Line data Source code
1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <stdio.h>
21 : #include <string.h>
22 : #include <sys/stat.h>
23 : #include <fcntl.h>
24 : #include <errno.h>
25 : #include <unistd.h>
26 : #include <limits.h>
27 :
28 : #include <tools/debug.hxx>
29 : #include <tools/stream.hxx>
30 : #include <vector>
31 :
32 : #include <osl/mutex.hxx>
33 : #include <osl/thread.h>
34 :
35 : // class FileBase
36 : #include <osl/file.hxx>
37 : #include <osl/detail/file.h>
38 : #include <rtl/instance.hxx>
39 : #include <rtl/strbuf.hxx>
40 :
41 : using namespace osl;
42 :
43 : // InternalLock ----------------------------------------------------------------
44 :
45 : namespace {
46 :
47 : struct LockMutex : public rtl::Static< osl::Mutex, LockMutex > {};
48 :
49 0 : struct InternalStreamLock
50 : {
51 : sal_Size m_nStartPos;
52 : sal_Size m_nEndPos;
53 : SvFileStream* m_pStream;
54 : osl::DirectoryItem m_aItem;
55 :
56 : InternalStreamLock( sal_Size, sal_Size, SvFileStream* );
57 : ~InternalStreamLock();
58 : };
59 :
60 : struct LockList : public rtl::Static< std::vector<InternalStreamLock>, LockList > {};
61 :
62 0 : InternalStreamLock::InternalStreamLock(
63 : sal_Size nStart,
64 : sal_Size nEnd,
65 : SvFileStream* pStream ) :
66 : m_nStartPos( nStart ),
67 : m_nEndPos( nEnd ),
68 0 : m_pStream( pStream )
69 : {
70 0 : osl::DirectoryItem::get( m_pStream->GetFileName(), m_aItem );
71 : #if OSL_DEBUG_LEVEL > 1
72 : OString aFileName(OUStringToOString(m_pStream->GetFileName(),
73 : osl_getThreadTextEncoding()));
74 : fprintf( stderr, "locked %s", aFileName.getStr() );
75 : if( m_nStartPos || m_nEndPos )
76 : fprintf(stderr, " [ %ld ... %ld ]", m_nStartPos, m_nEndPos );
77 : fprintf( stderr, "\n" );
78 : #endif
79 0 : }
80 :
81 0 : InternalStreamLock::~InternalStreamLock()
82 : {
83 : #if OSL_DEBUG_LEVEL > 1
84 : OString aFileName(OUStringToOString(m_pStream->GetFileName(),
85 : osl_getThreadTextEncoding()));
86 : fprintf( stderr, "unlocked %s", aFileName.getStr() );
87 : if( m_nStartPos || m_nEndPos )
88 : fprintf(stderr, " [ %ld ... %ld ]", m_nStartPos, m_nEndPos );
89 : fprintf( stderr, "\n" );
90 : #endif
91 0 : }
92 :
93 0 : bool lockFile( sal_Size nStart, sal_Size nEnd, SvFileStream* pStream )
94 : {
95 0 : osl::DirectoryItem aItem;
96 0 : if (osl::DirectoryItem::get( pStream->GetFileName(), aItem) != osl::FileBase::E_None )
97 : {
98 : SAL_INFO("tools.stream", "Failed to lookup stream for locking");
99 0 : return true;
100 : }
101 :
102 0 : osl::FileStatus aStatus( osl_FileStatus_Mask_Type );
103 0 : if ( aItem.getFileStatus( aStatus ) != osl::FileBase::E_None )
104 : {
105 : SAL_INFO("tools.stream", "Failed to stat stream for locking");
106 0 : return true;
107 : }
108 0 : if( aStatus.getFileType() == osl::FileStatus::Directory )
109 0 : return true;
110 :
111 0 : osl::MutexGuard aGuard( LockMutex::get() );
112 0 : std::vector<InternalStreamLock> &rLockList = LockList::get();
113 0 : for( std::vector<InternalStreamLock>::const_iterator i = rLockList.begin();
114 0 : i != rLockList.end(); )
115 : {
116 0 : if( aItem.isIdenticalTo( i->m_aItem ) )
117 : {
118 0 : bool bDenyByOptions = false;
119 0 : StreamMode nLockMode = i->m_pStream->GetStreamMode();
120 0 : StreamMode nNewMode = pStream->GetStreamMode();
121 :
122 0 : if( nLockMode & STREAM_SHARE_DENYALL )
123 0 : bDenyByOptions = true;
124 0 : else if( ( nLockMode & STREAM_SHARE_DENYWRITE ) &&
125 0 : ( nNewMode & STREAM_WRITE ) )
126 0 : bDenyByOptions = true;
127 0 : else if( ( nLockMode & STREAM_SHARE_DENYREAD ) &&
128 0 : ( nNewMode & STREAM_READ ) )
129 0 : bDenyByOptions = true;
130 :
131 0 : if( bDenyByOptions )
132 : {
133 0 : if( i->m_nStartPos == 0 && i->m_nEndPos == 0 ) // whole file is already locked
134 0 : return false;
135 0 : if( nStart == 0 && nEnd == 0) // cannot lock whole file
136 0 : return false;
137 :
138 0 : if( ( nStart < i->m_nStartPos && nEnd > i->m_nStartPos ) ||
139 0 : ( nStart < i->m_nEndPos && nEnd > i->m_nEndPos ) )
140 0 : return false;
141 : }
142 : }
143 : }
144 0 : rLockList.push_back( InternalStreamLock( nStart, nEnd, pStream ) );
145 0 : return true;
146 : }
147 :
148 0 : void unlockFile( sal_Size nStart, sal_Size nEnd, SvFileStream* pStream )
149 : {
150 0 : osl::MutexGuard aGuard( LockMutex::get() );
151 0 : std::vector<InternalStreamLock> &rLockList = LockList::get();
152 0 : for( std::vector<InternalStreamLock>::iterator i = rLockList.begin();
153 0 : i != rLockList.end(); )
154 : {
155 0 : if ( i->m_pStream == pStream
156 0 : && ( ( nStart == 0 && nEnd == 0 )
157 0 : || ( i->m_nStartPos == nStart && i->m_nEndPos == nEnd ) ) )
158 : {
159 0 : i = rLockList.erase(i);
160 : }
161 : else
162 : {
163 0 : ++i;
164 : }
165 0 : }
166 0 : }
167 :
168 : }
169 :
170 : // StreamData ------------------------------------------------------------------
171 :
172 : class StreamData
173 : {
174 : public:
175 : oslFileHandle rHandle;
176 :
177 0 : StreamData() : rHandle( 0 ) { }
178 : };
179 :
180 0 : static sal_uInt32 GetSvError( int nErrno )
181 : {
182 : static struct { int nErr; sal_uInt32 sv; } errArr[] =
183 : {
184 : { 0, SVSTREAM_OK },
185 : { EACCES, SVSTREAM_ACCESS_DENIED },
186 : { EBADF, SVSTREAM_INVALID_HANDLE },
187 : #if defined(RS6000) || defined(NETBSD) || \
188 : defined(FREEBSD) || defined(MACOSX) || defined(OPENBSD) || \
189 : defined(__FreeBSD_kernel__) || defined (AIX) || defined(DRAGONFLY) || \
190 : defined(IOS)
191 : { EDEADLK, SVSTREAM_LOCKING_VIOLATION },
192 : #else
193 : { EDEADLOCK, SVSTREAM_LOCKING_VIOLATION },
194 : #endif
195 : { EINVAL, SVSTREAM_INVALID_PARAMETER },
196 : { EMFILE, SVSTREAM_TOO_MANY_OPEN_FILES },
197 : { ENFILE, SVSTREAM_TOO_MANY_OPEN_FILES },
198 : { ENOENT, SVSTREAM_FILE_NOT_FOUND },
199 : { EPERM, SVSTREAM_ACCESS_DENIED },
200 : { EROFS, SVSTREAM_ACCESS_DENIED },
201 : { EAGAIN, SVSTREAM_LOCKING_VIOLATION },
202 : { EISDIR, SVSTREAM_PATH_NOT_FOUND },
203 : { ELOOP, SVSTREAM_PATH_NOT_FOUND },
204 : #if !defined(RS6000) && !defined(NETBSD) && !defined (FREEBSD) && \
205 : !defined(MACOSX) && !defined(OPENBSD) && !defined(__FreeBSD_kernel__) && \
206 : !defined(DRAGONFLY)
207 : { EMULTIHOP, SVSTREAM_PATH_NOT_FOUND },
208 : { ENOLINK, SVSTREAM_PATH_NOT_FOUND },
209 : #endif
210 : { ENOTDIR, SVSTREAM_PATH_NOT_FOUND },
211 : { ETXTBSY, SVSTREAM_ACCESS_DENIED },
212 : { EEXIST, SVSTREAM_CANNOT_MAKE },
213 : { ENOSPC, SVSTREAM_DISK_FULL },
214 : { (int)0xFFFF, SVSTREAM_GENERALERROR }
215 : };
216 :
217 0 : sal_uInt32 nRetVal = SVSTREAM_GENERALERROR; // default error
218 0 : int i=0;
219 0 : do
220 : {
221 0 : if ( errArr[i].nErr == nErrno )
222 : {
223 0 : nRetVal = errArr[i].sv;
224 0 : break;
225 : }
226 0 : ++i;
227 : }
228 0 : while( errArr[i].nErr != 0xFFFF );
229 0 : return nRetVal;
230 : }
231 :
232 0 : static sal_uInt32 GetSvError( oslFileError nErrno )
233 : {
234 : static struct { oslFileError nErr; sal_uInt32 sv; } errArr[] =
235 : {
236 : { osl_File_E_None, SVSTREAM_OK },
237 : { osl_File_E_ACCES, SVSTREAM_ACCESS_DENIED },
238 : { osl_File_E_BADF, SVSTREAM_INVALID_HANDLE },
239 : { osl_File_E_DEADLK, SVSTREAM_LOCKING_VIOLATION },
240 : { osl_File_E_INVAL, SVSTREAM_INVALID_PARAMETER },
241 : { osl_File_E_MFILE, SVSTREAM_TOO_MANY_OPEN_FILES },
242 : { osl_File_E_NFILE, SVSTREAM_TOO_MANY_OPEN_FILES },
243 : { osl_File_E_NOENT, SVSTREAM_FILE_NOT_FOUND },
244 : { osl_File_E_PERM, SVSTREAM_ACCESS_DENIED },
245 : { osl_File_E_ROFS, SVSTREAM_ACCESS_DENIED },
246 : { osl_File_E_AGAIN, SVSTREAM_LOCKING_VIOLATION },
247 : { osl_File_E_ISDIR, SVSTREAM_PATH_NOT_FOUND },
248 : { osl_File_E_LOOP, SVSTREAM_PATH_NOT_FOUND },
249 : { osl_File_E_MULTIHOP, SVSTREAM_PATH_NOT_FOUND },
250 : { osl_File_E_NOLINK, SVSTREAM_PATH_NOT_FOUND },
251 : { osl_File_E_NOTDIR, SVSTREAM_PATH_NOT_FOUND },
252 : { osl_File_E_EXIST, SVSTREAM_CANNOT_MAKE },
253 : { osl_File_E_NOSPC, SVSTREAM_DISK_FULL },
254 : { (oslFileError)0xFFFF, SVSTREAM_GENERALERROR }
255 : };
256 :
257 0 : sal_uInt32 nRetVal = SVSTREAM_GENERALERROR; // default error
258 0 : int i=0;
259 0 : do
260 : {
261 0 : if ( errArr[i].nErr == nErrno )
262 : {
263 0 : nRetVal = errArr[i].sv;
264 0 : break;
265 : }
266 0 : ++i;
267 : }
268 0 : while( errArr[i].nErr != (oslFileError)0xFFFF );
269 0 : return nRetVal;
270 : }
271 :
272 0 : SvFileStream::SvFileStream( const OUString& rFileName, StreamMode nOpenMode )
273 : {
274 0 : bIsOpen = false;
275 0 : nLockCounter = 0;
276 0 : bIsWritable = false;
277 0 : pInstanceData = new StreamData;
278 :
279 0 : SetBufferSize( 1024 );
280 : // convert URL to SystemPath, if necessary
281 0 : OUString aSystemFileName;
282 0 : if( FileBase::getSystemPathFromFileURL( rFileName , aSystemFileName )
283 : != FileBase::E_None )
284 : {
285 0 : aSystemFileName = rFileName;
286 : }
287 0 : Open( aSystemFileName, nOpenMode );
288 0 : }
289 :
290 0 : SvFileStream::SvFileStream()
291 : {
292 0 : bIsOpen = false;
293 0 : nLockCounter = 0;
294 0 : bIsWritable = false;
295 0 : pInstanceData = new StreamData;
296 0 : SetBufferSize( 1024 );
297 0 : }
298 :
299 0 : SvFileStream::~SvFileStream()
300 : {
301 0 : Close();
302 :
303 0 : unlockFile( 0, 0, this );
304 :
305 0 : if (pInstanceData)
306 0 : delete pInstanceData;
307 0 : }
308 :
309 0 : sal_Size SvFileStream::GetData( void* pData, sal_Size nSize )
310 : {
311 : #ifdef DBG_UTIL
312 : OStringBuffer aTraceStr("SvFileStream::GetData(): ");
313 : aTraceStr.append(static_cast<sal_Int64>(nSize));
314 : aTraceStr.append(" Bytes from ");
315 : aTraceStr.append(OUStringToOString(aFilename,
316 : osl_getThreadTextEncoding()));
317 : OSL_TRACE("%s", aTraceStr.getStr());
318 : #endif
319 :
320 0 : sal_uInt64 nRead = 0;
321 0 : if ( IsOpen() )
322 : {
323 0 : oslFileError rc = osl_readFile(pInstanceData->rHandle,pData,(sal_uInt64)nSize,&nRead);
324 0 : if ( rc != osl_File_E_None )
325 : {
326 0 : SetError( ::GetSvError( rc ));
327 0 : return -1;
328 : }
329 : }
330 0 : return (sal_Size)nRead;
331 : }
332 :
333 0 : sal_Size SvFileStream::PutData( const void* pData, sal_Size nSize )
334 : {
335 : #ifdef DBG_UTIL
336 : OStringBuffer aTraceStr("SvFileStream::PutData(): ");
337 : aTraceStr.append(static_cast<sal_Int64>(nSize));
338 : aTraceStr.append(" Bytes to ");
339 : aTraceStr.append(OUStringToOString(aFilename,
340 : osl_getThreadTextEncoding()));
341 : OSL_TRACE("%s", aTraceStr.getStr());
342 : #endif
343 :
344 0 : sal_uInt64 nWrite = 0;
345 0 : if ( IsOpen() )
346 : {
347 0 : oslFileError rc = osl_writeFile(pInstanceData->rHandle,pData,(sal_uInt64)nSize,&nWrite);
348 0 : if ( rc != osl_File_E_None )
349 : {
350 0 : SetError( ::GetSvError( rc ) );
351 0 : return -1;
352 : }
353 0 : else if( !nWrite )
354 0 : SetError( SVSTREAM_DISK_FULL );
355 : }
356 0 : return (sal_Size)nWrite;
357 : }
358 :
359 0 : sal_uInt64 SvFileStream::SeekPos(sal_uInt64 const nPos)
360 : {
361 : // check if a truncated STREAM_SEEK_TO_END was passed
362 : assert(nPos != (sal_uInt64)(sal_uInt32)STREAM_SEEK_TO_END);
363 0 : if ( IsOpen() )
364 : {
365 : oslFileError rc;
366 : sal_uInt64 nNewPos;
367 0 : if ( nPos != STREAM_SEEK_TO_END )
368 0 : rc = osl_setFilePos( pInstanceData->rHandle, osl_Pos_Absolut, nPos );
369 : else
370 0 : rc = osl_setFilePos( pInstanceData->rHandle, osl_Pos_End, 0 );
371 :
372 0 : if ( rc != osl_File_E_None )
373 : {
374 0 : SetError( SVSTREAM_SEEK_ERROR );
375 0 : return 0L;
376 : }
377 0 : rc = osl_getFilePos( pInstanceData->rHandle, &nNewPos );
378 0 : return (sal_Size) nNewPos;
379 : }
380 0 : SetError( SVSTREAM_GENERALERROR );
381 0 : return 0L;
382 : }
383 :
384 0 : void SvFileStream::FlushData()
385 : {
386 : // does not exist locally
387 0 : }
388 :
389 0 : bool SvFileStream::LockRange( sal_Size nByteOffset, sal_Size nBytes )
390 : {
391 0 : int nLockMode = 0;
392 :
393 0 : if ( ! IsOpen() )
394 0 : return false;
395 :
396 0 : if ( eStreamMode & STREAM_SHARE_DENYALL )
397 : {
398 0 : if (bIsWritable)
399 0 : nLockMode = F_WRLCK;
400 : else
401 0 : nLockMode = F_RDLCK;
402 : }
403 :
404 0 : if ( eStreamMode & STREAM_SHARE_DENYREAD )
405 : {
406 0 : if (bIsWritable)
407 0 : nLockMode = F_WRLCK;
408 : else
409 : {
410 0 : SetError(SVSTREAM_LOCKING_VIOLATION);
411 0 : return false;
412 : }
413 : }
414 :
415 0 : if ( eStreamMode & STREAM_SHARE_DENYWRITE )
416 : {
417 0 : if (bIsWritable)
418 0 : nLockMode = F_WRLCK;
419 : else
420 0 : nLockMode = F_RDLCK;
421 : }
422 :
423 0 : if (!nLockMode)
424 0 : return true;
425 :
426 0 : if( !lockFile( nByteOffset, nByteOffset+nBytes, this ) )
427 : {
428 : #if OSL_DEBUG_LEVEL > 1
429 : fprintf( stderr, "InternalLock on %s [ %ld ... %ld ] failed\n",
430 : OUStringToOString(aFilename, osl_getThreadTextEncoding()).getStr(), nByteOffset, nByteOffset+nBytes );
431 : #endif
432 0 : return false;
433 : }
434 :
435 0 : return true;
436 : }
437 :
438 0 : bool SvFileStream::UnlockRange( sal_Size nByteOffset, sal_Size nBytes )
439 : {
440 0 : if ( ! IsOpen() )
441 0 : return false;
442 :
443 0 : unlockFile( nByteOffset, nByteOffset+nBytes, this );
444 :
445 0 : return true;
446 : }
447 :
448 0 : bool SvFileStream::LockFile()
449 : {
450 0 : return LockRange( 0UL, 0UL );
451 : }
452 :
453 0 : bool SvFileStream::UnlockFile()
454 : {
455 0 : return UnlockRange( 0UL, 0UL );
456 : }
457 :
458 0 : void SvFileStream::Open( const OUString& rFilename, StreamMode nOpenMode )
459 : {
460 : sal_uInt32 uFlags;
461 : oslFileHandle nHandleTmp;
462 :
463 0 : Close();
464 0 : errno = 0;
465 0 : eStreamMode = nOpenMode;
466 0 : eStreamMode &= ~STREAM_TRUNC; // don't truncat on reopen
467 :
468 0 : aFilename = rFilename;
469 :
470 : #ifdef DBG_UTIL
471 : OString aLocalFilename(OUStringToOString(aFilename, osl_getThreadTextEncoding()));
472 : OStringBuffer aTraceStr("SvFileStream::Open(): ");
473 : aTraceStr.append(aLocalFilename);
474 : OSL_TRACE( "%s", aTraceStr.getStr() );
475 : #endif
476 :
477 0 : OUString aFileURL;
478 0 : osl::DirectoryItem aItem;
479 0 : osl::FileStatus aStatus( osl_FileStatus_Mask_Type | osl_FileStatus_Mask_LinkTargetURL );
480 :
481 : // FIXME: we really need to switch to a pure URL model ...
482 0 : if ( osl::File::getFileURLFromSystemPath( aFilename, aFileURL ) != osl::FileBase::E_None )
483 0 : aFileURL = aFilename;
484 0 : bool bStatValid = ( osl::DirectoryItem::get( aFileURL, aItem) == osl::FileBase::E_None &&
485 0 : aItem.getFileStatus( aStatus ) == osl::FileBase::E_None );
486 :
487 : // SvFileStream can't open a directory
488 0 : if( bStatValid && aStatus.getFileType() == osl::FileStatus::Directory )
489 : {
490 0 : SetError( ::GetSvError( EISDIR ) );
491 0 : return;
492 : }
493 :
494 0 : if ( !( nOpenMode & STREAM_WRITE ) )
495 0 : uFlags = osl_File_OpenFlag_Read;
496 0 : else if ( !( nOpenMode & STREAM_READ ) )
497 0 : uFlags = osl_File_OpenFlag_Write;
498 : else
499 0 : uFlags = osl_File_OpenFlag_Read | osl_File_OpenFlag_Write;
500 :
501 : // Fix (MDA, 18.01.95): Don't open with O_CREAT upon RD_ONLY
502 : // Important for Read-Only-Filesystems (e.g, CDROM)
503 0 : if ( (!( nOpenMode & STREAM_NOCREATE )) && ( uFlags != osl_File_OpenFlag_Read ) )
504 0 : uFlags |= osl_File_OpenFlag_Create;
505 0 : if ( nOpenMode & STREAM_TRUNC )
506 0 : uFlags |= osl_File_OpenFlag_Trunc;
507 :
508 0 : uFlags |= osl_File_OpenFlag_NoExcl | osl_File_OpenFlag_NoLock;
509 :
510 0 : if ( nOpenMode & STREAM_WRITE)
511 : {
512 0 : if ( nOpenMode & STREAM_COPY_ON_SYMLINK )
513 : {
514 0 : if ( bStatValid && aStatus.getFileType() == osl::FileStatus::Link &&
515 0 : aStatus.getLinkTargetURL().getLength() > 0 )
516 : {
517 : // delete the symbolic link, and replace it with the contents of the link
518 0 : if (osl::File::remove( aFileURL ) == osl::FileBase::E_None )
519 : {
520 0 : File::copy( aStatus.getLinkTargetURL(), aFileURL );
521 : #if OSL_DEBUG_LEVEL > 0
522 : fprintf( stderr,
523 : "Removing link and replacing with file contents (%s) -> (%s).\n",
524 : OUStringToOString( aStatus.getLinkTargetURL(),
525 : RTL_TEXTENCODING_UTF8).getStr(),
526 : OUStringToOString( aFileURL,
527 : RTL_TEXTENCODING_UTF8).getStr() );
528 : #endif
529 : }
530 : }
531 : }
532 : }
533 :
534 0 : oslFileError rc = osl_openFile( aFileURL.pData, &nHandleTmp, uFlags );
535 0 : if ( rc != osl_File_E_None )
536 : {
537 0 : if ( uFlags & osl_File_OpenFlag_Write )
538 : {
539 : // Change to read-only
540 0 : uFlags &= ~osl_File_OpenFlag_Write;
541 0 : rc = osl_openFile( aFileURL.pData, &nHandleTmp, uFlags );
542 : }
543 : }
544 0 : if ( rc == osl_File_E_None )
545 : {
546 0 : pInstanceData->rHandle = nHandleTmp;
547 0 : bIsOpen = true;
548 0 : if ( uFlags & osl_File_OpenFlag_Write )
549 0 : bIsWritable = true;
550 :
551 0 : if ( !LockFile() ) // whole file
552 : {
553 0 : rc = osl_closeFile( nHandleTmp );
554 0 : bIsOpen = false;
555 0 : bIsWritable = false;
556 0 : pInstanceData->rHandle = 0;
557 : }
558 : }
559 : else
560 0 : SetError( ::GetSvError( rc ) );
561 : }
562 :
563 0 : void SvFileStream::Close()
564 : {
565 0 : UnlockFile();
566 :
567 0 : if ( IsOpen() )
568 : {
569 : #ifdef DBG_UTIL
570 : OStringBuffer aTraceStr("SvFileStream::Close(): ");
571 : aTraceStr.append(OUStringToOString(aFilename,
572 : osl_getThreadTextEncoding()));
573 : OSL_TRACE("%s", aTraceStr.getStr());
574 : #endif
575 :
576 0 : Flush();
577 0 : osl_closeFile( pInstanceData->rHandle );
578 0 : pInstanceData->rHandle = 0;
579 : }
580 :
581 0 : bIsOpen = false;
582 0 : bIsWritable = false;
583 0 : SvStream::ClearBuffer();
584 0 : SvStream::ClearError();
585 0 : }
586 :
587 : /// set filepointer to beginning of file
588 0 : void SvFileStream::ResetError()
589 : {
590 0 : SvStream::ClearError();
591 0 : }
592 :
593 0 : void SvFileStream::SetSize (sal_uInt64 const nSize)
594 : {
595 0 : if (IsOpen())
596 : {
597 0 : oslFileError rc = osl_setFileSize( pInstanceData->rHandle, nSize );
598 0 : if (rc != osl_File_E_None )
599 : {
600 0 : SetError ( ::GetSvError( rc ));
601 : }
602 : }
603 0 : }
604 :
605 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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