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import java.io.IOException;

/*
 * @test
 * @summary Verify Signal mask is cleared by ProcessBuilder start
 * @bug 8234262
 * @requires (os.family == "linux" | os.family == "mac")
 * @comment Don't allow -Xcomp, it disturbs the relative timing of the sleep and kill commands
 * @requires (vm.compMode != "Xcomp")
 * @run main/othervm UnblockSignals
 * @run main/othervm -Xrs UnblockSignals
 */
public class UnblockSignals {
    public static void main(String[] args)  throws IOException, InterruptedException {
        // Check that SIGQUIT is not masked, in previous releases it was masked
        final ProcessBuilder pb = new ProcessBuilder("sleep", "30").inheritIO();
        Process p = pb.start();
        System.out.printf("Child %d, %s%n", p.pid(), pb.command());
        ProcessBuilder killpb = new ProcessBuilder("kill", "-s", "QUIT", Long.toString(p.pid()));
        Process killp = killpb.start();
        System.out.printf("Child %d, %s%n", killp.pid(), killpb.command());
        int killst = killp.waitFor();
        if (killst != 0) {
            throw new RuntimeException("Kill process failed, exit status: " + killst);
        }
        int sleepStatus = p.waitFor();
        if (sleepStatus == 0) {
            throw new RuntimeException("Child not killed");
        }
    }
}