|
1 // Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // f32\srom\sr_rom.cpp |
|
15 // |
|
16 // |
|
17 |
|
18 #include "sr_std.h" |
|
19 |
|
20 #if defined(_UNICODE) |
|
21 #define __SIZE(len) ((len)<<1) |
|
22 #else |
|
23 #define __SIZE(len) (len) |
|
24 #endif |
|
25 |
|
26 const TRomHeader* CRom::iRomHeaderAddress=(TRomHeader*)UserSvr::RomHeaderAddress(); |
|
27 |
|
28 TInt TRomDir::BinarySearch(const TDesC& aName, TInt aLengthLimit, TInt aMode, TBool aDir) const |
|
29 { |
|
30 // RDebug::Print(_L("BinarySearch %S ll=%d m=%d dir=%d"), &aName, aLengthLimit, aMode, aDir); |
|
31 const TRomDirSortInfo* s = SortInfo(); |
|
32 TInt l = aDir ? 0 : s->iSubDirCount; |
|
33 TInt r = aDir ? s->iSubDirCount : s->iSubDirCount + s->iFileCount; |
|
34 TBool found = EFalse; |
|
35 while (r>l) |
|
36 { |
|
37 TInt m=(l+r)>>1; |
|
38 const TRomEntry* e = SortedEntry(m); |
|
39 TInt nl = Min(e->iNameLength, aLengthLimit); |
|
40 TPtrC en((const TText*)&e->iName[0], nl); |
|
41 TInt k = CRomMountCB::Compare(aName, en); |
|
42 if (k==0) |
|
43 { |
|
44 if (aMode == EArrayFindMode_Any) |
|
45 { |
|
46 // RDebug::Printf("Found %d", m); |
|
47 return m; |
|
48 } |
|
49 found = ETrue; |
|
50 if (aMode == EArrayFindMode_First) |
|
51 r=m; |
|
52 else |
|
53 l=m+1; |
|
54 } |
|
55 else if (k>0) |
|
56 l=m+1; |
|
57 else |
|
58 r=m; |
|
59 } |
|
60 // RDebug::Printf("Found=%d r=%d", found, r); |
|
61 return found ? r : KErrNotFound; |
|
62 } |
|
63 |
|
64 // Navigate the path to find the leaf directory, starting at this. |
|
65 const TRomDir* TRomDir::FindLeafDir(const TDesC& aPath) const |
|
66 { |
|
67 TLex lex(aPath); |
|
68 TInt r; |
|
69 const TRomDir* d = this; |
|
70 FOREVER |
|
71 { |
|
72 lex.Inc(); // Skip the file separator |
|
73 lex.Mark(); |
|
74 r=lex.Remainder().Locate(KPathDelimiter); |
|
75 if (r==KErrNotFound) |
|
76 r=lex.Remainder().Length(); |
|
77 if (r==0) // End of the path |
|
78 break; |
|
79 lex.Inc(r); // Set the token length |
|
80 TInt ix = d->BinarySearch(lex.MarkedToken(), KMaxTInt, EArrayFindMode_Any, ETrue); |
|
81 if (ix<0) |
|
82 return NULL; |
|
83 const TRomEntry* e = d->SortedEntry(ix); |
|
84 // if (!(e->iAtt & KEntryAttDir)) |
|
85 // return NULL; |
|
86 d = (const TRomDir*)e->iAddressLin; |
|
87 } |
|
88 return d; |
|
89 } |
|
90 |
|
91 LOCAL_C void Fault(TFault aFault) |
|
92 // |
|
93 // Report a fault in the rom file system. |
|
94 // |
|
95 { |
|
96 |
|
97 User::Panic(_L("ROMFILESYS"),aFault); |
|
98 } |
|
99 |
|
100 CRomMountCB::CRomMountCB(const CRom* aRom) |
|
101 // |
|
102 // Constructor |
|
103 // |
|
104 : iRom(aRom) |
|
105 { |
|
106 } |
|
107 |
|
108 void CRomMountCB::Dismounted() |
|
109 // |
|
110 // Dummy implementation of pure virtual function |
|
111 // |
|
112 {} |
|
113 |
|
114 void CRomMountCB::IsFileInRom(const TDesC& aName,TUint8*& aFileStart) |
|
115 // |
|
116 // Return the address of the file if it is in rom |
|
117 // |
|
118 { |
|
119 |
|
120 TLinAddr dir; |
|
121 TLinAddr entry=0; |
|
122 aFileStart=NULL; |
|
123 TRAPD(r,FindEntryL(aName,KEntryAttNormal,ETrue,dir,entry)); |
|
124 if (r!=KErrNone) |
|
125 return; |
|
126 aFileStart=(TUint8*)((const TRomEntry*)entry)->iAddressLin; |
|
127 } |
|
128 |
|
129 TInt CRomMountCB::Compare(const TDesC& aLeft, const TDesC& aRight) |
|
130 // |
|
131 //Compares two filenames. Folds ASCII characters to uppercase |
|
132 // |
|
133 { |
|
134 |
|
135 TInt ll = aLeft.Length(); |
|
136 TInt rl = aRight.Length(); |
|
137 TInt len = Min(ll, rl); |
|
138 const TText* l = aLeft.Ptr(); |
|
139 const TText* r = aRight.Ptr(); |
|
140 while (len--) |
|
141 { |
|
142 TText lc = *l++; |
|
143 TText rc = *r++; |
|
144 if (lc >= 'A' && lc <= 'Z') |
|
145 lc += ('a' - 'A'); |
|
146 if (rc >= 'A' && rc <= 'Z') |
|
147 rc += ('a' - 'A'); |
|
148 TInt x = lc - rc; |
|
149 if (x) |
|
150 return x; |
|
151 } |
|
152 // match up to end of shorter string, now compare lengths |
|
153 return ll - rl; |
|
154 } |
|
155 |
|
156 void CRomMountCB::FindBinaryL(const TDesC& aName, TUint aAtt, TBool aAttKnown, TLinAddr aDir, TLinAddr& aEntry, TInt aError) const |
|
157 // |
|
158 //Identical to FindL, but uses binary search for faster performance. |
|
159 //However, can't deal with wildcards, whereas FindL can. |
|
160 // |
|
161 { |
|
162 |
|
163 //Although the value of aEntry is not used, we expect it to be zero, |
|
164 __ASSERT_DEBUG(aEntry==0,Fault(ERomInvalidArgument)); |
|
165 const TRomDir* d = (const TRomDir*)aDir; |
|
166 TBool ix; |
|
167 if (aAttKnown) |
|
168 ix = d->BinarySearch(aName, KMaxTInt, EArrayFindMode_Any, aAtt & KEntryAttDir); |
|
169 else |
|
170 { |
|
171 //We don't know whether we're looking for a file or a directory, so |
|
172 //look through both |
|
173 ix = d->BinarySearch(aName, KMaxTInt, EArrayFindMode_Any, EFalse); |
|
174 if (ix<0 || !MatchEntryAtt(d->SortedEntry(ix)->iAtt, aAtt) ) |
|
175 ix = d->BinarySearch(aName, KMaxTInt, EArrayFindMode_Any, ETrue); |
|
176 } |
|
177 if (ix>=0) |
|
178 { |
|
179 const TRomEntry* e = d->SortedEntry(ix); |
|
180 if (MatchEntryAtt(e->iAtt, aAtt)) |
|
181 { |
|
182 aEntry = (TLinAddr)e; |
|
183 return; |
|
184 } |
|
185 } |
|
186 User::Leave(aError); |
|
187 } |
|
188 |
|
189 void CRomMountCB::FindL(const TDesC& aName, TUint anAtt, TLinAddr aDir, TLinAddr& anEntry, TInt anError) const |
|
190 // |
|
191 // Scan from aDir looking for aName. |
|
192 // If found return the result in anEntry. |
|
193 // |
|
194 { |
|
195 const TRomDir* pD = (const TRomDir*)aDir; |
|
196 const TRomEntry* pE; |
|
197 if (anEntry==0) |
|
198 pE = &pD->iEntry; |
|
199 else |
|
200 { |
|
201 pE = (const TRomEntry*)anEntry; |
|
202 pE = PtrAdd(pE, Align4(__SIZE(pE->iNameLength) + KRomEntrySize)); |
|
203 } |
|
204 const TRomEntry* pEnd = PtrAdd(&pD->iEntry, pD->iSize); |
|
205 while (pE<pEnd) |
|
206 { |
|
207 TPtrC name = TPtrC((const TText*)&pE->iName[0], pE->iNameLength); |
|
208 if (name.MatchF(aName)!=KErrNotFound && MatchEntryAtt(pE->iAtt, anAtt)) |
|
209 { |
|
210 anEntry = (TLinAddr)pE; |
|
211 return; |
|
212 } |
|
213 pE = PtrAdd(pE, Align4(__SIZE(pE->iNameLength) + KRomEntrySize)); |
|
214 } |
|
215 User::Leave(anError); |
|
216 } |
|
217 |
|
218 void CRomMountCB::FindEntryL(const TDesC& aName, TUint anAtt, TBool aAttKnown, TLinAddr& aDir, TLinAddr& anEntry) const |
|
219 // |
|
220 // Locate an entry from its full path name. |
|
221 // |
|
222 { |
|
223 |
|
224 TInt namePos=aName.LocateReverse(KPathDelimiter)+1; // There is always a path delimiter |
|
225 const TRomDir* d = ((const TRomDir*)RomRootDirectory())->FindLeafDir(aName.Left(namePos)); |
|
226 if (!d) |
|
227 User::Leave(KErrPathNotFound); |
|
228 anEntry=0; |
|
229 aDir = (TLinAddr)d; |
|
230 FindBinaryL(aName.Mid(namePos),anAtt,aAttKnown,aDir,anEntry,KErrNotFound); |
|
231 } |
|
232 |
|
233 void CRomMountCB::MountL(TBool /*aForceMount*/) |
|
234 // |
|
235 // Mount a media. Only allowed to leave with KErrNoMemory,KErrNotReady,KErrCorrupt,KErrUnknown. |
|
236 // |
|
237 { |
|
238 |
|
239 iUniqueID=0; |
|
240 iSize=(TUint)RomHeader().iUncompressedSize; |
|
241 SetVolumeName(_L("RomDrive").AllocL()); |
|
242 } |
|
243 |
|
244 TInt CRomMountCB::ReMount() |
|
245 // |
|
246 // Try and remount this media. |
|
247 // |
|
248 { |
|
249 |
|
250 Fault(ERomReMountNotSupported); |
|
251 return(0); |
|
252 } |
|
253 |
|
254 void CRomMountCB::VolumeL(TVolumeInfo& aVolume) const |
|
255 // |
|
256 // Return the volume info. |
|
257 // |
|
258 { |
|
259 |
|
260 aVolume.iFree=0; |
|
261 } |
|
262 |
|
263 void CRomMountCB::SetVolumeL(TDes& /*aName*/) |
|
264 // |
|
265 // Set the volume label. |
|
266 // |
|
267 { |
|
268 |
|
269 User::Leave(KErrAccessDenied); |
|
270 } |
|
271 |
|
272 void CRomMountCB::MkDirL(const TDesC& /*aName*/) |
|
273 // |
|
274 // Make a directory. |
|
275 // |
|
276 { |
|
277 |
|
278 User::Leave(KErrAccessDenied); |
|
279 } |
|
280 |
|
281 void CRomMountCB::RmDirL(const TDesC& /*aName*/) |
|
282 // |
|
283 // Remove a directory. |
|
284 // |
|
285 { |
|
286 |
|
287 User::Leave(KErrAccessDenied); |
|
288 } |
|
289 |
|
290 void CRomMountCB::DeleteL(const TDesC& /*aName*/) |
|
291 // |
|
292 // Delete a file. |
|
293 // |
|
294 { |
|
295 |
|
296 User::Leave(KErrAccessDenied); |
|
297 } |
|
298 |
|
299 void CRomMountCB::RenameL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/) |
|
300 // |
|
301 // Rename a file or directory. |
|
302 // |
|
303 { |
|
304 |
|
305 User::Leave(KErrAccessDenied); |
|
306 } |
|
307 |
|
308 void CRomMountCB::ReplaceL(const TDesC& /*anOldName*/,const TDesC& /*aNewName*/) |
|
309 // |
|
310 // Atomic replace. |
|
311 // |
|
312 { |
|
313 |
|
314 User::Leave(KErrAccessDenied); |
|
315 } |
|
316 |
|
317 void CRomMountCB::EntryL(const TDesC& aName,TEntry& anEntry) const |
|
318 // |
|
319 // Get entry details. |
|
320 // |
|
321 { |
|
322 |
|
323 TLinAddr dir; |
|
324 TLinAddr entry; |
|
325 FindEntryL(aName,KEntryAttMaskSupported,EFalse,dir,entry); |
|
326 const TRomEntry* pE = (const TRomEntry*)entry; |
|
327 anEntry.iAtt=pE->iAtt; |
|
328 anEntry.iSize=pE->iSize; |
|
329 anEntry.iModified=RomHeader().iTime; |
|
330 anEntry.iName.Des().Copy((TText*)&pE->iName[0],pE->iNameLength); |
|
331 ReadUidL(pE->iAddressLin,anEntry); |
|
332 } |
|
333 |
|
334 void CRomMountCB::SetEntryL(const TDesC& /*aName*/,const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/) |
|
335 // |
|
336 // Set entry details. |
|
337 // |
|
338 { |
|
339 |
|
340 User::Leave(KErrAccessDenied); |
|
341 } |
|
342 |
|
343 void CRomMountCB::FileOpenL(const TDesC& aName,TUint aMode,TFileOpen anOpen,CFileCB* aFile) |
|
344 // |
|
345 // Open a file on the current mount. |
|
346 // |
|
347 { |
|
348 |
|
349 if (aMode&EFileWrite) |
|
350 User::Leave(KErrAccessDenied); |
|
351 switch (anOpen) |
|
352 { |
|
353 case EFileCreate: |
|
354 case EFileReplace: |
|
355 User::Leave(KErrAccessDenied); |
|
356 case EFileOpen: |
|
357 break; |
|
358 default: |
|
359 User::Leave(KErrAccessDenied); |
|
360 } |
|
361 TLinAddr dir; |
|
362 TLinAddr entry; |
|
363 FindEntryL(aName,KEntryAttMustBeFile,ETrue,dir,entry); |
|
364 const TRomEntry* pE = (const TRomEntry*)entry; |
|
365 CRomFileCB& file=(*((CRomFileCB*)aFile)); |
|
366 file.SetSize(pE->iSize); |
|
367 file.SetAtt(pE->iAtt); |
|
368 file.SetModified(RomHeader().iTime); |
|
369 file.SetBase((const TUint8*)pE->iAddressLin); |
|
370 } |
|
371 |
|
372 void CRomMountCB::DirOpenL(const TDesC& aName, CDirCB* aDir) |
|
373 // |
|
374 // Open a file on the current mount. |
|
375 // |
|
376 { |
|
377 |
|
378 TFileName fileName=aName; |
|
379 TInt namePos=aName.LocateReverse(KPathDelimiter)+1; // Exclude path delimiter |
|
380 if (namePos==aName.Length()) |
|
381 fileName+=_L("*"); |
|
382 const TRomDir* d = ((const TRomDir*)RomRootDirectory())->FindLeafDir(aName.Left(namePos)); |
|
383 if (!d) |
|
384 User::Leave(KErrPathNotFound); |
|
385 CRomDirCB& dirCB = *(CRomDirCB*)aDir; |
|
386 dirCB.SetDir((TLinAddr)d, NULL, fileName.Mid(namePos)); |
|
387 } |
|
388 |
|
389 void CRomMountCB::RawReadL(TInt64 aPos,TInt aLength,const TAny* aDes,TInt anOffset,const RMessagePtr2& aMessage) const |
|
390 // |
|
391 // Read up to aLength data directly from the ROM |
|
392 // |
|
393 { |
|
394 |
|
395 TUint romSize=RomHeader().iUncompressedSize; |
|
396 if (I64LOW(aPos)>=romSize) |
|
397 aMessage.WriteL(2,TPtrC8(NULL,0),anOffset); |
|
398 else |
|
399 { |
|
400 TInt len=Min((TInt)(romSize-I64LOW(aPos)),aLength); |
|
401 aMessage.WriteL(2,TPtrC8((TUint8*)RomHeader().iRomBase,len),anOffset); |
|
402 } |
|
403 } |
|
404 |
|
405 void CRomMountCB::RawWriteL(TInt64 /*aPos*/,TInt /*aLength*/,const TAny* /*aDes*/,TInt /*anOffset*/,const RMessagePtr2& /*aMessage*/) |
|
406 // |
|
407 // Write aLength data to ROM (?) |
|
408 // |
|
409 { |
|
410 |
|
411 User::Leave(KErrAccessDenied); |
|
412 } |
|
413 |
|
414 void CRomMountCB::ReadUidL(TLinAddr anAddr,TEntry& anEntry) const |
|
415 // |
|
416 // Read a uid if present. |
|
417 // |
|
418 { |
|
419 // Need to consider zero-length files (for which anAddr is 0) |
|
420 // and files too small to have a UID |
|
421 if (anEntry.iSize >= (TInt) sizeof(TCheckedUid)) |
|
422 { |
|
423 TCheckedUid entryUid(TPtrC8((TUint8*)anAddr, sizeof(TCheckedUid))); |
|
424 anEntry.iType=entryUid.UidType(); |
|
425 } |
|
426 else |
|
427 { |
|
428 anEntry.iType=KNullUid; |
|
429 } |
|
430 } |
|
431 |
|
432 |
|
433 |
|
434 void CRomMountCB::ReadSectionL(const TDesC& aName,TInt aPos,TAny* aTrg,TInt aLength,const RMessagePtr2& aMessage) |
|
435 { |
|
436 |
|
437 __PRINT(Print(_L("CRomMountCB::ReadSectionL"))); |
|
438 |
|
439 TLinAddr dir; |
|
440 TLinAddr entry; |
|
441 FindEntryL(aName,KEntryAttMustBeFile,ETrue,dir,entry); |
|
442 const TRomEntry* pE = (TRomEntry*)entry; |
|
443 TInt size=pE->iSize; |
|
444 |
|
445 const TText8* baseAddress = (const TText8*)pE->iAddressLin; |
|
446 |
|
447 if (size>=(aPos+aLength)) //|| (size>aPos) |
|
448 { |
|
449 TPtrC8 section((baseAddress+aPos),aLength); |
|
450 aMessage.WriteL(0,section,0); |
|
451 } |
|
452 else if (size>aPos) |
|
453 { |
|
454 aLength=(size-aPos); |
|
455 TPtrC8 section((baseAddress+aPos),aLength); |
|
456 aMessage.WriteL(0,section,0); |
|
457 } |
|
458 else |
|
459 User::Leave(KErrEof); |
|
460 |
|
461 } |
|
462 |
|
463 |
|
464 |
|
465 void CRomMountCB::GetShortNameL(const TDesC& /*aLongName*/,TDes& /*aShortName*/) |
|
466 // |
|
467 // Return the short name associated with aLongName |
|
468 // Assumes all rom names are 8.3 |
|
469 // |
|
470 { |
|
471 |
|
472 User::Leave(KErrNotSupported); |
|
473 } |
|
474 |
|
475 void CRomMountCB::GetLongNameL(const TDesC& /*aShortName*/,TDes& /*aLongName*/) |
|
476 // |
|
477 // Return the short name associated with aLongName |
|
478 // Assumes all rom names are 8.3 |
|
479 // |
|
480 { |
|
481 |
|
482 User::Leave(KErrNotSupported); |
|
483 } |
|
484 |
|
485 TInt CRomMountCB::GetInterface(TInt aInterfaceId,TAny*& aInterface,TAny* aInput) |
|
486 // |
|
487 // Access the specified interface; behaviour is interface-specific |
|
488 // |
|
489 { |
|
490 switch(aInterfaceId) |
|
491 { |
|
492 case (CMountCB::EFileAccessor): |
|
493 { |
|
494 ((CMountCB::MFileAccessor*&) aInterface) = this; |
|
495 return KErrNone; |
|
496 } |
|
497 default: |
|
498 return (CMountCB::GetInterface(aInterfaceId,aInterface,aInput)); |
|
499 } |
|
500 } |
|
501 |
|
502 TInt CRomMountCB::GetFileUniqueId(const TDesC& /* aName */, TInt64& aUniqueId) |
|
503 { |
|
504 // Get unique identifier for the file - for ROM File System will just return zero |
|
505 aUniqueId = MAKE_TINT64(0,0); |
|
506 return KErrNone; |
|
507 } |
|
508 |
|
509 TInt CRomMountCB::Spare3(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/) |
|
510 { |
|
511 return KErrNotSupported; |
|
512 } |
|
513 |
|
514 TInt CRomMountCB::Spare2(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/) |
|
515 { |
|
516 return KErrNotSupported; |
|
517 } |
|
518 |
|
519 TInt CRomMountCB::Spare1(TInt /*aVal*/, TAny* /*aPtr1*/, TAny* /*aPtr2*/) |
|
520 { |
|
521 return KErrNotSupported; |
|
522 } |
|
523 |
|
524 |
|
525 CRomFileCB::CRomFileCB(const CRom* aRom) |
|
526 // |
|
527 // Constructor |
|
528 // |
|
529 : iRom(aRom) |
|
530 { |
|
531 } |
|
532 |
|
533 void CRomFileCB::ReadL(TInt aPos,TInt& aLength,const TAny* aTrg,const RMessagePtr2& aMessage) |
|
534 // |
|
535 // Read from the file. |
|
536 // |
|
537 { |
|
538 |
|
539 __PRINT(Print(_L("CRomFileCB::ReadL"))); |
|
540 |
|
541 if (aPos>=iSize) |
|
542 { |
|
543 TPtrC8 nullBuf(NULL,0); |
|
544 aMessage.WriteL(0,nullBuf,0); |
|
545 aLength=0; |
|
546 } |
|
547 else |
|
548 { |
|
549 TInt len=Min((iSize-aPos),aLength); |
|
550 TPtrC8 romBuf(iBase+aPos,len); |
|
551 // thread->WriteL(aTrg,romBuf,0); |
|
552 aMessage.WriteL(0,romBuf,0); |
|
553 aLength=len; |
|
554 } |
|
555 } |
|
556 |
|
557 void CRomFileCB::WriteL(TInt /*aPos*/,TInt& /*aLength*/,const TAny* /*aDes*/,const RMessagePtr2& /*aMessage*/) |
|
558 // |
|
559 // Write to the file. |
|
560 // |
|
561 { |
|
562 |
|
563 User::Leave(KErrAccessDenied); |
|
564 } |
|
565 |
|
566 void CRomFileCB::RenameL(const TDesC& /*aDes*/) |
|
567 // |
|
568 // Rename the file. |
|
569 // |
|
570 { |
|
571 |
|
572 User::Leave(KErrAccessDenied); |
|
573 } |
|
574 |
|
575 void CRomFileCB::SetSizeL(TInt /*aSize*/) |
|
576 // |
|
577 // Set the file size. |
|
578 // |
|
579 { |
|
580 |
|
581 User::Leave(KErrAccessDenied); |
|
582 } |
|
583 |
|
584 void CRomFileCB::SetEntryL(const TTime& /*aTime*/,TUint /*aMask*/,TUint /*aVal*/) |
|
585 // |
|
586 // Set the entry's attributes and modified time. |
|
587 // |
|
588 { |
|
589 |
|
590 User::Leave(KErrAccessDenied); |
|
591 } |
|
592 |
|
593 void CRomFileCB::FlushAllL() |
|
594 // |
|
595 // Commit any buffered date to the media. |
|
596 // |
|
597 { |
|
598 |
|
599 User::Leave(KErrAccessDenied); |
|
600 } |
|
601 |
|
602 void CRomFileCB::FlushDataL() |
|
603 // |
|
604 // Commit any buffered date to the media. |
|
605 // |
|
606 { |
|
607 |
|
608 User::Leave(KErrAccessDenied); |
|
609 } |
|
610 |
|
611 TInt CRomFileCB::Address(TInt& aPos) const |
|
612 // |
|
613 // Return address of the file at aPos. Default implementation. |
|
614 // |
|
615 { |
|
616 |
|
617 if (aPos>=iSize) |
|
618 return(KErrEof); |
|
619 aPos=(TInt)(iBase+aPos); |
|
620 return(KErrNone); |
|
621 } |
|
622 |
|
623 CRomDirCB::CRomDirCB(const CRom* aRom) |
|
624 // |
|
625 // Constructor |
|
626 // |
|
627 : iRom(aRom) |
|
628 { |
|
629 } |
|
630 |
|
631 CRomDirCB::~CRomDirCB() |
|
632 // |
|
633 // Destruct |
|
634 // |
|
635 { |
|
636 |
|
637 delete iMatch; |
|
638 } |
|
639 |
|
640 TBool CRomDirCB::MatchUid() |
|
641 // |
|
642 // Match the uid ? |
|
643 // |
|
644 { |
|
645 |
|
646 if (iUidType[0]!=TUid::Null() || iUidType[1]!=TUid::Null() || iUidType[2]!=TUid::Null()) |
|
647 return(ETrue); |
|
648 return(EFalse); |
|
649 } |
|
650 |
|
651 LOCAL_C TBool CompareUid(const TUidType& aUidTrg, const TUidType& aUidSuitor) |
|
652 // |
|
653 // Compare the suitor to the target pattern |
|
654 // |
|
655 { |
|
656 |
|
657 if (aUidTrg[0]!=TUid::Null() && aUidTrg[0]!=aUidSuitor[0]) |
|
658 return(EFalse); |
|
659 if (aUidTrg[1]!=TUid::Null() && aUidTrg[1]!=aUidSuitor[1]) |
|
660 return(EFalse); |
|
661 if (aUidTrg[2]!=TUid::Null() && aUidTrg[2]!=aUidSuitor[2]) |
|
662 return(EFalse); |
|
663 return(ETrue); |
|
664 } |
|
665 |
|
666 void CRomDirCB::ReadL(TEntry& anEntry) |
|
667 // |
|
668 // Read the next entry from the directory. |
|
669 // |
|
670 { |
|
671 |
|
672 CRomMountCB& mount=(CRomMountCB&)Mount(); |
|
673 const TRomEntry* pE; |
|
674 FOREVER |
|
675 { |
|
676 // |
|
677 //May be called with wildcards in the path, so we need |
|
678 //to call the slow, sequential FindL |
|
679 // |
|
680 if (!iPending) |
|
681 mount.FindL(*iMatch,iAtt,iDir,iNext,KErrEof); |
|
682 iPending=EFalse; |
|
683 pE = (const TRomEntry*)iNext; |
|
684 iEntry.iName.Des().Copy((TText*)&pE->iName[0],pE->iNameLength); |
|
685 iEntry.iAtt=pE->iAtt; |
|
686 iEntry.iSize=pE->iSize; |
|
687 iEntry.iModified=RomHeader().iTime; |
|
688 anEntry=iEntry; |
|
689 if (MatchUid()) |
|
690 { |
|
691 mount.ReadUidL(pE->iAddressLin,anEntry); |
|
692 if (CompareUid(iUidType,anEntry.iType)) |
|
693 break; |
|
694 } |
|
695 else |
|
696 break; |
|
697 } |
|
698 if (iAtt&KEntryAttAllowUid && (anEntry.iAtt&KEntryAttDir)==0 && MatchUid()==EFalse) |
|
699 mount.ReadUidL(pE->iAddressLin,anEntry); |
|
700 } |
|
701 |
|
702 void CRomDirCB::SetDir(TLinAddr aDir,TLinAddr anEntry,const TDesC& aName) |
|
703 // |
|
704 // Set the directory and entry that we are on after open. |
|
705 // |
|
706 { |
|
707 |
|
708 iDir=aDir; |
|
709 iNext=anEntry; |
|
710 iMatch=aName.AllocL(); |
|
711 iPending=(anEntry!=NULL); |
|
712 } |
|
713 |
|
714 CRom::CRom() |
|
715 // |
|
716 // Constructor |
|
717 // |
|
718 { |
|
719 } |
|
720 |
|
721 CRom::~CRom() |
|
722 // |
|
723 // Destruct |
|
724 // |
|
725 { |
|
726 } |
|
727 |
|
728 TInt CRom::Install() |
|
729 // |
|
730 // Install the file system. |
|
731 // |
|
732 { |
|
733 |
|
734 iVersion=TVersion(KF32MajorVersionNumber,KF32MinorVersionNumber,KF32BuildVersionNumber); |
|
735 TPtrC name=_L("Rom"); |
|
736 return(SetName(&name)); |
|
737 } |
|
738 |
|
739 CMountCB* CRom::NewMountL() const |
|
740 // |
|
741 // Create a new mount control block. |
|
742 // |
|
743 { |
|
744 |
|
745 return(new(ELeave) CRomMountCB(this)); |
|
746 } |
|
747 |
|
748 CFileCB* CRom::NewFileL() const |
|
749 // |
|
750 // Create a new file. |
|
751 // |
|
752 { |
|
753 |
|
754 return(new(ELeave) CRomFileCB(this)); |
|
755 } |
|
756 |
|
757 CDirCB* CRom::NewDirL() const |
|
758 // |
|
759 // Create a new directory lister. |
|
760 // |
|
761 { |
|
762 |
|
763 return(new(ELeave) CRomDirCB(this)); |
|
764 } |
|
765 |
|
766 CFormatCB* CRom::NewFormatL() const |
|
767 // |
|
768 // Create a new media formatter. |
|
769 // |
|
770 { |
|
771 |
|
772 User::Leave(KErrAccessDenied); |
|
773 return(NULL); |
|
774 } |
|
775 |
|
776 void CRom::DriveInfo(TDriveInfo& anInfo,TInt /*aDriveNumber*/) const |
|
777 // |
|
778 // Return the drive info. |
|
779 // |
|
780 { |
|
781 anInfo.iDriveAtt=KDriveAttRom|KDriveAttInternal; |
|
782 anInfo.iMediaAtt=KMediaAttWriteProtected; |
|
783 anInfo.iType=EMediaRom; |
|
784 } |
|
785 |
|
786 GLDEF_C void InstallRomFileSystemL() |
|
787 // |
|
788 // Create the ROM file system. |
|
789 // |
|
790 { |
|
791 |
|
792 CFileSystem* pS=new(ELeave) CRom; |
|
793 CleanupStack::PushL(pS); |
|
794 User::LeaveIfError(InstallFileSystem(pS,RLibrary())); |
|
795 CleanupStack::Pop(1, pS); |
|
796 } |
|
797 |
|
798 GLDEF_C const TRomHeader *RomHeader(CFileSystem *aFsys) |
|
799 // |
|
800 // Return the ROM header |
|
801 // |
|
802 { |
|
803 |
|
804 return &((CRom *)aFsys)->RomHeader(); |
|
805 } |
|
806 |