sessiond: add support for anonymous triggers

[lttng-tools.git] / src / bin / lttng / commands / list_triggers.c

diff --git a/src/bin/lttng/commands/list_triggers.c b/src/bin/lttng/commands/list_triggers.c
index b497d4f4d82bcafeeb25d68395ecbb5b8778fc82..bb90e7b6e196f44d822b52d808b792d64c2b9006 100644 (file)
--- a/src/bin/lttng/commands/list_triggers.c
+++ b/src/bin/lttng/commands/list_triggers.c
@@ -556,6 +556,9 @@ void print_action_errors(const struct lttng_trigger *trigger,
        assert(query);
 
        trigger_status = lttng_trigger_get_name(trigger, &trigger_name);
+       /*
+        * Anonymous triggers are not listed; this would be an internal error.
+        */
        assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
 
        trigger_status = lttng_trigger_get_owner_uid(trigger, &trigger_uid);
@@ -812,7 +815,9 @@ void print_trigger_errors(const struct lttng_trigger *trigger)
                        lttng_error_query_trigger_create(trigger);
 
        assert(query);
-
+       /*
+        * Anonymous triggers are not listed; this would be an internal error.
+        */
        trigger_status = lttng_trigger_get_name(trigger, &trigger_name);
        assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
 
@@ -893,7 +898,15 @@ void print_one_trigger(const struct lttng_trigger *trigger)
        const char *name;
        uid_t trigger_uid;
 
+       /*
+        * Anonymous triggers are not listed since they can't be specified nor
+        * referenced through the CLI.
+        */
        trigger_status = lttng_trigger_get_name(trigger, &name);
+       if (trigger_status == LTTNG_TRIGGER_STATUS_UNSET) {
+               goto end;
+       }
+
        assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
 
        trigger_status = lttng_trigger_get_owner_uid(trigger, &trigger_uid);
@@ -949,6 +962,8 @@ void print_one_trigger(const struct lttng_trigger *trigger)
        }
 
        print_trigger_errors(trigger);
+end:
+       return;
 }
 
 static
@@ -959,6 +974,7 @@ int compare_triggers_by_name(const void *a, const void *b)
        const char *name_a, *name_b;
        enum lttng_trigger_status trigger_status;
 
+       /* Anonymous triggers are not reachable here. */
        trigger_status = lttng_trigger_get_name(trigger_a, &name_a);
        assert(trigger_status == LTTNG_TRIGGER_STATUS_OK);
 
@@ -1032,9 +1048,24 @@ int cmd_list_triggers(int argc, const char **argv)
        }
 
        for (i = 0; i < num_triggers; i++) {
-               const int add_ret = lttng_dynamic_pointer_array_add_pointer(
-                               &sorted_triggers,
-                               (void *) lttng_triggers_get_at_index(triggers, i));
+               int add_ret;
+               const char *unused_name;
+               const struct lttng_trigger *trigger =
+                               lttng_triggers_get_at_index(triggers, i);
+
+               trigger_status = lttng_trigger_get_name(trigger, &unused_name);
+               switch (trigger_status) {
+               case LTTNG_TRIGGER_STATUS_OK:
+                       break;
+               case LTTNG_TRIGGER_STATUS_UNSET:
+                       /* Don't list anonymous triggers. */
+                       continue;
+               default:
+                       abort();
+               }
+
+               add_ret = lttng_dynamic_pointer_array_add_pointer(
+                               &sorted_triggers, (void *) trigger);
 
                if (add_ret) {
                        ERR("Failed to allocate array of struct lttng_trigger *.");