PTYFS_FILENO
ppp = &ptyfs_node_tbl[PTYFS_FILENO(type, pty) & ptyfs_node_mask];
pp->ptyfs_fileno = PTYFS_FILENO(type, pty);
dp->d_fileno = PTYFS_FILENO(PTYFSroot, 0);
dp->d_fileno = PTYFS_FILENO(PTYFSpts, n);