X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=liblttngctl%2Fliblttngctl.c;h=e05496a9449891f5f6174af5ed4de3c9ce1f5f0e;hp=cad4d735eed17aff794aa5aae95892f505198ef0;hb=94cf3c47fe93b891dac6206bbcf712d042d15727;hpb=26cc6b4e17dc888cd894ef1f42a83c59d7f8a95f

diff --git a/liblttngctl/liblttngctl.c b/liblttngctl/liblttngctl.c
index cad4d735e..e05496a94 100644
--- a/liblttngctl/liblttngctl.c
+++ b/liblttngctl/liblttngctl.c
@@ -251,6 +251,24 @@ int lttng_stop_tracing(char *session_name)
  * BEGIN Kernel control API
  */
 
+/*
+ *  lttng_kernel_add_context
+ */
+int lttng_kernel_add_context(struct lttng_kernel_context *ctx,
+		char *event_name, char *channel_name)
+{
+	if (channel_name != NULL) {
+		strncpy(lsm.u.context.channel_name, channel_name, NAME_MAX);
+	}
+
+	if (event_name != NULL) {
+		strncpy(lsm.u.context.event_name, event_name, NAME_MAX);
+	}
+
+	memcpy(&lsm.u.context.ctx, ctx, sizeof(struct lttng_kernel_context));
+	return ask_sessiond(LTTNG_KERNEL_ADD_CONTEXT, NULL);
+}
+
 /*
  *  lttng_kernel_enable_event
  */
@@ -258,7 +276,7 @@ int lttng_kernel_enable_event(struct lttng_event *ev, char *channel_name)
 {
 	int ret;
 
-	if (strlen(channel_name) == 0) {
+	if (channel_name == NULL) {
 		strncpy(lsm.u.enable.channel_name, DEFAULT_CHANNEL_NAME, NAME_MAX);
 	} else {
 		strncpy(lsm.u.enable.channel_name, channel_name, NAME_MAX);
@@ -283,7 +301,7 @@ int lttng_kernel_disable_event(char *name, char *channel_name)
 {
 	int ret;
 
-	if (strlen(channel_name) == 0) {
+	if (channel_name == NULL) {
 		strncpy(lsm.u.disable.channel_name, DEFAULT_CHANNEL_NAME, NAME_MAX);
 	} else {
 		strncpy(lsm.u.disable.channel_name, channel_name, NAME_MAX);