Have you filed a bug on this and, if so, what is the bug number? Not yet, but I do have another thread where I describe the same problem in regards to .DS_Store: https://developer.apple.com/forums/thread/819041 I will post the bug number (most likely there) when I carve out a little time for it. Currently if copyfile fails and errno is not set my code falls back to a kind of 'Unknown Error' which I hate but if the user is counting on my app to perform the copy it's kind of a gamble if the operation doesn't succeed to just hope not critical data was lost. A big part of this is that xattrs aren't actually safe“— the system doesn't have a documented system for defining how they should be handled, and app/copy engine/file format support for them is inconsistent, so storing critical data in them can end up being a good way to lose critical data. Importantly, that kind of data loss isn't really a bug in the same way other kinds of data loss would be. The general point of xattrs is to allow the attachment of arbitra
Topic:
App & System Services
SubTopic:
Core OS
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