path-win.cpp@ 34002

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1	/* $Id: path-win.cpp 34002 2010-11-11 17:16:37Z vboxsync $ */
2	/** @file
3	* IPRT - Path manipulation.
4	*/
5
6	/*
7	* Copyright (C) 2006-2010 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*******************************************************************************
29	* Header Files *
30	*******************************************************************************/
31	#define LOG_GROUP RTLOGGROUP_PATH
32	#include <Windows.h>
33
34	#include <iprt/path.h>
35	#include <iprt/assert.h>
36	#include <iprt/string.h>
37	#include <iprt/time.h>
38	#include <iprt/mem.h>
39	#include <iprt/param.h>
40	#include <iprt/log.h>
41	#include <iprt/err.h>
42	#include "internal/path.h"
43	#include "internal/fs.h"
44
45
46	/**
47	* Get the real (no symlinks, no . or .. components) path, must exist.
48	*
49	* @returns iprt status code.
50	* @param pszPath The path to resolve.
51	* @param pszRealPath Where to store the real path.
52	* @param cchRealPath Size of the buffer.
53	*/
54	RTDECL(int) RTPathReal(const char pszPath, char pszRealPath, size_t cchRealPath)
55	{
56	/*
57	* Convert to UTF-16, call Win32 APIs, convert back.
58	*/
59	PRTUTF16 pwszPath;
60	int rc = RTStrToUtf16(pszPath, &pwszPath);
61	if (!RT_SUCCESS(rc))
62	return (rc);
63
64	LPWSTR lpFile;
65	WCHAR wsz[RTPATH_MAX];
66	rc = GetFullPathNameW((LPCWSTR)pwszPath, RT_ELEMENTS(wsz), &wsz[0], &lpFile);
67	if (rc > 0 && rc < RT_ELEMENTS(wsz))
68	{
69	/* Check that it exists. (Use RTPathAbs() to just resolve the name.) */
70	DWORD dwAttr = GetFileAttributesW(wsz);
71	if (dwAttr != INVALID_FILE_ATTRIBUTES)
72	rc = RTUtf16ToUtf8Ex((PRTUTF16)&wsz[0], RTSTR_MAX, &pszRealPath, cchRealPath, NULL);
73	else
74	rc = RTErrConvertFromWin32(GetLastError());
75	}
76	else if (rc <= 0)
77	rc = RTErrConvertFromWin32(GetLastError());
78	else
79	rc = VERR_FILENAME_TOO_LONG;
80
81	RTUtf16Free(pwszPath);
82
83	return rc;
84	}
85
86
87	/**
88	* Get the absolute path (no symlinks, no . or .. components), doesn't have to exit.
89	*
90	* @returns iprt status code.
91	* @param pszPath The path to resolve.
92	* @param pszAbsPath Where to store the absolute path.
93	* @param cchAbsPath Size of the buffer.
94	*/
95	RTDECL(int) RTPathAbs(const char pszPath, char pszAbsPath, size_t cchAbsPath)
96	{
97	/*
98	* Validation.
99	*/
100	AssertPtr(pszAbsPath);
101	AssertPtr(pszPath);
102	if (RT_UNLIKELY(!*pszPath))
103	return VERR_INVALID_PARAMETER;
104
105	/*
106	* Convert to UTF-16, call Win32 API, convert back.
107	*/
108	LPWSTR pwszPath;
109	int rc = RTStrToUtf16(pszPath, &pwszPath);
110	if (!RT_SUCCESS(rc))
111	return (rc);
112
113	LPWSTR pwszFile; /* Ignored */
114	RTUTF16 wsz[RTPATH_MAX];
115	rc = GetFullPathNameW(pwszPath, RT_ELEMENTS(wsz), &wsz[0], &pwszFile);
116	if (rc > 0 && rc < RT_ELEMENTS(wsz))
117	{
118	size_t cch;
119	rc = RTUtf16ToUtf8Ex(&wsz[0], RTSTR_MAX, &pszAbsPath, cchAbsPath, &cch);
120	if (RT_SUCCESS(rc))
121	{
122	/*
123	* Remove trailing slash if the path may be pointing to a directory.
124	* (See posix variant.)
125	*/
126	if ( cch > 1
127	&& RTPATH_IS_SLASH(pszAbsPath[cch - 1])
128	&& !RTPATH_IS_VOLSEP(pszAbsPath[cch - 2])
129	&& !RTPATH_IS_SLASH(pszAbsPath[cch - 2]))
130	pszAbsPath[cch - 1] = '\0';
131	}
132	}
133	else if (rc <= 0)
134	rc = RTErrConvertFromWin32(GetLastError());
135	else
136	rc = VERR_FILENAME_TOO_LONG;
137
138	RTUtf16Free(pwszPath);
139	return rc;
140	}
141
142
143	/**
144	* Gets the user home directory.
145	*
146	* @returns iprt status code.
147	* @param pszPath Buffer where to store the path.
148	* @param cchPath Buffer size in bytes.
149	*/
150	RTDECL(int) RTPathUserHome(char *pszPath, size_t cchPath)
151	{
152	RTUTF16 wszPath[RTPATH_MAX];
153	DWORD dwAttr;
154
155	/*
156	* There are multiple definitions for what WE think of as user home...
157	*/
158	if ( !GetEnvironmentVariableW(L"HOME", &wszPath[0], RTPATH_MAX)
159	\|\| (dwAttr = GetFileAttributesW(&wszPath[0])) == INVALID_FILE_ATTRIBUTES
160	\|\| !(dwAttr & FILE_ATTRIBUTE_DIRECTORY))
161	{
162	if ( !GetEnvironmentVariableW(L"USERPROFILE", &wszPath[0], RTPATH_MAX)
163	\|\| (dwAttr = GetFileAttributesW(&wszPath[0])) == INVALID_FILE_ATTRIBUTES
164	\|\| !(dwAttr & FILE_ATTRIBUTE_DIRECTORY))
165	{
166	/* %HOMEDRIVE%%HOMEPATH% */
167	if (!GetEnvironmentVariableW(L"HOMEDRIVE", &wszPath[0], RTPATH_MAX))
168	return VERR_PATH_NOT_FOUND;
169	size_t const cwc = RTUtf16Len(&wszPath[0]);
170	if ( !GetEnvironmentVariableW(L"HOMEPATH", &wszPath[cwc], RTPATH_MAX - (DWORD)cwc)
171	\|\| (dwAttr = GetFileAttributesW(&wszPath[0])) == INVALID_FILE_ATTRIBUTES
172	\|\| !(dwAttr & FILE_ATTRIBUTE_DIRECTORY))
173	return VERR_PATH_NOT_FOUND;
174	}
175	}
176
177	/*
178	* Convert and return.
179	*/
180	return RTUtf16ToUtf8Ex(&wszPath[0], RTSTR_MAX, &pszPath, cchPath, NULL);
181	}
182
183
184	RTR3DECL(int) RTPathQueryInfo(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
185	{
186	return RTPathQueryInfoEx(pszPath, pObjInfo, enmAdditionalAttribs, RTPATH_F_ON_LINK);
187	}
188
189
190	RTR3DECL(int) RTPathQueryInfoEx(const char *pszPath, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs, uint32_t fFlags)
191	{
192	/*
193	* Validate input.
194	*/
195	AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
196	AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
197	AssertPtrReturn(pObjInfo, VERR_INVALID_POINTER);
198	AssertMsgReturn( enmAdditionalAttribs >= RTFSOBJATTRADD_NOTHING
199	&& enmAdditionalAttribs <= RTFSOBJATTRADD_LAST,
200	("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs),
201	VERR_INVALID_PARAMETER);
202	AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
203
204	/*
205	* Query file info.
206	*/
207	WIN32_FILE_ATTRIBUTE_DATA Data;
208	PRTUTF16 pwszPath;
209	int rc = RTStrToUtf16(pszPath, &pwszPath);
210	if (RT_FAILURE(rc))
211	return rc;
212	if (!GetFileAttributesExW(pwszPath, GetFileExInfoStandard, &Data))
213	{
214	/* Fallback to FindFileFirst in case of sharing violation. */
215	if (GetLastError() == ERROR_SHARING_VIOLATION)
216	{
217	WIN32_FIND_DATAW FindData;
218	HANDLE hDir = FindFirstFileW(pwszPath, &FindData);
219	if (hDir == INVALID_HANDLE_VALUE)
220	{
221	rc = RTErrConvertFromWin32(GetLastError());
222	RTUtf16Free(pwszPath);
223	return rc;
224	}
225	FindClose(hDir);
226
227	Data.dwFileAttributes = FindData.dwFileAttributes;
228	Data.ftCreationTime = FindData.ftCreationTime;
229	Data.ftLastAccessTime = FindData.ftLastAccessTime;
230	Data.ftLastWriteTime = FindData.ftLastWriteTime;
231	Data.nFileSizeHigh = FindData.nFileSizeHigh;
232	Data.nFileSizeLow = FindData.nFileSizeLow;
233	}
234	else
235	{
236	rc = RTErrConvertFromWin32(GetLastError());
237	RTUtf16Free(pwszPath);
238	return rc;
239	}
240	}
241
242	/*
243	* Getting the information for the link target is a bit annoying and
244	* subject to the same access violation mess as above.. :/
245	*/
246	/** @todo we're too lazy wrt to error paths here... */
247	if ( (fFlags & RTPATH_F_FOLLOW_LINK)
248	&& (Data.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT))
249	{
250	HANDLE hFinal = CreateFileW(pwszPath,
251	GENERIC_READ,
252	FILE_SHARE_READ \| FILE_SHARE_WRITE \| FILE_SHARE_DELETE,
253	NULL,
254	OPEN_EXISTING,
255	FILE_FLAG_BACKUP_SEMANTICS,
256	NULL);
257	if (hFinal != INVALID_HANDLE_VALUE)
258	{
259	BY_HANDLE_FILE_INFORMATION FileData;
260	if (GetFileInformationByHandle(hFinal, &FileData))
261	{
262	Data.dwFileAttributes = FileData.dwFileAttributes;
263	Data.ftCreationTime = FileData.ftCreationTime;
264	Data.ftLastAccessTime = FileData.ftLastAccessTime;
265	Data.ftLastWriteTime = FileData.ftLastWriteTime;
266	Data.nFileSizeHigh = FileData.nFileSizeHigh;
267	Data.nFileSizeLow = FileData.nFileSizeLow;
268	}
269	CloseHandle(hFinal);
270	}
271	else if (GetLastError() != ERROR_SHARING_VIOLATION)
272	{
273	rc = RTErrConvertFromWin32(GetLastError());
274	RTUtf16Free(pwszPath);
275	return rc;
276	}
277	}
278
279	RTUtf16Free(pwszPath);
280
281	/*
282	* Setup the returned data.
283	*/
284	pObjInfo->cbObject = ((uint64_t)Data.nFileSizeHigh << 32)
285	\| (uint64_t)Data.nFileSizeLow;
286	pObjInfo->cbAllocated = pObjInfo->cbObject;
287
288	Assert(sizeof(uint64_t) == sizeof(Data.ftCreationTime));
289	RTTimeSpecSetNtTime(&pObjInfo->BirthTime, (uint64_t )&Data.ftCreationTime);
290	RTTimeSpecSetNtTime(&pObjInfo->AccessTime, (uint64_t )&Data.ftLastAccessTime);
291	RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, (uint64_t )&Data.ftLastWriteTime);
292	pObjInfo->ChangeTime = pObjInfo->ModificationTime;
293
294	pObjInfo->Attr.fMode = rtFsModeFromDos((Data.dwFileAttributes << RTFS_DOS_SHIFT) & RTFS_DOS_MASK_NT,
295	pszPath, strlen(pszPath));
296
297	/*
298	* Requested attributes (we cannot provide anything actually).
299	*/
300	switch (enmAdditionalAttribs)
301	{
302	case RTFSOBJATTRADD_NOTHING:
303	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_NOTHING;
304	break;
305
306	case RTFSOBJATTRADD_UNIX:
307	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX;
308	pObjInfo->Attr.u.Unix.uid = ~0U;
309	pObjInfo->Attr.u.Unix.gid = ~0U;
310	pObjInfo->Attr.u.Unix.cHardlinks = 1;
311	pObjInfo->Attr.u.Unix.INodeIdDevice = 0; /** @todo use volume serial number */
312	pObjInfo->Attr.u.Unix.INodeId = 0; /** @todo use fileid (see GetFileInformationByHandle). */
313	pObjInfo->Attr.u.Unix.fFlags = 0;
314	pObjInfo->Attr.u.Unix.GenerationId = 0;
315	pObjInfo->Attr.u.Unix.Device = 0;
316	break;
317
318	case RTFSOBJATTRADD_UNIX_OWNER:
319	pObjInfo->Info.Attr.enmAdditional = RTFSOBJATTRADD_UNIX_OWNER;
320	pObjInfo->Info.Attr.u.UnixOwner.uid = ~0U;
321	pObjInfo->Info.Attr.u.UnixOwner.szName[0] = '\0'; /** @todo return something sensible here. */
322	break;
323
324	case RTFSOBJATTRADD_UNIX_GROUP:
325	pObjInfo->Info.Attr.enmAdditional = RTFSOBJATTRADD_UNIX_GROUP;
326	pObjInfo->Info.Attr.u.UnixGroup.gid = ~0U;
327	pObjInfo->Info.Attr.u.UnixGroup.szName[0] = '\0';
328	break;
329
330	case RTFSOBJATTRADD_EASIZE:
331	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
332	pObjInfo->Attr.u.EASize.cb = 0;
333	break;
334
335	default:
336	AssertMsgFailed(("Impossible!\n"));
337	return VERR_INTERNAL_ERROR;
338	}
339
340	return VINF_SUCCESS;
341	}
342
343
344	RTR3DECL(int) RTPathSetTimes(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
345	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
346	{
347	return RTPathSetTimesEx(pszPath, pAccessTime, pModificationTime, pChangeTime, pBirthTime, RTPATH_F_ON_LINK);
348	}
349
350
351	RTR3DECL(int) RTPathSetTimesEx(const char *pszPath, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
352	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime, uint32_t fFlags)
353	{
354	/*
355	* Validate input.
356	*/
357	AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
358	AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
359	AssertPtrNullReturn(pAccessTime, VERR_INVALID_POINTER);
360	AssertPtrNullReturn(pModificationTime, VERR_INVALID_POINTER);
361	AssertPtrNullReturn(pChangeTime, VERR_INVALID_POINTER);
362	AssertPtrNullReturn(pBirthTime, VERR_INVALID_POINTER);
363	AssertMsgReturn(RTPATH_F_IS_VALID(fFlags, 0), ("%#x\n", fFlags), VERR_INVALID_PARAMETER);
364
365	/*
366	* Convert the path.
367	*/
368	PRTUTF16 pwszPath;
369	int rc = RTStrToUtf16(pszPath, &pwszPath);
370	if (RT_SUCCESS(rc))
371	{
372	HANDLE hFile;
373	if (fFlags & RTPATH_F_FOLLOW_LINK)
374	hFile = CreateFileW(pwszPath,
375	FILE_WRITE_ATTRIBUTES, /* dwDesiredAccess */
376	FILE_SHARE_WRITE \| FILE_SHARE_READ \| FILE_SHARE_DELETE, /* dwShareMode */
377	NULL, /* security attribs */
378	OPEN_EXISTING, /* dwCreationDisposition */
379	FILE_FLAG_BACKUP_SEMANTICS \| FILE_ATTRIBUTE_NORMAL,
380	NULL);
381	else
382	{
383	/** @todo Symlink: Test RTPathSetTimesEx on Windows. (The code is disabled
384	* because it's not tested yet.) */
385	#if 0 //def FILE_FLAG_OPEN_REPARSE_POINT
386	hFile = CreateFileW(pwszPath,
387	FILE_WRITE_ATTRIBUTES, /* dwDesiredAccess */
388	FILE_SHARE_WRITE \| FILE_SHARE_READ \| FILE_SHARE_DELETE, /* dwShareMode */
389	NULL, /* security attribs */
390	OPEN_EXISTING, /* dwCreationDisposition */
391	FILE_FLAG_BACKUP_SEMANTICS \| FILE_ATTRIBUTE_NORMAL \| FILE_FLAG_OPEN_REPARSE_POINT,
392	NULL);
393
394	if (hFile == INVALID_HANDLE_VALUE && GetLastError() == ERROR_INVALID_PARAMETER)
395	#endif
396	hFile = CreateFileW(pwszPath,
397	FILE_WRITE_ATTRIBUTES, /* dwDesiredAccess */
398	FILE_SHARE_WRITE \| FILE_SHARE_READ \| FILE_SHARE_DELETE, /* dwShareMode */
399	NULL, /* security attribs */
400	OPEN_EXISTING, /* dwCreationDisposition */
401	FILE_FLAG_BACKUP_SEMANTICS \| FILE_ATTRIBUTE_NORMAL,
402	NULL);
403	}
404	if (hFile != INVALID_HANDLE_VALUE)
405	{
406	/*
407	* Check if it's a no-op.
408	*/
409	if (!pAccessTime && !pModificationTime && !pBirthTime)
410	rc = VINF_SUCCESS; /* NOP */
411	else
412	{
413	/*
414	* Convert the input and call the API.
415	*/
416	FILETIME CreationTimeFT;
417	PFILETIME pCreationTimeFT = NULL;
418	if (pBirthTime)
419	pCreationTimeFT = RTTimeSpecGetNtFileTime(pBirthTime, &CreationTimeFT);
420
421	FILETIME LastAccessTimeFT;
422	PFILETIME pLastAccessTimeFT = NULL;
423	if (pAccessTime)
424	pLastAccessTimeFT = RTTimeSpecGetNtFileTime(pAccessTime, &LastAccessTimeFT);
425
426	FILETIME LastWriteTimeFT;
427	PFILETIME pLastWriteTimeFT = NULL;
428	if (pModificationTime)
429	pLastWriteTimeFT = RTTimeSpecGetNtFileTime(pModificationTime, &LastWriteTimeFT);
430
431	if (SetFileTime(hFile, pCreationTimeFT, pLastAccessTimeFT, pLastWriteTimeFT))
432	rc = VINF_SUCCESS;
433	else
434	{
435	DWORD Err = GetLastError();
436	rc = RTErrConvertFromWin32(Err);
437	Log(("RTPathSetTimes('%s', %p, %p, %p, %p): SetFileTime failed with lasterr %d (%Rrc)\n",
438	pszPath, pAccessTime, pModificationTime, pChangeTime, pBirthTime, Err, rc));
439	}
440	}
441	BOOL fRc = CloseHandle(hFile); Assert(fRc); NOREF(fRc);
442	}
443	else
444	{
445	DWORD Err = GetLastError();
446	rc = RTErrConvertFromWin32(Err);
447	Log(("RTPathSetTimes('%s',,,,): failed with %Rrc and lasterr=%u\n", pszPath, rc, Err));
448	}
449
450	RTUtf16Free(pwszPath);
451	}
452
453	LogFlow(("RTPathSetTimes(%p:{%s}, %p:{%RDtimespec}, %p:{%RDtimespec}, %p:{%RDtimespec}, %p:{%RDtimespec}): return %Rrc\n",
454	pszPath, pszPath, pAccessTime, pAccessTime, pModificationTime, pModificationTime,
455	pChangeTime, pChangeTime, pBirthTime, pBirthTime));
456	return rc;
457	}
458
459
460
461
462	/**
463	* Internal worker for RTFileRename and RTFileMove.
464	*
465	* @returns iprt status code.
466	* @param pszSrc The source filename.
467	* @param pszDst The destination filename.
468	* @param fFlags The windows MoveFileEx flags.
469	* @param fFileType The filetype. We use the RTFMODE filetypes here. If it's 0,
470	* anything goes. If it's RTFS_TYPE_DIRECTORY we'll check that the
471	* source is a directory. If Its RTFS_TYPE_FILE we'll check that it's
472	* not a directory (we are NOT checking whether it's a file).
473	*/
474	DECLHIDDEN(int) rtPathWin32MoveRename(const char pszSrc, const char pszDst, uint32_t fFlags, RTFMODE fFileType)
475	{
476	/*
477	* Convert the strings.
478	*/
479	PRTUTF16 pwszSrc;
480	int rc = RTStrToUtf16(pszSrc, &pwszSrc);
481	if (RT_SUCCESS(rc))
482	{
483	PRTUTF16 pwszDst;
484	rc = RTStrToUtf16(pszDst, &pwszDst);
485	if (RT_SUCCESS(rc))
486	{
487	/*
488	* Check object type if requested.
489	* This is open to race conditions.
490	*/
491	if (fFileType)
492	{
493	DWORD dwAttr = GetFileAttributesW(pwszSrc);
494	if (dwAttr == INVALID_FILE_ATTRIBUTES)
495	rc = RTErrConvertFromWin32(GetLastError());
496	else if (RTFS_IS_DIRECTORY(fFileType))
497	rc = dwAttr & FILE_ATTRIBUTE_DIRECTORY ? VINF_SUCCESS : VERR_NOT_A_DIRECTORY;
498	else
499	rc = dwAttr & FILE_ATTRIBUTE_DIRECTORY ? VERR_IS_A_DIRECTORY : VINF_SUCCESS;
500	}
501	if (RT_SUCCESS(rc))
502	{
503	if (MoveFileExW(pwszSrc, pwszDst, fFlags))
504	rc = VINF_SUCCESS;
505	else
506	{
507	DWORD Err = GetLastError();
508	rc = RTErrConvertFromWin32(Err);
509	Log(("MoveFileExW('%s', '%s', %#x, %RTfmode): fails with rc=%Rrc & lasterr=%d\n",
510	pszSrc, pszDst, fFlags, fFileType, rc, Err));
511	}
512	}
513	RTUtf16Free(pwszDst);
514	}
515	RTUtf16Free(pwszSrc);
516	}
517	return rc;
518	}
519
520
521	RTR3DECL(int) RTPathRename(const char pszSrc, const char pszDst, unsigned fRename)
522	{
523	/*
524	* Validate input.
525	*/
526	AssertMsgReturn(VALID_PTR(pszSrc), ("%p\n", pszSrc), VERR_INVALID_POINTER);
527	AssertMsgReturn(VALID_PTR(pszDst), ("%p\n", pszDst), VERR_INVALID_POINTER);
528	AssertMsgReturn(*pszSrc, ("%p\n", pszSrc), VERR_INVALID_PARAMETER);
529	AssertMsgReturn(*pszDst, ("%p\n", pszDst), VERR_INVALID_PARAMETER);
530	AssertMsgReturn(!(fRename & ~RTPATHRENAME_FLAGS_REPLACE), ("%#x\n", fRename), VERR_INVALID_PARAMETER);
531
532	/*
533	* Call the worker.
534	*/
535	int rc = rtPathWin32MoveRename(pszSrc, pszDst, fRename & RTPATHRENAME_FLAGS_REPLACE ? MOVEFILE_REPLACE_EXISTING : 0, 0);
536
537	LogFlow(("RTPathRename(%p:{%s}, %p:{%s}, %#x): returns %Rrc\n", pszSrc, pszSrc, pszDst, pszDst, fRename, rc));
538	return rc;
539	}
540
541
542	RTDECL(bool) RTPathExists(const char *pszPath)
543	{
544	return RTPathExistsEx(pszPath, RTPATH_F_FOLLOW_LINK);
545	}
546
547
548	RTDECL(bool) RTPathExistsEx(const char *pszPath, uint32_t fFlags)
549	{
550	/*
551	* Validate input.
552	*/
553	AssertPtrReturn(pszPath, false);
554	AssertReturn(*pszPath, false);
555	Assert(RTPATH_F_IS_VALID(fFlags, 0));
556
557	/*
558	* Try query file info.
559	*/
560	DWORD dwAttr;
561	PRTUTF16 pwszPath;
562	int rc = RTStrToUtf16(pszPath, &pwszPath);
563	if (RT_SUCCESS(rc))
564	{
565	dwAttr = GetFileAttributesW(pwszPath);
566	RTUtf16Free(pwszPath);
567	}
568	else
569	dwAttr = INVALID_FILE_ATTRIBUTES;
570	if (dwAttr == INVALID_FILE_ATTRIBUTES)
571	return false;
572
573	#ifdef FILE_ATTRIBUTE_REPARSE_POINT
574	if ( (fFlags & RTPATH_F_FOLLOW_LINK)
575	&& (dwAttr & FILE_ATTRIBUTE_REPARSE_POINT))
576	{
577	AssertFailed();
578	/** @todo Symlinks: RTPathExists+RTPathExistsEx is misbehaving on symbolic
579	* links on Windows. */
580	}
581	#endif
582
583	return true;
584	}
585
586
587	RTDECL(int) RTPathGetCurrent(char *pszPath, size_t cchPath)
588	{
589	int rc;
590
591	/*
592	* GetCurrentDirectory may in some cases omit the drive letter, according
593	* to MSDN, thus the GetFullPathName call.
594	*/
595	RTUTF16 wszCurPath[RTPATH_MAX];
596	if (GetCurrentDirectoryW(RTPATH_MAX, wszCurPath))
597	{
598	RTUTF16 wszFullPath[RTPATH_MAX];
599	if (GetFullPathNameW(wszCurPath, RTPATH_MAX, wszFullPath, NULL))
600	rc = RTUtf16ToUtf8Ex(&wszFullPath[0], RTSTR_MAX, &pszPath, cchPath, NULL);
601	else
602	rc = RTErrConvertFromWin32(GetLastError());
603	}
604	else
605	rc = RTErrConvertFromWin32(GetLastError());
606	return rc;
607	}
608
609
610	RTDECL(int) RTPathSetCurrent(const char *pszPath)
611	{
612	/*
613	* Validate input.
614	*/
615	AssertPtrReturn(pszPath, VERR_INVALID_POINTER);
616	AssertReturn(*pszPath, VERR_INVALID_PARAMETER);
617
618	/*
619	* This interface is almost identical to the Windows API.
620	*/
621	PRTUTF16 pwszPath;
622	int rc = RTStrToUtf16(pszPath, &pwszPath);
623	if (RT_SUCCESS(rc))
624	{
625	/** @todo improve the slash stripping a bit? */
626	size_t cwc = RTUtf16Len(pwszPath);
627	if ( cwc >= 2
628	&& ( pwszPath[cwc - 1] == L'/'
629	\|\| pwszPath[cwc - 1] == L'\\')
630	&& pwszPath[cwc - 2] != ':')
631	pwszPath[cwc - 1] = L'\0';
632
633	if (!SetCurrentDirectoryW(pwszPath))
634	rc = RTErrConvertFromWin32(GetLastError());
635
636	RTUtf16Free(pwszPath);
637	}
638	return rc;
639	}
640

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source: vbox/trunk/src/VBox/Runtime/r3/win/path-win.cpp@ 34002

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