45f2d03ae5
Before this CL bionic did the following: * Finds the ICU .dat file with scandir() * Extracts the ICU version number from the file name. e.g. _63 * dlopen() libicuuc * dlsym() necessary symbols, e.g. <symbol name>_<icu version> Right now such ICU symbols are stored in libandroidicu.so and suffixed with "_android", so it is responsible for "redirecting" to functions with approriate version and we do not need to lookup the version on our own. libicuuc is still available for NDK (and apps), and libandroidicu is a subset of libicuuc and libicui18n. After this CL bionic will do the following: * dlopen() libandroiicu * dlsym() <symbol_name>_android (without specific version suffix) Bug: 122822987 Test: cts-tradefed run cts-dev -m CtsBionicTestCases Change-Id: Iabd9f35b9c3462739fd2b18e60dcdc3e202031ac
66 lines
2.4 KiB
C++
66 lines
2.4 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "private/icu.h"
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#include <dirent.h>
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#include <dlfcn.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <async_safe/log.h>
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static void* g_libicuuc_handle = nullptr;
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static bool __find_icu() {
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g_libicuuc_handle = dlopen("libandroidicu.so", RTLD_LOCAL);
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if (g_libicuuc_handle == nullptr) {
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async_safe_format_log(ANDROID_LOG_ERROR, "bionic-icu", "couldn't open libandroidicu.so: %s",
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dlerror());
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return false;
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}
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return true;
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}
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void* __find_icu_symbol(const char* symbol_name) {
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static bool found_icu = __find_icu();
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if (!found_icu) return nullptr;
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char versioned_symbol_name[strlen(symbol_name) + strlen("_android") + 1];
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snprintf(versioned_symbol_name, sizeof(versioned_symbol_name), "%s_android",
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symbol_name);
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void* symbol = dlsym(g_libicuuc_handle, versioned_symbol_name);
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if (symbol == nullptr) {
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async_safe_format_log(ANDROID_LOG_ERROR, "bionic-icu", "couldn't find %s",
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versioned_symbol_name);
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}
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return symbol;
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}
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