332   if( pFile->pMethods ){  in tvfsClose()
333     ckfree((char *)pFile->pMethods);  in tvfsClose()
669   if( pFd->pReal->pMethods ){  in tvfsOpen()
670     sqlite3_io_methods *pMethods;  in tvfsOpen()  local
679     pMethods = (sqlite3_io_methods *)ckalloc(nByte);  in tvfsOpen()
680     memcpy(pMethods, &tvfs_io_methods, nByte);  in tvfsOpen()
681     pMethods->iVersion = pFd->pReal->pMethods->iVersion;  in tvfsOpen()
682     if( pMethods->iVersion>pVfs->iVersion ){  in tvfsOpen()
683       pMethods->iVersion = pVfs->iVersion;  in tvfsOpen()
686       pMethods->xShmUnmap = 0;  in tvfsOpen()
687       pMethods->xShmLock = 0;  in tvfsOpen()
688       pMethods->xShmBarrier = 0;  in tvfsOpen()
689       pMethods->xShmMap = 0;  in tvfsOpen()
691     pFile->pMethods = pMethods;  in tvfsOpen()
899     return pReal->pMethods->xShmMap(pReal, iPage, pgsz, isWrite, pp);  in tvfsShmMap()
950     return pReal->pMethods->xShmLock(pReal, ofst, n, flags);  in tvfsShmLock()
1015     pReal->pMethods->xShmBarrier(pReal);  in tvfsShmBarrier()
1032     return pReal->pMethods->xShmUnmap(pReal, deleteFlag);  in tvfsShmUnmap()
1624   rc = pFd->pMethods->xShmLock(pFd, iOffset, n,   in test_vfs_shmlock()
1665   rc = pFd->pMethods->xShmMap(pFd, 0, 32*1024, 0, &pShm);  in test_vfs_set_readmark()