nc 0.9.8

Access system calls directly
Documentation 
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/// Manage UFS1 extended attributes
pub unsafe fn extattrctl<P: AsRef<Path>>(
    path: P,
    cmd: i32,
    filename: P,
    attr_namespace: i32,
    attr_name: &str,
) -> Result<(), Errno> {
    let path = CString::new(path.as_ref());
    let path_ptr = path.as_ptr() as usize;
    let cmd = cmd as usize;
    let filename = CString::new(filename.as_ref());
    let filename_ptr = filename.as_ptr() as usize;
    let attr_namespace = attr_namespace as usize;
    let attr_name = CString::new(attr_name);
    let attr_name_ptr = attr_name.as_ptr() as usize;
    unsafe {
        syscall5(
            SYS_EXTATTRCTL,
            path_ptr,
            cmd,
            filename_ptr,
            attr_namespace,
            attr_name_ptr,
        )
        .map(drop)
    }
}