Core modification and listing kernel event support

[lttng-tools.git] / liblttngctl / liblttngctl.c

diff --git a/liblttngctl/liblttngctl.c b/liblttngctl/liblttngctl.c
index 31edc982ea8ca07f57f5b2a39ab3cc31bc6e5965..eb606166c214c9bd850ca7889d961547974ab4cf 100644 (file)
--- a/liblttngctl/liblttngctl.c
+++ b/liblttngctl/liblttngctl.c
@@ -235,8 +235,16 @@ static int set_session_daemon_path(void)
  */
 int lttng_kernel_enable_event(char *event_name)
 {
-       strncpy(lsm.u.event.event_name, event_name, NAME_MAX);
-       return ask_sessiond(KERNEL_ENABLE_EVENT, NULL);
+       int ret;
+
+       if (event_name == NULL) {
+               ret = ask_sessiond(KERNEL_ENABLE_ALL_EVENT, NULL);
+       } else {
+               strncpy(lsm.u.event.event_name, event_name, NAME_MAX);
+               ret = ask_sessiond(KERNEL_ENABLE_EVENT, NULL);
+       }
+
+       return ret;
 }
 
 /*
@@ -290,6 +298,19 @@ int lttng_kernel_create_stream(void)
        return ask_sessiond(KERNEL_CREATE_STREAM, NULL);
 }
 
+/*
+ *  lttng_kernel_list_events
+ *
+ *  List all available events in the kernel.
+ *
+ *  Return the size (bytes) of the list and set the event_list array.
+ *  On error, return negative value.
+ */
+int lttng_kernel_list_events(char **event_list)
+{
+       return ask_sessiond(KERNEL_LIST_EVENTS, (void **) event_list);
+}
+
 /*
  *  lttng_kernel_start_tracing
  *