Получение имени съемного накопителя

    fd_set fds;
        struct timeval tv;
        int ret;
        
        FD_ZERO(&fds);
        FD_SET(fd, &fds);
        tv.tv_sec = 0;
        tv.tv_usec = 0;
        
        ret = select(fd+1, &fds, NULL, NULL, &tv);
        
        /* Check if our file descriptor has received data. */
        if (ret > 0 && FD_ISSET(fd, &fds)) {
            printf("\nselect() says there should be data\n");
            
            /* Make the call to receive the device.
               select() ensured that this will not block. */
            dev = udev_monitor_receive_device(mon);
            if (dev) {
                printf("Got Device\n");
                printf("   Node: %s\n", udev_device_get_devnode(dev));
                printf("   Subsystem: %s\n", udev_device_get_subsystem(dev));
                printf("   Devtype: %s\n", udev_device_get_devtype(dev));
 
                printf("   Action: %s\n", udev_device_get_action(dev));
                udev_device_unref(dev);
            }
            else {
                printf("No Device from receive_device(). An error occured.\n");
            }

struct udev_monitor *mon;
mon = udev_monitor_new_from_netlink(udev, "udev");
udev_monitor_filter_add_match_subsystem_devtype(mon, "block", NULL); 
udev_monitor_filter_add_match_subsystem_devtype(mon, "usb","usb-device");