| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <android/dlext.h> |
| #include <dlfcn.h> |
| #include <stdlib.h> |
| |
| #include <string> |
| |
| #include "../core_shared_libs.h" |
| #include "../dlext_private.h" |
| |
| extern "C" void global_function(); |
| extern "C" void internal_function(); |
| |
| int main(int argc, char* argv[]) { |
| if (argc != 2) { |
| fprintf(stderr, "usage: %s NS_PATH\n", argv[0]); |
| fprintf(stderr, "NS_PATH path to the ns_hidden_child_app directory\n"); |
| exit(1); |
| } |
| |
| // Ensure that -Wl,--needed doesn't break the test by removing DT_NEEDED entries. |
| global_function(); |
| internal_function(); |
| |
| const char* app_lib_dir = argv[1]; |
| android_namespace_t* app_ns = |
| android_create_namespace("app", nullptr, app_lib_dir, ANDROID_NAMESPACE_TYPE_ISOLATED, |
| nullptr, nullptr); |
| if (app_ns == nullptr) { |
| fprintf(stderr, "android_create_namespace failed: %s\n", dlerror()); |
| exit(1); |
| } |
| |
| std::string public_libs = std::string(kCoreSharedLibs) + ":libns_hidden_child_public.so"; |
| if (!android_link_namespaces(app_ns, nullptr, public_libs.c_str())) { |
| fprintf(stderr, "android_link_namespaces failed: %s\n", dlerror()); |
| exit(1); |
| } |
| |
| android_dlextinfo ext = { |
| .flags = ANDROID_DLEXT_USE_NAMESPACE, |
| .library_namespace = app_ns, |
| }; |
| void* app_lib = android_dlopen_ext("libns_hidden_child_app.so", RTLD_NOW | RTLD_LOCAL, &ext); |
| if (app_lib == nullptr) { |
| fprintf(stderr, "android_dlopen_ext failed: %s\n", dlerror()); |
| exit(1); |
| } |
| |
| auto app_function = reinterpret_cast<void(*)()>(dlsym(app_lib, "app_function")); |
| if (app_function == nullptr) { |
| fprintf(stderr, "dlsym failed to find app_function: %s\n", dlerror()); |
| exit(1); |
| } |
| |
| app_function(); |
| return 0; |
| } |