Add ust create trace feature

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

diff --git a/liblttngctl/liblttngctl.c b/liblttngctl/liblttngctl.c
index bd7dcb0c5b6f87cd146a8ceb2c5e064892a621ee..a586b34f53a61d2ba6dd630204325d1f71a31835 100644 (file)
--- a/liblttngctl/liblttngctl.c
+++ b/liblttngctl/liblttngctl.c
@@ -167,6 +167,21 @@ const char *lttng_get_readable_code(int code)
        return lttcomm_get_readable_code(code);
 }
 
+/*
+ *  lttng_ust_create_trace
+ *
+ *  Request a trace creation for pid.
+ */
+int lttng_ust_create_trace(pid_t pid)
+{
+       int ret;
+
+       lsm.pid = pid;
+       ret = ask_sessiond(UST_CREATE_TRACE, NULL);
+
+       return ret;
+}
+
 /*
  *  lttng_ust_list_apps
  *
@@ -194,23 +209,39 @@ int lttng_ust_list_apps(pid_t **pids)
  *  Create a brand new session using name. Allocate
  *  the session_id param pointing to the UUID.
  */
-int lttng_create_session(char *name, char **session_id)
+int lttng_create_session(char *name, uuid_t *session_id)
 {
        int ret;
-       char *uuid;
 
        strncpy(lsm.session_name, name, sizeof(lsm.session_name));
+       lsm.session_name[sizeof(lsm.session_name) - 1] = '\0';
 
        ret = ask_sessiond(LTTNG_CREATE_SESSION, NULL);
        if (ret < 0) {
                goto end;
        }
 
-       /* Allocate UUID string length */
-       uuid = malloc(UUID_STR_LEN);
+       uuid_copy(*session_id, llm.session_id);
+
+end:
+       return ret;
+}
+
+/*
+ *  lttng_destroy_session
+ *
+ *  Destroy session using name.
+ */
+int lttng_destroy_session(uuid_t *uuid)
+{
+       int ret;
+
+       uuid_copy(lsm.session_id, *uuid);
 
-       strncpy(uuid, llm.session_id, UUID_STR_LEN);
-       *session_id = uuid;
+       ret = ask_sessiond(LTTNG_DESTROY_SESSION, NULL);
+       if (ret < 0) {
+               goto end;
+       }
 
 end:
        return ret;
@@ -264,6 +295,34 @@ int lttng_connect_sessiond(void)
        return 0;
 }
 
+/*
+ *  lttng_disconnect_sessiond
+ *
+ *  Clean disconnect the session daemon.
+ */
+int lttng_disconnect_sessiond(void)
+{
+       int ret = 0;
+
+       if (connected) {
+               ret = lttcomm_close_unix_sock(sessiond_socket);
+               sessiond_socket = 0;
+               connected = 0;
+       }
+
+       return ret;
+}
+
+/*
+ *  lttng_set_current_session_uuid
+ *
+ *  Set the session uuid for current lsm.
+ */
+void lttng_set_current_session_uuid(char *uuid)
+{
+       uuid_parse(uuid, lsm.session_id);
+}
+
 /*
  *  lttng_set_tracing_group
  *