Go で syscall.Exec で起動されたサブプロセスに送信されたシグナルをインターセプトして処理するにはどうすればよいですか?

import (
    "os"
    "os/signal"
    "syscall"
)

func main() {
    // Create a channel to receive signal notifications
    sigc := make(chan os.Signal, 1)
    signal.Notify(sigc,
        syscall.SIGHUP,
        syscall.SIGINT,
        syscall.SIGTERM,
        syscall.SIGQUIT)

    go func() {
        s := <-sigc
        // Perform desired actions based on the received signal
        switch s {
        case syscall.SIGHUP:
            // Perform necessary cleanup...
        case syscall.SIGINT:
            // Gracefully terminate...
        default:
            // Handle other supported signals...
        }
    }()

    // Launch subprocess using syscall.Exec
    cmdPath := "<node_server_path>"
    cmdArgs := []string{}
    if err := syscall.Exec(cmdPath, cmdArgs, os.Environ()); err != nil {
        panic(err)
    }
}