+/*
+ * set_session_daemon_path
+ *
+ * Set sessiond socket path by putting it in
+ * the global sessiond_sock_path variable.
+ */
+static int set_session_daemon_path(void)
+{
+ int ret;
+
+ /* Are we in the tracing group ? */
+ ret = check_tracing_group(tracing_group);
+ if (ret < 0 && getuid() != 0) {
+ if (sprintf(sessiond_sock_path, DEFAULT_HOME_CLIENT_UNIX_SOCK,
+ getenv("HOME")) < 0) {
+ return -ENOMEM;
+ }
+ } else {
+ strncpy(sessiond_sock_path, DEFAULT_GLOBAL_CLIENT_UNIX_SOCK,
+ sizeof(DEFAULT_GLOBAL_CLIENT_UNIX_SOCK));
+ }
+
+ return 0;
+}
+
+/*
+ * BEGIN KERNEL CONTROL
+ */
+
+/*
+ * lttng_kernel_enable_event
+ *
+ * Enable an event in the kernel tracer.
+ */
+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);
+}
+
+/*
+ * lttng_kernel_disable_event
+ *
+ * Disable an event in the kernel tracer.
+ */
+int lttng_kernel_disable_event(char *event_name)
+{
+ strncpy(lsm.u.event.event_name, event_name, NAME_MAX);
+ return ask_sessiond(KERNEL_DISABLE_EVENT, NULL);
+}
+
+/*
+ * lttng_kernel_create_session
+ *
+ * Create a session in the kernel tracer.
+ */
+int lttng_kernel_create_session(void)
+{
+ return ask_sessiond(KERNEL_CREATE_SESSION, NULL);
+}
+
+/*
+ * lttng_kernel_create_channel
+ *
+ * Create a channel in the kernel tracer.
+ */
+int lttng_kernel_create_channel(void)
+{
+ return ask_sessiond(KERNEL_CREATE_CHANNEL, NULL);
+}
+
+/*
+ * lttng_kernel_open_metadata
+ *
+ * Open metadata in the kernel tracer.
+ */
+int lttng_kernel_open_metadata(void)
+{
+ return ask_sessiond(KERNEL_OPEN_METADATA, NULL);
+}
+
+/*
+ * lttng_kernel_create_stream
+ *
+ * Create stream in the kernel tracer.
+ */
+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
+ *
+ * Start kernel tracing.
+ */
+int lttng_kernel_start_tracing(void)
+{
+ return ask_sessiond(KERNEL_START_TRACE, NULL);
+}
+
+/*
+ * lttng_kernel_stop_tracing
+ *
+ * Stop kernel tracing.
+ */
+int lttng_kernel_stop_tracing(void)
+{
+ return ask_sessiond(KERNEL_STOP_TRACE, NULL);
+}
+
+/*
+ * END KERNEL CONTROL
+ */
+