static const struct lttng_ust_objd_ops lttng_channel_ops;
static const struct lttng_ust_objd_ops lttng_metadata_ops;
static const struct lttng_ust_objd_ops lttng_event_ops;
+static const struct lttng_ust_objd_ops lttng_loglevel_ops;
static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops;
static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops;
return ret;
}
+static
+int lttng_abi_create_loglevel(int channel_objd,
+ struct lttng_ust_event *event_param)
+{
+ struct ltt_channel *channel = objd_private(channel_objd);
+ struct loglevel_entry *loglevel;
+ int loglevel_objd, ret;
+
+ event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ loglevel_objd = objd_alloc(NULL, <tng_loglevel_ops);
+ if (loglevel_objd < 0) {
+ ret = loglevel_objd;
+ goto objd_error;
+ }
+ /*
+ * We tolerate no failure path after loglevel creation. It will
+ * stay invariant for the rest of the session.
+ */
+ ret = ltt_loglevel_create(channel, event_param, &loglevel);
+ if (ret < 0) {
+ goto loglevel_error;
+ }
+ objd_set_private(loglevel_objd, loglevel);
+ /* The loglevel holds a reference on the channel */
+ objd_ref(channel_objd);
+ return loglevel_objd;
+
+loglevel_error:
+ {
+ int err;
+
+ err = lttng_ust_objd_unref(loglevel_objd);
+ assert(!err);
+ }
+objd_error:
+ return ret;
+}
+
/**
* lttng_channel_cmd - lttng control through object descriptors
*
return lttng_abi_open_stream(objd, stream);
}
case LTTNG_UST_EVENT:
- return lttng_abi_create_event(objd, (struct lttng_ust_event *) arg);
+ {
+ struct lttng_ust_event *event_param =
+ (struct lttng_ust_event *) arg;
+ if (event_param->instrumentation == LTTNG_UST_TRACEPOINT_LOGLEVEL) {
+ return lttng_abi_create_loglevel(objd, event_param);
+ } else {
+ return lttng_abi_create_event(objd, event_param);
+ }
+ }
case LTTNG_UST_CONTEXT:
return lttng_abi_add_context(objd,
(struct lttng_ust_context *) arg,
.cmd = lttng_event_cmd,
};
+/**
+ * lttng_loglevel_cmd - lttng control through object descriptors
+ *
+ * @objd: the object descriptor
+ * @cmd: the command
+ * @arg: command arg
+ *
+ * This object descriptor implements lttng commands:
+ * LTTNG_UST_CONTEXT
+ * Prepend a context field to each record of events of this
+ * loglevel.
+ * LTTNG_UST_ENABLE
+ * Enable recording for these loglevel events (weak enable)
+ * LTTNG_UST_DISABLE
+ * Disable recording for these loglevel events (strong disable)
+ */
+static
+long lttng_loglevel_cmd(int objd, unsigned int cmd, unsigned long arg)
+{
+ struct loglevel_entry *loglevel = objd_private(objd);
+
+ switch (cmd) {
+ case LTTNG_UST_CONTEXT:
+ return -ENOSYS; /* not implemented yet */
+#if 0
+ return lttng_abi_add_context(objd,
+ (struct lttng_ust_context *) arg,
+ &loglevel->ctx, loglevel->chan->session);
+#endif
+ case LTTNG_UST_ENABLE:
+ return ltt_loglevel_enable(loglevel);
+ case LTTNG_UST_DISABLE:
+ return ltt_loglevel_disable(loglevel);
+ default:
+ return -EINVAL;
+ }
+}
+
+static
+int lttng_loglevel_release(int objd)
+{
+ struct loglevel_entry *loglevel = objd_private(objd);
+
+ if (loglevel)
+ return lttng_ust_objd_unref(loglevel->chan->objd);
+ return 0;
+}
+
+/* TODO: filter control ioctl */
+static const struct lttng_ust_objd_ops lttng_loglevel_ops = {
+ .release = lttng_loglevel_release,
+ .cmd = lttng_loglevel_cmd,
+};
+
void lttng_ust_abi_exit(void)
{
lttng_ust_abi_close_in_progress = 1;