You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: inode.rs
    path of file: ./repos/catfs/src/catfs
    
    the code of the file until where you have to start completion: extern crate fuse;
extern crate libc;
extern crate threadpool;
extern crate time;

use self::threadpool::ThreadPool;
use self::time::{Duration, Timespec};

use std::ffi::OsStr;
use std::ffi::OsString;
use std::io;
use std::os::unix::io::RawFd;
use std::path::{Path, PathBuf};
use std::sync::Mutex;

use catfs::dir;
use catfs::error;
use catfs::file;
use catfs::rlibc;
use catfs::rlibc::File;

#[derive(Clone)]
pub struct Inode {
    src_dir: RawFd,
    cache_dir: RawFd,

    name: OsString,
    path: PathBuf,

    attr: fuse::FileAttr,
    time: Timespec,
    cache_valid_if_present: bool,
    flush_failed: bool,

    refcnt: u64,
}

fn to_filetype(t: libc::mode_t) -> fuse::FileType {
    match t & libc::S_IFMT {
        libc::S_IFLNK => fuse::FileType::Symlink,
        libc::S_IFREG => fuse::FileType::RegularFile,
        libc::S_IFBLK => fuse::FileType::BlockDevice,
        libc::S_IFDIR => fuse::FileType::Directory,
        libc::S_IFCHR => fuse::FileType::CharDevice,
        libc::S_IFIFO => fuse::FileType::NamedPipe,
        
    
    pub fn lookup_path(dir: RawFd, path: &dyn AsRef<Path>) -> io::Result<fuse::FileAttr> {
        let st = rlibc::fstatat(dir, path)?;
        let attr = fuse::FileAttr {
            ino: st.st_ino,
            size: st.st_size as u64,
            blocks: st.st_blocks as u64,
            atime: Timespec {
                sec: st.st_atime as i64,
                nsec: st.st_atime_nsec as i32,
            },
            mtime: Timespec {
                sec: st.st_mtime as i64,
                nsec: st.st_mtime_nsec as i32,
            },
            ctime: Timespec {
                sec: st.st_ctime as i64,
                nsec: st.st_ctime_nsec as i32,
            },
            crtime: Timespec {
                sec: st.st_ctime as i64,
                nsec: st.st_ctime_nsec as i32,
            },
            kind: to_filetype(st.st_mode),
            perm: (st.st_mode & !libc::S_IFMT) as u16,
            nlink: st.st_nlink as u32,
            uid: st.st_uid,
            gid: st.st_gid,
            rdev: st.st_rdev as u32,
            flags: 0,
        };
        return Ok(attr);
    }