+static int lttng_ust_trigger_enabler_create(int trigger_group_obj, void *owner,
+ struct lttng_ust_trigger *trigger_param,
+ enum lttng_enabler_format_type type)
+{
+ struct lttng_trigger_group *trigger_group =
+ objd_private(trigger_group_obj);
+ struct lttng_trigger_enabler *trigger_enabler;
+ int trigger_objd, ret;
+
+ trigger_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
+ trigger_objd = objd_alloc(NULL, <tng_trigger_enabler_ops, owner,
+ "trigger enabler");
+ if (trigger_objd < 0) {
+ ret = trigger_objd;
+ goto objd_error;
+ }
+
+ trigger_enabler = lttng_trigger_enabler_create(trigger_group, type,
+ trigger_param);
+ if (!trigger_enabler) {
+ ret = -ENOMEM;
+ goto trigger_error;
+ }
+
+ objd_set_private(trigger_objd, trigger_enabler);
+ /* The trigger holds a reference on the trigger group. */
+ objd_ref(trigger_enabler->group->objd);
+
+ return trigger_objd;
+
+trigger_error:
+ {
+ int err;
+
+ err = lttng_ust_objd_unref(trigger_objd, 1);
+ assert(!err);
+ }
+objd_error:
+ return ret;
+}
+
+static
+long lttng_trigger_enabler_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs, void *owner)
+{
+ struct lttng_trigger_enabler *trigger_enabler = objd_private(objd);
+ switch (cmd) {
+ case LTTNG_UST_FILTER:
+ return lttng_trigger_enabler_attach_filter_bytecode(
+ trigger_enabler,
+ (struct lttng_ust_bytecode_node *) arg);
+ case LTTNG_UST_EXCLUSION:
+ return lttng_trigger_enabler_attach_exclusion(trigger_enabler,
+ (struct lttng_ust_excluder_node *) arg);
+ case LTTNG_UST_CAPTURE:
+ return lttng_trigger_enabler_attach_capture_bytecode(
+ trigger_enabler,
+ (struct lttng_ust_bytecode_node *) arg);
+ case LTTNG_UST_ENABLE:
+ return lttng_trigger_enabler_enable(trigger_enabler);
+ case LTTNG_UST_DISABLE:
+ return lttng_trigger_enabler_disable(trigger_enabler);
+ default:
+ return -EINVAL;
+ }
+}
+
+/**
+ * lttng_trigger_group_error_counter_cmd - lttng trigger group error counter object command
+ *
+ * @obj: the object
+ * @cmd: the command
+ * @arg: command arg
+ * @uargs: UST arguments (internal)
+ * @owner: objd owner
+ *
+ * This descriptor implements lttng commands:
+ * LTTNG_UST_COUNTER_GLOBAL
+ * Return negative error code on error, 0 on success.
+ * LTTNG_UST_COUNTER_CPU
+ * Return negative error code on error, 0 on success.
+ */
+static
+long lttng_trigger_group_error_counter_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs, void *owner)
+{
+ struct lttng_counter *counter = objd_private(objd);
+
+ switch (cmd) {
+ case LTTNG_UST_COUNTER_GLOBAL:
+ return -EINVAL; /* Unimplemented. */
+ case LTTNG_UST_COUNTER_CPU:
+ {
+ struct lttng_ust_counter_cpu *counter_cpu =
+ (struct lttng_ust_counter_cpu *)arg;
+ return lttng_counter_set_cpu_shm(counter->counter,
+ counter_cpu->cpu_nr, uargs->counter_shm.shm_fd);
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+int lttng_release_trigger_group_error_counter(int objd)
+{
+ struct lttng_counter *counter = objd_private(objd);
+
+ if (counter) {
+ return lttng_ust_objd_unref(counter->trigger_group->objd, 0);
+ } else {
+ return -EINVAL;
+ }
+}
+
+static const struct lttng_ust_objd_ops lttng_trigger_group_error_counter_ops = {
+ .release = lttng_release_trigger_group_error_counter,
+ .cmd = lttng_trigger_group_error_counter_cmd,
+};
+
+static
+int lttng_ust_trigger_group_create_error_counter(int trigger_group_objd, void *owner,
+ struct lttng_ust_counter_conf *error_counter_conf)
+{
+ const char *counter_transport_name;
+ struct lttng_trigger_group *trigger_group =
+ objd_private(trigger_group_objd);
+ struct lttng_counter *counter;
+ int counter_objd, ret;
+ struct lttng_counter_dimension dimensions[1];
+ size_t counter_len;
+
+ if (trigger_group->error_counter)
+ return -EBUSY;
+
+ if (error_counter_conf->arithmetic != LTTNG_UST_COUNTER_ARITHMETIC_MODULAR)
+ return -EINVAL;
+
+ if (error_counter_conf->number_dimensions != 1)
+ return -EINVAL;
+
+ switch (error_counter_conf->bitness) {
+ case LTTNG_UST_COUNTER_BITNESS_64BITS:
+ counter_transport_name = "counter-per-cpu-64-modular";
+ break;
+ case LTTNG_UST_COUNTER_BITNESS_32BITS:
+ counter_transport_name = "counter-per-cpu-32-modular";
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ counter_objd = objd_alloc(NULL, <tng_trigger_group_error_counter_ops, owner,
+ "trigger group error counter");
+ if (counter_objd < 0) {
+ ret = counter_objd;
+ goto objd_error;
+ }
+
+ counter_len = error_counter_conf->dimensions[0].size;
+ dimensions[0].size = counter_len;
+ dimensions[0].underflow_index = 0;
+ dimensions[0].overflow_index = 0;
+ dimensions[0].has_underflow = 0;
+ dimensions[0].has_overflow = 0;
+
+ counter = lttng_ust_counter_create(counter_transport_name, 1, dimensions);
+ if (!counter) {
+ ret = -EINVAL;
+ goto create_error;
+ }
+
+ trigger_group->error_counter = counter;
+ trigger_group->error_counter_len = counter_len;
+
+ counter->objd = counter_objd;
+ counter->trigger_group = trigger_group; /* owner */
+
+ objd_set_private(counter_objd, counter);
+ /* The error counter holds a reference on the trigger group. */
+ objd_ref(trigger_group->objd);
+
+ return counter_objd;
+
+create_error:
+ {
+ int err;
+
+ err = lttng_ust_objd_unref(counter_objd, 1);
+ assert(!err);
+ }
+objd_error:
+ return ret;
+}
+
+static
+long lttng_trigger_group_cmd(int objd, unsigned int cmd, unsigned long arg,
+ union ust_args *uargs, void *owner)
+{
+ switch (cmd) {
+ case LTTNG_UST_TRIGGER_CREATE:
+ {
+ struct lttng_ust_trigger *trigger_param =
+ (struct lttng_ust_trigger *) arg;
+ if (strutils_is_star_glob_pattern(trigger_param->name)) {
+ /*
+ * If the event name is a star globbing pattern,
+ * we create the special star globbing enabler.
+ */
+ return lttng_ust_trigger_enabler_create(objd, owner,
+ trigger_param, LTTNG_ENABLER_FORMAT_STAR_GLOB);
+ } else {
+ return lttng_ust_trigger_enabler_create(objd, owner,
+ trigger_param, LTTNG_ENABLER_FORMAT_EVENT);
+ }
+ }
+ case LTTNG_UST_COUNTER:
+ {
+ struct lttng_ust_counter_conf *counter_conf =
+ (struct lttng_ust_counter_conf *) uargs->counter.counter_data;
+ return lttng_ust_trigger_group_create_error_counter(objd, owner,
+ counter_conf);
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+static
+int lttng_trigger_enabler_release(int objd)
+{
+ struct lttng_trigger_enabler *trigger_enabler = objd_private(objd);
+
+ if (trigger_enabler)
+ return lttng_ust_objd_unref(trigger_enabler->group->objd, 0);
+ return 0;
+}
+
+static const struct lttng_ust_objd_ops lttng_trigger_enabler_ops = {
+ .release = lttng_trigger_enabler_release,
+ .cmd = lttng_trigger_enabler_cmd,
+};
+
+static
+int lttng_release_trigger_group(int objd)
+{
+ struct lttng_trigger_group *trigger_group = objd_private(objd);
+
+ if (trigger_group) {
+ lttng_trigger_group_destroy(trigger_group);
+ return 0;
+ } else {
+ return -EINVAL;
+ }
+}
+
+static const struct lttng_ust_objd_ops lttng_trigger_group_ops = {
+ .release = lttng_release_trigger_group,
+ .cmd = lttng_trigger_group_cmd,
+};
+