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
dlopen(const char * filename __unused,int flag __unused)26 void* dlopen(const char* filename __unused, int flag __unused) { return 0; }
27
dlerror(void)28 const char* dlerror(void) { return 0; }
29
dlsym(void * handle __unused,const char * symbol __unused)30 void* dlsym(void* handle __unused, const char* symbol __unused) { return 0; }
31
dlvsym(void * handle __unused,const char * symbol __unused,const char * version __unused)32 void* dlvsym(void* handle __unused, const char* symbol __unused, const char* version __unused) {
33 return 0;
34 }
35
dladdr(const void * addr __unused,Dl_info * info __unused)36 int dladdr(const void* addr __unused, Dl_info* info __unused) { return 0; }
37
dlclose(void * handle __unused)38 int dlclose(void* handle __unused) { return 0; }
39
40 #if defined(__arm__)
dl_unwind_find_exidx(_Unwind_Ptr pc __unused,int * pcount __unused)41 _Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc __unused, int* pcount __unused) { return 0; }
42 #endif
43
dl_iterate_phdr(int (* cb)(struct dl_phdr_info * info,size_t size,void * data)__unused,void * data __unused)44 int 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
android_get_LD_LIBRARY_PATH(char * buffer __unused,size_t buffer_size __unused)49 void android_get_LD_LIBRARY_PATH(char* buffer __unused, size_t buffer_size __unused) { }
android_update_LD_LIBRARY_PATH(const char * ld_library_path __unused)50 void android_update_LD_LIBRARY_PATH(const char* ld_library_path __unused) { }
51
android_dlopen_ext(const char * filename __unused,int flag __unused,const android_dlextinfo * extinfo __unused)52 void* android_dlopen_ext(const char* filename __unused, int flag __unused,
53 const android_dlextinfo* extinfo __unused) {
54 return 0;
55 }
56
android_set_application_target_sdk_version(uint32_t target __unused)57 void android_set_application_target_sdk_version(uint32_t target __unused) { }
android_get_application_target_sdk_version()58 uint32_t android_get_application_target_sdk_version() { return 0; }
59
android_init_namespaces(const char * public_ns_sonames __unused,const char * anon_ns_library_path __unused)60 bool android_init_namespaces(const char* public_ns_sonames __unused,
61 const char* anon_ns_library_path __unused) {
62 return false;
63 }
64
android_create_namespace(const char * name __unused,const char * ld_library_path __unused,const char * default_library_path __unused,uint64_t type __unused,const char * permitted_when_isolated_path __unused)65 struct 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
android_dlwarning(void * obj,void (* f)(void *,const char *))73 void android_dlwarning(void* obj, void (*f)(void*, const char*)) { f(obj, 0); }
74