Save filter expressions as part of agent events

[lttng-tools.git] / src / bin / lttng-sessiond / cmd.c

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index ffff05809d2f072cd6c40ea00f83dec07fad5f56..ac489fa2fa7f946a7c65a8b81d8f4572323ea16d 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -1769,6 +1769,7 @@ static int _cmd_enable_event(struct ltt_session *session,
 
                {
                        struct lttng_filter_bytecode *filter_copy = NULL;
+                       char *filter_expression_copy = NULL;
 
                        if (filter) {
                                filter_copy = zmalloc(
@@ -1779,16 +1780,28 @@ static int _cmd_enable_event(struct ltt_session *session,
                                }
 
                                memcpy(filter_copy, filter,
-                                       sizeof(struct lttng_filter_bytecode)
-                                       + filter->len);
+                                      sizeof(struct lttng_filter_bytecode)
+                                      + filter->len);
+                       }
+
+                       if (filter_expression) {
+                               filter_expression_copy =
+                                               strdup(filter_expression);
+                               if (!filter_expression) {
+                                       ret = LTTNG_ERR_NOMEM;
+                                       goto error_free_copy;
+                               }
                        }
 
                        ret = cmd_enable_event_internal(session, &tmp_dom,
                                        (char *) default_chan_name,
-                                       &uevent, filter_expression, filter_copy,
-                                       NULL, wpipe);
-                       /* We have passed ownership */
-                       filter_expression = NULL;
+                                       &uevent, filter_expression_copy,
+                                       filter_copy, NULL, wpipe);
+                       filter_copy = NULL;
+                       filter_expression_copy = NULL;
+error_free_copy:
+                       free(filter_copy);
+                       free(filter_expression_copy);
                }
 
                if (ret != LTTNG_OK && ret != LTTNG_ERR_UST_EVENT_ENABLED) {
@@ -1797,10 +1810,12 @@ static int _cmd_enable_event(struct ltt_session *session,
 
                /* The wild card * means that everything should be enabled. */
                if (strncmp(event->name, "*", 1) == 0 && strlen(event->name) == 1) {
-                       ret = event_agent_enable_all(usess, agt, event, filter);
+                       ret = event_agent_enable_all(usess, agt, event, filter,
+                                       filter_expression);
                        filter = NULL;
                } else {
-                       ret = event_agent_enable(usess, agt, event, filter);
+                       ret = event_agent_enable(usess, agt, event, filter,
+                                       filter_expression);
                        filter = NULL;
                }
                if (ret != LTTNG_OK) {