976402cca1
Relocate symbol against DF_1_GLOBAL shared libraries
loaded before this shared library. This includes
main executable, ld_preloads and other libraries
that have DF_1_GLOBAL flag set.
Bug: 2643900
Bug: 15432753
Bug: 18186310
(cherry picked from commit d225a5e652)
Change-Id: I4e889cdf2dfbf8230b0790053d311ee6b0d0ee2d
73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <gtest/gtest.h>
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#include <dlfcn.h>
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#include <libgen.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string>
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extern "C" int main_global_default_serial() {
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return 3370318;
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}
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extern "C" int main_global_protected_serial() {
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return 2716057;
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}
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// The following functions are defined in DT_NEEDED
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// libdl_preempt_test.so library.
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// This one calls main_global_default_serial
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extern "C" int main_global_default_get_serial();
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// This one calls main_global_protected_serial
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extern "C" int main_global_protected_get_serial();
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// This one calls lib_global_default_serial
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extern "C" int lib_global_default_get_serial();
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// This one calls lib_global_protected_serial
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extern "C" int lib_global_protected_get_serial();
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// This test verifies that the global default function
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// main_global_default_serial() is preempted by
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// the function defined above.
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TEST(dl, main_preempts_global_default) {
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ASSERT_EQ(3370318, main_global_default_get_serial());
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}
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// This one makes sure that the global protected
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// symbols do not get preempted
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TEST(dl, main_does_not_preempt_global_protected) {
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ASSERT_EQ(3370318, main_global_protected_get_serial());
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}
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// check same things for lib
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TEST(dl, lib_preempts_global_default) {
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ASSERT_EQ(3370318, lib_global_default_get_serial());
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}
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TEST(dl, lib_does_not_preempt_global_protected) {
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ASSERT_EQ(3370318, lib_global_protected_get_serial());
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}
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// TODO: Add tests for LD_PRELOADs
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