Add a test for inheriting kqueue descriptors on fork.

1 files changed, 46 insertions, 0 deletions

diff --git a/regress/sys/kern/kqueue/kqueue-fork.c b/regress/sys/kern/kqueue/kqueue-fork.c
new file mode 100644
index 00000000000..497ffbd90a5
--- /dev/null
+++ b/regress/sys/kern/kqueue/kqueue-fork.c
@@ -0,0 +1,46 @@
+/*	$OpenBSD: kqueue-fork.c,v 1.1 2002/02/27 17:11:51 art Exp $	*/
+/*
+ *	Written by Artur Grabowski <art@openbsd.org> 2002 Public Domain
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <err.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/event.h>
+#include <sys/wait.h>
+
+int
+check_inheritance(void)
+{
+	int kq, status;
+
+	if ((kq = kqueue()) < 0) {
+		warn("kqueue");
+		return (1);
+	}
+
+	/*
+	 * Check if the kqueue is properly closed on fork().
+	 */
+
+	switch (fork()) {
+	case -1:
+		err(1, "fork");
+	case 0:
+		if (close(kq) < 0)
+			_exit(0);
+		warnx("fork didn't close kqueue");
+		_exit(1);
+	}
+	if (wait(&status) < 0)
+		err(1, "wait");
+
+	if (!WIFEXITED(status))
+		errx(1, "child didn't exit?");
+
+	close(kq);
+	return (WEXITSTATUS(status) != 0);
+}