Function pidpath 

pub fn pidpath(pid: i32) -> Result<String, String>

Get the path of the executable file being run for a process

Errors

Will return Err if not run as root or the underlying linux readlink method returns a non-zero value and sets errno

Examples

use libproc::libproc::proc_pid::{pidpath, am_root};

match pidpath(1) {
    Ok(path) => println!("Path of init process with PID = 1 is '{}'", path),
    Err(_) if !am_root() => println!("pidpath() needs to be run as root"),
    Err(err) if am_root() => eprintln!("Error: {}", err),
    _ => panic!("Unknown error")
}