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Configure SIGUSR1 with sigaction() instead of signal()

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If signal() is used to set a signal handler, only the first signal
received will use the handler; any later signals use the default
behavior (making swaylock terminate immediately, without unlocking).
Using sigaction() ensures that the handler will be used every time.
This commit is contained in:
Manuel Stoeckl 2023-10-07 13:01:22 -04:00 committed by Kenny Levinsen
parent f692ee0075
commit 0569a47ef7
1 changed files with 6 additions and 1 deletions
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7
main.c
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@ -1269,7 +1269,12 @@ int main(int argc, char **argv) {
loop_add_fd(state.eventloop, get_comm_reply_fd(), POLLIN, comm_in, NULL);
loop_add_fd(state.eventloop, sigusr_fds[0], POLLIN, term_in, NULL);
signal(SIGUSR1, do_sigusr);
struct sigaction sa;
sa.sa_handler = do_sigusr;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
sigaction(SIGUSR1, &sa, NULL);
state.run_display = true;
while (state.run_display) {