227 static int apndClose(sqlite3_file *pFile){  in apndClose()  argument
228   pFile = ORIGFILE(pFile);  in apndClose()
229   return pFile->pMethods->xClose(pFile);  in apndClose()
236   sqlite3_file *pFile,   in apndRead()  argument
241   ApndFile *paf = (ApndFile *)pFile;  in apndRead()
242   pFile = ORIGFILE(pFile);  in apndRead()
243   return pFile->pMethods->xRead(pFile, zBuf, iAmt, paf->iPgOne+iOfst);  in apndRead()
253   sqlite3_file *pFile,  in apndWriteMark()  argument
260   assert(pFile == ORIGFILE(paf));  in apndWriteMark()
267   if( SQLITE_OK==(rc = pFile->pMethods->xWrite  in apndWriteMark()
268                   (pFile, a, APND_MARK_SIZE, iWriteEnd)) ){  in apndWriteMark()
278   sqlite3_file *pFile,  in apndWrite()  argument
283   ApndFile *paf = (ApndFile *)pFile;  in apndWrite()
286   pFile = ORIGFILE(pFile);  in apndWrite()
289     int rc = apndWriteMark(paf, pFile, iWriteEnd);  in apndWrite()
292   return pFile->pMethods->xWrite(pFile, zBuf, iAmt, paf->iPgOne+iOfst);  in apndWrite()
298 static int apndTruncate(sqlite3_file *pFile, sqlite_int64 size){  in apndTruncate()  argument
299   ApndFile *paf = (ApndFile *)pFile;  in apndTruncate()
300   pFile = ORIGFILE(pFile);  in apndTruncate()
302   if( SQLITE_OK!=apndWriteMark(paf, pFile, size) ) return SQLITE_IOERR;  in apndTruncate()
304   return pFile->pMethods->xTruncate(pFile, paf->iMark+APND_MARK_SIZE);  in apndTruncate()
310 static int apndSync(sqlite3_file *pFile, int flags){  in apndSync()  argument
311   pFile = ORIGFILE(pFile);  in apndSync()
312   return pFile->pMethods->xSync(pFile, flags);  in apndSync()
319 static int apndFileSize(sqlite3_file *pFile, sqlite_int64 *pSize){  in apndFileSize()  argument
320   ApndFile *paf = (ApndFile *)pFile;  in apndFileSize()
328 static int apndLock(sqlite3_file *pFile, int eLock){  in apndLock()  argument
329   pFile = ORIGFILE(pFile);  in apndLock()
330   return pFile->pMethods->xLock(pFile, eLock);  in apndLock()
336 static int apndUnlock(sqlite3_file *pFile, int eLock){  in apndUnlock()  argument
337   pFile = ORIGFILE(pFile);  in apndUnlock()
338   return pFile->pMethods->xUnlock(pFile, eLock);  in apndUnlock()
344 static int apndCheckReservedLock(sqlite3_file *pFile, int *pResOut){  in apndCheckReservedLock()  argument
345   pFile = ORIGFILE(pFile);  in apndCheckReservedLock()
346   return pFile->pMethods->xCheckReservedLock(pFile, pResOut);  in apndCheckReservedLock()
352 static int apndFileControl(sqlite3_file *pFile, int op, void *pArg){  in apndFileControl()  argument
353   ApndFile *paf = (ApndFile *)pFile;  in apndFileControl()
355   pFile = ORIGFILE(pFile);  in apndFileControl()
357   rc = pFile->pMethods->xFileControl(pFile, op, pArg);  in apndFileControl()
367 static int apndSectorSize(sqlite3_file *pFile){  in apndSectorSize()  argument
368   pFile = ORIGFILE(pFile);  in apndSectorSize()
369   return pFile->pMethods->xSectorSize(pFile);  in apndSectorSize()
375 static int apndDeviceCharacteristics(sqlite3_file *pFile){  in apndDeviceCharacteristics()  argument
376   pFile = ORIGFILE(pFile);  in apndDeviceCharacteristics()
377   return pFile->pMethods->xDeviceCharacteristics(pFile);  in apndDeviceCharacteristics()
382   sqlite3_file *pFile,  in apndShmMap()  argument
388   pFile = ORIGFILE(pFile);  in apndShmMap()
389   return pFile->pMethods->xShmMap(pFile,iPg,pgsz,bExtend,pp);  in apndShmMap()
393 static int apndShmLock(sqlite3_file *pFile, int offset, int n, int flags){  in apndShmLock()  argument
394   pFile = ORIGFILE(pFile);  in apndShmLock()
395   return pFile->pMethods->xShmLock(pFile,offset,n,flags);  in apndShmLock()
399 static void apndShmBarrier(sqlite3_file *pFile){  in apndShmBarrier()  argument
400   pFile = ORIGFILE(pFile);  in apndShmBarrier()
401   pFile->pMethods->xShmBarrier(pFile);  in apndShmBarrier()
405 static int apndShmUnmap(sqlite3_file *pFile, int deleteFlag){  in apndShmUnmap()  argument
406   pFile = ORIGFILE(pFile);  in apndShmUnmap()
407   return pFile->pMethods->xShmUnmap(pFile,deleteFlag);  in apndShmUnmap()
412   sqlite3_file *pFile,  in apndFetch()  argument
417   ApndFile *p = (ApndFile *)pFile;  in apndFetch()
421   pFile = ORIGFILE(pFile);  in apndFetch()
422   return pFile->pMethods->xFetch(pFile, iOfst+p->iPgOne, iAmt, pp);  in apndFetch()
426 static int apndUnfetch(sqlite3_file *pFile, sqlite3_int64 iOfst, void *pPage){  in apndUnfetch()  argument
427   ApndFile *p = (ApndFile *)pFile;  in apndUnfetch()
428   pFile = ORIGFILE(pFile);  in apndUnfetch()
429   return pFile->pMethods->xUnfetch(pFile, iOfst+p->iPgOne, pPage);  in apndUnfetch()
441 static sqlite3_int64 apndReadMark(sqlite3_int64 sz, sqlite3_file *pFile){  in apndReadMark()  argument
448   rc = pFile->pMethods->xRead(pFile, a, APND_MARK_SIZE, sz-APND_MARK_SIZE);  in apndReadMark()
466 static int apndIsAppendvfsDatabase(sqlite3_int64 sz, sqlite3_file *pFile){  in apndIsAppendvfsDatabase()  argument
469   sqlite3_int64 iMark = apndReadMark(sz, pFile);  in apndIsAppendvfsDatabase()
475     rc = pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), iMark);  in apndIsAppendvfsDatabase()
491 static int apndIsOrdinaryDatabaseFile(sqlite3_int64 sz, sqlite3_file *pFile){  in apndIsOrdinaryDatabaseFile()  argument
493   if( apndIsAppendvfsDatabase(sz, pFile) /* rule 2 */  in apndIsOrdinaryDatabaseFile()
495    || SQLITE_OK!=pFile->pMethods->xRead(pFile, zHdr, sizeof(zHdr), 0)  in apndIsOrdinaryDatabaseFile()
510   sqlite3_file *pFile,  in apndOpen()  argument
514   ApndFile *pApndFile = (ApndFile*)pFile;  in apndOpen()
515   sqlite3_file *pBaseFile = ORIGFILE(pFile);  in apndOpen()
524     return pBaseVfs->xOpen(pBaseVfs, zName, pFile, flags, pOutFlags);  in apndOpen()
527   pFile->pMethods = &apnd_io_methods;  in apndOpen()
538     pFile->pMethods = 0;  in apndOpen()
548   pApndFile->iPgOne = apndReadMark(sz, pFile);  in apndOpen()
556     pFile->pMethods = 0;  in apndOpen()