#include "ust-consumer.h"
#include "ust-ctl.h"
#include "fd-limit.h"
+#include "../../common/sessiond-comm/sessiond-comm.h"
/*
* Delete ust context safely. RCU read lock must be held before calling
assert(!ret);
delete_ust_app_ctx(sock, ua_ctx);
}
+ free(ua_event->filter);
lttng_ht_destroy(ua_event->ctx);
if (ua_event->obj != NULL) {
return ret;
}
+/*
+ * Set the filter on the tracer.
+ */
+static
+int set_ust_event_filter(struct ust_app_event *ua_event,
+ struct ust_app *app)
+{
+ int ret;
+
+ if (!ua_event->filter) {
+ return 0;
+ }
+
+ ret = ustctl_set_filter(app->sock, ua_event->filter,
+ ua_event->obj);
+ if (ret < 0) {
+ goto error;
+ }
+
+ DBG2("UST filter set successfully for event %s", ua_event->name);
+
+error:
+ return ret;
+}
+
/*
* Disable the specified event on to UST tracer for the UST session.
*/
/* Copy event attributes */
memcpy(&ua_event->attr, &uevent->attr, sizeof(ua_event->attr));
+ /* Copy filter bytecode */
+ if (uevent->filter) {
+ ua_event->filter = zmalloc(sizeof(*ua_event->filter) +
+ uevent->filter->len);
+ if (!ua_event->filter) {
+ return;
+ }
+ memcpy(ua_event->filter, uevent->filter,
+ sizeof(*ua_event->filter) + uevent->filter->len);
+ }
cds_lfht_for_each_entry(uevent->ctx->ht, &iter.iter, uctx, node.node) {
ua_ctx = alloc_ust_app_ctx(&uctx->ctx);
if (ua_ctx == NULL) {
return ret;
}
+/*
+ * Set UST filter for the event on the tracer.
+ */
+static
+int set_ust_app_event_filter(struct ust_app_session *ua_sess,
+ struct ust_app_event *ua_event,
+ struct lttng_filter_bytecode *bytecode,
+ struct ust_app *app)
+{
+ int ret = 0;
+
+ DBG2("UST app adding context to event %s", ua_event->name);
+
+ /* Copy filter bytecode */
+ ua_event->filter = zmalloc(sizeof(*ua_event->filter) + bytecode->len);
+ if (!ua_event->filter) {
+ return -ENOMEM;
+ }
+ memcpy(ua_event->filter, bytecode,
+ sizeof(*ua_event->filter) + bytecode->len);
+ ret = set_ust_event_filter(ua_event, app);
+ if (ret < 0) {
+ goto error;
+ }
+
+error:
+ return ret;
+}
+
/*
* Enable on the tracer side a ust app event for the session and channel.
*/
continue;
}
}
+ ret = set_ust_event_filter(ua_event, app);
+ if (ret < 0) {
+ /* FIXME: Should we quit here or continue... */
+ continue;
+ }
}
}
return ret;
}
+/*
+ * Add context to a specific event in a channel for global UST domain.
+ */
+int ust_app_set_filter_event_glb(struct ltt_ust_session *usess,
+ struct ltt_ust_channel *uchan, struct ltt_ust_event *uevent,
+ struct lttng_filter_bytecode *bytecode)
+{
+ int ret = 0;
+ struct lttng_ht_node_str *ua_chan_node, *ua_event_node;
+ struct lttng_ht_iter iter, uiter;
+ struct ust_app_session *ua_sess;
+ struct ust_app_event *ua_event;
+ struct ust_app_channel *ua_chan = NULL;
+ struct ust_app *app;
+
+ rcu_read_lock();
+
+ cds_lfht_for_each_entry(ust_app_ht->ht, &iter.iter, app, pid_n.node) {
+ if (!app->compatible) {
+ /*
+ * TODO: In time, we should notice the caller of this error by
+ * telling him that this is a version error.
+ */
+ continue;
+ }
+ ua_sess = lookup_session_by_app(usess, app);
+ if (ua_sess == NULL) {
+ continue;
+ }
+
+ /* Lookup channel in the ust app session */
+ lttng_ht_lookup(ua_sess->channels, (void *)uchan->name, &uiter);
+ ua_chan_node = lttng_ht_iter_get_node_str(&uiter);
+ if (ua_chan_node == NULL) {
+ continue;
+ }
+ ua_chan = caa_container_of(ua_chan_node, struct ust_app_channel,
+ node);
+
+ lttng_ht_lookup(ua_chan->events, (void *)uevent->attr.name, &uiter);
+ ua_event_node = lttng_ht_iter_get_node_str(&uiter);
+ if (ua_event_node == NULL) {
+ continue;
+ }
+ ua_event = caa_container_of(ua_event_node, struct ust_app_event,
+ node);
+
+ ret = set_ust_app_event_filter(ua_sess, ua_event, bytecode, app);
+ if (ret < 0) {
+ continue;
+ }
+ }
+
+ rcu_read_unlock();
+ return ret;
+}
+
/*
* Enable event for a channel from a UST session for a specific PID.
*/