They are, although nothing modern uses them and they're mostly just sugar for an extended attribute (the resource fork contents are stored as the value of the a

They are, although nothing modern uses them and they're mostly just sugar for an extended attribute (the resource fork contents are stored as the value of the attribute "com.apple.ResourceFork"). Mostly, but not entirely: search the APFS documentation[1] for "resource fork" and you'll find inode flags specific to them. [1] https://developer.apple.com/support/downloads/Apple-File-System-Reference.pdf https://developer.apple.com/support/downloads/Apple-File-Sys...