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:
Jan. 06, 2015
Filed:
Sep. 15, 2012
Russell A. Blaine, San Francisco, CA (US);
Timothy P. Marsland, Half Moon Bay, CA (US);
Benjamin H. Nham, San Francisco, CA (US);
Adam C. Swift, San Jose, CA (US);
Benjamin C. Trumbull, San Jose, CA (US);
Umesh S. Vaishampayan, Santa Clara, CA (US);
Russell A. Blaine, San Francisco, CA (US);
Timothy P. Marsland, Half Moon Bay, CA (US);
Benjamin H. Nham, San Francisco, CA (US);
Adam C. Swift, San Jose, CA (US);
Benjamin C. Trumbull, San Jose, CA (US);
Umesh S. Vaishampayan, Santa Clara, CA (US);
Other;
Abstract
Guarded file access operations are provided for creating and using guarded file descriptors, which can detect and prevent erroneous file access operations in computer programs. A file descriptor can be associated with a guard identifier to create a guarded file descriptor. The association can be established when the file is opened, and can be maintained independently of the computer program, which ordinarily maintains its own association between files, file descriptors, and guard identifiers. Subsequent file operations using the guarded file descriptor check that the guard identifier previously associated with that file descriptor is presented, and generate errors without performing the requested file operations if the correct guard identifier is not presented. This check serves as a validation of the computer program's use of file descriptors. An error and stack trace can be generated for use in analyzing a cause of the guard violation.