diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/dlfcn_test.cpp | 28 | ||||
| -rw-r--r-- | tests/libs/Android.mk | 8 |
2 files changed, 34 insertions, 2 deletions
diff --git a/tests/dlfcn_test.cpp b/tests/dlfcn_test.cpp index a5abda7..3c9b8e3 100644 --- a/tests/dlfcn_test.cpp +++ b/tests/dlfcn_test.cpp @@ -145,13 +145,28 @@ TEST(dlfcn, dlsym_from_sofile_with_preload) { dlclose(preload); } +TEST(dlfcn, dlsym_handle_global_sym) { + // check that we do not look into global group + // when looking up symbol by handle + void* handle = dlopen("libtest_empty.so", RTLD_NOW); + dlopen("libtest_with_dependency.so", RTLD_NOW | RTLD_GLOBAL); + void* sym = dlsym(handle, "getRandomNumber"); + ASSERT_TRUE(sym == nullptr); + ASSERT_SUBSTR("undefined symbol: getRandomNumber", dlerror()); + + sym = dlsym(handle, "DlSymTestFunction"); + ASSERT_TRUE(sym == nullptr); + ASSERT_SUBSTR("undefined symbol: DlSymTestFunction", dlerror()); + dlclose(handle); +} + TEST(dlfcn, dlsym_with_dependencies) { void* handle = dlopen("libtest_with_dependency.so", RTLD_NOW); - ASSERT_TRUE(handle != NULL); + ASSERT_TRUE(handle != nullptr); dlerror(); // This symbol is in DT_NEEDED library. void* sym = dlsym(handle, "getRandomNumber"); - ASSERT_TRUE(sym != NULL); + ASSERT_TRUE(sym != nullptr) << dlerror(); int (*fn)(void); fn = reinterpret_cast<int (*)(void)>(sym); EXPECT_EQ(4, fn()); @@ -583,6 +598,15 @@ TEST(dlfcn, dlopen_check_rtld_global) { // RTLD_GLOBAL implies RTLD_NODELETE, let's check that void* sym_after_dlclose = dlsym(RTLD_DEFAULT, "dlopen_testlib_simple_func"); ASSERT_EQ(sym, sym_after_dlclose); + + // Check if dlsym() for main program's handle searches RTLD_GLOBAL + // shared libraries after symbol was not found in the main executable + // and dependent libraries. + void* handle_for_main_executable = dlopen(nullptr, RTLD_NOW); + sym = dlsym(handle_for_main_executable, "dlopen_testlib_simple_func"); + ASSERT_TRUE(sym != nullptr) << dlerror(); + + dlclose(handle_for_main_executable); } // libtest_with_dependency_loop.so -> libtest_with_dependency_loop_a.so -> diff --git a/tests/libs/Android.mk b/tests/libs/Android.mk index 15fa55c..a5ef622 100644 --- a/tests/libs/Android.mk +++ b/tests/libs/Android.mk @@ -405,6 +405,14 @@ module := libtest_dlsym_from_this_grandchild include $(LOCAL_PATH)/Android.build.testlib.mk # ----------------------------------------------------------------------------- +# Empty library +# ----------------------------------------------------------------------------- +libtest_empty_src_files := empty.cpp + +module := libtest_empty +include $(LOCAL_PATH)/Android.build.testlib.mk + +# ----------------------------------------------------------------------------- # Library with weak undefined function # ----------------------------------------------------------------------------- libtest_dlopen_weak_undefined_func_src_files := \ |