svn commit: r348848 - user/pho/stress2/misc

[Peter Holm]

Author: pho
Date: Mon Jun 10 07:12:46 2019
New Revision: 348848
URL: https://svnweb.freebsd.org/changeset/base/348848

Log:
  Added a regression test.
  
  Sponsored by:	Dell EMC Isilon

Added:
  user/pho/stress2/misc/mmap35.sh   (contents, props changed)

Added: user/pho/stress2/misc/mmap35.sh
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ user/pho/stress2/misc/mmap35.sh	Mon Jun 10 07:12:46 2019	(r348848)
@@ -0,0 +1,114 @@
+#!/bin/sh
+
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2019 Dell EMC Isilon
+#
+# 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.
+#
+# $FreeBSD$
+#
+
+# mmap(2) should fail with "Invalid argument" on i386
+# Fixed by r348843
+
+. ../default.cfg
+[ `id -u` -ne 0 ] && echo "Must be root!" && exit 1
+[ "`uname -p`" = "i386" ] || exit 0
+
+dir=/tmp
+odir=`pwd`
+cd $dir
+sed '1,/^EOF/d' < $odir/$0 > $dir/mmap35.c
+mycc -o mmap35 -Wall -Wextra -O0 -g mmap35.c || exit 1
+cd $odir
+
+set -e
+mount | grep "on $mntpoint " | grep -q /dev/md && umount -f $mntpoint
+[ -c /dev/md$mdstart ] &&  mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 4g -u $mdstart
+newfs $newfs_flags -n md$mdstart > /dev/null
+mount /dev/md$mdstart $mntpoint
+set +e
+
+cd $mntpoint
+echo "Expect: mmap35: mmap: Invalid argument"
+$dir/mmap35
+s=$?
+[ -f mmap35.core ] &&
+    { ls -l mmap35.core; mv mmap35.core $dir; s=1; }
+cd $odir
+
+for i in `jot 6`; do
+	mount | grep -q "on $mntpoint " || break
+	umount $mntpoint && break || sleep 10
+	[ $i -eq 6 ] &&
+	    { echo FATAL; fstat -mf $mntpoint; exit 1; }
+done
+mdconfig -d -u $mdstart
+rm -f $dir/mmap35
+[ $s -eq 0 ] && rm -f mmap35.c
+exit $s
+
+EOF
+#include <sys/param.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#define SIZ 0xfffff0fcULL
+
+int
+main(void)
+{
+	off_t offset;
+	int fd;
+	char *c, file[80];
+
+	snprintf(file, sizeof(file), "file.%d", getpid());
+	if ((fd = open(file, O_RDWR | O_CREAT, DEFFILEMODE)) == -1)
+		err(1, "open(%s)", file);
+
+	offset = SIZ;
+	if (ftruncate(fd, offset) == -1)
+		err(1, "ftruncate(%jd)", offset);
+	write(fd, "b", 1);
+
+	c = mmap(NULL, offset, PROT_READ | PROT_WRITE, MAP_SHARED,
+	    fd, 0);
+	if (c == MAP_FAILED)
+		warn("mmap");
+	else
+		c[offset / 2] = 1;
+
+	unlink(file);
+
+	return (0);
+}