nvme: output NS management command result by json

This is to use the command result NSID created by TP.

Signed-off-by: Tokunori Ikegami <[email protected]>

nvme.c

@@ -2827,26 +2827,42 @@ static int id_endurance_grp_list(int argc, char **argv, struct command *cmd,
 	return err;
 }
 
-static void ns_mgmt_show_error(struct nvme_dev *dev, int err, const char *cmd)
+static bool is_ns_mgmt_support(struct nvme_dev *dev)
 {
-	_cleanup_free_ struct nvme_id_ctrl *ctrl = NULL;
+	int err;
 
+	_cleanup_free_ struct nvme_id_ctrl *ctrl = nvme_alloc(sizeof(*ctrl));
+
+	if (ctrl) {
+		err = nvme_cli_identify_ctrl(dev, ctrl);
+		if (err)
+			goto out;
+		if (le16_to_cpu(ctrl->oacs) & NVME_CTRL_OACS_NS_MGMT)
+			return true;
+		return false;
+	}
+out:
+	return true;
+}
+
+static void ns_mgmt_show_status(struct nvme_dev *dev, int err, const char *cmd, char *name,
+				__u32 nsid)
+{
 	if (err < 0) {
 		nvme_show_error("%s namespace: %s", cmd, nvme_strerror(errno));
 		return;
 	}
 
 	nvme_show_init();
 
-	nvme_show_status(err);
-
-	ctrl = nvme_alloc(sizeof(*ctrl));
-	if (!ctrl)
-		return;
-
-	err = nvme_cli_identify_ctrl(dev, ctrl);
 	if (!err) {
-		if (!(le16_to_cpu(ctrl->oacs) & NVME_CTRL_OACS_NS_MGMT))
+		nvme_show_key_value(true, false, name, "Success, %s",
+				    !strcmp(cmd, "create") ? "created" :
+				    !strcmp(cmd, "delete") ? "deleted" : "");
+		nvme_show_key_value(false, true, "nsid", "%d", nsid);
+	} else {
+		nvme_show_status(err);
+		if (!is_ns_mgmt_support(dev))
 			nvme_show_result("NS management and attachment not supported");
 	}
 
@@ -2892,10 +2908,7 @@ static int delete_ns(int argc, char **argv, struct command *cmd, struct plugin *
 	}
 
 	err = nvme_cli_ns_mgmt_delete(dev, cfg.namespace_id, nvme_cfg.timeout);
-	if (!err)
-		printf("%s: Success, deleted nsid:%d\n", cmd->name, cfg.namespace_id);
-	else
-		ns_mgmt_show_error(dev, err, "delete");
+	ns_mgmt_show_status(dev, err, "delete", cmd->name, cfg.namespace_id);
 
 	return err;
 }
@@ -2956,10 +2969,7 @@ static int nvme_attach_ns(int argc, char **argv, int attach, const char *desc, s
 		err = nvme_cli_ns_detach_ctrls(dev, cfg.namespace_id,
 					       cntlist);
 
-	if (!err)
-		printf("%s: Success, nsid:%d\n", cmd->name, cfg.namespace_id);
-	else
-		ns_mgmt_show_error(dev, err, attach ? "attach" : "detach");
+	ns_mgmt_show_status(dev, err, attach ? "attach" : "detach", cmd->name, cfg.namespace_id);
 
 	return err;
 }
@@ -3324,10 +3334,7 @@ static int create_ns(int argc, char **argv, struct command *cmd, struct plugin *
 		data->phndl[i] = cpu_to_le16(phndl[i]);
 
 	err = nvme_cli_ns_mgmt_create(dev, data, &nsid, nvme_cfg.timeout, cfg.csi);
-	if (!err)
-		printf("%s: Success, created nsid:%d\n", cmd->name, nsid);
-	else
-		ns_mgmt_show_error(dev, err, "create");
+	ns_mgmt_show_status(dev, err, "create", cmd->name, nsid);
 
 	return err;
 }