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unix/SignalHandlers: shut down if parent process dies in --no-daemon mode

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By default, if the parent of a process dies, the process gets SIGHUP
and is supposed to shut down.  This however doesn't work for MPD,
because MPD redefines SIGHUP with a different meaning (like most
daemons do).

To work around this, we configure the kernel to send SIGTERM instead
of SIGHUP.

Closes https://github.com/MusicPlayerDaemon/MPD/issues/1706
This commit is contained in:
Max Kellermann
2023-03-06 12:53:19 +01:00
parent 6e700dab69
commit a0f6932ebe
4 changed files with 22 additions and 5 deletions
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6
src/unix/SignalHandlers.hxx
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@@ -23,15 +23,15 @@
struct Instance;
void
SignalHandlersInit(Instance &instance);
SignalHandlersInit(Instance &instance, bool daemon);
void
SignalHandlersFinish() noexcept;
class ScopeSignalHandlersInit {
public:
ScopeSignalHandlersInit(Instance &instance) {
SignalHandlersInit(instance);
ScopeSignalHandlersInit(Instance &instance, bool daemon) {
SignalHandlersInit(instance, daemon);
}
~ScopeSignalHandlersInit() noexcept {