libdl.c revision 7ac975146ea7bc1ee7499bafc4e0b57b7ee56c98 
1/*
2 * Copyright (C) 2007 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 <link.h>
19#include <stdlib.h>
20
21// These are stubs for functions that are actually defined
22// in the dynamic linker and hijacked at runtime.
23
24void* dlopen(const char* filename __unused, int flag __unused) { return 0; }
25const char* dlerror(void) { return 0; }
26void* dlsym(void* handle __unused, const char* symbol __unused) { return 0; }
27int dladdr(const void* addr __unused, Dl_info* info __unused) { return 0; }
28int dlclose(void* handle __unused) { return 0; }
29
30void android_get_LD_LIBRARY_PATH(char* buffer __unused, size_t buffer_size __unused) { }
31void android_update_LD_LIBRARY_PATH(const char* ld_library_path __unused) { }
32
33#if defined(__arm__)
34_Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc __unused, int* pcount __unused) { return 0; }
35#endif
36
37int dl_iterate_phdr(int (*cb)(struct dl_phdr_info* info, size_t size, void* data) __unused, void* data __unused) { return 0; }
38