tmp = lttng_event_create();
if (!tmp) {
ret_code = LTTNG_ERR_NOMEM;
- goto end;
+ goto error;
}
if (lttng_strncpy(tmp->name, uevent->attr.name,
LTTNG_SYMBOL_NAME_LEN)) {
ret_code = LTTNG_ERR_FATAL;
lttng_event_destroy(tmp);
- goto end;
+ goto error;
}
tmp->name[LTTNG_SYMBOL_NAME_LEN - 1] = '\0';
/*
* Command LTTNG_LIST_TRACEPOINT_FIELDS processed by the client thread.
*/
-ssize_t cmd_list_tracepoint_fields(enum lttng_domain_type domain,
- struct lttng_event_field **fields)
+enum lttng_error_code cmd_list_tracepoint_fields(enum lttng_domain_type domain,
+ struct lttng_dynamic_buffer *buffer, unsigned int *nb_fields)
{
+ enum lttng_error_code ret_code;
int ret;
- ssize_t nb_fields = 0;
+ unsigned int i;
+ struct lttng_event_field *fields = NULL;
switch (domain) {
case LTTNG_DOMAIN_UST:
- nb_fields = ust_app_list_event_fields(fields);
- if (nb_fields < 0) {
- ret = LTTNG_ERR_UST_LIST_FAIL;
+ ret = ust_app_list_event_fields(&fields);
+ if (ret < 0) {
+ ret_code = LTTNG_ERR_UST_LIST_FAIL;
goto error;
}
break;
case LTTNG_DOMAIN_KERNEL:
default: /* fall-through */
- ret = LTTNG_ERR_UND;
+ ret_code = LTTNG_ERR_UND;
goto error;
}
- return nb_fields;
+ *nb_fields = ret;
+
+ for (i = 0; i < *nb_fields; i++) {
+ ret = lttng_event_field_serialize(&fields[i], buffer);
+ if (ret) {
+ ret_code = -LTTNG_ERR_NOMEM;
+ goto error;
+ }
+ }
+
+ ret_code = LTTNG_OK;
error:
- /* Return negative value to differentiate return code */
- return -ret;
+ free(fields);
+ return ret_code;
}
enum lttng_error_code cmd_list_syscalls(