Implement event notifier

[deliverable/lttng-ust.git] / liblttng-ust-ctl / ustctl.c

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 01214eca60129650c12136205b294b9e1e1993c6..744f66ba6dc9824c00329540d41c88294644bb2c 100644 (file)
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -135,6 +135,8 @@ int ustctl_release_object(int sock, struct lttng_ust_object_data *data)
                break;
        case LTTNG_UST_OBJECT_TYPE_EVENT:
        case LTTNG_UST_OBJECT_TYPE_CONTEXT:
+       case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP:
+       case LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER:
                break;
        default:
                assert(0);
@@ -421,6 +423,97 @@ int ustctl_stop_session(int sock, int handle)
        return ustctl_disable(sock, &obj);
 }
 
+int ustctl_create_event_notifier_group(int sock, int pipe_fd,
+               struct lttng_ust_object_data **_event_notifier_group_data)
+{
+       struct lttng_ust_object_data *event_notifier_group_data;
+       struct ustcomm_ust_msg lum;
+       struct ustcomm_ust_reply lur;
+       ssize_t len;
+       int ret;
+
+       if (!_event_notifier_group_data)
+               return -EINVAL;
+
+       event_notifier_group_data = zmalloc(sizeof(*event_notifier_group_data));
+       if (!event_notifier_group_data)
+               return -ENOMEM;
+
+       event_notifier_group_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER_GROUP;
+
+       memset(&lum, 0, sizeof(lum));
+       lum.handle = LTTNG_UST_ROOT_HANDLE;
+       lum.cmd = LTTNG_UST_EVENT_NOTIFIER_GROUP_CREATE;
+
+       ret = ustcomm_send_app_msg(sock, &lum);
+       if (ret)
+               goto error;
+
+       /* Send event_notifier notification pipe. */
+       len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1);
+       if (len <= 0) {
+               ret = len;
+               goto error;
+       }
+
+       ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+       if (ret)
+               goto error;
+
+       event_notifier_group_data->handle = lur.ret_val;
+       DBG("received event_notifier group handle %d", event_notifier_group_data->handle);
+
+       *_event_notifier_group_data = event_notifier_group_data;
+
+       ret = 0;
+       goto end;
+error:
+       free(event_notifier_group_data);
+
+end:
+       return ret;
+}
+
+int ustctl_create_event_notifier(int sock, struct lttng_ust_event_notifier *event_notifier,
+               struct lttng_ust_object_data *event_notifier_group,
+               struct lttng_ust_object_data **_event_notifier_data)
+{
+       struct ustcomm_ust_msg lum;
+       struct ustcomm_ust_reply lur;
+       struct lttng_ust_object_data *event_notifier_data;
+       int ret;
+
+       if (!event_notifier_group || !_event_notifier_data)
+               return -EINVAL;
+
+       event_notifier_data = zmalloc(sizeof(*event_notifier_data));
+       if (!event_notifier_data)
+               return -ENOMEM;
+
+       event_notifier_data->type = LTTNG_UST_OBJECT_TYPE_EVENT_NOTIFIER;
+
+       memset(&lum, 0, sizeof(lum));
+       lum.handle = event_notifier_group->handle;
+       lum.cmd = LTTNG_UST_EVENT_NOTIFIER_CREATE;
+
+       strncpy(lum.u.event_notifier.event.name, event_notifier->event.name,
+               LTTNG_UST_SYM_NAME_LEN);
+       lum.u.event_notifier.event.instrumentation = event_notifier->event.instrumentation;
+       lum.u.event_notifier.event.loglevel_type = event_notifier->event.loglevel_type;
+       lum.u.event_notifier.event.loglevel = event_notifier->event.loglevel;
+       lum.u.event_notifier.event.token = event_notifier->event.token;
+       ret = ustcomm_send_app_cmd(sock, &lum, &lur);
+       if (ret) {
+               free(event_notifier_data);
+               return ret;
+       }
+       event_notifier_data->handle = lur.ret_val;
+       DBG("received event_notifier handle %u", event_notifier_data->handle);
+       *_event_notifier_data = event_notifier_data;
+
+       return ret;
+}
+
 int ustctl_tracepoint_list(int sock)
 {
        struct ustcomm_ust_msg lum;