Function track_background_forward_or_cleanup

crates/openshell-cli/src/ssh.rs:498–512

Track a verified background forward, cleaning it up if PID-file persistence fails.

(
    name: &str,
    port: u16,
    pid: u32,
    sandbox_id: &str,
    bind_addr: &str,
    cleanup: impl FnOnce(),
)

/// Track a verified background forward, cleaning it up if PID-file persistence fails.
fn track_background_forward_or_cleanup(
    name: &str,
    port: u16,
    pid: u32,
    sandbox_id: &str,
    bind_addr: &str,
    cleanup: impl FnOnce(),
) -> Result<()> {
    if let Err(err) = write_forward_pid(name, port, pid, sandbox_id, bind_addr) {
        cleanup();
        return Err(err)
            .wrap_err("local forward listener was reachable but tracking the SSH process failed");
    }
    Ok(())
}

fn foreground_forward_started_message(name: &str, spec: &ForwardSpec) -> String {
    format!(