--- util-linux-2.11n-old/login-utils/setpwnam.c Mon Jul 31 08:50:39 2000
+++ util-linux-2.11n/login-utils/setpwnam.c     Wed Jun 12 21:37:12 2002
@@ -98,7 +98,8 @@
     /* sanity check */
     for (x = 0; x < 3; x++) {
        if (x > 0) sleep(1);
-       fd = open(PTMPTMP_FILE, O_WRONLY|O_CREAT, 0644);
+        // Never share the temporary file.
+       fd = open(PTMPTMP_FILE, O_WRONLY|O_CREAT|O_EXCL, 0644);
        if (fd == -1) {
            umask(oldumask);
            return -1;