site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com Am 05.03.2006 um 00:13 schrieb Jordan K. Hubbard: To take an example on UFS: Disadvantages: Advantages: Markus - - - - - - - - - - - - - - - - - - - Dipl. Ing. Markus Hitter http://www.jump-ing.de/ _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... 1. That the source and the target for any operation may or may not support EAs, yet heterogeneous operations can't lose data. 2. That creating, editing, renaming, copying and deleting files all need to be able to keep data and metadata together, fully cognizant of the limitations posed by item #1. Maybe there's a way to handle this at the file system level, even for file systems not traditionally supporting EAs. EAs are/can be a thing of the file system driver, even if you store files/metadata in a way readable by a driver not supporting metadata. Creating a file on a Macintosh would create a "file" entry and a "._file" entry as necessary. Not at the system API level, but at the file system level. The file system would hide "._file" on the Mac, making UFS appearing as EA supporting file system. No tool would ever get the idea to do something nasty with this "._file" pseudo-file as it's transparent to the API level. Mounting the same file system on a Linux/BSD/whatever OS would make "._file" appear as a completely separate file from "file", fully native to that other OS. - File listings of the same volume on different OSs show a different number of files. - File archiving (tar etc.) and custom copy protocols (rsync etc.) would still have to handle EAs themselves when copying to/from non- Mac OSs. - There's no need to tweak the basic CLI tools as all file systems appear as supporting EAs on the Mac. - Mapping for network file systems can be done at the network file system driver level, so NFS etc. would still appear as supporting EAs on the Mac, not supporting EAs on other OSs. This email sent to site_archiver@lists.apple.com