The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2001
Filed:
Apr. 27, 1998
Leo Cohen, Los Angeles, CA (US);
Symantec Corporation, Cupertino, CA (US);
Abstract
The export record of an operating system kernel employing dynamically-linked loading modules (e.g., portable-executable modules) is thunked so as to globally and forcibly redirect service requests from afterwards loaded modules to subclassing routines instead of to original servicing routines of the kernel. The base location of the kernel is determined from an Image_Base entry of its disk-image. An offset storing position in the export record is overwritten with a value equal to the value of the address of the subclassing routine minus the kernel's base address. Use of the thunked export record is forced even for 'bound' external references by altering the time stamp in the kernel's export record to a nonmatching value.