A month or so ago I was almost buried in an attempt to "fix" the interface between MAC OS 10.5 and a generic Linux/Samba file server we were using to store files for Journalism and Graphics Arts classes in the high schools. The network guy, who doesn't really want to learn much about MAC's, moved the server from one Linux system to a different one and suddenly nobody could access things anymore. There were good reasons to move it to the newer version of SUSE Linux so I jumped in and tried to see what headway I could make from the MAC User side of things. It finally amounted to what versions of libraries he was using so the things I thought to try didn't help (or not very much). Along the way I came across MACFuse:
MacFUSE allows you to extend Mac OS X's native file handling capabilities via 3rd-party file systems. It is used as a software building block by dozens of products.
As a user, installing the MacFUSE software package will let you use any 3rd-party file system written atop MacFUSE.
As a developer, you can use the MacFUSE SDK to write numerous types of new file systems as regular user-mode programs. The content of these file systems can come from anywhere: from the local disk, from across the network, from memory, or any other combination of sources. Writing a file system using MacFUSE is orders of magnitude easier and quicker than the traditional approach of writing in-kernel file systems. Since MacFUSE file systems are regular applications (as opposed to kernel extensions), you have just as much flexibility and choice in programming tools, debuggers, and libraries as you have if you were developing standard Mac OS X applications.
In more technical terms, MacFUSE implements a mechanism that makes it possible to implement a fully functional file system in a user-space program on Mac OS X (10.4 and above). It provides multiple APIs, one of which is a superset of the FUSE (File-system in USEr space) API that originated on Linux. Therefore, many existing FUSE file systems become readily usable on Mac OS X.
http://code.google.com/p/macfuse/I'm kind of seeing this as a concept only until this morning when I saw the iTunesFS on Versiontracker which allows you to mount the "iTunes Music Library.xml as a file system." Not sure how this would help except as a mechanism to move or back up your library. Anyone else have any thoughts about the utility of something like this?