US Patent:
20080306954, Dec 11, 2008
Inventors:
John M. Hornqvist - Cupertino CA, US
International Classification:
G06F 17/30
Abstract:
Methods, systems and computer readable media which use permissions checking when deciding whether to allow access to a file are described. In one exemplary embodiment, a method includes receiving a notification of a change of permissions of a directory in a hierarchical file system and determining, in response to the notification, whether to update partially a permissions cache which is used in screening access based on permissions, such as access to search results. The determining may include a comparison of an identifier of the directory to a data structure of cached directories which have files represented in the permissions cache.