Fix: error when listing sessions with no session

[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 bbff088e098107ebd64b171116f767a1f7126079..20dca8132186e46531589d9294b31a44dc52e9b3 100644 (file)
--- a/src/lib/lttng-ctl/lttng-ctl.c
+++ b/src/lib/lttng-ctl/lttng-ctl.c
@@ -1078,7 +1078,11 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle,
        unsigned int free_filter_expression = 0;
        struct filter_parser_ctx *ctx = NULL;
 
-       memset(&send_buffer, 0, sizeof(send_buffer));
+       /*
+        * We have either a filter or some exclusions, so we need to set up
+        * a variable-length memory block from where to send the data.
+        */
+       lttng_dynamic_buffer_init(&send_buffer);
 
        /*
         * Cast as non-const since we may replace the filter expression
@@ -1128,12 +1132,6 @@ int lttng_enable_event_with_exclusions(struct lttng_handle *handle,
        lsm.u.enable.exclusion_count = exclusion_count;
        lsm.u.enable.bytecode_len = 0;
 
-       /*
-        * We have either a filter or some exclusions, so we need to set up
-        * a variable-length memory block from where to send the data.
-        */
-       lttng_dynamic_buffer_init(&send_buffer);
-
        /* Parse filter expression. */
        if (filter_expression != NULL || handle->domain.type == LTTNG_DOMAIN_JUL
                        || handle->domain.type == LTTNG_DOMAIN_LOG4J
@@ -2079,7 +2077,6 @@ int lttng_list_sessions(struct lttng_session **out_sessions)
        lsm.cmd_type = LTTNG_LIST_SESSIONS;
        ret = lttng_ctl_ask_sessiond(&lsm, (void**) &sessions);
        if (ret <= 0) {
-               ret = ret == 0 ? -LTTNG_ERR_FATAL : ret;
                goto end;
        }
        if (!sessions) {