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/*
* Copyright (C) 2024 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 "common/libs/utils/signals.h"
#include <errno.h>
#include <signal.h>
#include <string.h>
#include <vector>
#include <android-base/logging.h>
namespace cuttlefish {
SignalMasker::SignalMasker(sigset_t signals) {
auto res = sigprocmask(SIG_SETMASK, &signals, &old_mask_);
auto err = errno;
CHECK(res == 0) << "Failed to set thread's blocked signal mask: "
<< strerror(err);
}
SignalMasker::~SignalMasker() {
auto res = sigprocmask(SIG_SETMASK, &old_mask_, NULL);
auto err = errno;
CHECK(res == 0) << "Failed to reset thread's blocked signal mask: "
<< strerror(err);
}
void ChangeSignalHandlers(void (*handler)(int), std::vector<int> signals) {
struct sigaction act;
act.sa_handler = handler;
sigemptyset(&act.sa_mask);
for (auto signal: signals) {
sigaddset(&act.sa_mask, signal);
}
act.sa_flags = 0;
for (auto signal : signals) {
sigaction(signal, &act, NULL);
}
}
} // namespace cuttlefish
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