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