Function write_forward_pid

crates/openshell-core/src/forward.rs:32–46

Write a PID file for a background forward. File format: ` \t \t `

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

///
/// File format: `<pid>\t<sandbox_id>\t<bind_addr>`
pub fn write_forward_pid(
    name: &str,
    port: u16,
    pid: u32,
    sandbox_id: &str,
    bind_addr: &str,
) -> Result<()> {
    let dir = forward_pid_dir()?;
    create_dir_restricted(&dir)?;
    let path = forward_pid_path(name, port)?;
    std::fs::write(&path, format!("{pid}\t{sandbox_id}\t{bind_addr}"))
        .into_diagnostic()
        .wrap_err("failed to write forward PID file")?;
    Ok(())
}

/// Find the PID of a backgrounded SSH forward by searching for the matching
/// SSH process.  Falls back to `pgrep` since SSH `-f` forks a new process