Transfer UST exclusion names from sessiond to client

[lttng-tools.git] / src / lib / lttng-ctl / lttng-ctl.c

diff --git a/src/lib/lttng-ctl/lttng-ctl.c b/src/lib/lttng-ctl/lttng-ctl.c
index 9cb2eb4a695648bfb3f4002248ffdeae3a6d6d64..02b3fed4cd3a76a7ff5d828fbabed8723ca38750 100644 (file)
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -1773,6 +1773,8 @@ int lttng_list_events(struct lttng_handle *handle,
                        (struct lttcomm_event_extended_header *) extended_at;
                extended_at += sizeof(*ext_header);
                extended_at += ext_header->filter_len;
+               extended_at +=
+                       ext_header->nb_exclusions * LTTNG_SYMBOL_NAME_LEN;
        }
 
        return ret;
@@ -1782,6 +1784,38 @@ error:
        return ret;
 }
 
+int lttng_event_get_filter_string(struct lttng_event *event,
+       const char **filter_string)
+{
+       int ret = 0;
+       struct lttcomm_event_extended_header *ext_header;
+
+       if (!event || !filter_string) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       ext_header = event->extended.ptr;
+
+       if (!ext_header) {
+               /*
+                * This can happen since the lttng_event structure is
+                * used for other tasks where this pointer is never set.
+                */
+               *filter_string = NULL;
+               goto end;
+       }
+
+       if (ext_header->filter_len) {
+               *filter_string = ((const char *) (ext_header)) +
+                       sizeof(*ext_header);
+       } else {
+               *filter_string = NULL;
+       }
+
+end:
+       return ret;
+}
 
 /*
  * Sets the tracing_group variable with name.