fileio-win.cpp@ 77231

Last change on this file since 77231 was 77231, checked in by vboxsync, 6 years ago
IPRT: Return VERR_FILE_TOO_BIG if we exceed the FAT file limit while writing or when calling RTFileSetSize. (The previous IsBeyondLimit() code never ever worked AFAIK.)
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File size: 41.9 KB

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1	/* $Id: fileio-win.cpp 77231 2019-02-08 23:18:13Z vboxsync $ */
2	/** @file
3	* IPRT - File I/O, native implementation for the Windows host platform.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. 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_DIR
32	#ifndef _WIN32_WINNT
33	# define _WIN32_WINNT 0x0500
34	#endif
35	#include <iprt/nt/nt-and-windows.h>
36
37	#include <iprt/file.h>
38
39	#include <iprt/asm.h>
40	#include <iprt/assert.h>
41	#include <iprt/path.h>
42	#include <iprt/string.h>
43	#include <iprt/err.h>
44	#include <iprt/ldr.h>
45	#include <iprt/log.h>
46	#include "internal/file.h"
47	#include "internal/fs.h"
48	#include "internal/path.h"
49	#include "internal-r3-win.h" /* For g_enmWinVer + kRTWinOSType_XXX */
50
51
52	/*********************************************************************************************************************************
53	* Defined Constants And Macros *
54	*********************************************************************************************************************************/
55	typedef BOOL WINAPI FNVERIFYCONSOLEIOHANDLE(HANDLE);
56	typedef FNVERIFYCONSOLEIOHANDLE PFNVERIFYCONSOLEIOHANDLE; / No, nobody fell on the keyboard, really! */
57
58	/**
59	* This is wrapper around the ugly SetFilePointer api.
60	*
61	* It's equivalent to SetFilePointerEx which we so unfortunately cannot use because of
62	* it not being present in NT4 GA.
63	*
64	* @returns Success indicator. Extended error information obtainable using GetLastError().
65	* @param hFile Filehandle.
66	* @param offSeek Offset to seek.
67	* @param poffNew Where to store the new file offset. NULL allowed.
68	* @param uMethod Seek method. (The windows one!)
69	*/
70	DECLINLINE(bool) MySetFilePointer(RTFILE hFile, uint64_t offSeek, uint64_t *poffNew, unsigned uMethod)
71	{
72	bool fRc;
73	LARGE_INTEGER off;
74
75	off.QuadPart = offSeek;
76	#if 1
77	if (off.LowPart != INVALID_SET_FILE_POINTER)
78	{
79	off.LowPart = SetFilePointer((HANDLE)RTFileToNative(hFile), off.LowPart, &off.HighPart, uMethod);
80	fRc = off.LowPart != INVALID_SET_FILE_POINTER;
81	}
82	else
83	{
84	SetLastError(NO_ERROR);
85	off.LowPart = SetFilePointer((HANDLE)RTFileToNative(hFile), off.LowPart, &off.HighPart, uMethod);
86	fRc = GetLastError() == NO_ERROR;
87	}
88	#else
89	fRc = SetFilePointerEx((HANDLE)RTFileToNative(hFile), off, &off, uMethod);
90	#endif
91	if (fRc && poffNew)
92	*poffNew = off.QuadPart;
93	return fRc;
94	}
95
96
97	/**
98	* Helper for checking if a VERR_DISK_FULL isn't a VERR_FILE_TOO_BIG.
99	* @returns VERR_DISK_FULL or VERR_FILE_TOO_BIG.
100	*/
101	static int rtFileWinCheckIfDiskReallyFull(RTFILE hFile, uint64_t cbDesired)
102	{
103	/*
104	* Windows doesn't appear to have a way to query the file size limit of a
105	* file system, so we have to deduce the limit from the file system driver name.
106	* This means it will only work for known file systems.
107	*/
108	if (cbDesired >= _2G - 1)
109	{
110	uint64_t cbMaxFile = UINT64_MAX;
111	RTFSTYPE enmFsType;
112	int rc = rtNtQueryFsType((HANDLE)RTFileToNative(hFile), &enmFsType);
113	if (RT_SUCCESS(rc))
114	switch (enmFsType)
115	{
116	case RTFSTYPE_NTFS:
117	case RTFSTYPE_EXFAT:
118	case RTFSTYPE_UDF:
119	cbMaxFile = UINT64_C(0xffffffffffffffff); /* (May be limited by IFS.) */
120	break;
121
122	case RTFSTYPE_ISO9660:
123	cbMaxFile = 8 *_1T;
124	break;
125
126	case RTFSTYPE_FAT:
127	cbMaxFile = _4G;
128	break;
129
130	case RTFSTYPE_HPFS:
131	cbMaxFile = _2G;
132	break;
133
134	default:
135	break;
136	}
137	if (cbDesired >= cbMaxFile)
138	return VERR_FILE_TOO_BIG;
139	}
140	return VERR_DISK_FULL;
141	}
142
143
144	RTR3DECL(int) RTFileFromNative(PRTFILE pFile, RTHCINTPTR uNative)
145	{
146	HANDLE h = (HANDLE)uNative;
147	AssertCompile(sizeof(h) == sizeof(uNative));
148	if (h == INVALID_HANDLE_VALUE)
149	{
150	AssertMsgFailed(("%p\n", uNative));
151	*pFile = NIL_RTFILE;
152	return VERR_INVALID_HANDLE;
153	}
154	*pFile = (RTFILE)h;
155	return VINF_SUCCESS;
156	}
157
158
159	RTR3DECL(RTHCINTPTR) RTFileToNative(RTFILE hFile)
160	{
161	AssertReturn(hFile != NIL_RTFILE, (RTHCINTPTR)INVALID_HANDLE_VALUE);
162	return (RTHCINTPTR)hFile;
163	}
164
165
166	RTR3DECL(int) RTFileOpen(PRTFILE pFile, const char *pszFilename, uint64_t fOpen)
167	{
168	/*
169	* Validate input.
170	*/
171	if (!pFile)
172	{
173	AssertMsgFailed(("Invalid pFile\n"));
174	return VERR_INVALID_PARAMETER;
175	}
176	*pFile = NIL_RTFILE;
177	if (!pszFilename)
178	{
179	AssertMsgFailed(("Invalid pszFilename\n"));
180	return VERR_INVALID_PARAMETER;
181	}
182
183	/*
184	* Merge forced open flags and validate them.
185	*/
186	int rc = rtFileRecalcAndValidateFlags(&fOpen);
187	if (RT_FAILURE(rc))
188	return rc;
189
190	/*
191	* Determine disposition, access, share mode, creation flags, and security attributes
192	* for the CreateFile API call.
193	*/
194	DWORD dwCreationDisposition;
195	switch (fOpen & RTFILE_O_ACTION_MASK)
196	{
197	case RTFILE_O_OPEN:
198	dwCreationDisposition = fOpen & RTFILE_O_TRUNCATE ? TRUNCATE_EXISTING : OPEN_EXISTING;
199	break;
200	case RTFILE_O_OPEN_CREATE:
201	dwCreationDisposition = OPEN_ALWAYS;
202	break;
203	case RTFILE_O_CREATE:
204	dwCreationDisposition = CREATE_NEW;
205	break;
206	case RTFILE_O_CREATE_REPLACE:
207	dwCreationDisposition = CREATE_ALWAYS;
208	break;
209	default:
210	AssertMsgFailed(("Impossible fOpen=%#llx\n", fOpen));
211	return VERR_INVALID_PARAMETER;
212	}
213
214	DWORD dwDesiredAccess;
215	switch (fOpen & RTFILE_O_ACCESS_MASK)
216	{
217	case RTFILE_O_READ:
218	dwDesiredAccess = FILE_GENERIC_READ; /* RTFILE_O_APPEND is ignored. */
219	break;
220	case RTFILE_O_WRITE:
221	dwDesiredAccess = fOpen & RTFILE_O_APPEND
222	? FILE_GENERIC_WRITE & ~FILE_WRITE_DATA
223	: FILE_GENERIC_WRITE;
224	break;
225	case RTFILE_O_READWRITE:
226	dwDesiredAccess = fOpen & RTFILE_O_APPEND
227	? FILE_GENERIC_READ \| (FILE_GENERIC_WRITE & ~FILE_WRITE_DATA)
228	: FILE_GENERIC_READ \| FILE_GENERIC_WRITE;
229	break;
230	case RTFILE_O_ATTR_ONLY:
231	if (fOpen & RTFILE_O_ACCESS_ATTR_MASK)
232	{
233	dwDesiredAccess = 0;
234	break;
235	}
236	RT_FALL_THRU();
237	default:
238	AssertMsgFailed(("Impossible fOpen=%#llx\n", fOpen));
239	return VERR_INVALID_PARAMETER;
240	}
241	if (dwCreationDisposition == TRUNCATE_EXISTING)
242	/* Required for truncating the file (see MSDN), it is NOT part of FILE_GENERIC_WRITE. */
243	dwDesiredAccess \|= GENERIC_WRITE;
244
245	/* RTFileSetMode needs following rights as well. */
246	switch (fOpen & RTFILE_O_ACCESS_ATTR_MASK)
247	{
248	case RTFILE_O_ACCESS_ATTR_READ: dwDesiredAccess \|= FILE_READ_ATTRIBUTES \| SYNCHRONIZE; break;
249	case RTFILE_O_ACCESS_ATTR_WRITE: dwDesiredAccess \|= FILE_WRITE_ATTRIBUTES \| SYNCHRONIZE; break;
250	case RTFILE_O_ACCESS_ATTR_READWRITE: dwDesiredAccess \|= FILE_READ_ATTRIBUTES \| FILE_WRITE_ATTRIBUTES \| SYNCHRONIZE; break;
251	default:
252	/* Attributes access is the same as the file access. */
253	switch (fOpen & RTFILE_O_ACCESS_MASK)
254	{
255	case RTFILE_O_READ: dwDesiredAccess \|= FILE_READ_ATTRIBUTES \| SYNCHRONIZE; break;
256	case RTFILE_O_WRITE: dwDesiredAccess \|= FILE_WRITE_ATTRIBUTES \| SYNCHRONIZE; break;
257	case RTFILE_O_READWRITE: dwDesiredAccess \|= FILE_READ_ATTRIBUTES \| FILE_WRITE_ATTRIBUTES \| SYNCHRONIZE; break;
258	default:
259	AssertMsgFailed(("Impossible fOpen=%#llx\n", fOpen));
260	return VERR_INVALID_PARAMETER;
261	}
262	}
263
264	DWORD dwShareMode;
265	switch (fOpen & RTFILE_O_DENY_MASK)
266	{
267	case RTFILE_O_DENY_NONE: dwShareMode = FILE_SHARE_READ \| FILE_SHARE_WRITE; break;
268	case RTFILE_O_DENY_READ: dwShareMode = FILE_SHARE_WRITE; break;
269	case RTFILE_O_DENY_WRITE: dwShareMode = FILE_SHARE_READ; break;
270	case RTFILE_O_DENY_READWRITE: dwShareMode = 0; break;
271
272	case RTFILE_O_DENY_NOT_DELETE: dwShareMode = FILE_SHARE_DELETE \| FILE_SHARE_READ \| FILE_SHARE_WRITE; break;
273	case RTFILE_O_DENY_NOT_DELETE \| RTFILE_O_DENY_READ: dwShareMode = FILE_SHARE_DELETE \| FILE_SHARE_WRITE; break;
274	case RTFILE_O_DENY_NOT_DELETE \| RTFILE_O_DENY_WRITE: dwShareMode = FILE_SHARE_DELETE \| FILE_SHARE_READ; break;
275	case RTFILE_O_DENY_NOT_DELETE \| RTFILE_O_DENY_READWRITE:dwShareMode = FILE_SHARE_DELETE; break;
276	default:
277	AssertMsgFailed(("Impossible fOpen=%#llx\n", fOpen));
278	return VERR_INVALID_PARAMETER;
279	}
280
281	SECURITY_ATTRIBUTES SecurityAttributes;
282	PSECURITY_ATTRIBUTES pSecurityAttributes = NULL;
283	if (fOpen & RTFILE_O_INHERIT)
284	{
285	SecurityAttributes.nLength = sizeof(SecurityAttributes);
286	SecurityAttributes.lpSecurityDescriptor = NULL;
287	SecurityAttributes.bInheritHandle = TRUE;
288	pSecurityAttributes = &SecurityAttributes;
289	}
290
291	DWORD dwFlagsAndAttributes;
292	dwFlagsAndAttributes = FILE_ATTRIBUTE_NORMAL;
293	if (fOpen & RTFILE_O_WRITE_THROUGH)
294	dwFlagsAndAttributes \|= FILE_FLAG_WRITE_THROUGH;
295	if (fOpen & RTFILE_O_ASYNC_IO)
296	dwFlagsAndAttributes \|= FILE_FLAG_OVERLAPPED;
297	if (fOpen & RTFILE_O_NO_CACHE)
298	{
299	dwFlagsAndAttributes \|= FILE_FLAG_NO_BUFFERING;
300	dwDesiredAccess &= ~FILE_APPEND_DATA;
301	}
302
303	/*
304	* Open/Create the file.
305	*/
306	PRTUTF16 pwszFilename;
307	rc = RTPathWinFromUtf8(&pwszFilename, pszFilename, 0 /fFlags/);
308	if (RT_SUCCESS(rc))
309	{
310	HANDLE hFile = CreateFileW(pwszFilename,
311	dwDesiredAccess,
312	dwShareMode,
313	pSecurityAttributes,
314	dwCreationDisposition,
315	dwFlagsAndAttributes,
316	NULL);
317	if (hFile != INVALID_HANDLE_VALUE)
318	{
319	bool fCreated = dwCreationDisposition == CREATE_ALWAYS
320	\|\| dwCreationDisposition == CREATE_NEW
321	\|\| (dwCreationDisposition == OPEN_ALWAYS && GetLastError() == 0);
322
323	/*
324	* Turn off indexing of directory through Windows Indexing Service.
325	*/
326	if ( fCreated
327	&& (fOpen & RTFILE_O_NOT_CONTENT_INDEXED))
328	{
329	if (!SetFileAttributesW(pwszFilename, FILE_ATTRIBUTE_NOT_CONTENT_INDEXED))
330	rc = RTErrConvertFromWin32(GetLastError());
331	}
332	/*
333	* Do we need to truncate the file?
334	*/
335	else if ( !fCreated
336	&& (fOpen & (RTFILE_O_TRUNCATE \| RTFILE_O_ACTION_MASK))
337	== (RTFILE_O_TRUNCATE \| RTFILE_O_OPEN_CREATE))
338	{
339	if (!SetEndOfFile(hFile))
340	rc = RTErrConvertFromWin32(GetLastError());
341	}
342	if (RT_SUCCESS(rc))
343	{
344	*pFile = (RTFILE)hFile;
345	Assert((HANDLE)*pFile == hFile);
346	RTPathWinFree(pwszFilename);
347	return VINF_SUCCESS;
348	}
349
350	CloseHandle(hFile);
351	}
352	else
353	rc = RTErrConvertFromWin32(GetLastError());
354	RTPathWinFree(pwszFilename);
355	}
356	return rc;
357	}
358
359
360	RTR3DECL(int) RTFileOpenBitBucket(PRTFILE phFile, uint64_t fAccess)
361	{
362	AssertReturn( fAccess == RTFILE_O_READ
363	\|\| fAccess == RTFILE_O_WRITE
364	\|\| fAccess == RTFILE_O_READWRITE,
365	VERR_INVALID_PARAMETER);
366	return RTFileOpen(phFile, "NUL", fAccess \| RTFILE_O_DENY_NONE \| RTFILE_O_OPEN);
367	}
368
369
370	RTR3DECL(int) RTFileClose(RTFILE hFile)
371	{
372	if (hFile == NIL_RTFILE)
373	return VINF_SUCCESS;
374	if (CloseHandle((HANDLE)RTFileToNative(hFile)))
375	return VINF_SUCCESS;
376	return RTErrConvertFromWin32(GetLastError());
377	}
378
379
380	RTFILE rtFileGetStandard(RTHANDLESTD enmStdHandle)
381	{
382	DWORD dwStdHandle;
383	switch (enmStdHandle)
384	{
385	case RTHANDLESTD_INPUT: dwStdHandle = STD_INPUT_HANDLE; break;
386	case RTHANDLESTD_OUTPUT: dwStdHandle = STD_OUTPUT_HANDLE; break;
387	case RTHANDLESTD_ERROR: dwStdHandle = STD_ERROR_HANDLE; break;
388	default:
389	AssertFailedReturn(NIL_RTFILE);
390	}
391
392	HANDLE hNative = GetStdHandle(dwStdHandle);
393	if (hNative == INVALID_HANDLE_VALUE)
394	return NIL_RTFILE;
395
396	RTFILE hFile = (RTFILE)(uintptr_t)hNative;
397	AssertReturn((HANDLE)(uintptr_t)hFile == hNative, NIL_RTFILE);
398	return hFile;
399	}
400
401
402	RTR3DECL(int) RTFileSeek(RTFILE hFile, int64_t offSeek, unsigned uMethod, uint64_t *poffActual)
403	{
404	static ULONG aulSeekRecode[] =
405	{
406	FILE_BEGIN,
407	FILE_CURRENT,
408	FILE_END,
409	};
410
411	/*
412	* Validate input.
413	*/
414	if (uMethod > RTFILE_SEEK_END)
415	{
416	AssertMsgFailed(("Invalid uMethod=%d\n", uMethod));
417	return VERR_INVALID_PARAMETER;
418	}
419
420	/*
421	* Execute the seek.
422	*/
423	if (MySetFilePointer(hFile, offSeek, poffActual, aulSeekRecode[uMethod]))
424	return VINF_SUCCESS;
425	return RTErrConvertFromWin32(GetLastError());
426	}
427
428
429	RTR3DECL(int) RTFileRead(RTFILE hFile, void pvBuf, size_t cbToRead, size_t pcbRead)
430	{
431	if (cbToRead <= 0)
432	{
433	if (pcbRead)
434	*pcbRead = 0;
435	return VINF_SUCCESS;
436	}
437	ULONG cbToReadAdj = (ULONG)cbToRead;
438	AssertReturn(cbToReadAdj == cbToRead, VERR_NUMBER_TOO_BIG);
439
440	ULONG cbRead = 0;
441	if (ReadFile((HANDLE)RTFileToNative(hFile), pvBuf, cbToReadAdj, &cbRead, NULL))
442	{
443	if (pcbRead)
444	/* Caller can handle partial reads. */
445	*pcbRead = cbRead;
446	else
447	{
448	/* Caller expects everything to be read. */
449	while (cbToReadAdj > cbRead)
450	{
451	ULONG cbReadPart = 0;
452	if (!ReadFile((HANDLE)RTFileToNative(hFile), (char*)pvBuf + cbRead, cbToReadAdj - cbRead, &cbReadPart, NULL))
453	return RTErrConvertFromWin32(GetLastError());
454	if (cbReadPart == 0)
455	return VERR_EOF;
456	cbRead += cbReadPart;
457	}
458	}
459	return VINF_SUCCESS;
460	}
461
462	/*
463	* If it's a console, we might bump into out of memory conditions in the
464	* ReadConsole call.
465	*/
466	DWORD dwErr = GetLastError();
467	if (dwErr == ERROR_NOT_ENOUGH_MEMORY)
468	{
469	ULONG cbChunk = cbToReadAdj / 2;
470	if (cbChunk > 16*_1K)
471	cbChunk = 16*_1K;
472	else
473	cbChunk = RT_ALIGN_32(cbChunk, 256);
474
475	cbRead = 0;
476	while (cbToReadAdj > cbRead)
477	{
478	ULONG cbToRead = RT_MIN(cbChunk, cbToReadAdj - cbRead);
479	ULONG cbReadPart = 0;
480	if (!ReadFile((HANDLE)RTFileToNative(hFile), (char *)pvBuf + cbRead, cbToRead, &cbReadPart, NULL))
481	{
482	/* If we failed because the buffer is too big, shrink it and
483	try again. */
484	dwErr = GetLastError();
485	if ( dwErr == ERROR_NOT_ENOUGH_MEMORY
486	&& cbChunk > 8)
487	{
488	cbChunk /= 2;
489	continue;
490	}
491	return RTErrConvertFromWin32(dwErr);
492	}
493	cbRead += cbReadPart;
494
495	/* Return if the caller can handle partial reads, otherwise try
496	fill the buffer all the way up. */
497	if (pcbRead)
498	{
499	*pcbRead = cbRead;
500	break;
501	}
502	if (cbReadPart == 0)
503	return VERR_EOF;
504	}
505	return VINF_SUCCESS;
506	}
507
508	return RTErrConvertFromWin32(dwErr);
509	}
510
511
512	RTDECL(int) RTFileReadAt(RTFILE hFile, RTFOFF off, void pvBuf, size_t cbToRead, size_t pcbRead)
513	{
514	ULONG cbToReadAdj = (ULONG)cbToRead;
515	AssertReturn(cbToReadAdj == cbToRead, VERR_NUMBER_TOO_BIG);
516
517	OVERLAPPED Overlapped;
518	Overlapped.Offset = (uint32_t)off;
519	Overlapped.OffsetHigh = (uint32_t)(off >> 32);
520	Overlapped.hEvent = NULL;
521	Overlapped.Internal = 0;
522	Overlapped.InternalHigh = 0;
523
524	ULONG cbRead = 0;
525	if (ReadFile((HANDLE)RTFileToNative(hFile), pvBuf, cbToReadAdj, &cbRead, &Overlapped))
526	{
527	if (pcbRead)
528	/* Caller can handle partial reads. */
529	*pcbRead = cbRead;
530	else
531	{
532	/* Caller expects everything to be read. */
533	while (cbToReadAdj > cbRead)
534	{
535	Overlapped.Offset = (uint32_t)(off + cbRead);
536	Overlapped.OffsetHigh = (uint32_t)((off + cbRead) >> 32);
537	Overlapped.hEvent = NULL;
538	Overlapped.Internal = 0;
539	Overlapped.InternalHigh = 0;
540
541	ULONG cbReadPart = 0;
542	if (!ReadFile((HANDLE)RTFileToNative(hFile), (char *)pvBuf + cbRead, cbToReadAdj - cbRead,
543	&cbReadPart, &Overlapped))
544	return RTErrConvertFromWin32(GetLastError());
545	if (cbReadPart == 0)
546	return VERR_EOF;
547	cbRead += cbReadPart;
548	}
549	}
550	return VINF_SUCCESS;
551	}
552	return RTErrConvertFromWin32(GetLastError());
553	}
554
555
556	RTR3DECL(int) RTFileWrite(RTFILE hFile, const void pvBuf, size_t cbToWrite, size_t pcbWritten)
557	{
558	if (cbToWrite <= 0)
559	return VINF_SUCCESS;
560	ULONG const cbToWriteAdj = (ULONG)cbToWrite;
561	AssertReturn(cbToWriteAdj == cbToWrite, VERR_NUMBER_TOO_BIG);
562
563	ULONG cbWritten = 0;
564	if (WriteFile((HANDLE)RTFileToNative(hFile), pvBuf, cbToWriteAdj, &cbWritten, NULL))
565	{
566	if (pcbWritten)
567	/* Caller can handle partial writes. */
568	pcbWritten = RT_MIN(cbWritten, cbToWriteAdj); / paranoia^3 */
569	else
570	{
571	/* Caller expects everything to be written. */
572	while (cbWritten < cbToWriteAdj)
573	{
574	ULONG cbWrittenPart = 0;
575	if (!WriteFile((HANDLE)RTFileToNative(hFile), (char*)pvBuf + cbWritten,
576	cbToWriteAdj - cbWritten, &cbWrittenPart, NULL))
577	{
578	int rc = RTErrConvertFromWin32(GetLastError());
579	if (rc == VERR_DISK_FULL)
580	rc = rtFileWinCheckIfDiskReallyFull(hFile, RTFileTell(hFile) + cbToWriteAdj - cbWritten);
581	return rc;
582	}
583	if (cbWrittenPart == 0)
584	return VERR_WRITE_ERROR;
585	cbWritten += cbWrittenPart;
586	}
587	}
588	return VINF_SUCCESS;
589	}
590
591	/*
592	* If it's a console, we might bump into out of memory conditions in the
593	* WriteConsole call.
594	*/
595	DWORD dwErr = GetLastError();
596	if (dwErr == ERROR_NOT_ENOUGH_MEMORY)
597	{
598	ULONG cbChunk = cbToWriteAdj / 2;
599	if (cbChunk > _32K)
600	cbChunk = _32K;
601	else
602	cbChunk = RT_ALIGN_32(cbChunk, 256);
603
604	cbWritten = 0;
605	while (cbWritten < cbToWriteAdj)
606	{
607	ULONG cbToWrite = RT_MIN(cbChunk, cbToWriteAdj - cbWritten);
608	ULONG cbWrittenPart = 0;
609	if (!WriteFile((HANDLE)RTFileToNative(hFile), (const char *)pvBuf + cbWritten, cbToWrite, &cbWrittenPart, NULL))
610	{
611	/* If we failed because the buffer is too big, shrink it and
612	try again. */
613	dwErr = GetLastError();
614	if ( dwErr == ERROR_NOT_ENOUGH_MEMORY
615	&& cbChunk > 8)
616	{
617	cbChunk /= 2;
618	continue;
619	}
620	int rc = RTErrConvertFromWin32(dwErr);
621	if (rc == VERR_DISK_FULL)
622	rc = rtFileWinCheckIfDiskReallyFull(hFile, RTFileTell(hFile) + cbToWrite);
623	return rc;
624	}
625	cbWritten += cbWrittenPart;
626
627	/* Return if the caller can handle partial writes, otherwise try
628	write out everything. */
629	if (pcbWritten)
630	{
631	pcbWritten = RT_MIN(cbWritten, cbToWriteAdj); / paranoia^3 */
632	break;
633	}
634	if (cbWrittenPart == 0)
635	return VERR_WRITE_ERROR;
636	}
637	return VINF_SUCCESS;
638	}
639
640	int rc = RTErrConvertFromWin32(dwErr);
641	if (rc == VERR_DISK_FULL)
642	rc = rtFileWinCheckIfDiskReallyFull(hFile, RTFileTell(hFile) + cbToWriteAdj);
643	return rc;
644	}
645
646
647	RTDECL(int) RTFileWriteAt(RTFILE hFile, RTFOFF off, const void pvBuf, size_t cbToWrite, size_t pcbWritten)
648	{
649	ULONG const cbToWriteAdj = (ULONG)cbToWrite;
650	AssertReturn(cbToWriteAdj == cbToWrite, VERR_NUMBER_TOO_BIG);
651
652	OVERLAPPED Overlapped;
653	Overlapped.Offset = (uint32_t)off;
654	Overlapped.OffsetHigh = (uint32_t)(off >> 32);
655	Overlapped.hEvent = NULL;
656	Overlapped.Internal = 0;
657	Overlapped.InternalHigh = 0;
658
659	ULONG cbWritten = 0;
660	if (WriteFile((HANDLE)RTFileToNative(hFile), pvBuf, cbToWriteAdj, &cbWritten, &Overlapped))
661	{
662	if (pcbWritten)
663	/* Caller can handle partial writes. */
664	pcbWritten = RT_MIN(cbWritten, cbToWriteAdj); / paranoia^3 */
665	else
666	{
667	/* Caller expects everything to be written. */
668	while (cbWritten < cbToWriteAdj)
669	{
670	Overlapped.Offset = (uint32_t)(off + cbWritten);
671	Overlapped.OffsetHigh = (uint32_t)((off + cbWritten) >> 32);
672	Overlapped.hEvent = NULL;
673	Overlapped.Internal = 0;
674	Overlapped.InternalHigh = 0;
675
676	ULONG cbWrittenPart = 0;
677	if (!WriteFile((HANDLE)RTFileToNative(hFile), (char*)pvBuf + cbWritten,
678	cbToWriteAdj - cbWritten, &cbWrittenPart, &Overlapped))
679	{
680	int rc = RTErrConvertFromWin32(GetLastError());
681	if (rc == VERR_DISK_FULL)
682	rc = rtFileWinCheckIfDiskReallyFull(hFile, off + cbToWriteAdj);
683	return rc;
684	}
685	if (cbWrittenPart == 0)
686	return VERR_WRITE_ERROR;
687	cbWritten += cbWrittenPart;
688	}
689	}
690	return VINF_SUCCESS;
691	}
692
693	int rc = RTErrConvertFromWin32(GetLastError());
694	if (rc == VERR_DISK_FULL)
695	rc = rtFileWinCheckIfDiskReallyFull(hFile, off + cbToWriteAdj);
696	return rc;
697	}
698
699
700	RTR3DECL(int) RTFileFlush(RTFILE hFile)
701	{
702	if (!FlushFileBuffers((HANDLE)RTFileToNative(hFile)))
703	{
704	int rc = GetLastError();
705	Log(("FlushFileBuffers failed with %d\n", rc));
706	return RTErrConvertFromWin32(rc);
707	}
708	return VINF_SUCCESS;
709	}
710
711
712	RTR3DECL(int) RTFileSetSize(RTFILE hFile, uint64_t cbSize)
713	{
714	/*
715	* Get current file pointer.
716	*/
717	int rc;
718	uint64_t offCurrent;
719	if (MySetFilePointer(hFile, 0, &offCurrent, FILE_CURRENT))
720	{
721	/*
722	* Set new file pointer.
723	*/
724	if (MySetFilePointer(hFile, cbSize, NULL, FILE_BEGIN))
725	{
726	/* set file pointer */
727	if (SetEndOfFile((HANDLE)RTFileToNative(hFile)))
728	{
729	/*
730	* Restore file pointer and return.
731	* If the old pointer was beyond the new file end, ignore failure.
732	*/
733	if ( MySetFilePointer(hFile, offCurrent, NULL, FILE_BEGIN)
734	\|\| offCurrent > cbSize)
735	return VINF_SUCCESS;
736	}
737
738	/*
739	* Failed, try restoring the file pointer.
740	*/
741	rc = GetLastError();
742	MySetFilePointer(hFile, offCurrent, NULL, FILE_BEGIN);
743
744	if (rc == ERROR_DISK_FULL)
745	return rtFileWinCheckIfDiskReallyFull(hFile, cbSize);
746	}
747	else
748	rc = GetLastError();
749	}
750	else
751	rc = GetLastError();
752
753	return RTErrConvertFromWin32(rc);
754	}
755
756
757	RTR3DECL(int) RTFileGetSize(RTFILE hFile, uint64_t *pcbSize)
758	{
759	/*
760	* GetFileSize works for most handles.
761	*/
762	ULARGE_INTEGER Size;
763	Size.LowPart = GetFileSize((HANDLE)RTFileToNative(hFile), &Size.HighPart);
764	if (Size.LowPart != INVALID_FILE_SIZE)
765	{
766	*pcbSize = Size.QuadPart;
767	return VINF_SUCCESS;
768	}
769	int rc = RTErrConvertFromWin32(GetLastError());
770
771	/*
772	* Could it be a volume or a disk?
773	*/
774	DISK_GEOMETRY DriveGeo;
775	DWORD cbDriveGeo;
776	if (DeviceIoControl((HANDLE)RTFileToNative(hFile),
777	IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0,
778	&DriveGeo, sizeof(DriveGeo), &cbDriveGeo, NULL))
779	{
780	if ( DriveGeo.MediaType == FixedMedia
781	\|\| DriveGeo.MediaType == RemovableMedia)
782	{
783	*pcbSize = DriveGeo.Cylinders.QuadPart
784	* DriveGeo.TracksPerCylinder
785	* DriveGeo.SectorsPerTrack
786	* DriveGeo.BytesPerSector;
787
788	GET_LENGTH_INFORMATION DiskLenInfo;
789	DWORD Ignored;
790	if (DeviceIoControl((HANDLE)RTFileToNative(hFile),
791	IOCTL_DISK_GET_LENGTH_INFO, NULL, 0,
792	&DiskLenInfo, sizeof(DiskLenInfo), &Ignored, (LPOVERLAPPED)NULL))
793	{
794	/* IOCTL_DISK_GET_LENGTH_INFO is supported -- override cbSize. */
795	*pcbSize = DiskLenInfo.Length.QuadPart;
796	}
797	return VINF_SUCCESS;
798	}
799	}
800
801	/*
802	* Return the GetFileSize result if not a volume/disk.
803	*/
804	return rc;
805	}
806
807
808	RTR3DECL(int) RTFileGetMaxSizeEx(RTFILE hFile, PRTFOFF pcbMax)
809	{
810	/** @todo r=bird:
811	* We might have to make this code OS version specific... In the worse
812	* case, we'll have to try GetVolumeInformationByHandle on vista and fall
813	* back on NtQueryVolumeInformationFile(,,,, FileFsAttributeInformation)
814	* else where, and check for known file system names. (For LAN shares we'll
815	* have to figure out the remote file system.) */
816	RT_NOREF_PV(hFile); RT_NOREF_PV(pcbMax);
817	return VERR_NOT_IMPLEMENTED;
818	}
819
820
821	RTR3DECL(bool) RTFileIsValid(RTFILE hFile)
822	{
823	if (hFile != NIL_RTFILE)
824	{
825	DWORD dwType = GetFileType((HANDLE)RTFileToNative(hFile));
826	switch (dwType)
827	{
828	case FILE_TYPE_CHAR:
829	case FILE_TYPE_DISK:
830	case FILE_TYPE_PIPE:
831	case FILE_TYPE_REMOTE:
832	return true;
833
834	case FILE_TYPE_UNKNOWN:
835	if (GetLastError() == NO_ERROR)
836	return true;
837	break;
838
839	default:
840	break;
841	}
842	}
843	return false;
844	}
845
846
847	#define LOW_DWORD(u64) ((DWORD)u64)
848	#define HIGH_DWORD(u64) (((DWORD *)&u64)[1])
849
850	RTR3DECL(int) RTFileLock(RTFILE hFile, unsigned fLock, int64_t offLock, uint64_t cbLock)
851	{
852	Assert(offLock >= 0);
853
854	/* Check arguments. */
855	if (fLock & ~RTFILE_LOCK_MASK)
856	{
857	AssertMsgFailed(("Invalid fLock=%08X\n", fLock));
858	return VERR_INVALID_PARAMETER;
859	}
860
861	/* Prepare flags. */
862	Assert(RTFILE_LOCK_WRITE);
863	DWORD dwFlags = (fLock & RTFILE_LOCK_WRITE) ? LOCKFILE_EXCLUSIVE_LOCK : 0;
864	Assert(RTFILE_LOCK_WAIT);
865	if (!(fLock & RTFILE_LOCK_WAIT))
866	dwFlags \|= LOCKFILE_FAIL_IMMEDIATELY;
867
868	/* Windows structure. */
869	OVERLAPPED Overlapped;
870	memset(&Overlapped, 0, sizeof(Overlapped));
871	Overlapped.Offset = LOW_DWORD(offLock);
872	Overlapped.OffsetHigh = HIGH_DWORD(offLock);
873
874	/* Note: according to Microsoft, LockFileEx API call is available starting from NT 3.5 */
875	if (LockFileEx((HANDLE)RTFileToNative(hFile), dwFlags, 0, LOW_DWORD(cbLock), HIGH_DWORD(cbLock), &Overlapped))
876	return VINF_SUCCESS;
877
878	return RTErrConvertFromWin32(GetLastError());
879	}
880
881
882	RTR3DECL(int) RTFileChangeLock(RTFILE hFile, unsigned fLock, int64_t offLock, uint64_t cbLock)
883	{
884	Assert(offLock >= 0);
885
886	/* Check arguments. */
887	if (fLock & ~RTFILE_LOCK_MASK)
888	{
889	AssertMsgFailed(("Invalid fLock=%08X\n", fLock));
890	return VERR_INVALID_PARAMETER;
891	}
892
893	/* Remove old lock. */
894	int rc = RTFileUnlock(hFile, offLock, cbLock);
895	if (RT_FAILURE(rc))
896	return rc;
897
898	/* Set new lock. */
899	rc = RTFileLock(hFile, fLock, offLock, cbLock);
900	if (RT_SUCCESS(rc))
901	return rc;
902
903	/* Try to restore old lock. */
904	unsigned fLockOld = (fLock & RTFILE_LOCK_WRITE) ? fLock & ~RTFILE_LOCK_WRITE : fLock \| RTFILE_LOCK_WRITE;
905	rc = RTFileLock(hFile, fLockOld, offLock, cbLock);
906	if (RT_SUCCESS(rc))
907	return VERR_FILE_LOCK_VIOLATION;
908	else
909	return VERR_FILE_LOCK_LOST;
910	}
911
912
913	RTR3DECL(int) RTFileUnlock(RTFILE hFile, int64_t offLock, uint64_t cbLock)
914	{
915	Assert(offLock >= 0);
916
917	if (UnlockFile((HANDLE)RTFileToNative(hFile),
918	LOW_DWORD(offLock), HIGH_DWORD(offLock),
919	LOW_DWORD(cbLock), HIGH_DWORD(cbLock)))
920	return VINF_SUCCESS;
921
922	return RTErrConvertFromWin32(GetLastError());
923	}
924
925
926
927	RTR3DECL(int) RTFileQueryInfo(RTFILE hFile, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
928	{
929	/*
930	* Validate input.
931	*/
932	if (hFile == NIL_RTFILE)
933	{
934	AssertMsgFailed(("Invalid hFile=%RTfile\n", hFile));
935	return VERR_INVALID_PARAMETER;
936	}
937	if (!pObjInfo)
938	{
939	AssertMsgFailed(("Invalid pObjInfo=%p\n", pObjInfo));
940	return VERR_INVALID_PARAMETER;
941	}
942	if ( enmAdditionalAttribs < RTFSOBJATTRADD_NOTHING
943	\|\| enmAdditionalAttribs > RTFSOBJATTRADD_LAST)
944	{
945	AssertMsgFailed(("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs));
946	return VERR_INVALID_PARAMETER;
947	}
948
949	/*
950	* Query file info.
951	*/
952	HANDLE hHandle = (HANDLE)RTFileToNative(hFile);
953	#if 1
954	uint64_t auBuf[168 / sizeof(uint64_t)]; /* Missing FILE_ALL_INFORMATION here. */
955	int rc = rtPathNtQueryInfoFromHandle(hFile, auBuf, sizeof(auBuf), pObjInfo, enmAdditionalAttribs, NULL, 0);
956	if (RT_SUCCESS(rc))
957	return rc;
958
959	/*
960	* Console I/O handles make trouble here. On older windows versions they
961	* end up with ERROR_INVALID_HANDLE when handed to the above API, while on
962	* more recent ones they cause different errors to appear.
963	*
964	* Thus, we must ignore the latter and doubly verify invalid handle claims.
965	* We use the undocumented VerifyConsoleIoHandle to do this, falling back on
966	* GetFileType should it not be there.
967	*/
968	if ( rc == VERR_INVALID_HANDLE
969	\|\| rc == VERR_ACCESS_DENIED
970	\|\| rc == VERR_UNEXPECTED_FS_OBJ_TYPE)
971	{
972	static PFNVERIFYCONSOLEIOHANDLE s_pfnVerifyConsoleIoHandle = NULL;
973	static bool volatile s_fInitialized = false;
974	PFNVERIFYCONSOLEIOHANDLE pfnVerifyConsoleIoHandle;
975	if (s_fInitialized)
976	pfnVerifyConsoleIoHandle = s_pfnVerifyConsoleIoHandle;
977	else
978	{
979	pfnVerifyConsoleIoHandle = (PFNVERIFYCONSOLEIOHANDLE)RTLdrGetSystemSymbol("kernel32.dll", "VerifyConsoleIoHandle");
980	ASMAtomicWriteBool(&s_fInitialized, true);
981	}
982	if ( pfnVerifyConsoleIoHandle
983	? !pfnVerifyConsoleIoHandle(hHandle)
984	: GetFileType(hHandle) == FILE_TYPE_UNKNOWN && GetLastError() != NO_ERROR)
985	return VERR_INVALID_HANDLE;
986	}
987	/*
988	* On Windows 10 and (hopefully) 8.1 we get ERROR_INVALID_FUNCTION with console
989	* I/O handles and null device handles. We must ignore these just like the
990	* above invalid handle error.
991	*/
992	else if (rc != VERR_INVALID_FUNCTION && rc != VERR_IO_BAD_COMMAND)
993	return rc;
994
995	RT_ZERO(*pObjInfo);
996	pObjInfo->Attr.enmAdditional = enmAdditionalAttribs;
997	pObjInfo->Attr.fMode = rtFsModeFromDos(RTFS_DOS_NT_DEVICE, "", 0, 0);
998	return VINF_SUCCESS;
999	#else
1000
1001	BY_HANDLE_FILE_INFORMATION Data;
1002	if (!GetFileInformationByHandle(hHandle, &Data))
1003	{
1004	/*
1005	* Console I/O handles make trouble here. On older windows versions they
1006	* end up with ERROR_INVALID_HANDLE when handed to the above API, while on
1007	* more recent ones they cause different errors to appear.
1008	*
1009	* Thus, we must ignore the latter and doubly verify invalid handle claims.
1010	* We use the undocumented VerifyConsoleIoHandle to do this, falling back on
1011	* GetFileType should it not be there.
1012	*/
1013	DWORD dwErr = GetLastError();
1014	if (dwErr == ERROR_INVALID_HANDLE)
1015	{
1016	static PFNVERIFYCONSOLEIOHANDLE s_pfnVerifyConsoleIoHandle = NULL;
1017	static bool volatile s_fInitialized = false;
1018	PFNVERIFYCONSOLEIOHANDLE pfnVerifyConsoleIoHandle;
1019	if (s_fInitialized)
1020	pfnVerifyConsoleIoHandle = s_pfnVerifyConsoleIoHandle;
1021	else
1022	{
1023	pfnVerifyConsoleIoHandle = (PFNVERIFYCONSOLEIOHANDLE)RTLdrGetSystemSymbol("kernel32.dll", "VerifyConsoleIoHandle");
1024	ASMAtomicWriteBool(&s_fInitialized, true);
1025	}
1026	if ( pfnVerifyConsoleIoHandle
1027	? !pfnVerifyConsoleIoHandle(hHandle)
1028	: GetFileType(hHandle) == FILE_TYPE_UNKNOWN && GetLastError() != NO_ERROR)
1029	return VERR_INVALID_HANDLE;
1030	}
1031	/*
1032	* On Windows 10 and (hopefully) 8.1 we get ERROR_INVALID_FUNCTION with console I/O
1033	* handles. We must ignore these just like the above invalid handle error.
1034	*/
1035	else if (dwErr != ERROR_INVALID_FUNCTION)
1036	return RTErrConvertFromWin32(dwErr);
1037
1038	RT_ZERO(Data);
1039	Data.dwFileAttributes = RTFS_DOS_NT_DEVICE;
1040	}
1041
1042	/*
1043	* Setup the returned data.
1044	*/
1045	pObjInfo->cbObject = ((uint64_t)Data.nFileSizeHigh << 32)
1046	\| (uint64_t)Data.nFileSizeLow;
1047	pObjInfo->cbAllocated = pObjInfo->cbObject;
1048
1049	Assert(sizeof(uint64_t) == sizeof(Data.ftCreationTime));
1050	RTTimeSpecSetNtTime(&pObjInfo->BirthTime, (uint64_t )&Data.ftCreationTime);
1051	RTTimeSpecSetNtTime(&pObjInfo->AccessTime, (uint64_t )&Data.ftLastAccessTime);
1052	RTTimeSpecSetNtTime(&pObjInfo->ModificationTime, (uint64_t )&Data.ftLastWriteTime);
1053	pObjInfo->ChangeTime = pObjInfo->ModificationTime;
1054
1055	pObjInfo->Attr.fMode = rtFsModeFromDos((Data.dwFileAttributes << RTFS_DOS_SHIFT) & RTFS_DOS_MASK_NT, "", 0,
1056	RTFSMODE_SYMLINK_REPARSE_TAG /* (symlink or not, doesn't usually matter here) */);
1057
1058	/*
1059	* Requested attributes (we cannot provide anything actually).
1060	*/
1061	switch (enmAdditionalAttribs)
1062	{
1063	case RTFSOBJATTRADD_NOTHING:
1064	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_NOTHING;
1065	break;
1066
1067	case RTFSOBJATTRADD_UNIX:
1068	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX;
1069	pObjInfo->Attr.u.Unix.uid = ~0U;
1070	pObjInfo->Attr.u.Unix.gid = ~0U;
1071	pObjInfo->Attr.u.Unix.cHardlinks = Data.nNumberOfLinks ? Data.nNumberOfLinks : 1;
1072	pObjInfo->Attr.u.Unix.INodeIdDevice = Data.dwVolumeSerialNumber;
1073	pObjInfo->Attr.u.Unix.INodeId = RT_MAKE_U64(Data.nFileIndexLow, Data.nFileIndexHigh);
1074	pObjInfo->Attr.u.Unix.fFlags = 0;
1075	pObjInfo->Attr.u.Unix.GenerationId = 0;
1076	pObjInfo->Attr.u.Unix.Device = 0;
1077	break;
1078
1079	case RTFSOBJATTRADD_UNIX_OWNER:
1080	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX_OWNER;
1081	pObjInfo->Attr.u.UnixOwner.uid = ~0U;
1082	pObjInfo->Attr.u.UnixOwner.szName[0] = '\0'; /** @todo return something sensible here. */
1083	break;
1084
1085	case RTFSOBJATTRADD_UNIX_GROUP:
1086	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_UNIX_GROUP;
1087	pObjInfo->Attr.u.UnixGroup.gid = ~0U;
1088	pObjInfo->Attr.u.UnixGroup.szName[0] = '\0';
1089	break;
1090
1091	case RTFSOBJATTRADD_EASIZE:
1092	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
1093	pObjInfo->Attr.u.EASize.cb = 0;
1094	break;
1095
1096	default:
1097	AssertMsgFailed(("Impossible!\n"));
1098	return VERR_INTERNAL_ERROR;
1099	}
1100
1101	return VINF_SUCCESS;
1102	#endif
1103	}
1104
1105
1106	RTR3DECL(int) RTFileSetTimes(RTFILE hFile, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
1107	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
1108	{
1109	RT_NOREF_PV(pChangeTime); /* Not exposed thru the windows API we're using. */
1110
1111	if (!pAccessTime && !pModificationTime && !pBirthTime)
1112	return VINF_SUCCESS; /* NOP */
1113
1114	FILETIME CreationTimeFT;
1115	PFILETIME pCreationTimeFT = NULL;
1116	if (pBirthTime)
1117	pCreationTimeFT = RTTimeSpecGetNtFileTime(pBirthTime, &CreationTimeFT);
1118
1119	FILETIME LastAccessTimeFT;
1120	PFILETIME pLastAccessTimeFT = NULL;
1121	if (pAccessTime)
1122	pLastAccessTimeFT = RTTimeSpecGetNtFileTime(pAccessTime, &LastAccessTimeFT);
1123
1124	FILETIME LastWriteTimeFT;
1125	PFILETIME pLastWriteTimeFT = NULL;
1126	if (pModificationTime)
1127	pLastWriteTimeFT = RTTimeSpecGetNtFileTime(pModificationTime, &LastWriteTimeFT);
1128
1129	int rc = VINF_SUCCESS;
1130	if (!SetFileTime((HANDLE)RTFileToNative(hFile), pCreationTimeFT, pLastAccessTimeFT, pLastWriteTimeFT))
1131	{
1132	DWORD Err = GetLastError();
1133	rc = RTErrConvertFromWin32(Err);
1134	Log(("RTFileSetTimes(%RTfile, %p, %p, %p, %p): SetFileTime failed with lasterr %d (%Rrc)\n",
1135	hFile, pAccessTime, pModificationTime, pChangeTime, pBirthTime, Err, rc));
1136	}
1137	return rc;
1138	}
1139
1140
1141	#if 0 /* RTFileSetMode is implemented by RTFileSetMode-r3-nt.cpp */
1142	/* This comes from a source file with a different set of system headers (DDK)
1143	* so it can't be declared in a common header, like internal/file.h.
1144	*/
1145	extern int rtFileNativeSetAttributes(HANDLE FileHandle, ULONG FileAttributes);
1146
1147
1148	RTR3DECL(int) RTFileSetMode(RTFILE hFile, RTFMODE fMode)
1149	{
1150	/*
1151	* Normalize the mode and call the API.
1152	*/
1153	fMode = rtFsModeNormalize(fMode, NULL, 0);
1154	if (!rtFsModeIsValid(fMode))
1155	return VERR_INVALID_PARAMETER;
1156
1157	ULONG FileAttributes = (fMode & RTFS_DOS_MASK) >> RTFS_DOS_SHIFT;
1158	int Err = rtFileNativeSetAttributes((HANDLE)hFile, FileAttributes);
1159	if (Err != ERROR_SUCCESS)
1160	{
1161	int rc = RTErrConvertFromWin32(Err);
1162	Log(("RTFileSetMode(%RTfile, %RTfmode): rtFileNativeSetAttributes (0x%08X) failed with err %d (%Rrc)\n",
1163	hFile, fMode, FileAttributes, Err, rc));
1164	return rc;
1165	}
1166	return VINF_SUCCESS;
1167	}
1168	#endif
1169
1170
1171	/* RTFileQueryFsSizes is implemented by ../nt/RTFileQueryFsSizes-nt.cpp */
1172
1173
1174	RTR3DECL(int) RTFileDelete(const char *pszFilename)
1175	{
1176	PRTUTF16 pwszFilename;
1177	int rc = RTPathWinFromUtf8(&pwszFilename, pszFilename, 0 /fFlags/);
1178	if (RT_SUCCESS(rc))
1179	{
1180	if (!DeleteFileW(pwszFilename))
1181	rc = RTErrConvertFromWin32(GetLastError());
1182	RTPathWinFree(pwszFilename);
1183	}
1184
1185	return rc;
1186	}
1187
1188
1189	RTDECL(int) RTFileRename(const char pszSrc, const char pszDst, unsigned fRename)
1190	{
1191	/*
1192	* Validate input.
1193	*/
1194	AssertMsgReturn(VALID_PTR(pszSrc), ("%p\n", pszSrc), VERR_INVALID_POINTER);
1195	AssertMsgReturn(VALID_PTR(pszDst), ("%p\n", pszDst), VERR_INVALID_POINTER);
1196	AssertMsgReturn(!(fRename & ~RTPATHRENAME_FLAGS_REPLACE), ("%#x\n", fRename), VERR_INVALID_PARAMETER);
1197
1198	/*
1199	* Hand it on to the worker.
1200	*/
1201	int rc = rtPathWin32MoveRename(pszSrc, pszDst,
1202	fRename & RTPATHRENAME_FLAGS_REPLACE ? MOVEFILE_REPLACE_EXISTING : 0,
1203	RTFS_TYPE_FILE);
1204
1205	LogFlow(("RTFileMove(%p:{%s}, %p:{%s}, %#x): returns %Rrc\n",
1206	pszSrc, pszSrc, pszDst, pszDst, fRename, rc));
1207	return rc;
1208
1209	}
1210
1211
1212	RTDECL(int) RTFileMove(const char pszSrc, const char pszDst, unsigned fMove)
1213	{
1214	/*
1215	* Validate input.
1216	*/
1217	AssertMsgReturn(VALID_PTR(pszSrc), ("%p\n", pszSrc), VERR_INVALID_POINTER);
1218	AssertMsgReturn(VALID_PTR(pszDst), ("%p\n", pszDst), VERR_INVALID_POINTER);
1219	AssertMsgReturn(!(fMove & ~RTFILEMOVE_FLAGS_REPLACE), ("%#x\n", fMove), VERR_INVALID_PARAMETER);
1220
1221	/*
1222	* Hand it on to the worker.
1223	*/
1224	int rc = rtPathWin32MoveRename(pszSrc, pszDst,
1225	fMove & RTFILEMOVE_FLAGS_REPLACE
1226	? MOVEFILE_COPY_ALLOWED \| MOVEFILE_REPLACE_EXISTING
1227	: MOVEFILE_COPY_ALLOWED,
1228	RTFS_TYPE_FILE);
1229
1230	LogFlow(("RTFileMove(%p:{%s}, %p:{%s}, %#x): returns %Rrc\n",
1231	pszSrc, pszSrc, pszDst, pszDst, fMove, rc));
1232	return rc;
1233	}
1234

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source: vbox/trunk/src/VBox/Runtime/r3/win/fileio-win.cpp@ 77231

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