getattrlistbulk lists files with underscore prefix on exFAT

Are these AppleDouble files? You can recognise them two ways:

• If the file is called foo, the corresponding AppleDouble file is ._foo.

• They have a leading magic number of 00 05 16 07.

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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"

Thanks, that seems to be the case. Is there a more efficient way of checking that a file is an AppleDouble file other than testing if a file exists with the same name but without the ._ prefix or check the first bytes against that magic number? During my test I noticed that the dot underscore file seems to be enumerated by getattrlistbulk immediately after the original file: is this always guaranteed and is there a documentation somewhere that explains this in more detail? Any idea how FileManager does it?

is this always guaranteed … ?

Definitely not.

Any idea how FileManager does it?

I don’t think there’s any magic here. FileManager detects AppleDouble files in the obvious way (looks for the ._ prefix and then matches based on name).

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—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@apple.com"

I'm wondering what I have to do in order to make this work on iOS as well. In the bridging header I have #include <sys/vnode.h> which works fine when building for macOS, but for iOS I get the error 'sys/vnode.h' file not found. Do I have to include some framework or library in the iOS target's Build Phases?

Sorry, wrong thread.