1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "linker_dlwarning.h" 30 31 #include <strings.h> 32 33 #include <string> 34 35 static std::string current_msg; 36 37 void add_dlwarning(const char* sopath, const char* message, const char* value) { 38 if (!current_msg.empty()) { 39 current_msg += '\n'; 40 } 41 42 current_msg = current_msg + basename(sopath) + ": " + message; 43 44 if (value != nullptr) { 45 current_msg = current_msg + " \"" + value + "\""; 46 } 47 } 48 49 // Resets the current one (like dlerror but instead of 50 // being thread-local it is process-local). 51 void get_dlwarning(void* obj, void (*f)(void*, const char*)) { 52 if (current_msg.empty()) { 53 f(obj, nullptr); 54 } else { 55 std::string msg = current_msg; 56 current_msg.clear(); 57 f(obj, msg.c_str()); 58 } 59 } 60
