A method for providing user global object name space in a...

G - Physics – 06 – F

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G06F 9/455 (2006.01) G06F 9/48 (2006.01)

Patent

CA 2234405

A method, suitable for use in client/server system, which allows multiple copies of a single-user application to run simultaneously in a multi-user operating system without modification of the single-user program, by modifying existing operating system methods used for object name creation, lookup, and deletion. The method creates a user global context by labeling each instance of the single-user application with a user identifier (name) that defines a single-user name space in which each labeled object is only available to the named user. In addition, the single-user server process is allowed to impersonate the client for allowing the server to access the named resources of the single-user name space. A coexisting system global context is also created by marking system global named resources.

La présente invention porte sur un procédé utilisable dans un système client/serveur, qui permet d'effectuer des copies multiples d'une application mono-utilisateur pour fonctionner simultanément dans un système d'exploitation à utilisateurs multiples, sans modification du programme mono-utilisateur, en changeant les méthodes dont le système d'exploitation existant se sert pour créer, consulter ou supprimer les noms d'ojbets. Le procédé crée un contexte-utilisateur global en attribuant à chaque exemple de l'application mono-utilisateur un élément identificateur (nom) qui définit un espace de noms mono-utilisateur au sein duquel chaque objet étiqueté n'est disponible que pour l'utilisateur identifié. Le processus serveur mono-utilisateur est en outre autorisé à usurper l'identité du client afin que le serveur puisse avoir accès aux ressources identifiées de l'espace de noms mono-utilisateur. On crée également un contexte informatique global coexistant en étiquetant les ressources globales identifiées du système.

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