From: Daniel P. Berrange <berrange@redhat.com>
Date: Wed, 6 Jul 2011 16:11:03 +0000 (+0100)
Subject: Ensure signal handler propagates fatal signals to default handler
X-Git-Tag: v0.9.4-rc1~212
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=83d768fab816dccc34fd3fa0d5e56f4ee9597550;p=thirdparty%2Flibvirt.git

Ensure signal handler propagates fatal signals to default handler

When replacing the default SEGV/ABORT/BUS signal handlers you
can't rely on the process being terminated after your custom
handler runs. It is neccessary to manually restore the default
handler and then re-raise the signal

* src/rpc/virnetserver.c: Restore default handler and raise
  signal
---

diff --git a/src/rpc/virnetserver.c b/src/rpc/virnetserver.c
index 66edd11d54..35f18b9d51 100644
--- a/src/rpc/virnetserver.c
+++ b/src/rpc/virnetserver.c
@@ -264,8 +264,9 @@ static void virNetServerFatalSignal(int sig, siginfo_t *siginfo ATTRIBUTE_UNUSED
 #ifdef SIGUSR2
     if (sig != SIGUSR2) {
 #endif
-        sig_action.sa_handler = SIG_IGN;
+        sig_action.sa_handler = SIG_DFL;
         sigaction(sig, &sig_action, NULL);
+        raise(sig);
 #ifdef SIGUSR2
     }
 #endif