Jeremy Soller
48 lines
1.5 KiB
Rust
48 lines
1.5 KiB
Rust
extern crate syscall;
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use std::io::Write;
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use std::process::Command;
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use std::{env, io, str, thread};
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pub fn main() {
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let mut args = env::args().skip(1);
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let tty = args.next().expect("getty: no tty provided");
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let _ = syscall::close(2);
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let _ = syscall::close(1);
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let _ = syscall::close(0);
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let _ = syscall::open(&tty, syscall::flag::O_RDWR);
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let _ = syscall::open(&tty, syscall::flag::O_RDWR);
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let _ = syscall::open(&tty, syscall::flag::O_RDWR);
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env::set_var("TTY", &tty);
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{
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let mut path = [0; 4096];
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if let Ok(count) = syscall::fpath(0, &mut path) {
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let path_str = str::from_utf8(&path[..count]).unwrap_or("");
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let reference = path_str.split(':').nth(1).unwrap_or("");
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let mut parts = reference.split('/').skip(1);
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env::set_var("COLUMNS", parts.next().unwrap_or("80"));
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env::set_var("LINES", parts.next().unwrap_or("30"));
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}
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}
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thread::spawn(move || {
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let stdout = io::stdout();
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let mut stdout = stdout.lock();
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loop {
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stdout.write(b"\x1Bc").unwrap();
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let _ = stdout.flush();
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match Command::new("login").spawn() {
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Ok(mut child) => match child.wait() {
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Ok(_status) => (), //println!("getty: waited for login: {:?}", status.code()),
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Err(err) => panic!("getty: failed to wait for login: {}", err)
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},
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Err(err) => panic!("getty: failed to execute login: {}", err)
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}
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}
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});
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}
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