Methods for maintaining data and attribute coherency in instances of sharable files
US6611848B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2000 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Jan 26, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods for sharing a file while maintaining consistency among instances of the file managed by a file system are disclosed. One exemplary method includes associating a file consistency protocol with an operating system (O/S). The file consistency protocol maintains file consistency between instances of the file associated with the file system using a set of file consistency protocol bits. The method then includes opening an instance of the file in a shared mode by setting a shared bit in the set of file consistency protocol bits associated with the file. A determination is then made as to the existence of another instance of the file. A shared bit the set of file consistency protocol bits associated with the another file is then set. In accordance with the method, a modification is made to the contents (e.g., data or attributes) of the instance of the file. A modified bit is then set in the set of file consistency protocol bits of the instance of the file. The modified bit is indicative of the modified contents, and an invalid bit is set in the set of file consistency protocol bits of the another file. The invalid bit is indicative of the modified contents of the instance of the f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.