Command metadata regenerate

[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 157d9a4335af5b5d52b3fcc7be942b4f2d77719a..61396eb461958b179f5975f1e19f3739da13bac9 100644 (file)
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -1809,13 +1809,13 @@ error:
        return ret;
 }
 
-int lttng_event_get_filter_string(struct lttng_event *event,
-       const char **filter_string)
+int lttng_event_get_filter_expression(struct lttng_event *event,
+       const char **filter_expression)
 {
        int ret = 0;
        struct lttcomm_event_extended_header *ext_header;
 
-       if (!event || !filter_string) {
+       if (!event || !filter_expression) {
                ret = -LTTNG_ERR_INVALID;
                goto end;
        }
@@ -1827,15 +1827,15 @@ int lttng_event_get_filter_string(struct lttng_event *event,
                 * This can happen since the lttng_event structure is
                 * used for other tasks where this pointer is never set.
                 */
-               *filter_string = NULL;
+               *filter_expression = NULL;
                goto end;
        }
 
        if (ext_header->filter_len) {
-               *filter_string = ((const char *) (ext_header)) +
-                       sizeof(*ext_header);
+               *filter_expression = ((const char *) (ext_header)) +
+                               sizeof(*ext_header);
        } else {
-               *filter_string = NULL;
+               *filter_expression = NULL;
        }
 
 end:
@@ -2374,6 +2374,36 @@ int lttng_list_tracker_pids(struct lttng_handle *handle,
        return 0;
 }
 
+/*
+ * Regenerate the metadata for a session.
+ * Return 0 on success, a negative error code on error.
+ */
+int lttng_metadata_regenerate(const char *session_name)
+{
+       int ret;
+       struct lttcomm_session_msg lsm;
+
+       if (!session_name) {
+               ret = -LTTNG_ERR_INVALID;
+               goto end;
+       }
+
+       memset(&lsm, 0, sizeof(lsm));
+       lsm.cmd_type = LTTNG_METADATA_REGENERATE;
+
+       lttng_ctl_copy_string(lsm.session.name, session_name,
+                       sizeof(lsm.session.name));
+
+       ret = lttng_ctl_ask_sessiond(&lsm, NULL);
+       if (ret < 0) {
+               goto end;
+       }
+
+       ret = 0;
+end:
+       return ret;
+}
+
 /*
  * lib constructor.
  */