svn commit: r228995 - projects/stress2/misc

[Peter Holm]

Author: pho
Date: Fri Dec 30 13:46:21 2011
New Revision: 228995
URL: http://svn.freebsd.org/changeset/base/228995

Log:
  One more tmpfs(5) test added.

Added:
  projects/stress2/misc/tmpfs6.sh   (contents, props changed)

Added: projects/stress2/misc/tmpfs6.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ projects/stress2/misc/tmpfs6.sh	Fri Dec 30 13:46:21 2011	(r228995)
@@ -0,0 +1,112 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2010 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.
+#
+# $FreeBSD$
+#
+
+# panic: deadlkres: possible deadlock detected for 0xc8576a00, blocked for 1801792 ticks
+
+# Scenario by kib@
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > tmpfs6.c
+cc -o tmpfs6 -Wall tmpfs6.c
+rm -f tmpfs6.c
+
+mount | grep $mntpoint | grep -q tmpfs && umount $mntpoint
+mount -t tmpfs tmpfs  $mntpoint
+
+(cd $mntpoint; /tmp/tmpfs6)
+rm -f /tmp/tmpfs6
+
+while mount | grep $mntpoint | grep -q tmpfs; do
+	umount $mntpoint || sleep 1
+done
+exit
+EOF
+#include <sys/types.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/mman.h>
+#include <err.h>
+
+int pagesize;
+
+#define FILESIZE (32 * 1024)
+char wbuffer[FILESIZE];
+
+void 
+test(void)
+{
+	int fd;
+	int len;
+	void *addr;
+	char filename[80];
+
+	snprintf(filename, sizeof(filename), "file.%07d", getpid());
+	if ((fd = open(filename, O_CREAT | O_TRUNC | O_RDWR, S_IRWXU)) == -1)
+		err(1, "open(%s)", filename);
+
+	if ((len = write(fd, wbuffer, FILESIZE)) != len)
+		err(1, "write()");
+
+	fsync(fd);
+
+	if ((addr = mmap(NULL, FILESIZE, PROT_READ | PROT_WRITE , MAP_SHARED, fd, 0)) == MAP_FAILED)
+		err(1, "mmap()");
+
+	if (lseek(fd, 0, SEEK_SET) != 0)
+		err(1, "lseek()");
+
+	if ((len = write(fd, addr, FILESIZE)) != len)
+		err(1, "write() 2");
+
+	if (munmap(addr, FILESIZE) == -1)
+		err(1, "munmap()");
+	close(fd);
+	unlink(filename);
+
+}
+
+int 
+main(int argc, char **argv)
+{
+	int i;
+
+	for (i = 0; i < 10000; i++)
+		test();
+
+	return (0);
+}