Long description

The figure consists of a rectangular block labeled Virtual File System. Three blocks are connected to the Virtual File System and labeled File system 1, Cache, and FS 2. File system 1 consists of four sub-blocks labeled Regular file, Block special file, Char special file, and Network socket. Two blocks are connected to the Regular file block and it is labeled I bar O scheduler and Block device driver. Two blocks are connected to the Block special file block and it is labeled Optional line discipline and Char device driver. Two blocks are connected to the Network socket Block labeled Protocol drivers and Network device drivers.