Block Devices

Block Devices - character device? 1/31/12 3 Network Devices...

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1/31/12 1 Block Devices Block device - transfers blocks of data (e.g., Disk device) Commands: read, write, seek (if random access device)
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1/31/12 2 Character Devices Character device - transfers byte by byte (e.g., Keyboard) Commands: get, put one character Libraries can built on top of this device which provide line-at-a time access with buffering and editing services, etc Can block device be implemented using
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Unformatted text preview: character device? 1/31/12 3 Network Devices Network socket interface Commands; create socket, connect local socket to remote address, select information from a socket Other interfaces: half-duplex pipes, full-duplex fifos, message queues, sockets (UNIX) 1/31/12 4 I/O Software Layers of the I/O system and the main functions of each layer...
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Block Devices - character device? 1/31/12 3 Network Devices...

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