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When a signal handler is set, ensure that the signal is not blocked.

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[INTERPRETER]
* BUG: When a signal handler is set, ensure that the signal is not blocked.
This commit is contained in:
Benoît Minisini 2023-04-12 20:55:05 +02:00
parent b36c09ae49
commit fcc386d0f6
1 changed files with 7 additions and 0 deletions
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7
main/gbx/gbx_signal.c
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@ -67,6 +67,7 @@ static int get_callback(struct sigaction *action, void (**callback)())
void SIGNAL_install(SIGNAL_HANDLER *handler, int signum, void (*callback)(int, siginfo_t *, void *))
{
struct sigaction action;
sigset_t sig;
#if DEBUG_ME
fprintf(stderr, "SIGNAL_install: %d %p\n", signum, callback);
@ -81,6 +82,12 @@ void SIGNAL_install(SIGNAL_HANDLER *handler, int signum, void (*callback)(int, s
if (sigaction(signum, NULL, &handler->old_action) != 0 || sigaction(signum, &action, NULL) != 0)
ERROR_panic("Cannot install signal handler: %s", strerror(errno));
// Ensure that the signal is not blocked
sigemptyset(&sig);
sigaddset(&sig, signum);
sigprocmask(SIG_UNBLOCK, &sig, NULL);
}
void SIGNAL_uninstall(SIGNAL_HANDLER *handler, int signum)