Regression test for the recent rfork+kqueue fix

2 files changed, 55 insertions, 0 deletions

diff --git a/regress/sys/kern/rfork/kqueue/Makefile b/regress/sys/kern/rfork/kqueue/Makefile
new file mode 100644
index 00000000000..7a3dcf68cc5
--- /dev/null
+++ b/regress/sys/kern/rfork/kqueue/Makefile
@@ -0,0 +1,5 @@
+#	$OpenBSD: Makefile,v 1.1 2010/08/04 06:05:26 guenther Exp $
+
+PROG=kqueue
+
+.include <bsd.regress.mk>
diff --git a/regress/sys/kern/rfork/kqueue/kqueue.c b/regress/sys/kern/rfork/kqueue/kqueue.c
new file mode 100644
index 00000000000..f21fadc5798
--- /dev/null
+++ b/regress/sys/kern/rfork/kqueue/kqueue.c
@@ -0,0 +1,50 @@
+/*	$OpenBSD: kqueue.c,v 1.1 2010/08/04 06:05:26 guenther Exp $	*/
+/*
+ * Written by Philip Guenther <guenther@openbsd.org>, 2010 Public Domain.
+ *
+ * Verify that having a process exit while it has knotes attached to it
+ * that are from a kqueue that is open in another process doesn't cause
+ * problems.
+ */
+#include <sys/param.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <err.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int
+main(int argc, char *argv[])
+{
+	struct kevent ev;
+	int status;
+	int kq;
+
+	if ((kq = kqueue()) < 0)
+		err(1, "kqueue");
+
+	signal(SIGINT, SIG_IGN);
+	EV_SET(&ev, SIGINT, EVFILT_SIGNAL, EV_ADD|EV_ENABLE, 0, 0, 0);
+
+	switch(rfork(RFPROC)) {
+	case -1:
+		err(1, "rfork");
+	case 0:
+		if (kevent(kq, &ev, 1, NULL, 0, NULL))
+			err(1, "kevent");
+		raise(SIGINT);
+		_exit(0);
+	}
+
+	if (wait(&status) < 0)
+		err(1, "wait");
+
+	if (!WIFEXITED(status))
+		err(1, "child error");
+
+	return WEXITSTATUS(status) != 0;
+}