1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #include <gtest/gtest.h>
17
18 #include <android-base/strings.h>
19 #include <dirent.h>
20 #include <dlfcn.h>
21 #include <vndksupport/linker.h>
22 #include <string>
23
24 // Since the test executable will be in /data and ld.config.txt does not
25 // configure sphal namespace for executables in /data, the call to
26 // android_load_sphal_library will always fallback to the plain dlopen from the
27 // default namespace.
28
29 // Let's use libEGL_<chipset>.so as a SP-HAL in test
find_sphal_lib()30 static std::string find_sphal_lib() {
31 const char* path =
32 #if defined(__LP64__)
33 "/vendor/lib64/egl";
34 #else
35 "/vendor/lib/egl";
36 #endif
37 std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(path), closedir);
38
39 dirent* dp;
40 while ((dp = readdir(dir.get())) != nullptr) {
41 std::string name = dp->d_name;
42 if (android::base::StartsWith(name, "libEGL_")) {
43 return std::string(path) + "/" + name;
44 }
45 }
46 return "";
47 }
48
TEST(linker,load_existing_lib)49 TEST(linker, load_existing_lib) {
50 std::string name = find_sphal_lib();
51 ASSERT_NE("", name);
52 void* handle = android_load_sphal_library(name.c_str(), RTLD_NOW | RTLD_LOCAL);
53 ASSERT_NE(nullptr, handle);
54 android_unload_sphal_library(handle);
55 }
56
TEST(linker,load_nonexisting_lib)57 TEST(linker, load_nonexisting_lib) {
58 void* handle = android_load_sphal_library("libNeverUseThisName.so", RTLD_NOW | RTLD_LOCAL);
59 ASSERT_EQ(nullptr, handle);
60 }
61