// ensures that LD_CONFIG_FILE env var does not work for production builds.
// The test input is the same as exec_with_ld_config_file, but it must fail in
// this case.
TEST(dl, disable_ld_config_file) {
#if defined(__BIONIC__)
if (getuid() == 0) {
// when executed from the shell (e.g. not as part of CTS), skip the test.
// This test is only for CTS.
return;
}
if (is_debuggable_build()) {
// Skip the test for non production devices
return;
}
std::string error_message = "CANNOT LINK EXECUTABLE \"" + get_testlib_root() + "/ld_config_test_helper/ld_config_test_helper\": library \"ld_config_test_helper_lib1.so\" not found\n";
std::string helper = get_testlib_root() +
"/ld_config_test_helper/ld_config_test_helper";
TemporaryFile config_file;
create_ld_config_file(config_file.filename);
std::string env = std::string("LD_CONFIG_FILE=") + config_file.filename;
chmod(helper.c_str(), 0755);
ExecTestHelper eth;
eth.SetArgs({ helper.c_str(), nullptr });
eth.SetEnv({ env.c_str(), nullptr });
eth.Run([&]() { execve(helper.c_str(), eth.GetArgs(), eth.GetEnv()); }, EXIT_FAILURE, error_message.c_str());
#endif
}
TEST(dl, preinit_system_calls) {
#if defined(__BIONIC__)
std::string helper = get_testlib_root() +
"/preinit_syscall_test_helper/preinit_syscall_test_helper";
chmod(helper.c_str(), 0755); // TODO: "x" lost in CTS, b/34945607
ExecTestHelper eth;
eth.SetArgs({ helper.c_str(), nullptr });
eth.Run([&]() { execve(helper.c_str(), eth.GetArgs(), eth.GetEnv()); }, 0, nullptr);
#endif
}
TEST(dl, exec_without_ld_preload) {
#if defined(__BIONIC__)
std::string helper = get_testlib_root() +
"/ld_preload_test_helper/ld_preload_test_helper";
chmod(helper.c_str(), 0755);
ExecTestHelper eth;
eth.SetArgs({ helper.c_str(), nullptr });
eth.Run([&]() { execve(helper.c_str(), eth.GetArgs(), eth.GetEnv()); }, 0, "12345");
#endif
}
// ld_config_test_helper must fail because it is depending on a lib which is not
// in the search path
//
// Call sequence is...
// _helper -- (get_value_from_lib()) -->
// _lib1.so -- (get_value_from_another_lib()) -->
// _lib2.so (returns 12345)
// The two libs are in ns2/ subdir.
TEST(dl, exec_without_ld_config_file) {
#if defined(__BIONIC__)
std::string error_message = "CANNOT LINK EXECUTABLE \"" + get_testlib_root() + "/ld_config_test_helper/ld_config_test_helper\": library \"ld_config_test_helper_lib1.so\" not found\n";
std::string helper = get_testlib_root() +
"/ld_config_test_helper/ld_config_test_helper";
chmod(helper.c_str(), 0755);
ExecTestHelper eth;
eth.SetArgs({ helper.c_str(), nullptr });
eth.Run([&]() { execve(helper.c_str(), eth.GetArgs(), eth.GetEnv()); }, EXIT_FAILURE, error_message.c_str());
#endif
}
TEST(dl, exec_linker) {
#if defined(__BIONIC__)
#if defined(__LP64__)
static constexpr const char* kPathToLinker = "/system/bin/linker64";
#else
static constexpr const char* kPathToLinker = "/system/bin/linker";
#endif
ExecTestHelper eth;
std::string expected_output = std::string("This is ") + kPathToLinker +
", the helper program for dynamic executables.\n";
eth.SetArgs( { kPathToLinker, nullptr });
eth.Run([&]() { execve(kPathToLinker, eth.GetArgs(), eth.GetEnv()); }, 0, expected_output.c_str());
#endif
}
TEST(dl, exec_with_ld_preload) {
#if defined(__BIONIC__)
std::string helper = get_testlib_root() +
"/ld_preload_test_helper/ld_preload_test_helper";
std::string env = std::string("LD_PRELOAD=") + get_testlib_root() + "/ld_preload_test_helper_lib2.so";
chmod(helper.c_str(), 0755);
ExecTestHelper eth;
eth.SetArgs({ helper.c_str(), nullptr });
eth.SetEnv({ env.c_str(), nullptr });
// ld_preload_test_helper calls get_value_from_lib() and returns the value.
// The symbol is defined by two libs: ld_preload_test_helper_lib.so and
// ld_preloaded_lib.so. The former is DT_NEEDED and the latter is LD_PRELOADED
// via this execution. The main executable is linked to the LD_PRELOADED lib
// and the value given from the lib is returned.
eth.Run([&]() { execve(helper.c_str(), eth.GetArgs(), eth.GetEnv()); }, 0, "54321");
#endif
}
// _lib1.so and _lib2.so are now searchable by having another namespace 'ns2'
// whose search paths include the 'ns2/' subdir.
TEST(dl, exec_with_ld_config_file) {
#if defined(__BIONIC__)
if (!is_debuggable_build()) {
// LD_CONFIG_FILE is not supported on user build
return;
}
std::string helper = get_testlib_root() +
"/ld_config_test_helper/ld_config_test_helper";
TemporaryFile config_file;
create_ld_config_file(config_file.filename);
std::string env = std::string("LD_CONFIG_FILE=") + config_file.filename;
chmod(helper.c_str(), 0755);
ExecTestHelper eth;
eth.SetArgs({ helper.c_str(), nullptr });
eth.SetEnv({ env.c_str(), nullptr });
eth.Run([&]() { execve(helper.c_str(), eth.GetArgs(), eth.GetEnv()); }, 0, "12345");
#endif
}
