Extended file attributes: Difference between revisions

Revision as of 06:00, 7 March 2020

Revision as of 11:13, 26 March 2020

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===OS/2===

In [[OS/2]] version 1.2 and later, the [[High Performance File System]] was designed with extended attributes in mind, but support for them was also retro-fitted on the [[File Allocation Table|FAT]] filesystem of DOS.

For compatibility with other operating systems using a FAT partition, OS/2 attributes are stored inside a single file "{{code|EA DATA. SF}}" located in the root directory. This file is normally inaccessible when an operating system supporting extended attributes manages the disk, but can be freely manipulated under, for example, DOS. Files and directories having extended attributes use one or more [[cluster (file system)|clusters]] inside this file. The logical cluster number of the first used cluster is stored inside the owning file's or directory's [[FAT extended file attributes|directory entry]].<ref name="os2-fat-extended-attributes">{{cite web

| url=http://www.tavi.co.uk/os2pages/eadata.html

| title=Implementation of extended attributes on the FAT file system