AUX_DEV_PATH
aux_dir = opendir(AUX_DEV_PATH);
fprintf(stderr, "Cannot open directory %s\n", AUX_DEV_PATH);
s->dev_path = (char *)malloc(sizeof(AUX_DEV_PATH) + dev_name_len);
snprintf(s->dev_path, sizeof(AUX_DEV_PATH) + dev_name_len, "%s%s", AUX_DEV_PATH,