196 lines
7.5 KiB
C
196 lines
7.5 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <dlfcn.h>
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#include <link.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#include <android/dlext.h>
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// These functions are exported by the loader
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// TODO(dimitry): replace these with reference to libc.so
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__attribute__((__weak__, visibility("default")))
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void* __loader_dlopen(const char* filename, int flags, const void* caller_addr);
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__attribute__((__weak__, visibility("default")))
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void* __loader_dlerror();
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__attribute__((__weak__, visibility("default")))
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void* __loader_dlsym(void* handle, const char* symbol, const void* caller_addr);
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__attribute__((__weak__, visibility("default")))
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void* __loader_dlvsym(void* handle,
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const char* symbol,
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const char* version,
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const void* caller_addr);
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__attribute__((__weak__, visibility("default")))
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int __loader_dladdr(const void* addr, Dl_info* info);
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__attribute__((__weak__, visibility("default")))
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int __loader_dlclose(void* handle);
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#if defined(__arm__)
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__attribute__((__weak__, visibility("default")))
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_Unwind_Ptr __loader_dl_unwind_find_exidx(_Unwind_Ptr pc, int* pcount);
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#endif
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__attribute__((__weak__, visibility("default")))
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int __loader_dl_iterate_phdr(int (*cb)(struct dl_phdr_info* info, size_t size, void* data),
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void* data);
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__attribute__((__weak__, visibility("default")))
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void __loader_android_get_LD_LIBRARY_PATH(char* buffer, size_t buffer_size);
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__attribute__((__weak__, visibility("default")))
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void __loader_android_update_LD_LIBRARY_PATH(const char* ld_library_path);
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__attribute__((__weak__, visibility("default")))
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void* __loader_android_dlopen_ext(const char* filename,
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int flag,
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const android_dlextinfo* extinfo,
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const void* caller_addr);
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__attribute__((__weak__, visibility("default")))
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void __loader_android_set_application_target_sdk_version(uint32_t target);
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__attribute__((__weak__, visibility("default")))
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uint32_t __loader_android_get_application_target_sdk_version();
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__attribute__((__weak__, visibility("default")))
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bool __loader_android_init_anonymous_namespace(const char* shared_libs_sonames,
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const char* library_search_path);
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__attribute__((__weak__, visibility("default")))
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struct android_namespace_t* __loader_android_create_namespace(
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const char* name,
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const char* ld_library_path,
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const char* default_library_path,
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uint64_t type,
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const char* permitted_when_isolated_path,
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struct android_namespace_t* parent,
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const void* caller_addr);
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__attribute__((__weak__, visibility("default")))
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bool __loader_android_link_namespaces(
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struct android_namespace_t* namespace_from,
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struct android_namespace_t* namespace_to,
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const char* shared_libs_sonames);
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__attribute__((__weak__, visibility("default")))
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void __loader_android_dlwarning(void* obj, void (*f)(void*, const char*));
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__attribute__((__weak__, visibility("default")))
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struct android_namespace_t* __loader_android_get_exported_namespace(const char* name);
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// Proxy calls to bionic loader
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void* dlopen(const char* filename, int flag) {
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const void* caller_addr = __builtin_return_address(0);
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return __loader_dlopen(filename, flag, caller_addr);
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}
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char* dlerror() {
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return __loader_dlerror();
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}
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void* dlsym(void* handle, const char* symbol) {
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const void* caller_addr = __builtin_return_address(0);
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return __loader_dlsym(handle, symbol, caller_addr);
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}
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void* dlvsym(void* handle, const char* symbol, const char* version) {
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const void* caller_addr = __builtin_return_address(0);
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return __loader_dlvsym(handle, symbol, version, caller_addr);
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}
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int dladdr(const void* addr, Dl_info* info) {
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return __loader_dladdr(addr, info);
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}
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int dlclose(void* handle) {
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return __loader_dlclose(handle);
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}
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#if defined(__arm__)
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_Unwind_Ptr dl_unwind_find_exidx(_Unwind_Ptr pc, int* pcount) {
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return __loader_dl_unwind_find_exidx(pc, pcount);
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}
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#endif
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/*
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* This needs to be defined as weak because it is also defined in libc.a.
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* Without this, static executables will have a multiple definition error.
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*/
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__attribute__((__weak__))
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int dl_iterate_phdr(int (*cb)(struct dl_phdr_info* info, size_t size, void* data), void* data) {
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return __loader_dl_iterate_phdr(cb, data);
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}
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void android_get_LD_LIBRARY_PATH(char* buffer, size_t buffer_size) {
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__loader_android_get_LD_LIBRARY_PATH(buffer, buffer_size);
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}
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void android_update_LD_LIBRARY_PATH(const char* ld_library_path) {
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__loader_android_update_LD_LIBRARY_PATH(ld_library_path);
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}
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void* android_dlopen_ext(const char* filename, int flag, const android_dlextinfo* extinfo) {
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const void* caller_addr = __builtin_return_address(0);
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return __loader_android_dlopen_ext(filename, flag, extinfo, caller_addr);
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}
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void android_set_application_target_sdk_version(uint32_t target) {
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__loader_android_set_application_target_sdk_version(target);
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}
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uint32_t android_get_application_target_sdk_version() {
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return __loader_android_get_application_target_sdk_version();
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}
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bool android_init_anonymous_namespace(const char* shared_libs_sonames,
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const char* library_search_path) {
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return __loader_android_init_anonymous_namespace(shared_libs_sonames, library_search_path);
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}
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struct android_namespace_t* android_create_namespace(const char* name,
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const char* ld_library_path,
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const char* default_library_path,
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uint64_t type,
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const char* permitted_when_isolated_path,
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struct android_namespace_t* parent) {
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const void* caller_addr = __builtin_return_address(0);
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return __loader_android_create_namespace(name,
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ld_library_path,
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default_library_path,
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type,
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permitted_when_isolated_path,
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parent,
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caller_addr);
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}
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bool android_link_namespaces(struct android_namespace_t* namespace_from,
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struct android_namespace_t* namespace_to,
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const char* shared_libs_sonames) {
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return __loader_android_link_namespaces(namespace_from, namespace_to, shared_libs_sonames);
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}
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void android_dlwarning(void* obj, void (*f)(void*, const char*)) {
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__loader_android_dlwarning(obj, f);
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}
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struct android_namespace_t* android_get_exported_namespace(const char* name) {
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return __loader_android_get_exported_namespace(name);
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}
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