Rotate timer

[lttng-tools.git] / src / bin / lttng-sessiond / main.c

diff --git a/src/bin/lttng-sessiond/main.c b/src/bin/lttng-sessiond/main.c
index 226433ead4057a3b1751de9d60e8c6e7aa3f0e09..5e4148fb6e707fc653dfa3cea4f0c883c8bd0f7f 100644 (file)
--- a/src/bin/lttng-sessiond/main.c
+++ b/src/bin/lttng-sessiond/main.c
@@ -2966,6 +2966,7 @@ static int process_client_msg(struct command_ctx *cmd_ctx, int sock,
        case LTTNG_ROTATE_SESSION:
        case LTTNG_ROTATION_GET_INFO:
        case LTTNG_SESSION_GET_CURRENT_OUTPUT:
+       case LTTNG_ROTATION_SET_SCHEDULE:
                need_domain = 0;
                break;
        default:
@@ -3701,6 +3702,20 @@ error_add_context:
        }
        case LTTNG_START_TRACE:
        {
+               /*
+                * On the first start, if we have a kernel session and we have
+                * enabled time or size-based rotations, we have to make sure
+                * the kernel tracer supports it.
+                */
+               if (!cmd_ctx->session->has_been_started && \
+                               cmd_ctx->session->kernel_session && \
+                               (cmd_ctx->session->rotate_timer_period || \
+                                       cmd_ctx->session->rotate_size) && \
+                               !check_rotate_compatible()) {
+                       DBG("Kernel tracer version is not compatible with the rotation feature");
+                       ret = LTTNG_ERR_ROTATION_WRONG_VERSION;
+                       goto error;
+               }
                ret = cmd_start_trace(cmd_ctx->session);
                break;
        }
@@ -4171,6 +4186,25 @@ error_add_context:
                ret = LTTNG_OK;
                break;
        }
+       case LTTNG_ROTATION_SET_SCHEDULE:
+       {
+               if (cmd_ctx->session->kernel_session && !check_rotate_compatible()) {
+                       DBG("Kernel tracer version does not support session rotations");
+                       ret = LTTNG_ERR_ROTATION_WRONG_VERSION;
+                       goto error;
+               }
+
+               ret = cmd_rotation_set_schedule(cmd_ctx->session,
+                               cmd_ctx->lsm->u.rotate_setup.timer_us,
+                               cmd_ctx->lsm->u.rotate_setup.size);
+               if (ret < 0) {
+                       ret = -ret;
+                       goto error;
+               }
+
+               ret = LTTNG_OK;
+               break;
+       }
        default:
                ret = LTTNG_ERR_UND;
                break;