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rabbitmq_prelaunch: Ignore SIGINFO and SIGWINCH (backport #14646) #14647

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Merged
merged 1 commit into from
Sep 30, 2025
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rabbitmq_prelaunch: Ignore SIGINFO and SIGWINCH (backport #14646) #14647

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22 changes: 15 additions & 7 deletions deps/rabbitmq_prelaunch/src/rabbit_prelaunch_sighandler.erl
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,15 @@
%% we can't handle SIGCONT, the signal used to resume the
%% program. Unfortunately, it makes a SIGTSTP handler less
%% useful here.
sigtstp => ignore
sigtstp => ignore,

%% SIGINFO is triggered on *BSD systems by Ctrl+T to query the status
%% of the program. Things like the progress of a task.
siginfo => ignore,

%% SIGWINCH is triggered when the terminal window size changes to
%% allow the prograp to redraw its output.
sigwinch => ignore
}).

-define(SIGNAL_HANDLED_BY_ERLANG(Signal),
Expand All @@ -55,13 +63,13 @@ setup() ->
end.

init(_Args) ->
maps:fold(
maps:foreach(
fun
(Signal, _, Ret) when ?SIGNAL_HANDLED_BY_ERLANG(Signal) -> Ret;
(Signal, default, ok) -> os:set_signal(Signal, default);
(Signal, ignore, ok) -> os:set_signal(Signal, ignore);
(Signal, _, ok) -> os:set_signal(Signal, handle)
end, ok, ?SIGNALS_HANDLED_BY_US),
(Signal, _) when ?SIGNAL_HANDLED_BY_ERLANG(Signal) -> ok;
(Signal, default) -> catch os:set_signal(Signal, default);
(Signal, ignore) -> catch os:set_signal(Signal, ignore);
(Signal, _) -> catch os:set_signal(Signal, handle)
end, ?SIGNALS_HANDLED_BY_US),
{ok, #{}}.

handle_event(Signal, State) when ?SIGNAL_HANDLED_BY_ERLANG(Signal) ->
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