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/*
* 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;
}
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