+ /*
+ * The currently active tracing path is now the folder we
+ * want to rotate.
+ */
+ ret = lttng_strncpy(session->rotation_chunk.current_rotate_path,
+ session->rotation_chunk.active_tracing_path,
+ sizeof(session->rotation_chunk.current_rotate_path));
+ if (ret) {
+ ERR("Failed to copy the active tracing path to the current rotate path");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto end;
+ }
+ }
+ DBG("Current rotate path %s", session->rotation_chunk.current_rotate_path);
+
+ /*
+ * Channels created after this point will belong to the next
+ * archive id.
+ */
+ session->current_archive_id++;
+
+ now = time(NULL);
+ if (now == (time_t) -1) {
+ cmd_ret = LTTNG_ERR_ROTATION_NOT_AVAILABLE;
+ goto end;
+ }
+
+ /* Sample chunk bounds for roll-back in case of error. */
+ original_last_chunk_start_ts = session->last_chunk_start_ts;
+ original_current_chunk_start_ts = session->current_chunk_start_ts;
+
+ session->last_chunk_start_ts = session->current_chunk_start_ts;
+ session->current_chunk_start_ts = now;
+
+ timeinfo = localtime(&now);
+ if (!timeinfo) {
+ PERROR("Failed to sample local time in rotate session command");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto end;
+ }
+ strf_ret = strftime(datetime, sizeof(datetime), "%Y%m%dT%H%M%S%z",
+ timeinfo);
+ if (!strf_ret) {
+ ERR("Failed to format local time timestamp in rotate session command");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto end;
+ }
+
+ /*
+ * A rotation has a local step even if the destination is a relay
+ * daemon; the buffers must be consumed by the consumer daemon.
+ */
+ session->rotation_pending_local = true;
+ session->rotation_pending_relay =
+ session_get_consumer_destination_type(session) == CONSUMER_DST_NET;
+ session->rotation_state = LTTNG_ROTATION_STATE_ONGOING;
+
+ if (session->kernel_session) {
+ /*
+ * The active path for the next rotation/destroy.
+ * Ex: ~/lttng-traces/auto-20170922-111748/20170922-111754-42
+ */
+ ret = snprintf(session->rotation_chunk.active_tracing_path,
+ sizeof(session->rotation_chunk.active_tracing_path),
+ "%s/%s-%" PRIu64,
+ session_get_base_path(session),
+ datetime, session->current_archive_id + 1);
+ if (ret < 0 || ret == sizeof(session->rotation_chunk.active_tracing_path)) {
+ ERR("Failed to format active kernel tracing path in rotate session command");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto error;
+ }
+ /*
+ * The sub-directory for the consumer
+ * Ex: /20170922-111754-42/kernel
+ */
+ ret = snprintf(session->kernel_session->consumer->chunk_path,
+ sizeof(session->kernel_session->consumer->chunk_path),
+ "/%s-%" PRIu64, datetime,
+ session->current_archive_id + 1);
+ if (ret < 0 || ret == sizeof(session->kernel_session->consumer->chunk_path)) {
+ ERR("Failed to format the kernel consumer's sub-directory in rotate session command");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto error;
+ }
+ /*
+ * Create the new chunk folder, before the rotation begins so we don't
+ * race with the consumer/tracer activity.
+ */
+ ret = domain_mkdir(session->kernel_session->consumer, session,
+ session->kernel_session->uid,
+ session->kernel_session->gid);
+ if (ret) {
+ ERR("Failed to create kernel session tracing path at %s",
+ session->kernel_session->consumer->chunk_path);
+ cmd_ret = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto error;
+ }
+ cmd_ret = kernel_rotate_session(session);
+ if (cmd_ret != LTTNG_OK) {
+ goto error;
+ }
+ }
+ if (session->ust_session) {
+ ret = snprintf(session->rotation_chunk.active_tracing_path,
+ PATH_MAX, "%s/%s-%" PRIu64,
+ session_get_base_path(session),
+ datetime, session->current_archive_id + 1);
+ if (ret < 0) {
+ ERR("Failed to format active UST tracing path in rotate session command");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto error;
+ }
+ ret = snprintf(session->ust_session->consumer->chunk_path,
+ PATH_MAX, "/%s-%" PRIu64, datetime,
+ session->current_archive_id + 1);
+ if (ret < 0) {
+ ERR("Failed to format the UST consumer's sub-directory in rotate session command");
+ cmd_ret = LTTNG_ERR_UNK;
+ goto error;
+ }
+ /*
+ * Create the new chunk folder, before the rotation begins so we don't
+ * race with the consumer/tracer activity.
+ */
+ ret = domain_mkdir(session->ust_session->consumer, session,
+ session->ust_session->uid,
+ session->ust_session->gid);
+ if (ret) {
+ cmd_ret = LTTNG_ERR_CREATE_DIR_FAIL;
+ goto error;
+ }
+ cmd_ret = ust_app_rotate_session(session);
+ if (cmd_ret != LTTNG_OK) {
+ goto error;
+ }
+ }
+
+ ret = timer_session_rotation_pending_check_start(session,
+ DEFAULT_ROTATE_PENDING_TIMER);
+ if (ret) {
+ cmd_ret = LTTNG_ERR_UNK;
+ goto error;