Message-based data processing system that provides checking for

Details Message-based data processing system that provides checking for Message-based data processing system that provides checking for

1992-06-02

1994-05-31

Heckler, Thomas M.

Boots, shoes, and leggings

364DIG1, 3642809, 3642865, G06F 1214

Patent

active

053177460

ABSTRACT:
A data processing system of client/server architecture operating on a message basis comprises client spaces capable of issuing processing requests in the form of messages, and server spaces for executing the processing as requested by checking a request code contained in the message. The request codes are previously classified into client-space dedicated codes and kernel-space dedicated codes. A message communication facility for performing message transfer between the clients and the servers includes a check function for checking whether the message originates in the kernel space when the request code contained in the message is the kernel-space dedicated code. The processing request message issued from a space other than the kernel space by using the kernel space dedicated code is rejected as an error. Security of the system can thus be assured.

REFERENCES:
patent: 4584639 (1986-04-01), Hardy
patent: 5136712 (1992-08-01), Perazzoli, Jr. et al.
patent: 5187790 (1993-02-01), East et al.

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