<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; "><BR><DIV><DIV>On Sep 23, 2005, at 5:19 PM, Gerd Knops wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><DIV><BR></DIV><DIV>On Fri, Sep 23, at 3:28 PM, Kevin Ballard wrote:</DIV><DIV><BR></DIV> <BR><BLOCKQUOTE type="cite"><DIV>On Sep 23, 2005, at 4:11 PM, Gerd Knops wrote:</DIV> <BR><BLOCKQUOTE type="cite"><DIV><BR></DIV><DIV>[5] <A href="http://developer.apple.com/qa/qa2001/qa1242.html">http://developer.apple.com/qa/qa2001/qa1242.html</A></DIV><DIV><BR></DIV> <BR></BLOCKQUOTE><DIV><BR></DIV><DIV>Erm, I'd like to point out that, as [5] mentions, in Tiger VFS's are now fairly well insulated from Kernel changes, and if I remember WWDC correctly, the Kernel changes in 10.4 should make things like VFS's a lot more forward-compatible. So it really isn't so much the moving target anymore.</DIV> <BR></BLOCKQUOTE><DIV><BR></DIV><DIV>True, and a kernel-level interface to something like Fuse would be the more efficient and elegant solution. Though considering their comments about stacking VFS plug-ins in that same document shows that they do tend to change their minds.<BR></DIV></BLOCKQUOTE><DIV><BR class="khtml-block-placeholder"></DIV><DIV>They've been pretty consistent on this, actually. Remember, that was over four years ago. Ever since, they've been warning developers that the VFS interface would change in the future. They inherited the VFS architecture from BSD, remember, they didn't create it. The stacking stuff came "for free". Tiger is the first time they've made a commitment to VFS binary compatibility.</DIV><BR><BLOCKQUOTE type="cite"><DIV>Also binary compatibility for kexts between OS releases is very hard to maintain, and the fact remains that documentation is poor and kernel-level development is quite the black magic. NFS on the other hand is pretty well understood and they will think twice about dropping NFS support. But all this is philosophical until someone actually sits down and does something about this...</DIV></BLOCKQUOTE></DIV><DIV><FONT class="Apple-style-span" color="#0000DD"><BR class="khtml-block-placeholder"></FONT></DIV><DIV><FONT class="Apple-style-span" color="#0000DD">Probably someone with either corporate support or a ton of free time will have to sit down and dive through the WebDAV FS code to figure out how to build a FuseFS equivalent.</FONT></DIV><DIV><FONT class="Apple-style-span" color="#0000DD"><BR class="khtml-block-placeholder"></FONT></DIV><DIV><FONT class="Apple-style-span" color="#0000DD">Chris</FONT></DIV></BODY></HTML>