stress2: Added a regression test for D37024

tools/test/stress2/misc/tmpfs24.sh

@@ -0,0 +1,72 @@
+#!/bin/sh
+
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org>
+#
+# 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.
+#
+
+# A SEEK_HOLE / SEEK_DATA test scenario
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+
+prog=$(basename "$0" .sh)
+exp=/tmp/$prog.exp
+here=`pwd`
+log=/tmp/$prog.log
+
+cc -o /tmp/lsholes -Wall -Wextra -O2 $here/../tools/lsholes.c | exit 1
+cat > $exp <<EXP
+Min hole size is 4096, file size is 524288000.
+data #1 @ 0, size=4096)
+hole #2 @ 4096, size=4096
+data #3 @ 8192, size=4096)
+hole #4 @ 12288, size=4096
+data #5 @ 16384, size=4096)
+hole #6 @ 20480, size=524267520
+<<Missing EOF hole>>
+EXP
+
+set -eu
+mount -t tmpfs dummy $mntpoint
+set +e
+
+file=$mntpoint/file
+truncate -s 500m $file
+bs=`getconf MIN_HOLE_SIZE $file`
+printf "\001" | dd of=$file seek=$((0*bs)) bs=1 count=1 conv=notrunc status=none
+printf "\002" | dd of=$file seek=$((2*bs)) bs=1 count=1 conv=notrunc status=none
+printf "\003" | dd of=$file seek=$((4*bs)) bs=1 count=1 conv=notrunc status=none
+s1=0
+s2=0
+/tmp/lsholes $file > $log 2>&1; s1=$?
+
+cat $log
+diff -u $exp $log || s2=1
+
+umount $mntpoint
+rm -f /tmp/lsholes $exp $log
+exit $((s1 + s2))