On Fri, May 06, 2005 at 02:01:35PM -0600, Warner Losh wrote: > > I have been trying to write my own UFS-like filesystem > > implementation for fun. I had read somewhere that UFS was developed in > > user space (correct me if I'm wrong on that one) and then moved over > > to kernel-space. I was wondering if there are any existing facilities > > in the kernel source tree that would allow me to develop an fs in user > > space easily or with a little tweaking? As of right now, I have to > > develop, compile, panic, reboot, debug etc. which is frustrating and > > time consuming. > > Maybe you are thinking of NFS :-). You can use the same hooks that > amd and similar programs to implement your code in userland.
It's pretty well known that Kirk did the 4.2 FFS implementation as a user-mode process. This statement is made directly in Luke Mewburn's paper on cross-building NetBSD: http://www.usenix.org/events/bsdcon03/tech/full_papers/mewburn/mewburn.pdf (page 9). It doesn't say in the original 4.2 FFS paper. -Kurt _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"