svn commit: r260098 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Dec 30 20:23:40 2013
New Revision: 260098
URL: http://svnweb.freebsd.org/changeset/base/260098

Log:
  Added old iosize_max test scenario.
  
  Sponsored by:	EMC / Isilon storage division

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

Added: user/pho/stress2/misc/rdwr.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/rdwr.sh	Mon Dec 30 20:23:40 2013	(r260098)
@@ -0,0 +1,122 @@
+#!/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.
+#
+# $FreeBSD$
+#
+
+# Test with read/write length of INT_MAX (i386) or INT_MAX+1 (amd64)
+
+. ../default.cfg
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+odir=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $odir/$0 > rdwr.c
+cc -o rdwr -Wall rdwr.c || exit
+rm -f rdwr.c
+
+oldclamp=`sysctl debug.devfs_iosize_max_clamp 2>/dev/null |
+    awk '{print $NF}'`
+if [ `uname -m` = amd64 ]; then
+	[ "$oldclamp" = "1" ] && sysctl debug.devfs_iosize_max_clamp=0
+fi
+for j in `jot 10`; do
+	/tmp/rdwr || { echo FAIL; break; }
+done
+if [ `uname -m` = amd64 ]; then
+	[ "$oldclamp" = "1" ] && sysctl debug.devfs_iosize_max_clamp=1
+fi
+
+rm -f /tmp/rdwr
+exit
+EOF
+#include <err.h>
+#include <fcntl.h>
+#include <sys/limits.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <unistd.h>
+
+int
+main(int argc, char **argv)
+{
+	int fd1, fd2;
+	size_t len;
+	void *p;
+	struct iovec iov;
+
+	alarm(120);
+	if ((fd1 = open("/dev/null", O_RDWR, 0)) == -1)
+		err(1, "open /dev/null");
+
+	if ((fd2 = open("/dev/zero", O_RDONLY)) == -1)
+		err(1, "open /dev/zero");
+
+	if (sizeof(size_t) == sizeof(int32_t))
+		len = (size_t)INT_MAX;		/* i386  */
+	else
+		len = (size_t)INT_MAX + 1;	/* amd64 */
+
+	if ((p = mmap(0, len, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd2, 0)) ==
+                        MAP_FAILED)
+		err(1, "mmap");
+
+	if (read(fd2, p, len) != len)
+		err(1, "read");
+
+	if (write(fd1, p, len) != len)
+		err(1, "write");
+
+	if (pread(fd2, p, len, 0) != len)
+		err(1, "pread");
+
+	if (pwrite(fd1, p, len, 0) != len)
+		err(1, "pwrite");
+
+
+	iov.iov_base = p;
+	iov.iov_len = len;
+	if (readv(fd2, &iov, 1) != len)
+		err(1, "readv");
+
+	if (writev(fd1, &iov, 1) != len)
+		err(1, "writev");
+
+	if (preadv(fd2, &iov, 1, 0) != len)
+		err(1, "preadv");
+
+	if (pwritev(fd1, &iov, 1, 0) != len)
+		err(1, "pwritev");
+
+	close(fd1);
+	close(fd2);
+
+
+	return (0);
+}