443   KVVfsFile *pFile,      /* Store decoding in pFile->aJrnl */  in kvvfsDecodeJournal()  argument
455   sqlite3_free(pFile->aJrnl);  in kvvfsDecodeJournal()
456   pFile->aJrnl = sqlite3_malloc64( n );  in kvvfsDecodeJournal()
457   if( pFile->aJrnl==0 ){  in kvvfsDecodeJournal()
458     pFile->nJrnl = 0;  in kvvfsDecodeJournal()
461   pFile->nJrnl = n;  in kvvfsDecodeJournal()
462   n = kvvfsDecode(zTxt+i, pFile->aJrnl, pFile->nJrnl);  in kvvfsDecodeJournal()
463   if( n<pFile->nJrnl ){  in kvvfsDecodeJournal()
464     sqlite3_free(pFile->aJrnl);  in kvvfsDecodeJournal()
465     pFile->aJrnl = 0;  in kvvfsDecodeJournal()
466     pFile->nJrnl = 0;  in kvvfsDecodeJournal()
473 static sqlite3_int64 kvvfsReadFileSize(KVVfsFile *pFile){  in kvvfsReadFileSize()  argument
476   sqlite3KvvfsMethods.xRead(pFile->zClass, "sz", zData, sizeof(zData)-1);  in kvvfsReadFileSize()
479 static int kvvfsWriteFileSize(KVVfsFile *pFile, sqlite3_int64 sz){  in kvvfsWriteFileSize()  argument
482   return sqlite3KvvfsMethods.xWrite(pFile->zClass, "sz", zData);  in kvvfsWriteFileSize()
491   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsClose()  local
493   SQLITE_KV_LOG(("xClose %s %s\n", pFile->zClass,   in kvvfsClose()
494              pFile->isJournal ? "journal" : "db"));  in kvvfsClose()
495   sqlite3_free(pFile->aJrnl);  in kvvfsClose()
508   KVVfsFile *pFile = (KVVfsFile*)pProtoFile;  in kvvfsReadJrnl()  local
509   assert( pFile->isJournal );  in kvvfsReadJrnl()
510   SQLITE_KV_LOG(("xRead('%s-journal',%d,%lld)\n", pFile->zClass, iAmt, iOfst));  in kvvfsReadJrnl()
511   if( pFile->aJrnl==0 ){  in kvvfsReadJrnl()
512     int szTxt = kvstorageRead(pFile->zClass, "jrnl", 0, 0);  in kvvfsReadJrnl()
519     kvstorageRead(pFile->zClass, "jrnl", aTxt, szTxt+1);  in kvvfsReadJrnl()
520     kvvfsDecodeJournal(pFile, aTxt, szTxt);  in kvvfsReadJrnl()
522     if( pFile->aJrnl==0 ) return SQLITE_IOERR;  in kvvfsReadJrnl()
524   if( iOfst+iAmt>pFile->nJrnl ){  in kvvfsReadJrnl()
527   memcpy(zBuf, pFile->aJrnl+iOfst, iAmt);  in kvvfsReadJrnl()
540   KVVfsFile *pFile = (KVVfsFile*)pProtoFile;  in kvvfsReadDb()  local
547   SQLITE_KV_LOG(("xRead('%s-db',%d,%lld)\n", pFile->zClass, iAmt, iOfst));  in kvvfsReadDb()
555     pFile->szPage = iAmt;  in kvvfsReadDb()
561   got = sqlite3KvvfsMethods.xRead(pFile->zClass, zKey, aData, sizeof(aData)-1);  in kvvfsReadDb()
597   KVVfsFile *pFile = (KVVfsFile*)pProtoFile;  in kvvfsWriteJrnl()  local
599   SQLITE_KV_LOG(("xWrite('%s-journal',%d,%lld)\n", pFile->zClass, iAmt, iOfst));  in kvvfsWriteJrnl()
601   if( pFile->aJrnl==0 || pFile->nJrnl<iEnd ){  in kvvfsWriteJrnl()
602     char *aNew = sqlite3_realloc(pFile->aJrnl, iEnd);  in kvvfsWriteJrnl()
606     pFile->aJrnl = aNew;  in kvvfsWriteJrnl()
607     if( pFile->nJrnl<iOfst ){  in kvvfsWriteJrnl()
608       memset(pFile->aJrnl+pFile->nJrnl, 0, iOfst-pFile->nJrnl);  in kvvfsWriteJrnl()
610     pFile->nJrnl = iEnd;  in kvvfsWriteJrnl()
612   memcpy(pFile->aJrnl+iOfst, zBuf, iAmt);  in kvvfsWriteJrnl()
625   KVVfsFile *pFile = (KVVfsFile*)pProtoFile;  in kvvfsWriteDb()  local
629   SQLITE_KV_LOG(("xWrite('%s-db',%d,%lld)\n", pFile->zClass, iAmt, iOfst));  in kvvfsWriteDb()
632   assert( pFile->szPage<0 || pFile->szPage==iAmt );  in kvvfsWriteDb()
633   pFile->szPage = iAmt;  in kvvfsWriteDb()
637   if( sqlite3KvvfsMethods.xWrite(pFile->zClass, zKey, aData) ){  in kvvfsWriteDb()
640   if( iOfst+iAmt > pFile->szDb ){  in kvvfsWriteDb()
641     pFile->szDb = iOfst + iAmt;  in kvvfsWriteDb()
650   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsTruncateJrnl()  local
651   SQLITE_KV_LOG(("xTruncate('%s-journal',%lld)\n", pFile->zClass, size));  in kvvfsTruncateJrnl()
653   sqlite3KvvfsMethods.xDelete(pFile->zClass, "jrnl");  in kvvfsTruncateJrnl()
654   sqlite3_free(pFile->aJrnl);  in kvvfsTruncateJrnl()
655   pFile->aJrnl = 0;  in kvvfsTruncateJrnl()
656   pFile->nJrnl = 0;  in kvvfsTruncateJrnl()
660   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsTruncateDb()  local
661   if( pFile->szDb>size  in kvvfsTruncateDb()
662    && pFile->szPage>0   in kvvfsTruncateDb()
663    && (size % pFile->szPage)==0  in kvvfsTruncateDb()
667     SQLITE_KV_LOG(("xTruncate('%s-db',%lld)\n", pFile->zClass, size));  in kvvfsTruncateDb()
668     pgno = 1 + size/pFile->szPage;  in kvvfsTruncateDb()
669     pgnoMax = 2 + pFile->szDb/pFile->szPage;  in kvvfsTruncateDb()
672       sqlite3KvvfsMethods.xDelete(pFile->zClass, zKey);  in kvvfsTruncateDb()
675     pFile->szDb = size;  in kvvfsTruncateDb()
676     return kvvfsWriteFileSize(pFile, size) ? SQLITE_IOERR : SQLITE_OK;  in kvvfsTruncateDb()
686   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsSyncJrnl()  local
688   SQLITE_KV_LOG(("xSync('%s-journal')\n", pFile->zClass));  in kvvfsSyncJrnl()
689   if( pFile->nJrnl<=0 ){  in kvvfsSyncJrnl()
692   zOut = sqlite3_malloc64( pFile->nJrnl*2 + 50 );  in kvvfsSyncJrnl()
696   n = pFile->nJrnl;  in kvvfsSyncJrnl()
703   kvvfsEncode(pFile->aJrnl, pFile->nJrnl, &zOut[i]);  in kvvfsSyncJrnl()
704   i = sqlite3KvvfsMethods.xWrite(pFile->zClass, "jrnl", zOut);  in kvvfsSyncJrnl()
716   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsFileSizeJrnl()  local
717   SQLITE_KV_LOG(("xFileSize('%s-journal')\n", pFile->zClass));  in kvvfsFileSizeJrnl()
718   *pSize = pFile->nJrnl;  in kvvfsFileSizeJrnl()
722   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsFileSizeDb()  local
723   SQLITE_KV_LOG(("xFileSize('%s-db')\n", pFile->zClass));  in kvvfsFileSizeDb()
724   if( pFile->szDb>=0 ){  in kvvfsFileSizeDb()
725     *pSize = pFile->szDb;  in kvvfsFileSizeDb()
727     *pSize = kvvfsReadFileSize(pFile);  in kvvfsFileSizeDb()
736   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsLock()  local
737   assert( !pFile->isJournal );  in kvvfsLock()
738   SQLITE_KV_LOG(("xLock(%s,%d)\n", pFile->zClass, eLock));  in kvvfsLock()
741     pFile->szDb = kvvfsReadFileSize(pFile);  in kvvfsLock()
750   KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsUnlock()  local
751   assert( !pFile->isJournal );  in kvvfsUnlock()
752   SQLITE_KV_LOG(("xUnlock(%s,%d)\n", pFile->zClass, eLock));  in kvvfsUnlock()
754     pFile->szDb = -1;  in kvvfsUnlock()
778     KVVfsFile *pFile = (KVVfsFile *)pProtoFile;  in kvvfsFileControlDb()  local
780     SQLITE_KV_LOG(("xSync('%s-db')\n", pFile->zClass));  in kvvfsFileControlDb()
781     if( pFile->szDb>0 && 0!=kvvfsWriteFileSize(pFile, pFile->szDb) ){  in kvvfsFileControlDb()
792 static int kvvfsSectorSize(sqlite3_file *pFile){  in kvvfsSectorSize()  argument
815   KVVfsFile *pFile = (KVVfsFile*)pProtoFile;  in kvvfsOpen()  local
821     pFile->isJournal = 0;  in kvvfsOpen()
822     pFile->base.pMethods = &kvvfs_db_io_methods;  in kvvfsOpen()
827     pFile->isJournal = 1;  in kvvfsOpen()
828     pFile->base.pMethods = &kvvfs_jrnl_io_methods;  in kvvfsOpen()
833     pFile->zClass = "session";  in kvvfsOpen()
835     pFile->zClass = "local";  in kvvfsOpen()
837   pFile->aJrnl = 0;  in kvvfsOpen()
838   pFile->nJrnl = 0;  in kvvfsOpen()
839   pFile->szPage = -1;  in kvvfsOpen()
840   pFile->szDb = -1;  in kvvfsOpen()