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[utils,signal] unregister signal handler on termination

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akallabeth
2026-01-23 22:05:08 +01:00
parent 75ca7c181f
commit dde93d1aa2
1 changed files with 30 additions and 0 deletions
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30
libfreerdp/utils/signal.c
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@@ -195,6 +195,35 @@ static BOOL register_handlers(const int* signals, size_t count, void (*handler)(
return TRUE;
}
static void unregister_handlers(const int* signals, size_t count)
{
WINPR_ASSERT(signals || (count == 0));
sigset_t orig_set = { 0 };
struct sigaction saction = { 0 };
pthread_sigmask(SIG_BLOCK, &(saction.sa_mask), &orig_set);
sigfillset(&(saction.sa_mask));
sigdelset(&(saction.sa_mask), SIGCONT);
saction.sa_handler = SIG_IGN;
saction.sa_flags = 0;
for (size_t x = 0; x < count; x++)
{
sigaction(signals[x], &saction, NULL);
}
pthread_sigmask(SIG_SETMASK, &orig_set, NULL);
}
static void unregister_all_handlers(void)
{
unregister_handlers(fatal_signals, ARRAYSIZE(fatal_signals));
unregister_handlers(term_signals, ARRAYSIZE(term_signals));
}
int freerdp_handle_signals(void)
{
int rc = -1;
@@ -203,6 +232,7 @@ int freerdp_handle_signals(void)
WLog_DBG(TAG, "Registering signal hook...");
(void)atexit(unregister_all_handlers);
if (!register_handlers(fatal_signals, ARRAYSIZE(fatal_signals), fatal_handler))
goto fail;
if (!register_handlers(term_signals, ARRAYSIZE(term_signals), term_handler))