X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=liblttngctl%2Fliblttngctl.c;h=c27ce092825595692b91e4552b250a190dcf486f;hp=3ff1529a1857434202ac7acbd7f1d71fe1a3607b;hb=64a23ac4e22093a782b87fe615fabf20edacedd2;hpb=6abb15de23fcd1413963aef20f9f2c243f1bf749

diff --git a/liblttngctl/liblttngctl.c b/liblttngctl/liblttngctl.c
index 3ff1529a1..c27ce0928 100644
--- a/liblttngctl/liblttngctl.c
+++ b/liblttngctl/liblttngctl.c
@@ -35,7 +35,7 @@ static char sessiond_sock_path[PATH_MAX];
 
 /* Communication structure to ltt-sessiond */
 static struct lttcomm_session_msg lsm;
-static struct lttcomm_lttng_header llh;
+static struct lttcomm_lttng_msg llm;
 
 /* Prototypes */
 static int check_tracing_group(const char *grp_name);
@@ -125,18 +125,18 @@ static int ask_sessiond(enum lttcomm_sessiond_command lct, void **buf)
 	}
 
 	/* Get header from data transmission */
-	ret = recv_data_sessiond(&llh, sizeof(llh));
+	ret = recv_data_sessiond(&llm, sizeof(llm));
 	if (ret < 0) {
 		goto end;
 	}
 
 	/* Check error code if OK */
-	if (llh.ret_code != LTTCOMM_OK) {
-		ret = -llh.ret_code;
+	if (llm.ret_code != LTTCOMM_OK) {
+		ret = -llm.ret_code;
 		goto end;
 	}
 
-	size = llh.payload_size;
+	size = llm.trace_name_offset + llm.data_size;
 	if (size == 0) {
 		goto end;
 	}
@@ -154,10 +154,99 @@ static int ask_sessiond(enum lttcomm_sessiond_command lct, void **buf)
 
 end:
 	lttng_disconnect_sessiond();
-	memset(&lsm, 0, sizeof(lsm));
 	return ret;
 }
 
+/*
+ * 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_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
+ */
+
 /*
  *  lttng_get_readable_code
  *
@@ -250,7 +339,7 @@ int lttng_list_traces(uuid_t *uuid, struct lttng_trace **traces)
 {
 	int ret;
 
-	uuid_copy(lsm.session_id, *uuid);
+	uuid_copy(lsm.session_uuid, *uuid);
 
 	ret = ask_sessiond(LTTNG_LIST_TRACES, (void **) traces);
 	if (ret < 0) {
@@ -263,10 +352,9 @@ int lttng_list_traces(uuid_t *uuid, struct lttng_trace **traces)
 /*
  *  lttng_create_session
  *
- *  Create a brand new session using name. Allocate
- *  the session_id param pointing to the UUID.
+ *  Create a brand new session using name.
  */
-int lttng_create_session(char *name, uuid_t *session_id)
+int lttng_create_session(char *name)
 {
 	int ret;
 
@@ -278,8 +366,6 @@ int lttng_create_session(char *name, uuid_t *session_id)
 		goto end;
 	}
 
-	uuid_copy(*session_id, llh.session_id);
-
 end:
 	return ret;
 }
@@ -293,7 +379,7 @@ int lttng_destroy_session(uuid_t *uuid)
 {
 	int ret;
 
-	uuid_copy(lsm.session_id, *uuid);
+	uuid_copy(lsm.session_uuid, *uuid);
 
 	ret = ask_sessiond(LTTNG_DESTROY_SESSION, NULL);
 	if (ret < 0) {
@@ -377,7 +463,7 @@ int lttng_disconnect_sessiond(void)
  */
 void lttng_set_current_session_uuid(uuid_t *uuid)
 {
-	uuid_copy(lsm.session_id, *uuid);
+	uuid_copy(lsm.session_uuid, *uuid);
 }
 
 /*
@@ -431,7 +517,7 @@ static int set_session_daemon_path(void)
 
 	/* Are we in the tracing group ? */
 	ret = check_tracing_group(tracing_group);
-	if (ret < 0) {
+	if (ret < 0 && getuid() != 0) {
 		if (sprintf(sessiond_sock_path, DEFAULT_HOME_CLIENT_UNIX_SOCK,
 					getenv("HOME")) < 0) {
 			return -ENOMEM;
@@ -502,5 +588,5 @@ end:
 static void __attribute__((constructor)) init()
 {
 	/* Set default session group */
-	lttng_set_tracing_group(DEFAULT_TRACING_GROUP);
+	lttng_set_tracing_group(LTTNG_DEFAULT_TRACING_GROUP);
 }