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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <dlfcn.h>
#include <errno.h>
#include <stdio.h>
#if __has_include(<sys/auxv.h>)
#include <sys/auxv.h>
#endif
#include <unistd.h>
extern int get_value_from_lib();
int main() {
bool skip_vdso_check = false;
#if __has_include(<sys/auxv.h>)
if (getauxval(AT_SYSINFO_EHDR) == 0) {
skip_vdso_check = true;
}
#endif
if (!skip_vdso_check) {
const char* vdso_name = "linux-vdso.so.1";
#if defined(__i386__)
vdso_name = "linux-gate.so.1";
#endif
void* handle = dlopen(vdso_name, RTLD_NOW);
if (handle == nullptr) {
printf("%s", dlerror());
return 1;
}
dlclose(handle);
}
printf("%d", get_value_from_lib());
return 0;
}
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