Function openat::hardlink

pub fn hardlink<P, R>(
    old_dir: &Dir, 
    old: P, 
    new_dir: &Dir, 
    new: R
) -> Result<()> where
    P: AsPath,
    R: AsPath, 

Create a hardlink to a file

Files must be on a single filesystem even if they are in different directories.

Note: by default linkat syscall doesn’t resolve symbolic links, and it’s also behavior of this function. It’s recommended to resolve symlinks manually if needed.