+int maybe_config_get(struct sr_dev_driver *driver,
+ const struct sr_dev_inst *sdi, struct sr_channel_group *cg,
+ uint32_t key, GVariant **gvar)
+{
+ if (sr_dev_config_capabilities_list(sdi, cg, key) & SR_CONF_GET)
+ return sr_config_get(driver, sdi, cg, key, gvar);
+
+ return SR_ERR_NA;
+}
+
+int maybe_config_set(struct sr_dev_driver *driver,
+ const struct sr_dev_inst *sdi, struct sr_channel_group *cg,
+ uint32_t key, GVariant *gvar)
+{
+ (void)driver;
+
+ if (sr_dev_config_capabilities_list(sdi, cg, key) & SR_CONF_SET)
+ return sr_config_set(sdi, cg, key, gvar);
+
+ return SR_ERR_NA;
+}
+
+int maybe_config_list(struct sr_dev_driver *driver,
+ const struct sr_dev_inst *sdi, struct sr_channel_group *cg,
+ uint32_t key, GVariant **gvar)
+{
+ if (sr_dev_config_capabilities_list(sdi, cg, key) & SR_CONF_LIST)
+ return sr_config_list(driver, sdi, cg, key, gvar);
+
+ return SR_ERR_NA;
+}
+
+static void get_option(void)
+{
+ struct sr_dev_inst *sdi;
+ struct sr_channel_group *cg;
+ const struct sr_key_info *ci;
+ GSList *devices;
+ GVariant *gvar;
+ GHashTable *devargs;
+ int ret;
+ char *s;
+ struct sr_dev_driver *driver;
+
+ if (!(devices = device_scan())) {
+ g_critical("No devices found.");
+ return;
+ }
+ sdi = devices->data;
+ g_slist_free(devices);
+
+ driver = sr_dev_inst_driver_get(sdi);
+
+ if (sr_dev_open(sdi) != SR_OK) {
+ g_critical("Failed to open device.");
+ return;
+ }
+
+ cg = select_channel_group(sdi);
+ if (!(ci = sr_key_info_name_get(SR_KEY_CONFIG, opt_get)))
+ g_critical("Unknown option '%s'", opt_get);
+
+ if ((devargs = parse_generic_arg(opt_config, FALSE)))
+ set_dev_options(sdi, devargs);
+ else devargs = NULL;
+
+ if ((ret = maybe_config_get(driver, sdi, cg, ci->key, &gvar)) != SR_OK)
+ g_critical("Failed to get '%s': %s", opt_get, sr_strerror(ret));
+ s = g_variant_print(gvar, FALSE);
+ printf("%s\n", s);
+ g_free(s);
+
+ g_variant_unref(gvar);
+ sr_dev_close(sdi);
+ if (devargs)
+ g_hash_table_destroy(devargs);
+}
+