added _get_tzfilename

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10179 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/kernel/libroot/os/time.c

@@ -18,7 +18,9 @@ static struct real_time_data sRealTimeDefaults = {
 	0,
 	100000,
 	0,
-	0
+	false,
+	"",
+	true
 };
 static struct real_time_data *sRealTimeData;
 
@@ -87,3 +89,13 @@ set_alarm(bigtime_t when, uint32 flags)
 	// ToDo: set_alarm()
 	return B_ERROR;
 }
+
+
+void
+_get_tzfilename(char* filename, size_t length)
+{
+	if (filename == NULL)
+		return;
+
+	strlcpy(filename, sRealTimeData->tzfilename, length);
+}