1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifdef HAVE_ANDROID_OS
18 #include <android/log.h>
19 #else
20 #include <stdarg.h>
21 #include <iostream>
22 #endif
23
24 #include <stdlib.h>
25 #include <stdio.h>
26
27 #include "sigchain.h"
28
log(const char * format,...)29 static void log(const char* format, ...) {
30 char buf[256];
31 va_list ap;
32 va_start(ap, format);
33 vsnprintf(buf, sizeof(buf), format, ap);
34 #ifdef HAVE_ANDROID_OS
35 __android_log_write(ANDROID_LOG_ERROR, "libsigchain", buf);
36 #else
37 std::cout << buf << "\n";
38 #endif
39 va_end(ap);
40 }
41
ClaimSignalChain(int signal,struct sigaction * oldaction)42 extern "C" void ClaimSignalChain(int signal, struct sigaction* oldaction) {
43 log("ClaimSignalChain is not exported by the main executable.");
44 abort();
45 }
46
EnsureFrontOfChain(int signal,struct sigaction * expected_action)47 extern "C" void EnsureFrontOfChain(int signal, struct sigaction* expected_action) {
48 log("EnsureFrontOfChain is not exported by the main executable.");
49 abort();
50 }
51
UnclaimSignalChain(int signal)52 extern "C" void UnclaimSignalChain(int signal) {
53 log("UnclaimSignalChain is not exported by the main executable.");
54 abort();
55 }
56
InvokeUserSignalHandler(int sig,siginfo_t * info,void * context)57 extern "C" void InvokeUserSignalHandler(int sig, siginfo_t* info, void* context) {
58 log("InvokeUserSignalHandler is not exported by the main executable.");
59 abort();
60 }
61
InitializeSignalChain()62 extern "C" void InitializeSignalChain() {
63 log("InitializeSignalChain is not exported by the main executable.");
64 abort();
65 }
66