>From http://plan9.bell-labs.com/magic/man2html/4/u9fs:
U9fs is not a Plan 9 program. Instead it is a program that serves Unix files to Plan 9 machines using the 9P protocol (see intro(5)). It is typically invoked on a Unix machine by inetd with its standard input and output connected to a network connection, typically TCP on an Ethernet. It typically runs as user root and multiplexes access to multiple Plan 9 clients over the single wire. It assumes Plan 9 uids match Unix login names, and changes to the corresponding Unix effective uid when processing requests. Characters in file and directory names unacceptable to Plan 9 are translated into a three-character sequence: \ followed by two hexadecimal digits. U9fs serves both 9P1 (the 9P protocol as used by the second and third editions of Plan 9) and 9P2000. Built and tested on i386, amd64 and sparc64. Should also work on other platforms. Please test and commit. Download: http://openbsd.stanleylieber.com/u9fs/u9fs.tgz -sl
