Function read_forward_pid

crates/openshell-core/src/forward.rs:77–89

Read the PID from a forward PID file. Returns `None` if the file does not exist or cannot be parsed.

(name: &str, port: u16)

/// Read the PID from a forward PID file.  Returns `None` if the file does not
/// exist or cannot be parsed.
pub fn read_forward_pid(name: &str, port: u16) -> Option<ForwardPidRecord> {
    let path = forward_pid_path(name, port).ok()?;
    let contents = std::fs::read_to_string(path).ok()?;
    let mut parts = contents.split('\t');
    let pid = parts.next()?.trim().parse().ok()?;
    let sandbox_id = parts.next().map(str::to_string);
    let bind_addr = parts.next().map(|s| s.trim().to_string());
    Some(ForwardPidRecord {
        pid,
        sandbox_id,
        bind_addr,
    })
}

/// Check whether a process is alive.
pub fn pid_is_alive(pid: u32) -> bool {