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Transcript
Character Devices ï® A device driver which does not offer random access to fixed blocks of data. ï® A character device driver must register a set of functions which implement the driverâs various file I/O operations. ï® The kernel performs almost no preprocessing of a file read or write request to a character device, but simply passes on the request to the device. ï® The main exception to this rule is the special subset of character device drivers which implement terminal devices, for which the kernel maintains a standard interface. Operating System Concepts 20.48 Silberschatz, Galvin and Gagne ï2002
