1 files changed, 133 insertions, 0 deletions
diff --git a/tools/test/stress2/misc/zfs12.sh b/tools/test/stress2/misc/zfs12.sh
new file mode 100755
index 000000000000..cfabca2b9f6f
--- /dev/null
+++ b/tools/test/stress2/misc/zfs12.sh
@@ -0,0 +1,133 @@
+#!/bin/sh
+
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2021 Peter Holm
+#
+# 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.
+#
+
+# lseek(SEEK_HOLE): finds hole
+# Test scenario suggestion by: kib@
+# Related to:
+# Bug 256205 - ZFS: data corruption with SEEK_HOLE/SEEK_DATA on dirty files ...
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+kldstat -v | grep -q zfs.ko  || { kldload zfs.ko; loaded=1; } ||
+    exit 0
+
+. ../default.cfg
+
+here=`pwd`
+cd /tmp
+sed '1,/^EOF/d' < $here/$0 > zfs12.c
+mycc -o zfs12 -Wall -Wextra -O0 -g zfs12.c || exit 1
+rm -f zfs12.c
+cc -o /tmp/lsholes -Wall -Wextra -O2 $here/../tools/lsholes.c | exit 1
+
+mp1=/stress2_tank/test
+u1=$mdstart
+u2=$((u1 + 1))
+
+set -e
+mdconfig -l | grep -q md$u1 && mdconfig -d -u $u1
+mdconfig -l | grep -q md$u2 && mdconfig -d -u $u2
+
+mdconfig -s 2g -u $u1
+mdconfig -s 2g -u $u2
+
+zpool list | egrep -q "^stress2_tank" && zpool destroy stress2_tank
+[ -d /stress2_tank ] && rm -rf /stress2_tank
+zpool create stress2_tank md$u1 md$u2
+zfs create stress2_tank/test
+set +e
+
+(cd $here/../testcases/swap; ./swap -t 2m -i 20 -l 100 -h > /dev/null) &
+file1=$mp1/file		# zfs path
+sleep 20
+/tmp/zfs12 $file1
+/tmp/lsholes $file1
+s=$?
+while pkill swap; do sleep 1; done
+wait
+
+zfs umount stress2_tank/test
+zfs destroy -r stress2_tank
+zpool destroy stress2_tank
+mdconfig -d -u $u1
+mdconfig -d -u $u2
+rm -f /tmp/zfs12 /tmp/lsholes
+[ $loaded ] && kldunload zfs.ko
+exit $s
+EOF
+#include <sys/types.h>
+#include <err.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#define SIZ  (500UL * 1024 * 1024)
+
+int
+main(int argc __unused, char *argv[])
+{
+	off_t hole;
+	size_t len;
+	int fd;
+	char *p, *path;
+
+	len = SIZ;
+
+	path = argv[1];
+	if ((fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0622)) == -1)
+		err(1,"open()");
+	if (ftruncate(fd, len) == -1)
+		err(1, "ftruncate");
+	if ((p = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) ==
+			MAP_FAILED) {
+		if (errno == ENOMEM)
+			return (1);
+		err(1, "mmap(1)");
+	}
+	p[1 * 1024] = 1;
+	p[2 * 1024] = 1;
+	p[4 * 1024] = 1;
+
+	if (msync(p, len, MS_SYNC | MS_INVALIDATE) == -1)
+		err(1, "msync()");
+
+	if ((hole = lseek(fd, 0, SEEK_HOLE)) == -1)
+		err(1, "lseek(SEEK_HOLE)");
+	if (hole != SIZ)
+		printf("--> hole = %jd, file size=%jd\n",
+		    (intmax_t)hole, (intmax_t)SIZ);
+	close(fd);
+
+	return (hole == SIZ ? 0 : 1);
+}