85 lines
1.6 KiB
C++
85 lines
1.6 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "SignalHandlers.hxx"
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#include "Instance.hxx"
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#include "event/SignalMonitor.hxx"
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#ifndef _WIN32
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#include "Log.hxx"
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#include "LogInit.hxx"
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#include "system/Error.hxx"
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#include "util/Domain.hxx"
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#include <csignal>
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#ifdef __linux__
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#include <sys/prctl.h>
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#endif
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static constexpr Domain signal_handlers_domain("signal_handlers");
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static void
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HandleShutdownSignal(void *ctx) noexcept
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{
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auto &loop = *(EventLoop *)ctx;
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loop.Break();
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}
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static void
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x_sigaction(int signum, const struct sigaction *act)
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{
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if (sigaction(signum, act, nullptr) < 0)
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throw MakeErrno("sigaction() failed");
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}
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static void
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handle_reload_event(void *ctx) noexcept
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{
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auto &instance = *(Instance *)ctx;
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LogDebug(signal_handlers_domain, "got SIGHUP, reopening log files and flushing caches");
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cycle_log_files();
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instance.FlushCaches();
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}
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#endif
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void
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SignalHandlersInit(Instance &instance, bool daemon)
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{
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auto &loop = instance.event_loop;
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SignalMonitorInit(loop);
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#ifndef _WIN32
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struct sigaction sa;
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sa.sa_flags = 0;
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sigemptyset(&sa.sa_mask);
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sa.sa_handler = SIG_IGN;
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x_sigaction(SIGPIPE, &sa);
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SignalMonitorRegister(SIGINT, {&loop, HandleShutdownSignal});
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SignalMonitorRegister(SIGTERM, {&loop, HandleShutdownSignal});
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SignalMonitorRegister(SIGHUP, {&instance, handle_reload_event});
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#endif
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if (!daemon) {
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#ifdef __linux__
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/* if MPD was not daemonized, shut it down when the
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parent process dies */
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prctl(PR_SET_PDEATHSIG, SIGTERM);
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#endif
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}
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}
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void
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SignalHandlersFinish() noexcept
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{
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SignalMonitorFinish();
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}
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