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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_ANDROID_OS
#include <android/log.h>
#else
#include <stdarg.h>
#include <iostream>
#endif
#include "sigchain.h"
#define ATTRIBUTE_UNUSED __attribute__((__unused__))
// We cannot annotate the declarations, as they are not no-return in the non-dummy version.
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunknown-pragmas"
#pragma GCC diagnostic ignored "-Wmissing-noreturn"
static void log(const char* format, ...) {
char buf[256];
va_list ap;
va_start(ap, format);
vsnprintf(buf, sizeof(buf), format, ap);
#ifdef HAVE_ANDROID_OS
__android_log_write(ANDROID_LOG_ERROR, "libsigchain", buf);
#else
std::cout << buf << "\n";
#endif
va_end(ap);
}
namespace art {
extern "C" void ClaimSignalChain(int signal ATTRIBUTE_UNUSED,
struct sigaction* oldaction ATTRIBUTE_UNUSED) {
log("ClaimSignalChain is not exported by the main executable.");
abort();
}
extern "C" void UnclaimSignalChain(int signal ATTRIBUTE_UNUSED) {
log("UnclaimSignalChain is not exported by the main executable.");
abort();
}
extern "C" void InvokeUserSignalHandler(int sig ATTRIBUTE_UNUSED,
siginfo_t* info ATTRIBUTE_UNUSED,
void* context ATTRIBUTE_UNUSED) {
log("InvokeUserSignalHandler is not exported by the main executable.");
abort();
}
extern "C" void InitializeSignalChain() {
log("InitializeSignalChain is not exported by the main executable.");
abort();
}
extern "C" void EnsureFrontOfChain(int signal ATTRIBUTE_UNUSED,
struct sigaction* expected_action ATTRIBUTE_UNUSED) {
log("EnsureFrontOfChain is not exported by the main executable.");
abort();
}
extern "C" void SetSpecialSignalHandlerFn(int signal ATTRIBUTE_UNUSED,
SpecialSignalHandlerFn fn ATTRIBUTE_UNUSED) {
log("SetSpecialSignalHandlerFn is not exported by the main executable.");
abort();
}
#pragma GCC diagnostic pop
} // namespace art
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