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
add_dlwarning(const char * sopath,const char * message,const char * value)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).
get_dlwarning(void * obj,void (* f)(void *,const char *))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