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Ignore handling SIG_DFL/SIG_IGN for previous sig action (#2589)

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Wenyong Huang 2023-09-26 19:59:48 +08:00 committed by GitHub
parent ade73f6142
commit a50a438461
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1 changed files with 6 additions and 8 deletions
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14
core/shared/platform/common/posix/posix_thread.c
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@ -543,14 +543,12 @@ signal_callback(int sig_num, siginfo_t *sig_info, void *sig_ucontext)
if (prev_sig_act && (prev_sig_act->sa_flags & SA_SIGINFO)) {
prev_sig_act->sa_sigaction(sig_num, sig_info, sig_ucontext);
}
else if (prev_sig_act && (void *)prev_sig_act->sa_handler == SIG_DFL) {
/* Default action */
sigaction(sig_num, prev_sig_act, NULL);
}
else if (prev_sig_act && (void *)prev_sig_act->sa_handler == SIG_IGN) {
/* Ignore this signal */
}
else if (prev_sig_act && prev_sig_act->sa_handler) {
else if (prev_sig_act
&& prev_sig_act->sa_handler
/* Filter out SIG_DFL and SIG_IGN here, they will
run into the else branch below */
&& (void *)prev_sig_act->sa_handler != SIG_DFL
&& (void *)prev_sig_act->sa_handler != SIG_IGN) {
prev_sig_act->sa_handler(sig_num);
}
/* Output signal info and then crash if signal is unhandled */