From: Ulrich Drepper <drepper@redhat.com>
Date: Thu, 28 Feb 2002 20:12:50 +0000 (+0000)
Subject: (login): Always initialize ut_line field.
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9f950c64846a052cd9629d94a19194a53a8c5e94;p=thirdparty%2Fglibc.git

(login): Always initialize ut_line field.
---

diff --git a/login/login.c b/login/login.c
index a7a3ff5afa2..6efa7627f43 100644
--- a/login/login.c
+++ b/login/login.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+/* Copyright (C) 1996, 1997, 1998, 2002 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
 
@@ -17,6 +17,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <assert.h>
 #include <errno.h>
 #include <limits.h>
 #include <string.h>
@@ -133,6 +134,10 @@ login (const struct utmp *ut)
       if (tty != _tty)
 	free (tty);		/* Free buffer malloced by tty_name.  */
     }
+  else
+    /* We provide a default value so that the output does not contain
+       an random bytes in this field.  */
+    strncpy (copy.ut_line, "???", UT_LINESIZE);
 
   /* Update the WTMP file.  Here we have to add a new entry.  */
   updwtmp (_PATH_WTMP, &copy);