Merge "Remove the broken LED flashing code from debuggerd."

  int32_t original_si_code;

};

static int write_string(const char* file, const char* string) {

  int len;

  int fd;

  ssize_t amt;

  fd = open(file, O_RDWR);

  len = strlen(string);

  if (fd < 0)

    return -errno;

  amt = write(fd, string, len);

  close(fd);

  return amt >= 0 ? 0 : -errno;

}

static void init_debug_led() {

  // trout leds

  write_string("/sys/class/leds/red/brightness", "0");

  write_string("/sys/class/leds/green/brightness", "0");

  write_string("/sys/class/leds/blue/brightness", "0");

  write_string("/sys/class/leds/red/device/blink", "0");

  // sardine leds

  write_string("/sys/class/leds/left/cadence", "0,0");

}

static void enable_debug_led() {

  // trout leds

  write_string("/sys/class/leds/red/brightness", "255");

  // sardine leds

  write_string("/sys/class/leds/left/cadence", "1,0");

}

static void disable_debug_led() {

  // trout leds

  write_string("/sys/class/leds/red/brightness", "0");

  // sardine leds

  write_string("/sys/class/leds/left/cadence", "0,0");

}

static void wait_for_user_action(pid_t pid) {

  // Find out the name of the process that crashed.

  char path[64];

  // Wait for VOLUME DOWN.

  if (init_getevent() == 0) {

    int ms = 1200 / 10;

    int dit = 1;

    int dah = 3*dit;

    int _       = -dit;

    int ___     = 3*_;

    int _______ = 7*_;

    const int codes[] = {

      dit,_,dit,_,dit,___,dah,_,dah,_,dah,___,dit,_,dit,_,dit,_______

    };

    size_t s = 0;

    input_event e;

    init_debug_led();

    enable_debug_led();

    while (true) {

      int timeout = abs(codes[s]) * ms;

      int res = get_event(&e, timeout);

      if (res == 0) {

      input_event e;

      if (get_event(&e, -1) == 0) {

        if (e.type == EV_KEY && e.code == KEY_VOLUMEDOWN && e.value == 0) {

          break;

        }

      } else if (res == 1) {

        if (++s >= sizeof(codes)/sizeof(*codes))

          s = 0;

        if (codes[s] > 0) {

          enable_debug_led();

        } else {

          disable_debug_led();

        }

      }

    }

    uninit_getevent();

  }

  // don't forget to turn debug led off

  disable_debug_led();

  LOG("debuggerd resuming process %d", pid);

}