From f3fd569c365ca5149fedbbc6c7a902aa1f8e5b60 Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Wed, 22 Aug 2012 00:43:21 +0000
Subject: rtld: limit self loading check to normal mode only

Commit glibc-2.14~10 disallowed rtld self loading to avoid a segfault
that used to happen when rtld was loading itself in normal mode.
Unfortunately, that commit disallowed all modes of self loading,
including those that used to work before.  This change limits the check
for self loading to normal mode only, so that instruments like ldd could
handle rtld properly.
---
 elf/tst-rtld-load-self.sh | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100755 elf/tst-rtld-load-self.sh

(limited to 'elf/tst-rtld-load-self.sh')

diff --git a/elf/tst-rtld-load-self.sh b/elf/tst-rtld-load-self.sh
new file mode 100755
index 0000000000..f4c5dea23a
--- /dev/null
+++ b/elf/tst-rtld-load-self.sh
@@ -0,0 +1,46 @@
+#! /bin/sh
+# Test how rtld loads itself.
+# Copyright (C) 2012 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+#
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+
+# You should have received a copy of the GNU Lesser General Public
+# License along with the GNU C Library; if not, see
+# <http://www.gnu.org/licenses/>.
+
+set -e
+
+rtld=$1
+result=0
+
+echo '# normal mode'
+$rtld $rtld 2>&1 && rc=0 || rc=$?
+echo "# exit status $rc"
+test $rc -le 127 || result=1
+
+echo '# list mode'
+$rtld --list $rtld 2>&1 && rc=0 || rc=$?
+echo "# exit status $rc"
+test $rc -eq 0 || result=1
+
+echo '# verify mode'
+$rtld --verify $rtld 2>&1 && rc=0 || rc=$?
+echo "# exit status $rc"
+test $rc -eq 2 || result=1
+
+echo '# trace mode'
+LD_TRACE_LOADED_OBJECTS=1 $rtld $rtld 2>&1 && rc=0 || rc=$?
+echo "# exit status $rc"
+test $rc -eq 0 || result=1
+
+exit $result
-- 
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