FILE SYSTEM DIRECTORY ATTRIBUTE CORRECTION

• US 20130117293A1
• Filed: 11/02/2012
• Published: 05/09/2013
• Est. Priority Date: 11/03/2011
• Status: Active Grant

• Current Assignee: Open Invention Network LLC
• Original Assignee: OSR Open Systems Resources, Inc.
• Inventors: Mason, W. Anthony, Noone, Scott J., Widdowson, Roderick David Wolfe
• Granted Patent: US 8,903,874 B2
• Time in Patent Office: Days
• US Class Current: 707/758
• CPC Class Codes: G06F 16/116 Details of conversion of file system types or formats
• CPC Class Codes: G06F 16/13 File access structures, e.g. distributed indices arrangements of input from, or output to, record carriers G06F3/06
• CPC Class Codes: G06F 16/16 File or folder operations, e.g. details of user interfaces specifically adapted to file systems

Abstract

Various embodiments are directed to systems and methods for facilitating file attribute correction. A computer system may receive a request to enumerate a first directory stored on a data storage. For a first file in the first directory, the computer system may determine that the first file has a corresponding first entry in an attribute cache, determine that the first entry for the first file indicates native file attributes that match the first file, and return for the first file at least one logical attribute indicated by the first entry.

Claims

1. A computer-implemented system comprising:

a computer system, the computer system comprising at least one processor and operatively associated data storage, wherein the data storage comprises a plurality of directories, wherein the data storage comprises an attribute cache, and wherein the computer system is programmed to;

receive a request to enumerate a first directory stored on the data storage;

for a first file in the first directory;

determine that the first file has a corresponding first entry in the attribute cache;

determine that the first entry for the first file indicates native file attributes that match the first file;

return for the first file at least one logical attribute indicated by the first entry.

2. The system of claim 1, wherein the computer system is further programmed to determine whether the first file is tagged to indicate that at least one first file native attribute does not match at least one first file logical attribute.

3. The system of claim 1, wherein the computer system is further programmed to, for a second file in the first directory:

determine that the second file does not have a corresponding entry in the attribute cache;

determine that at least one second file native attribute of the second file does not match at least one second file logical attribute for the second file;

derive the at least one second file logical attribute for the second file;

generate a second entry in the attribute cache corresponding to the second file, wherein the second entry indicates native attribute values for the second file and the at least one derived second file logical attribute; and

return for the second file at least the second file logical attribute.

4. The system of claim 3, wherein the computer system is further programmed to tag the second file to indicate that the at least one second file native attribute does not match the at least one second file logical attribute.

5. The system of claim 4, wherein the tagging of the second file comprises at least one of:

renaming the second file with an algorithmically-determined name;

modifying a native size of the second file;

adding an alternate data stream to the second file;

modifying at least one time stamp of the second file.

6. The system of claim 1, wherein the computer system is further programmed to, for a third file in the first directory:

determine that the third file does not have a corresponding entry in the attribute cache;

determine that the third file is tagged to indicate that at least one third file native attribute does not match at least one third file logical attribute;

derive the third file logical attribute for the third file;

generate a third entry in the attribute cache corresponding to the third file, wherein the third entry indicates native attribute values for the third file and the derived third file logical attribute; and

return for the third file at least the third file logical attribute.

7. The system of claim 1, wherein the attribute cache is at least partially stored at a memory device of the data storage.

8. The system of claim 1, wherein the attribute cache is at least partially stored at a persistent storage device of the data storage.

9. The system of claim 1, wherein the attribute cache comprises a plurality of attribute cache files.

10. The system of claim 9, wherein each of the plurality of attribute cache files comprises entries for files in a first directory only.

11. The system of claim 1, wherein the computer system is further programmed to:

select the first directory as a frequently enumerated directory; and

pre-populate the attribute cache for the first directory with entries for a plurality of files in the first directory.

12. A computer-implemented method comprising:

receiving, by a computer system, a request to enumerate a first directory stored on the data storage, wherein the computer system comprises at least one processor and operatively associated data storage, wherein the data storage comprises a plurality of directories, wherein the data storage comprises an attribute cache;

for a first file in the first directory, determining by the computer system that the first file has a corresponding first entry in the attribute cache;

for the first file in the file directory, determining by the computer system that the first entry for the first file indicates native file attributes that match the first file;

for the first file in the file directory, returning by the computer system and for the first file at least one logical attribute indicated by the first entry.

13. The method of claim 12, further comprising determining whether the first file is tagged to indicate that at least one first file native attribute does not match at least one first file logical attribute.

14. The method of claim 12, further comprising, for a second file in the first directory:

determining that the second file does not have a corresponding entry in the attribute cache;

determining that at least one second file native attribute of the second file does not match at least one second file logical attribute for the second file;

deriving the at least one second file logical attribute for the second file;

generating a second entry in the attribute cache corresponding to the second file, wherein the second entry indicates native attribute values for the second file and the at least one derived second file logical attribute; and

returning for the second file at least the second file logical attribute.

15. The method of claim 14, further comprising tagging the second file to indicate that the at least one second file native attribute does not match the at least one second file logical attribute.

16. The method of claim 15, wherein the tagging of the second file comprises at least one of:

renaming the second file with an algorithmically-determined name;

modifying a native size of the second file;

adding an alternate data stream to the second file;

modifying at least one time stamp of the second file.

17. A computer-implemented system comprising:

a computer system, the computer system comprising at least one processor and operatively associated data storage, wherein the data storage comprises a plurality of directories, and wherein the computer system is programmed to;

receive a request to enumerate a first directory stored on the data storage;

for a first file in the first directory;

determine that the first file is tagged to indicate that at least one first file native attribute does not match at least one first file logical attribute;

derive the at least one first file logical attribute; and

return for the first file the at least one first file logical attribute.

18. The system of claim 17, wherein deriving the at least one first file logical attribute comprises:

determining that the first file has a corresponding first entry in an attribute cache;

determining that the first entry for the first file indicates native file attributes that match the first file; and

retrieving from the first entry the at least one first logical attribute.

19. The system of claim 17, wherein deriving the at least one first file logical attribute further comprises performing at least one transformation on the first file.

20. A computer-implemented method comprising:

receiving, by a computer system, a request to enumerate a first directory, wherein the computer system comprises at least one processor and operatively associated data storage, wherein the data storage comprises a plurality of directories including the first directory;

receiving a request to enumerate the first directory stored on the data storage;

for a first file in the first directory;

determining that the first file is tagged to indicate that at least one first file native attribute does not match at least one first file logical attribute;

deriving the at least one first file logical attribute; and

returning for the first file the at least one first file logical attribute.