Below is the file 'modules/fd_unix/modinfo.txt' from this revision. You can also download the file.
realname "Unix I/O support for Pipe" define PIPE_UNIXFD_IO modset unix,beos load_on auto <add> fd_unix.h fd_unix.cpp </add> <os> aix beos cygwin darwin freebsd hpux irix linux netbsd openbsd qnx solaris tru64 </os>