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#include <stdbool.h>
21#include <android/dlext.h>
22
23// These are stubs for functions that are actually defined
24// in the dynamic linker and hijacked at runtime.
25
26void* dlopen(const char* filename __unused, int flag __unused) { return 0; }
27
28const char* dlerror(void) { return 0; }
29
30void* dlsym(void* handle __unused, const char* symbol __unused) { return 0; }
31
32void* dlvsym(void* handle __unused, const char* symbol __unused, const char* version __unused) {
33  return 0;
34}
35
36int dladdr(const void* addr __unused, Dl_info* info __unused) { return 0; }
37
38int dlclose(void* handle __unused) { return 0; }
39
40#if defined(__arm__)
41_Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc __unused, int* pcount __unused) { return 0; }
42#endif
43
44int dl_iterate_phdr(int (*cb)(struct dl_phdr_info* info, size_t size, void* data) __unused,
45                    void* data __unused) {
46  return 0;
47}
48
49void android_get_LD_LIBRARY_PATH(char* buffer __unused, size_t buffer_size __unused) { }
50void android_update_LD_LIBRARY_PATH(const char* ld_library_path __unused) { }
51
52void* android_dlopen_ext(const char* filename __unused, int flag __unused,
53                         const android_dlextinfo* extinfo __unused) {
54  return 0;
55}
56
57void android_set_application_target_sdk_version(uint32_t target __unused) { }
58uint32_t android_get_application_target_sdk_version() { return 0; }
59
60bool android_init_namespaces(const char* public_ns_sonames __unused,
61                             const char* anon_ns_library_path __unused) {
62  return false;
63}
64
65struct android_namespace_t* android_create_namespace(const char* name __unused,
66                                                     const char* ld_library_path __unused,
67                                                     const char* default_library_path __unused,
68                                                     uint64_t type __unused,
69                                                     const char* permitted_when_isolated_path __unused) {
70  return 0;
71}
72
73void android_dlwarning(void* obj, void (*f)(void*, const char*)) { f(obj, 0); }
74