shpool_pty

A fork of the pty crate with some extra features added to help implement shpool. See the main pty crate for more info.

lib.rs:

PTY

The pty crate provides pty::fork(). That makes a parent process fork with new pseudo-terminal (PTY).

This crate depends on followings:

• libc library
• POSIX environment

Usage

Add this to your Cargo.toml:

[dependencies]
pty = "0.2"

and this to your crate root:

extern crate shpool_pty;

pty::fork()

This function returns pty::Child. It represents the child process and its PTY.

For example, the following code spawns tty(1) command by pty::fork() and outputs the result of the command.

extern crate shpool_pty;
extern crate libc;

use std::ffi::CString;
use std::io::Read;
use std::process::{Command};

use shpool_pty::fork::*;

fn main() {
  let fork = Fork::from_ptmx().unwrap();

  if let Some(mut master) = fork.is_parent().ok() {
    // Read output via PTY master
    let mut output = String::new();

    match master.read_to_string(&mut output) {
      Ok(_nread) => println!("child tty is: {}", output.trim()),
      Err(e)     => panic!("read error: {}", e),
    }
  }
  else {
    // Child process just exec `tty`
    Command::new("tty").status().expect("could not execute tty");
  }
}