> >What about the following enhancement: I check with sig_fatal if it would
quoted text
> >kill the process and only then emit a message. So when an application
> >takes care itself of handling it nothing is printed.
> >+	/* emit some logging for unhandled signals
> >+	 */
> >+	if (sig_fatal(t, sig))
> Not unhandled_signal()?

Can we already use that one in send_signal? As the signal needs to be
send first I think before we know if it was handled or not? sig_fatal
checks if the handler is set to default - which is it is not taken care
of.

quoted text
> >+	{
> if (sig_fatal(t, sig)) {
> >+		printk(KERN_WARNING "Sig %d send to %d owned by %d.%d (%s)\n",
> s/send/sent/;
> >+		sig, t -> pid, t -> uid, t -> gid, t -> comm);
> t->pid, t->uid, t->gid, t->comm);


Description:
This patch adds code to the signal-sender making it log a message when
an unhandled fatal signal will be delivered.

Signed-off by: Folkert van Heusden <folkert@vanheusden.com>

--- kernel/signal.c.org	2007-05-20 22:47:13.000000000 +0200
+++ kernel/signal.c	2007-05-21 14:46:05.000000000 +0200
@@ -739,6 +739,12 @@
 	struct sigqueue * q = NULL;
 	int ret = 0;
 
+	/* unhandled fatal signals are logged */
+	if (sig_fatal(t, sig)) {
+		printk(KERN_WARNING "Sig %d sent to %d owned by %d.%d (%s)\n",
+		sig, t->pid, t->uid, t->gid, t->comm);
+	}
+
 	/*
 	 * fast-pathed signals for kernel-internal things like SIGSTOP
 	 * or SIGKILL.


Folkert van Heusden

-- 
MultiTail è uno flexible tool per seguire di logfiles e effettuazione
di commissioni. Feltrare, provedere da colore, merge, 'diff-view',
etc. http://www.vanheusden.com/multitail/
----------------------------------------------------------------------
Phone: +31-6-41278122, PGP-key: 1F28D8AE, www.vanheusden.com
-
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/