On Fri, Oct 10, 2008 at 05:57:22PM -0400, Theodore Tso wrote: > The only ones that would have that concept is vfat (which supports > fat16/fat32), ntfs, nfsv4 and cifs/smbfs. Even a filesystem which > normally has very bad taste, MacOS's HFS, doesn't support the hidden > attribute. Actually, HFS and HFS+ have an "invisible" bit for each entry. This is read by Finder to tell if it should show an icon for that particular file or directory. This is similar to the MSDOS hidden attribtue. I don't think we currently expose that in any way, although it used to be exposed in HFS if you were using one of the optional modes to expose the Mac metadata for sharing over AFP. I will admit that structurally it's very different from the way FAT handles such a thing. The invisible bit is part of the FinderInfo structure that is really just the metadata for Finder to draw the views correctly and just happens to be stored inside the filesystem metadata area (similar to the way a unix filesystem does xattrs). It even includes things like point and rect info for icon placement. >From hfs.h: /* bits hfs_finfo.fdFlags */ #define HFS_FLG_INVISIBLE 0x4000 I'll also be clear that this doesn't get used by ls or other UNIX type utilities on OSX. It's purely metadata for Finder. Brad Boyer flar@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
