938   VfslogCsr *pCsr;                /* Newly allocated cursor object */  in vlogOpen()  local
940   pCsr = sqlite3_malloc(sizeof(VfslogCsr));  in vlogOpen()
941   if( !pCsr ) return SQLITE_NOMEM;  in vlogOpen()
942   memset(pCsr, 0, sizeof(VfslogCsr));  in vlogOpen()
943   *ppCursor = &pCsr->base;  in vlogOpen()
966   VfslogCsr *pCsr = (VfslogCsr *)pCursor;  in vlogNext()  local
971   sqlite3_free(pCsr->zTransient);  in vlogNext()
972   pCsr->zTransient = 0;  in vlogNext()
975   if( pCsr->iOffset+nRead<=p->nByte ){  in vlogNext()
977     rc = p->pFd->pMethods->xRead(p->pFd, pCsr->aBuf, nRead, pCsr->iOffset);  in vlogNext()
979     eEvent = get32bits(pCsr->aBuf);  in vlogNext()
984       rc = p->pFd->pMethods->xRead(p->pFd, buf, 4, pCsr->iOffset+nRead);  in vlogNext()
989         rc = p->pFd->pMethods->xRead(p->pFd, zStr, nStr, pCsr->iOffset+nRead);  in vlogNext()
994           int iFileid = get32bits(&pCsr->aBuf[4]);  in vlogNext()
995           if( iFileid>=pCsr->nFile ){  in vlogNext()
996             int nNew = sizeof(pCsr->azFile[0])*(iFileid+1);  in vlogNext()
997             pCsr->azFile = (char **)sqlite3_realloc(pCsr->azFile, nNew);  in vlogNext()
998             nNew -= sizeof(pCsr->azFile[0])*pCsr->nFile;  in vlogNext()
999             memset(&pCsr->azFile[pCsr->nFile], 0, nNew);  in vlogNext()
1000             pCsr->nFile = iFileid+1;  in vlogNext()
1002           sqlite3_free(pCsr->azFile[iFileid]);  in vlogNext()
1003           pCsr->azFile[iFileid] = zStr;  in vlogNext()
1005           pCsr->zTransient = zStr;  in vlogNext()
1011   pCsr->iRowid += 1;  in vlogNext()
1012   pCsr->iOffset += nRead;  in vlogNext()
1017   VfslogCsr *pCsr = (VfslogCsr *)pCursor;  in vlogEof()  local
1019   return (pCsr->iOffset>=p->nByte);  in vlogEof()
1027   VfslogCsr *pCsr = (VfslogCsr *)pCursor;  in vlogFilter()  local
1028   pCsr->iRowid = 0;  in vlogFilter()
1029   pCsr->iOffset = 20;  in vlogFilter()
1039   VfslogCsr *pCsr = (VfslogCsr *)pCursor;  in vlogColumn()  local
1042   val = get32bits(&pCsr->aBuf[4*i]);  in vlogColumn()
1050       char *zStr = pCsr->zTransient;  in vlogColumn()
1051       if( val!=0 && val<(unsigned)pCsr->nFile ){  in vlogColumn()
1052         zStr = pCsr->azFile[val];  in vlogColumn()
1066   VfslogCsr *pCsr = (VfslogCsr *)pCursor;  in vlogRowid()  local
1067   *pRowid = pCsr->iRowid;  in vlogRowid()