851   const struct sqlite3_io_methods *pMethods;  /* Methods for an open file */  member
16639   if( pId->pMethods ){  in sqlite3OsClose()
16640     rc = pId->pMethods->xClose(pId);  in sqlite3OsClose()
16641     pId->pMethods = 0;  in sqlite3OsClose()
16647   return id->pMethods->xRead(id, pBuf, amt, offset);  in sqlite3OsRead()
16651   return id->pMethods->xWrite(id, pBuf, amt, offset);  in sqlite3OsWrite()
16654   return id->pMethods->xTruncate(id, size);  in sqlite3OsTruncate()
16658   return id->pMethods->xSync(id, flags);  in sqlite3OsSync()
16662   return id->pMethods->xFileSize(id, pSize);  in sqlite3OsFileSize()
16666   return id->pMethods->xLock(id, lockType);  in sqlite3OsLock()
16669   return id->pMethods->xUnlock(id, lockType);  in sqlite3OsUnlock()
16673   return id->pMethods->xCheckReservedLock(id, pResOut);  in sqlite3OsCheckReservedLock()
16700   return id->pMethods->xFileControl(id, op, pArg);  in sqlite3OsFileControl()
16703   (void)id->pMethods->xFileControl(id, op, pArg);  in sqlite3OsFileControlHint()
16707   int (*xSectorSize)(sqlite3_file*) = id->pMethods->xSectorSize;  in sqlite3OsSectorSize()
16711   return id->pMethods->xDeviceCharacteristics(id);  in sqlite3OsDeviceCharacteristics()
16714   return id->pMethods->xShmLock(id, offset, n, flags);  in sqlite3OsShmLock()
16717   id->pMethods->xShmBarrier(id);  in sqlite3OsShmBarrier()
16720   return id->pMethods->xShmUnmap(id, deleteFlag);  in sqlite3OsShmUnmap()
16730   return id->pMethods->xShmMap(id, iPage, pgsz, bExtend, pp);  in sqlite3OsShmMap()
16737   return id->pMethods->xFetch(id, iOff, iAmt, pp);  in sqlite3OsFetch()
16740   return id->pMethods->xUnfetch(id, iOff, p);  in sqlite3OsUnfetch()
16771   assert( rc==SQLITE_OK || pFile->pMethods==0 );  in sqlite3OsOpen()
31105     const sqlite3_io_methods *pMethods;   /* Appropriate locking method */
31129         return aMap[i].pMethods;
43150 #define isOpen(pFd) ((pFd)->pMethods!=0)
45159   if( pPager->fd->pMethods ){
45732   if( isOpen(fd) && fd->pMethods->iVersion>=3 ){
46279   assert( pPager->fd->pMethods->iVersion>=3 );
49443   const sqlite3_io_methods *pMethods = pPager->fd->pMethods;
49444   return pPager->exclusiveMode || (pMethods->iVersion>=2 && pMethods->xShmMap);
52640     if( isChanged && pWal->pDbFd->pMethods->iVersion>=3 ){
58329          && (fd = sqlite3PagerFile(pBt->pPager))->pMethods     /* (3) */
64131   if( pFd->pMethods ){
79859     if( pFd->pMethods->iVersion>=3 ){
80514   if( nByte<=(i64)(db->nMaxSorterMmap) && pFd->pMethods->iVersion>=3 ){
82203   if( p->pMethods!=&JournalFileMethods ){
82216   return (p->pMethods!=&JournalFileMethods || ((JournalFile *)p)->pReal!=0);
82476   return pJfd->pMethods==&MemJournalMethods;
132787     }else if( fd->pMethods ){
159231     p->rc = pDb->pMethods->xShmMap(pDb, 0, 32*1024, 0, (void volatile**)&ptr);
159369   p->rc = pWal->pMethods->xRead(pWal, p->aBuf, p->pgsz, iOff);
159373   p->rc = pDb->pMethods->xWrite(pDb, p->aBuf, p->pgsz, iOff);
159383   p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_SHARED);
159385     p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_EXCLUSIVE);
159759             p->rc = pDb->pMethods->xSync(pDb, SQLITE_SYNC_NORMAL);
159764               p->rc = pDb->pMethods->xShmMap(pDb, 0, 32*1024, 0, &ptr);
160229     int (*xShmLock)(sqlite3_file*,int,int,int) = p->pReal->pMethods->xShmLock;
160263     p->pReal->pMethods->xShmUnmap(p->pReal, 0);
160267   rc = p->pReal->pMethods->xClose(p->pReal);
160307       rc = p->pReal->pMethods->xRead(p->pReal, zBuf, iAmt, iOfst);
160343     rc = p->pReal->pMethods->xWrite(p->pReal, zBuf, iAmt, iOfst);
160360   return p->pReal->pMethods->xTruncate(p->pReal, size);
160374   return p->pReal->pMethods->xSync(p->pReal, flags);
160382   return p->pReal->pMethods->xFileSize(p->pReal, pSize);
160399     rc = p->pReal->pMethods->xLock(p->pReal, eLock);
160410   return p->pReal->pMethods->xUnlock(p->pReal, eLock);
160418   return p->pReal->pMethods->xCheckReservedLock(p->pReal, pResOut);
160426   int (*xControl)(sqlite3_file*,int,void*) = p->pReal->pMethods->xFileControl;
160475   return p->pReal->pMethods->xSectorSize(p->pReal);
160483   return p->pReal->pMethods->xDeviceCharacteristics(p->pReal);
160515       rc = p->pReal->pMethods->xShmLock(p->pReal, ofst, n, flags);
160573     rc = p->pReal->pMethods->xShmMap(p->pReal, iRegion, szRegion, isWrite, pp);
160584   p->pReal->pMethods->xShmBarrier(p->pReal);
160601     rc = p->pReal->pMethods->xShmUnmap(p->pReal, delFlag);
160713   if( pFd->pReal->pMethods ){
160717     pFile->pMethods = &rbuvfs_io_methods;
161385   if( fd->pMethods!=0 && sqlite3OsFileControl(fd, 230440, &x)==SQLITE_OK ){