Function signalHandler

exec/exec.go:200–218

signalHandler forwards all the signals to the cmd.

(cmd *exec.Cmd, exitCh chan int)

// signalHandler forwards all the signals to the cmd.
func signalHandler(cmd *exec.Cmd, exitCh chan int) {
	// signal.Notify prefers a buffered channel. From documentation: "For a
	// channel used for notification of just one signal value, a buffer of size
	// 1 is sufficient." As we do not know how many signal values the cmd is
	// expecting we select 1 as a sane default. In the future maybe we can make
	// this value configurable.
	signals := make(chan os.Signal, 1)
	signal.Notify(signals)
	defer signal.Stop(signals)
	for {
		select {
		case sig := <-signals:
			cmd.Process.Signal(sig)
		case code := <-exitCh:
			//nolint:gocritic // ignore exitAfterDefer error - defer is required for recovery.
			os.Exit(code)
		}
	}
}