilter0 = RTStrUniLen(pszFilter) + 1;
543
544	if (pszFilter != pszPath)
545	{
546	/* yea, I'm lazy. sue me. */
547	char *pszTmp = RTStrDup(pszPath);
548	if (!pszTmp)
549	return VERR_NO_MEMORY;
550	pszTmp[pszFilter - pszPath] = '\0';
551	rc = RTPathReal(pszTmp, szRealPath, sizeof(szRealPath) - 1);
552	RTStrFree(pszTmp);
553	}
554	else
555	rc = RTPathReal(".", szRealPath, sizeof(szRealPath) - 1);
556	}
557	if (RT_FAILURE(rc))
558	return rc;
559
560	/* add trailing '/' if missing. */
561	size_t cchRealPath = strlen(szRealPath);
562	if (!RTPATH_IS_SEP(szRealPath[cchRealPath - 1]))
563	{
564	szRealPath[cchRealPath++] = RTPATH_SLASH;
565	szRealPath[cchRealPath] = '\0';
566	}
567
568	/*
569	* Allocate and initialize the directory handle.
570	*
571	* The posix definition of Data.d_name allows it to be < NAME_MAX + 1,
572	* thus the horrible uglyness here. Solaris uses d_name[1] for instance.
573	*/
574	#ifndef RT_OS_WINDOWS
575	long cbNameMax = pathconf(szRealPath, _PC_NAME_MAX);
576	# ifdef NAME_MAX
577	if (cbNameMax < NAME_MAX) /* This is plain paranoia, but it doesn't hurt. */
578	cbNameMax = NAME_MAX;
579	# endif
580	# ifdef _XOPEN_NAME_MAX
581	if (cbNameMax < _XOPEN_NAME_MAX) /* Ditto. */
582	cbNameMax = _XOPEN_NAME_MAX;
583	# endif
584	size_t cbDir = RT_OFFSETOF(RTDIR, Data.d_name[cbNameMax + 1]);
585	if (cbDir < sizeof(RTDIR)) /* Ditto. */
586	cbDir = sizeof(RTDIR);
587	cbDir = RT_ALIGN_Z(cbDir, 8);
588	#else
589	size_t cbDir = sizeof(RTDIR);
590	#endif
591	size_t const cbAllocated = cbDir
592	+ cucFilter0 * sizeof(RTUNICP)
593	+ cbFilter
594	+ cchRealPath + 1 + 4;
595	PRTDIR pDir = (PRTDIR)RTMemAlloc(cbAllocated);
596	if (!pDir)
597	return VERR_NO_MEMORY;
598	uint8_t pb = (uint8_t )pDir + cbDir;
599
600	/* initialize it */
601	pDir->u32Magic = RTDIR_MAGIC;
602	if (cbFilter)
603	{
604	pDir->puszFilter = (PRTUNICP)pb;
605	rc = RTStrToUniEx(pszFilter, RTSTR_MAX, &pDir->puszFilter, cucFilter0, &pDir->cucFilter);
606	AssertRC(rc);
607	pb += cucFilter0 * sizeof(RTUNICP);
608	pDir->pszFilter = (char *)memcpy(pb, pszFilter, cbFilter);
609	pDir->cchFilter = cbFilter - 1;
610	pb += cbFilter;
611	}
612	else
613	{
614	pDir->puszFilter = NULL;
615	pDir->cucFilter = 0;
616	pDir->pszFilter = NULL;
617	pDir->cchFilter = 0;
618	}
619	pDir->enmFilter = enmFilter;
620	switch (enmFilter)
621	{
622	default:
623	case RTDIRFILTER_NONE:
624	pDir->pfnFilter = NULL;
625	break;
626	case RTDIRFILTER_WINNT:
627	pDir->pfnFilter = rtDirFilterWinNtInit(pDir);
628	break;
629	case RTDIRFILTER_UNIX:
630	pDir->pfnFilter = NULL;
631	break;
632	case RTDIRFILTER_UNIX_UPCASED:
633	pDir->pfnFilter = NULL;
634	break;
635	}
636	pDir->cchPath = cchRealPath;
637	pDir->pszPath = (char *)memcpy(pb, szRealPath, cchRealPath + 1);
638	Assert(pb - (uint8_t *)pDir + cchRealPath + 1 <= cbAllocated);
639	pDir->fDataUnread = false;
640	#ifndef RT_DONT_CONVERT_FILENAMES
641	pDir->pszName = NULL;
642	pDir->cchName = 0;
643	#endif
644	#ifndef RT_OS_WINDOWS
645	pDir->cbMaxName = cbDir - RT_OFFSETOF(RTDIR, Data.d_name);
646	#endif
647
648	/*
649	* Hand it over to the native part.
650	*/
651	rc = rtOpenDirNative(pDir, szRealPath);
652	if (RT_SUCCESS(rc))
653	*ppDir = pDir;
654	else
655	RTMemFree(pDir);
656
657	return rc;
658	}
659
660
661
662	RTDECL(int) RTDirOpen(PRTDIR ppDir, const char pszPath)
663	{
664	/*
665	* Validate input.
666	*/
667	AssertMsgReturn(VALID_PTR(ppDir), ("%p\n", ppDir), VERR_INVALID_POINTER);
668	AssertMsgReturn(VALID_PTR(pszPath), ("%p\n", pszPath), VERR_INVALID_POINTER);
669
670	/*
671	* Take common cause with RTDirOpenFiltered().
672	*/
673	int rc = rtDirOpenCommon(ppDir, pszPath, NULL, RTDIRFILTER_NONE);
674	LogFlow(("RTDirOpen(%p:{%p}, %p:{%s}): return %Rrc\n", ppDir, *ppDir, pszPath, pszPath, rc));
675	return rc;
676	}
677
678
679	RTDECL(int) RTDirOpenFiltered(PRTDIR ppDir, const char pszPath, RTDIRFILTER enmFilter)
680	{
681	/*
682	* Validate input.
683	*/
684	AssertMsgReturn(VALID_PTR(ppDir), ("%p\n", ppDir), VERR_INVALID_POINTER);
685	AssertMsgReturn(VALID_PTR(pszPath), ("%p\n", pszPath), VERR_INVALID_POINTER);
686	switch (enmFilter)
687	{
688	case RTDIRFILTER_UNIX:
689	case RTDIRFILTER_UNIX_UPCASED:
690	AssertMsgFailed(("%d is not implemented!\n", enmFilter));
691	return VERR_NOT_IMPLEMENTED;
692	case RTDIRFILTER_NONE:
693	case RTDIRFILTER_WINNT:
694	break;
695	default:
696	AssertMsgFailedReturn(("%d\n", enmFilter), VERR_INVALID_PARAMETER);
697	}
698
699	/*
700	* Find the last component, i.e. where the filter criteria starts and the dir name ends.
701	*/
702	const char *pszFilter = enmFilter != RTDIRFILTER_NONE
703	? RTPathFilename(pszPath)
704	: NULL;
705
706	/*
707	* Call worker common with RTDirOpen which will verify the path, allocate
708	* and initialize the handle, and finally call the backend.
709	*/
710	int rc = rtDirOpenCommon(ppDir, pszPath, pszFilter, enmFilter);
711
712	LogFlow(("RTDirOpenFiltered(%p:{%p}, %p:{%s}, %d): return %Rrc\n",
713	ppDir, *ppDir, pszPath, pszPath, enmFilter, rc));
714	return rc;
715	}
716

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source: vbox/trunk/src/VBox/Runtime/r3/dir.cpp@ 16684

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