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/*
* Copyright (C) 2014 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 <stdlib.h>
#include <dlfcn.h>
#include <stdio.h>
extern const uint32_t private_taxicab_number;
extern "C" {
uint32_t dlsym_local_symbol_get_taxicab_number();
uint32_t dlsym_local_symbol_get_taxicab_number_using_dlsym();
}
uint32_t dlsym_local_symbol_get_taxicab_number() {
return private_taxicab_number;
}
// Let's make sure that dlsym works correctly for local symbol
uint32_t dlsym_local_symbol_get_taxicab_number_using_dlsym() {
dlerror();
uint32_t* ptr = reinterpret_cast<uint32_t*>(dlsym(RTLD_DEFAULT, "private_taxicab_number"));
if (ptr == nullptr) {
const char* dlerr = dlerror();
if (dlerr != nullptr) {
fprintf(stderr, "dlsym error: %s\n", dlerr);
} else {
fprintf(stderr, "dlsym returned NULL with no dlerror.\n");
}
return 0;
}
return *ptr;
}
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