about summary refs log tree commit diff
path: root/elf/tst-nodelete-opened-lib.c
diff options
context:
space:
mode:
authorSiddhesh Poyarekar <siddhesh@redhat.com>2015-07-16 08:53:28 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2015-07-16 08:53:28 +0530
commitb632bdd3f7c0ba0c79f23f5e4404eebb87ebdaa8 (patch)
treeac6ac90ea020f5d02ee411528ce2d165ca4ecc11 /elf/tst-nodelete-opened-lib.c
parentc59f721c7377106888bff47064bf7da5a082e129 (diff)
downloadglibc-b632bdd3f7c0ba0c79f23f5e4404eebb87ebdaa8.tar.gz
glibc-b632bdd3f7c0ba0c79f23f5e4404eebb87ebdaa8.tar.xz
glibc-b632bdd3f7c0ba0c79f23f5e4404eebb87ebdaa8.zip
Set NODELETE flag when opening already open objects with RTLD_NODELETE
The DF_1_NODELETE flag is set too late when opening a DSO, due to
which, if a DSO is already open, subsequently opening it with
RTLD_NODELETE fails to set the DF_1_NODELETE flag.  This patch fixes
this by setting the flag immediately after bumping the opencount.

Verified on x86_64.

	[BZ #18676]
	* elf/tst-nodelete-opened.c: New test case.
	* elf/tst-nodelete-opened-lib.c: New test case module.
	* elf/Makefile (tests, modules-names): Use them.
	* elf/dl-open.c (dl_open_worker): Set DF_1_NODELETE flag
	early.
Diffstat (limited to 'elf/tst-nodelete-opened-lib.c')
-rw-r--r--elf/tst-nodelete-opened-lib.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/elf/tst-nodelete-opened-lib.c b/elf/tst-nodelete-opened-lib.c
new file mode 100644
index 0000000000..994702a9c5
--- /dev/null
+++ b/elf/tst-nodelete-opened-lib.c
@@ -0,0 +1,19 @@
+/* Verify that objects opened with RTLD_NODELETE are not unloaded - the DSO.
+   Copyright (C) 2015 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/>.  */
+
+int foo_var = 42;