SoW-2019-0002: Dynamic Snapshot

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

diff --git a/liblttng-ust-ctl/ustctl.c b/liblttng-ust-ctl/ustctl.c
index 914ce94ea024c5ace40dccf405cbb5b80ed192be..405231b296bb5227dd934ea4e4612a90facf9836 100644 (file)
--- a/liblttng-ust-ctl/ustctl.c
+++ b/liblttng-ust-ctl/ustctl.c
@@ -132,6 +132,8 @@ 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_TRIGGER_GROUP:
+       case LTTNG_UST_OBJECT_TYPE_TRIGGER:
                break;
        default:
                assert(0);
@@ -418,6 +420,91 @@ int ustctl_stop_session(int sock, int handle)
        return ustctl_disable(sock, &obj);
 }
 
+int ustctl_create_trigger_group(int sock, int pipe_fd,
+               struct lttng_ust_object_data **_trigger_group_data)
+{
+       struct lttng_ust_object_data *trigger_group_data;
+       struct ustcomm_ust_msg lum;
+       struct ustcomm_ust_reply lur;
+       ssize_t len;
+       int ret;
+
+       if (!_trigger_group_data)
+               return -EINVAL;
+
+       trigger_group_data = zmalloc(sizeof(*trigger_group_data));
+       if (!trigger_group_data)
+               return -ENOMEM;
+
+       trigger_group_data->type = LTTNG_UST_OBJECT_TYPE_TRIGGER_GROUP;
+
+       memset(&lum, 0, sizeof(lum));
+       lum.handle = LTTNG_UST_ROOT_HANDLE;
+       lum.cmd = LTTNG_UST_TRIGGER_GROUP_CREATE;
+
+       ret = ustcomm_send_app_msg(sock, &lum);
+       if (ret) {
+               return ret;
+       }
+
+       /* Send trigger notification pipe. */
+       len = ustcomm_send_fds_unix_sock(sock, &pipe_fd, 1);
+       if (len <= 0) {
+               return ret;
+       }
+
+       ret = ustcomm_recv_app_reply(sock, &lur, lum.handle, lum.cmd);
+       if (ret) {
+               return ret;
+       }
+
+       trigger_group_data->handle = lur.ret_val;
+       DBG("received trigger group handle %d", trigger_group_data->handle);
+
+       *_trigger_group_data = trigger_group_data;
+       return 0;
+}
+
+int ustctl_create_trigger(int sock, struct lttng_ust_trigger *trigger,
+               struct lttng_ust_object_data *trigger_group,
+               struct lttng_ust_object_data **_trigger_data)
+{
+       struct ustcomm_ust_msg lum;
+       struct ustcomm_ust_reply lur;
+       struct lttng_ust_object_data *trigger_data;
+       int ret;
+
+       if (!trigger_group || !_trigger_data)
+               return -EINVAL;
+
+       trigger_data = zmalloc(sizeof(*trigger_data));
+       if (!trigger_data)
+               return -ENOMEM;
+
+       trigger_data->type = LTTNG_UST_OBJECT_TYPE_TRIGGER;
+
+       memset(&lum, 0, sizeof(lum));
+       lum.handle = trigger_group->handle;
+       lum.cmd = LTTNG_UST_TRIGGER_CREATE;
+
+       strncpy(lum.u.trigger.name, trigger->name,
+               LTTNG_UST_SYM_NAME_LEN);
+       lum.u.trigger.instrumentation = trigger->instrumentation;
+       lum.u.trigger.loglevel_type = trigger->loglevel_type;
+       lum.u.trigger.loglevel = trigger->loglevel;
+       lum.u.trigger.id = trigger->id;
+       ret = ustcomm_send_app_cmd(sock, &lum, &lur);
+       if (ret) {
+               free(trigger_data);
+               return ret;
+       }
+       trigger_data->handle = lur.ret_val;
+       DBG("received event handle %u", trigger_data->handle);
+       *_trigger_data = trigger_data;
+
+       return ret;
+}
+
 int ustctl_tracepoint_list(int sock)
 {
        struct ustcomm_ust_msg lum;