--- ../busybox-1.23.2.orig/coreutils/logname.c	2015-03-23 06:06:55.000000000 +0300
+++ ./coreutils/logname.c	2015-09-26 01:06:00.568414824 +0300
@@ -50,3 +50,14 @@
 
 	bb_perror_msg_and_die("getlogin");
 }
+
+int getlogin_r(char* name, size_t namesize)
+{
+	char *s = getlogin(); 
+	if (s) {
+	 	strncpy (name, s, namesize);
+		return 0;
+	} else {
+		return -1;
+	}
+}