git: a565cc81c04e - main - unionfs: add stress2 scenarios for write references

The branch main has been updated by jah:

URL: https://cgit.FreeBSD.org/src/commit/?id=a565cc81c04e94330115a742ee86378a91f9ee4c

commit a565cc81c04e94330115a742ee86378a91f9ee4c
Author:     Jason A. Harmening <jah@FreeBSD.org>
AuthorDate: 2022-01-03 15:00:55 +0000
Commit:     Jason A. Harmening <jah@FreeBSD.org>
CommitDate: 2022-01-12 02:44:03 +0000

    unionfs: add stress2 scenarios for write references
    
    Add some test cases, based on the existing nullfs10 scenario, to
    ensure that unionfs write references are propagated between the
    unionfs and underlying vnodes, including unionfs copy-on-write
    operations
    
    Reviewed by: kib (prior version), markj, pho
    Differential Revision: https://reviews.freebsd.org/D33729
---
 tools/test/stress2/misc/unionfs10.sh | 87 +++++++++++++++++++++++++++++++++++
 tools/test/stress2/misc/unionfs11.sh | 87 +++++++++++++++++++++++++++++++++++
 tools/test/stress2/misc/unionfs12.sh | 88 ++++++++++++++++++++++++++++++++++++
 3 files changed, 262 insertions(+)

diff --git a/tools/test/stress2/misc/unionfs10.sh b/tools/test/stress2/misc/unionfs10.sh
new file mode 100755
index 000000000000..866de62d9ff0
--- /dev/null
+++ b/tools/test/stress2/misc/unionfs10.sh
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2022 Jason Harmening <jah@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.
+#
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+# Regression test:
+
+# There is an issue, namely, when the lower file is already
+# opened r/w, but its nullfs alias is executed. This situation obviously
+# shall result in ETXTBUSY, but it currently does not.
+
+# Based on nullfs10.sh by pho@, original test scenario by kib@
+
+. ../default.cfg
+
+md1=$mdstart
+md2=$((md1 + 1))
+mp1=/mnt$md1
+mp2=/mnt$md2
+mkdir -p $mp1 $mp2
+set -e
+for i in $mp1 $mp2; do
+	mount | grep -q "on $i " && umount -f $i
+done
+for i in $md1 $md2; do
+	mdconfig -l | grep -q md$i && mdconfig -d -u $i
+done
+
+mdconfig -a -t swap -s 4g -u $md1
+mdconfig -a -t swap -s 4g -u $md2
+newfs $newfs_flags -n md$md1 > /dev/null
+newfs $newfs_flags -n md$md2 > /dev/null
+mount /dev/md$md1 $mp1
+mount /dev/md$md2 $mp2
+
+mount -t unionfs -o noatime $mp1 $mp2
+set +e
+
+mount | grep -E "$mp1|$mp2"
+
+chmod 777 $mp1
+chmod 777 $mp2
+
+cp /bin/ls $mp1
+chmod +w $mp1/ls
+sleep 2 >> $mp1/ls &
+sleep .5
+
+# This line should cause a "$mp2/ls: Text file busy" error
+$mp2/ls -l /bin/ls $mp1 $mp2 && echo FAIL || echo OK
+kill $!
+wait
+
+while mount | grep -q "$mp2 "; do
+	umount $mp2 || sleep 1
+done
+
+while mount | grep -q "$mp1 "; do
+	umount $mp1 || sleep 1
+done
+mdconfig -d -u $md2
+mdconfig -d -u $md1
diff --git a/tools/test/stress2/misc/unionfs11.sh b/tools/test/stress2/misc/unionfs11.sh
new file mode 100755
index 000000000000..b86be896d8f5
--- /dev/null
+++ b/tools/test/stress2/misc/unionfs11.sh
@@ -0,0 +1,87 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2022 Jason Harmening <jah@FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+# Regression test:
+
+# There is an issue, namely, when the lower file is already
+# opened r/w, but its nullfs alias is executed. This situation obviously
+# shall result in ETXTBUSY, but it currently does not.
+
+# Based on nullfs10.sh by pho@, original test scenario by kib@
+
+. ../default.cfg
+
+md1=$mdstart
+md2=$((md1 + 1))
+mp1=/mnt$md1
+mp2=/mnt$md2
+mkdir -p $mp1 $mp2
+set -e
+for i in $mp1 $mp2; do
+	mount | grep -q "on $i " && umount -f $i
+done
+for i in $md1 $md2; do
+	mdconfig -l | grep -q md$i && mdconfig -d -u $i
+done
+
+mdconfig -a -t swap -s 4g -u $md1
+mdconfig -a -t swap -s 4g -u $md2
+newfs $newfs_flags -n md$md1 > /dev/null
+newfs $newfs_flags -n md$md2 > /dev/null
+mount /dev/md$md1 $mp1
+mount /dev/md$md2 $mp2
+
+mount -t unionfs -o noatime $mp1 $mp2
+set +e
+
+mount | grep -E "$mp1|$mp2"
+
+chmod 777 $mp1
+chmod 777 $mp2
+
+cp /bin/ls $mp2
+chmod +w $mp2/ls
+sleep 2 >> $mp2/ls &
+sleep .5
+
+# This line should cause a "$mp1/ls: Text file busy" error
+$mp1/ls -l /bin/ls $mp1 $mp2 && echo FAIL || echo OK
+kill $!
+wait
+
+while mount | grep -q "$mp2 "; do
+	umount $mp2 || sleep 1
+done
+
+while mount | grep -q "$mp1 "; do
+	umount $mp1 || sleep 1
+done
+mdconfig -d -u $md2
+mdconfig -d -u $md1
diff --git a/tools/test/stress2/misc/unionfs12.sh b/tools/test/stress2/misc/unionfs12.sh
new file mode 100755
index 000000000000..62d1b494cda9
--- /dev/null
+++ b/tools/test/stress2/misc/unionfs12.sh
@@ -0,0 +1,88 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2022 Jason Harmening <jah@FreeBSD.org>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+# Regression test:
+
+# There is an issue, namely, when the lower file is already
+# opened r/w, but its nullfs alias is executed. This situation obviously
+# shall result in ETXTBUSY, but it currently does not.
+
+# Based on nullfs10.sh by pho@, original test scenario by kib@
+
+. ../default.cfg
+
+md1=$mdstart
+md2=$((md1 + 1))
+mp1=/mnt$md1
+mp2=/mnt$md2
+mkdir -p $mp1 $mp2
+set -e
+for i in $mp1 $mp2; do
+	mount | grep -q "on $i " && umount -f $i
+done
+for i in $md1 $md2; do
+	mdconfig -l | grep -q md$i && mdconfig -d -u $i
+done
+
+mdconfig -a -t swap -s 4g -u $md1
+mdconfig -a -t swap -s 4g -u $md2
+newfs $newfs_flags -n md$md1 > /dev/null
+newfs $newfs_flags -n md$md2 > /dev/null
+mount /dev/md$md1 $mp1
+mount /dev/md$md2 $mp2
+
+mkdir $mp2/shadow
+cp /bin/ls $mp2/shadow/
+mount -t unionfs -o noatime $mp1 $mp2
+set +e
+
+mount | grep -E "$mp1|$mp2"
+
+chmod 777 $mp1
+chmod 777 $mp2
+
+chmod +w $mp2/shadow/ls
+sleep 2 >> $mp2/shadow/ls &
+sleep .5
+
+# This line should cause a "$mp1/shadow/ls: Text file busy" error
+$mp1/shadow/ls -l /bin/ls $mp1 $mp2 && echo FAIL || echo OK
+kill $!
+wait
+
+while mount | grep -q "$mp2 "; do
+	umount $mp2 || sleep 1
+done
+
+while mount | grep -q "$mp1 "; do
+	umount $mp1 || sleep 1
+done
+mdconfig -d -u $md2
+mdconfig -d -u $md1