sessiond: lttng: Add command to check kernel tracer status

[lttng-tools.git] / src / bin / lttng-sessiond / cmd.cpp

diff --git a/src/bin/lttng-sessiond/cmd.cpp b/src/bin/lttng-sessiond/cmd.cpp
index c1588bc3a37dc3dc1dd9b0facf981a33707b4111..b1e0c098594f26004bdf329567a6b6eb08731dac 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.cpp
+++ b/src/bin/lttng-sessiond/cmd.cpp
@@ -55,6 +55,7 @@
 #include <lttng/event-internal.hpp>
 #include <lttng/event-rule/event-rule-internal.hpp>
 #include <lttng/event-rule/event-rule.h>
+#include <lttng/kernel.h>
 #include <lttng/location-internal.hpp>
 #include <lttng/lttng-error.h>
 #include <lttng/rotate-internal.hpp>
@@ -4017,6 +4018,19 @@ void cmd_list_lttng_sessions(struct lttng_session *sessions,
        }
 }
 
+/*
+ * Command LTTCOMM_SESSIOND_COMMAND_KERNEL_TRACER_STATUS
+ */
+enum lttng_error_code cmd_kernel_tracer_status(enum lttng_kernel_tracer_status *status)
+{
+       if (status == nullptr) {
+               return LTTNG_ERR_INVALID;
+       }
+
+       *status = get_kernel_tracer_status();
+       return LTTNG_OK;
+}
+
 /*
  * Command LTTNG_DATA_PENDING returning 0 if the data is NOT pending meaning
  * ready for trace analysis (or any kind of reader) or else 1 for pending data.