+/*
+ * create_version
+ */
+static void create_version(struct mi_lttng_version *version)
+{
+ strncpy(version->version, VERSION, NAME_MAX);
+ version->version_major = VERSION_MAJOR;
+ version->version_minor = VERSION_MINOR;
+ version->version_patchlevel = VERSION_PATCHLEVEL;
+ strncpy(version->version_commit, FULL_VERSION, NAME_MAX);
+ strncpy(version->version_name, VERSION_NAME, NAME_MAX);
+ strncpy(version->package_url, PACKAGE_URL, NAME_MAX);
+}
+
+/*
+ * Print the machine interface output of this command.
+ */
+static int print_mi()
+{
+ int ret = CMD_SUCCESS;
+ struct mi_writer *writer = NULL;
+ struct mi_lttng_version version;
+
+ create_version(&version);
+
+ writer = mi_lttng_writer_create(fileno(stdout), lttng_opt_mi);
+ if (!writer) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
+
+ /* Open the command element */
+ ret = mi_lttng_writer_command_open(writer,
+ mi_lttng_element_command_version);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ /* Beginning of output */
+ ret = mi_lttng_writer_open_element(writer,
+ mi_lttng_element_command_output);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ /* Print the machine interface of version */
+ ret = mi_lttng_version(writer, &version,
+ VERSION_DESCRIPTION, lttng_license);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ /* Close the output element */
+ ret = mi_lttng_writer_close_element(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ goto error;
+ }
+
+ /* Close the command */
+ ret = mi_lttng_writer_command_close(writer);
+ if (ret) {
+ ret = CMD_ERROR;
+ }
+
+error:
+ /* Cleanup */
+ if (writer && mi_lttng_writer_destroy(writer)) {
+ /* Preserve original error code */
+ ret = ret ? ret : -LTTNG_ERR_MI_IO_FAIL;
+ }
+
+end:
+ return ret;
+}
+