int qemu_show_nic_models(const char *arg, const char *const *models) { int i; if (!arg || strcmp(arg, "?")) return 0; fprintf(stderr, "qemu: Supported NIC models: "); for (i = 0 ; models[i]; i++) fprintf(stderr, "%s%c", models[i], models[i+1] ? ',' : '\n'); return 1; }