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 26 void* dlopen(const char* filename __unused, int flag __unused) { return 0; } 27 28 const char* dlerror(void) { return 0; } 29 30 void* dlsym(void* handle __unused, const char* symbol __unused) { return 0; } 31 32 void* dlvsym(void* handle __unused, const char* symbol __unused, const char* version __unused) { 33 return 0; 34 } 35 36 int dladdr(const void* addr __unused, Dl_info* info __unused) { return 0; } 37 38 int 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 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 49 void android_get_LD_LIBRARY_PATH(char* buffer __unused, size_t buffer_size __unused) { } 50 void android_update_LD_LIBRARY_PATH(const char* ld_library_path __unused) { } 51 52 void* android_dlopen_ext(const char* filename __unused, int flag __unused, 53 const android_dlextinfo* extinfo __unused) { 54 return 0; 55 } 56 57 void android_set_application_target_sdk_version(uint32_t target __unused) { } 58 uint32_t android_get_application_target_sdk_version() { return 0; } 59 60 bool android_init_namespaces(const char* public_ns_sonames __unused, 61 const char* anon_ns_library_path __unused) { 62 return false; 63 } 64 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 73 void android_dlwarning(void* obj, void (*f)(void*, const char*)) { f(obj, 0); } 74
