simple kqueue test for pipes

1 files changed, 75 insertions, 0 deletions

diff --git a/regress/sys/kern/kqueue/kqueue-pipe.c b/regress/sys/kern/kqueue/kqueue-pipe.c
new file mode 100644
index 00000000000..d8e48e1f991
--- /dev/null
+++ b/regress/sys/kern/kqueue/kqueue-pipe.c
@@ -0,0 +1,75 @@
+/*	$OpenBSD: kqueue-pipe.c,v 1.1 2002/01/07 00:01:00 provos Exp $	*/
+/*
+ * Copyright 2001 Niels Provos <provos@citi.umich.edu>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by Niels Provos.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/event.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int
+main(int argc, char **argv)
+{
+        int kq;
+        int n;
+        int fd[2];
+        struct kevent ev;
+        struct timespec ts;
+        char buf[8000];
+
+        if (pipe(fd) == -1)
+                exit(1);
+        if (fcntl(fd[1], F_SETFL, O_NONBLOCK) == -1)
+                exit(1);
+
+        while ((n = write(fd[1], buf, sizeof(buf))) == sizeof(buf))
+                ;
+
+        if ((kq = kqueue()) == -1)
+                exit(1);
+
+        ev.ident = fd[1];
+        ev.filter = EVFILT_WRITE;
+        ev.flags = EV_ADD | EV_ENABLE;
+        n = kevent(kq, &ev, 1, NULL, 0, NULL);
+        if (n == -1)
+                exit(1);
+        
+        read(fd[0], buf, sizeof(buf));
+
+        ts.tv_sec = 0;
+        ts.tv_nsec = 0;
+        n = kevent(kq, NULL, 0, &ev, 1, &ts);
+        if (n == -1 || n == 0)
+                exit(1);
+
+        exit(0);
+}