293   jt_file *pMain = 0;  in locateDatabaseHandle()  local
295   for(pMain=g.pList; pMain; pMain=pMain->pNext){  in locateDatabaseHandle()
297     if( (pMain->flags&SQLITE_OPEN_MAIN_DB)  in locateDatabaseHandle()
298      && ((int)strlen(pMain->zName)==nName)  in locateDatabaseHandle()
299      && 0==memcmp(pMain->zName, zJournal, nName)  in locateDatabaseHandle()
300      && ((pMain->eLock>=SQLITE_LOCK_RESERVED) || noLock)  in locateDatabaseHandle()
306   return pMain;  in locateDatabaseHandle()
360 static int openTransaction(jt_file *pMain, jt_file *pJournal){  in openTransaction()  argument
362   sqlite3_file *p = pMain->pReal;  in openTransaction()
365   closeTransaction(pMain);  in openTransaction()
366   aData = sqlite3_malloc(pMain->nPagesize);  in openTransaction()
367   pMain->pWritable = sqlite3BitvecCreate(pMain->nPage);  in openTransaction()
368   pMain->aCksum = sqlite3_malloc(sizeof(u32) * (pMain->nPage + 1));  in openTransaction()
371   if( !pMain->pWritable || !pMain->aCksum || !aData ){  in openTransaction()
373   }else if( pMain->nPage>0 ){  in openTransaction()
383     rc = sqlite3OsRead(p, aData, pMain->nPagesize, 0);  in openTransaction()
388         for(iPg=nDbsize+1; iPg<=pMain->nPage; iPg++){  in openTransaction()
389           sqlite3BitvecSet(pMain->pWritable, iPg);  in openTransaction()
397       sqlite3_int64 iOff = (i64)(iTrunk-1)*pMain->nPagesize;  in openTransaction()
398       rc = sqlite3OsRead(p, aData, pMain->nPagesize, iOff);  in openTransaction()
402         sqlite3BitvecSet(pMain->pWritable, pgno);  in openTransaction()
410       for(ii=0; rc==SQLITE_OK && ii<(int)pMain->nPage; ii++){  in openTransaction()
411         i64 iOff = (i64)(pMain->nPagesize) * (i64)ii;  in openTransaction()
413         rc = sqlite3OsRead(pMain->pReal, aData, pMain->nPagesize, iOff);  in openTransaction()
414         pMain->aCksum[ii] = genCksum(aData, pMain->nPagesize);  in openTransaction()
415         if( ii+1==(int)pMain->nPage && rc==SQLITE_IOERR_SHORT_READ ){  in openTransaction()
433 static int readJournalFile(jt_file *p, jt_file *pMain){  in readJournalFile()  argument
443   aPage = sqlite3_malloc(pMain->nPagesize);  in readJournalFile()
474       nRec = (u32)((iSize-iOff) / (pMain->nPagesize+8));  in readJournalFile()
483         if( pgno>0 && pgno<=pMain->nPage ){  in readJournalFile()
484           if( 0==sqlite3BitvecTest(pMain->pWritable, pgno) ){  in readJournalFile()
485             rc = sqlite3OsRead(pReal, aPage, pMain->nPagesize, iOff+4);  in readJournalFile()
487               u32 cksum = genCksum(aPage, pMain->nPagesize);  in readJournalFile()
488               assert( cksum==pMain->aCksum[pgno-1] );  in readJournalFile()
491           sqlite3BitvecSet(pMain->pWritable, pgno);  in readJournalFile()
493         iOff += (8 + pMain->nPagesize);  in readJournalFile()
522       jt_file *pMain = locateDatabaseHandle(p->zName, 0);  in jtWrite()  local
523       assert( pMain );  in jtWrite()
528         closeTransaction(pMain);  in jtWrite()
533         pMain->nPage = decodeUint32(&z[16]);  in jtWrite()
534         pMain->nPagesize = decodeUint32(&z[24]);  in jtWrite()
535         if( SQLITE_OK!=(rc=openTransaction(pMain, p)) ){  in jtWrite()
570     jt_file *pMain = locateDatabaseHandle(p->zName, 0);  in jtWrite()  local
571     int rc2 = readJournalFile(p, pMain);  in jtWrite()
584     jt_file *pMain = locateDatabaseHandle(p->zName, 0);  in jtTruncate()  local
585     closeTransaction(pMain);  in jtTruncate()
605     jt_file *pMain;                   /* The associated database file */  in jtSync()  local
612     pMain = locateDatabaseHandle(p->zName, 0);  in jtSync()
615     if( pMain && pMain->pWritable ){  in jtSync()
616       pMain->nSync++;  in jtSync()
617       rc = readJournalFile(p, pMain);  in jtSync()
737     jt_file *pMain = locateDatabaseHandle(zPath, 0);  in jtDelete()  local
738     if( pMain ){  in jtDelete()
739       closeTransaction(pMain);  in jtDelete()