platform_bionic/linker/linker_translate_path.cpp
Victor Khimenko 9b3e026c8f Refactor translateSystemPathToApexPath
This is more efficient and easier to read.

Test: bionic-unit-tests --gtest_filter=*icu*

Change-Id: Iddeed7cd4a1d48d8968f97951a9af004ccce52e8
2020-05-19 02:32:07 +02:00

73 lines
2.7 KiB
C++

/*
* Copyright (C) 2020 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "linker.h"
#include "linker_translate_path.h"
#include "linker_utils.h"
#if defined(__LP64__)
#define APEX_LIB(apex, name) \
{ "/system/lib64/" name, "/apex/" apex "/lib64/" name }
#else
#define APEX_LIB(apex, name) \
{ "/system/lib/" name, "/apex/" apex "/lib/" name }
#endif
// Workaround for dlopen(/system/lib(64)/<soname>) when .so is in /apex. http://b/121248172
/**
* Translate /system path to /apex path if needed
* The workaround should work only when targetSdkVersion < Q.
*
* param out_name_to_apex pointing to /apex path
* return true if translation is needed
*/
bool translateSystemPathToApexPath(const char* name, std::string* out_name_to_apex) {
static constexpr const char* kPathTranslationQ[][2] = {
APEX_LIB("com.android.i18n", "libicui18n.so"),
APEX_LIB("com.android.i18n", "libicuuc.so")
};
if (name == nullptr) {
return false;
}
auto comparator = [name](auto p) { return strcmp(name, p[0]) == 0; };
if (get_application_target_sdk_version() < __ANDROID_API_Q__) {
if (auto it =
std::find_if(std::begin(kPathTranslationQ), std::end(kPathTranslationQ), comparator);
it != std::end(kPathTranslationQ)) {
*out_name_to_apex = (*it)[1];
return true;
}
}
return false;
}
// End Workaround for dlopen(/system/lib/<soname>) when .so is in /apex.