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:
Aug. 18, 2009
Filed:
Aug. 31, 2005
William Todd Boyd, Poughkeepsie, NY (US);
John Lewis Hufferd, San Jose, CA (US);
Agustin Mena, Iii, Austin, TX (US);
Renato J. Recio, Austin, TX (US);
Madeline Vega, Austin, TX (US);
William Todd Boyd, Poughkeepsie, NY (US);
John Lewis Hufferd, San Jose, CA (US);
Agustin Mena, III, Austin, TX (US);
Renato J. Recio, Austin, TX (US);
Madeline Vega, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Enabling user space middleware or applications to pass file name based storage requests directly to a physical I/O Adapter without run-time involvement from the local Operating System (OS)is provided. A mechanism is provided for using a file protection table (FPT) data structure, which may include a file name protection table (FNPT) and file extension protection table (FEPT), to control user space and out of user space Input/Output (I/O) operations. The FNPT has an entry for each file managed by the OS' file system and points to a segment of the FEPT. Each entry in the FEPT may include a protection domain, along with other protection table context information, against which I/O requests may be checked to determine if an application instance that submitted the I/O requests may access the file identified in the I/O requests.