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WebDAV and extended attributes
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WebDAV and extended attributes


  • Subject: WebDAV and extended attributes
  • From: Alan Shouls <email@hidden>
  • Date: Mon, 30 Mar 2009 15:26:57 +0100

Hi,

I am porting a windows WebDAV client to OSX. I am working through some problems with the support of extended attributes, currently supported through "apple double files" - the client does not support extended attributes but the OS cleverly synthesize the apple double files.

The issues that I am having with the AppleDouble files are two-fold

- without going into detail the AppleDouble files causes problems with our file/cacheing file/sharing synchronization logic.
- there are issues for non osx users who will be able to quite eaisly delete/rename one of the two files without the other.


In looking at this issue one of the things I have done is look at other WebDAV clients to see what they do. The fusedav project http://0pointer.de/lennart/projects/fusedav/ takes a diferent approach and supports extended attributes by supporting them as meta data. From my point of view this would seem to have many advantages - there is just a single file to deal with - which clears up a lot of problems.

Does anyone have any opinions as to why they think the fusedav approach to extended attributes is not a good one. I must admit that my concern is that extended attributes can become quite large - in the old days a resource fork was a handy place to store things.

Best regards

Alan
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