svn commit: r253669 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Jul 26 09:11:38 2013
New Revision: 253669
URL: http://svnweb.freebsd.org/changeset/base/253669

Log:
  Added an old vnode leak regression test.
  
  Sponsored by:	EMC / Isilon storage division

Added:
  user/pho/stress2/misc/vnodes.sh   (contents, props changed)

Added: user/pho/stress2/misc/vnodes.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/vnodes.sh	Fri Jul 26 09:11:38 2013	(r253669)
@@ -0,0 +1,83 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2012 Peter Holm <pho at FreeBSD.org>
+# 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.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
+#
+# $FreeBSD$
+#
+
+# Demonstrate vnode leak
+
+# Test scenario by Petr Salinger <Petr Salinger seznam cz>
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > vnodes.c
+cc -o vnodes -Wall -O2 vnodes.c
+rm -f vnodes.c
+
+old=`sysctl vfs.numvnodes | tail -1 | sed 's/.*: //'`
+/tmp/vnodes
+new=`sysctl vfs.numvnodes | tail -1 | sed 's/.*: //'`
+[ $((new - old)) -gt 100 ] && echo "FAIL vnode leak"
+
+rm -f /tmp/vnodes
+exit 0
+EOF
+#include <sys/types.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <unistd.h>
+
+
+char dname[]= "/dev/ptyrX";
+
+void leak(void)
+{
+	int i, fd;
+
+	if (fork() == 0) {
+		for (i = '0'; i < '9'; i ++) {
+			dname[9] = i;
+			fd = open(dname, O_RDWR);
+		}
+		exit(0);
+	}
+	wait(NULL);
+}
+
+int main()
+{
+	int i;
+
+	for (i = 0 ;i < 100000; i++) {
+		leak();
+	}
+	return 0;
+}