puffs (pass-to-userspace framework file system) port for FreeBSD

by Tatsiana Severyna for The FreeBSD Project

Currently FreeBSD has limited support for userlevel file systems with GPL licensed fuse port (fusefs-libs) and kernel module (fusefs-kmod). There are some known design drawbacks in this implementation which can't be easily fixed. I'd like to port puffs (Pass-to-Userspace Framework File system) from NetBSD. I'd suggest not to preserve compatibility with NetBSD, but to develop a port preserving FreeBSD native VFS interface and fix librefuse and ported userlevel file systems (psshfs).