void nsProfileLock::FatalSignalHandler(int signo
#ifdef SA_SIGINFO
, siginfo_t *info, void *context
#endif
)
{
// Remove any locks still held.
RemovePidLockFiles(true);
// Chain to the old handler, which may exit.
struct sigaction *oldact = nullptr;
switch (signo) {
case SIGHUP:
oldact = &SIGHUP_oldact;
break;
case SIGINT:
oldact = &SIGINT_oldact;
break;
case SIGQUIT:
oldact = &SIGQUIT_oldact;
break;
case SIGILL:
oldact = &SIGILL_oldact;
break;
case SIGABRT:
oldact = &SIGABRT_oldact;
break;
case SIGSEGV:
oldact = &SIGSEGV_oldact;
break;
case SIGTERM:
oldact = &SIGTERM_oldact;
break;
default:
NS_NOTREACHED("bad signo");
break;
}
if (oldact) {
if (oldact->sa_handler == SIG_DFL) {
// Make sure the default sig handler is executed
// We need it to get Mozilla to dump core.
sigaction(signo,oldact, nullptr);
// Now that we've restored the default handler, unmask the
// signal and invoke it.
sigset_t unblock_sigs;
sigemptyset(&unblock_sigs);
sigaddset(&unblock_sigs, signo);
sigprocmask(SIG_UNBLOCK, &unblock_sigs, nullptr);
raise(signo);
}
#ifdef SA_SIGINFO
else if (oldact->sa_sigaction &&
(oldact->sa_flags & SA_SIGINFO) == SA_SIGINFO) {
oldact->sa_sigaction(signo, info, context);
}
#endif
else if (oldact->sa_handler && oldact->sa_handler != SIG_IGN)
{
oldact->sa_handler(signo);
}
}
// Backstop exit call, just in case.
_exit(signo);
}
void nsProfileLock::FatalSignalHandler(int signo
#ifdef SA_SIGINFO
, siginfo_t *info, void *context
#endif
)
{
// Remove any locks still held.
RemovePidLockFiles(true);
// Chain to the old handler, which may exit.
struct sigaction *oldact = nullptr;
switch (signo) {
case SIGHUP:
oldact = &SIGHUP_oldact;
break;
case SIGINT:
oldact = &SIGINT_oldact;
break;
case SIGQUIT:
oldact = &SIGQUIT_oldact;
break;
case SIGILL:
oldact = &SIGILL_oldact;
break;
case SIGABRT:
oldact = &SIGABRT_oldact;
break;
case SIGSEGV:
oldact = &SIGSEGV_oldact;
break;
case SIGTERM:
oldact = &SIGTERM_oldact;
break;
default:
NS_NOTREACHED("bad signo");
break;
}
if (oldact) {
if (oldact->sa_handler == SIG_DFL) {
// Make sure the default sig handler is executed
// We need it to get Mozilla to dump core.
sigaction(signo,oldact, nullptr);
// Now that we've restored the default handler, unmask the
// signal and invoke it.
sigset_t unblock_sigs;
sigemptyset(&unblock_sigs);
sigaddset(&unblock_sigs, signo);
sigprocmask(SIG_UNBLOCK, &unblock_sigs, nullptr);
raise(signo);
}
#ifdef SA_SIGINFO
else if (oldact->sa_sigaction &&
(oldact->sa_flags & SA_SIGINFO) == SA_SIGINFO) {
oldact->sa_sigaction(signo, info, context);
}
#endif
else if (oldact->sa_handler && oldact->sa_handler != SIG_IGN)
{
oldact->sa_handler(signo);
}
}
#ifdef MOZ_WIDGET_GONK
switch (signo) {
case SIGQUIT:
case SIGILL:
case SIGABRT:
case SIGSEGV:
#ifndef MOZ_CRASHREPORTER
// Retrigger the signal for those that can generate a core dump
signal(signo, SIG_DFL);
if (info->si_code <= 0) {
if (syscall(__NR_tgkill, getpid(), syscall(__NR_gettid), signo) < 0) {
break;
}
}
#endif
return;
default:
break;
}
#endif
// Backstop exit call, just in case.
_exit(signo);
}
