There are UNIX filesystem for RTEMS?

[Alexander I. Shaykhrazeev]

Greetings,
Current time I'm solving the problem with filesystem for RTEMS.
I,m trying to port some of UNIX (Linux) filesystems to RTEMS as 
additional package. May be someone already solved that problem, if there 
please contact me.
If RTEMS already have UNIX-like disk filesystem, give me a link please.

-- 
Alexander I. Shaykhrazeev
Morion Inc.