1 /*
2  * Copyright (C) 2016 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 
17 #include <dlfcn.h>
18 #include <stdio.h>
19 #include <stdlib.h>
20 
21 static void* g_libc_fclose_ptr;
22 
__libc_fclose_lookup()23 static void __attribute__((constructor)) __libc_fclose_lookup() {
24   g_libc_fclose_ptr = dlsym(RTLD_NEXT, "fclose");
25 }
26 
27 // A libc function used for RTLD_NEXT.
28 // This function in not supposed to be called.
fclose(FILE *)29 extern "C" int __attribute__((weak)) fclose(FILE*) {
30   abort();
31 }
32 
get_libc_fclose_ptr()33 extern "C" void* get_libc_fclose_ptr() {
34   return g_libc_fclose_ptr;
35 }
36 
37 
38