Dynamic extension of static device drivers

G - Physics – 06 – F

Patent

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G06F 9/00 (2006.01) G06F 13/10 (2006.01)

Patent

CA 2231937

A method of changing the functionality of a statically bound device driver, by dynamically extending the static device driver using a registered driver extension. The static device driver has a plurality of handlers or functions (such as input/output functions) used to control a device that is connected to or part of the computer system, and the driver extension modifies at least one of these functions, although it can be used to change several, or even all, of the functions. In the embodiment wherein the computer system is a UNIX-type workstation having a kernel residing in the memory, the static device driver is loaded in the kernel and is dynamically extended by providing at least one entry point for the driver extension.

Méthode permettant de modifier la fonctionnalité d'un pilote de périphérique statique, en le prolongeant dynamiquement au moyen d'une extension de pilote enregistrée. Le pilote de périphérique statique comprend un certain nombre de modules de traitement ou de fonctions (p. ex. d'entrée/sortie) servant à commander un périphérique connecté ou intégré au système informatique. L'extension modifie au moins une de ces fonctions, mais elle permet d'en modifier plusieurs, ou même de les modifier toutes. Dans la version où le système informatique est un poste de travail de type UNIX à noyau résidant en mémoire, le pilote de périphérique statique est chargé dans le noyau et prolongé dynamiquement au moyen d'au moins un point d'entrée pour l'extension de pilote.

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