stress2: Added reagression tests

PR:	165392

5 files changed, 498 insertions, 0 deletions

diff --git a/tools/test/stress2/misc/nlink.sh b/tools/test/stress2/misc/nlink.sh
new file mode 100755
index 000000000000..1d3bde8c7d42
--- /dev/null
+++ b/tools/test/stress2/misc/nlink.sh
@@ -0,0 +1,96 @@
+#!/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.
+#
+
+# Regression test for:
+# D35514 UFS: make mkdir() reliable when using SU and reaching nlink limit
+# Bug 165392 - [ufs] [patch] Multiple mkdir/rmdir fails with errno 31
+
+. ../default.cfg
+
+cat > /tmp/nlink.c <<EOF
+#include <sys/stat.h>
+#include <ufs/ufs/dinode.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main (void) {
+	int i, mx;
+	char dir[100];
+
+	mx = UFS_LINK_MAX - 2;
+	for (i = 0; i < mx; i++) {
+		snprintf(dir, sizeof(dir), "%d", i);
+		if (mkdir(dir, 0700) == -1)
+			err(1, "mkdir(%s)", dir);
+	}
+
+	/* The following mkdir(2) must fail */
+	i = mx;
+	snprintf(dir, sizeof(dir), "%d", i);
+	if (mkdir(dir, 0700) != -1)	/* this must fail */
+		err(1, "mkdir(%s)", dir);
+	if (errno != EMLINK)
+		err(1, "Must fail: mkdir(%s)", dir);
+
+	/* Must succeed */
+	i = 0;
+	snprintf(dir, sizeof(dir), "%d", i);
+	if (rmdir(dir) == -1)
+		err(1, "rmdir(%s)", dir);
+	snprintf(dir, sizeof(dir), "%s", "a");
+	if (mkdir(dir, 0700) == -1)
+		err(1, "mkdir(%s)", dir);
+
+	return (0);
+}
+EOF
+mycc -o /tmp/nlink -Wall -Wextra -O2 /tmp/nlink.c || exit 1
+rm /tmp/nlink.c
+
+set -e
+here=`pwd`
+mount | grep -q "on $mntpoint " && umount -f $mntpoint
+mdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 1g -u $mdstart
+newfs -Un /dev/md$mdstart > /dev/null
+mount /dev/md$mdstart $mntpoint
+set +e
+
+cd $mntpoint
+/tmp/nlink; s=$?
+n=`ls -a | wc -l`
+[ $s -ne 0 ] && echo "$n dirs"
+cd $here
+
+umount $mntpoint
+mdconfig -d -u $mdstart
+rm /tmp/nlink
+exit $s
diff --git a/tools/test/stress2/misc/nlink2.sh b/tools/test/stress2/misc/nlink2.sh
new file mode 100755
index 000000000000..41cdaa676fc9
--- /dev/null
+++ b/tools/test/stress2/misc/nlink2.sh
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+#
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org>
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+# SUCH DAMAGE.
+#
+
+# Simple test to demonstrate EMLINK issue on a SU file system.
+
+# mkdir: /mnt10/a994: Too many links
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+. ../default.cfg
+
+echo "$newfs_flags" | grep -q U || exit 0
+log=/tmp/nlink2.sh.log
+md=$mdstart
+mp=/mnt$md
+mkdir -p $mp
+set -e
+mount | grep -q "on $mp " && umount -f $mp
+mdconfig -l | grep -q md$md && mdconfig -d -u $md
+
+mdconfig -a -t swap -s 1g -u $md
+newfs $newfs_flags -n md$md > /dev/null
+mount /dev/md$md $mp
+set +e
+
+start=`date +%s`
+for i in `jot 1000`; do
+	jot 1000 | xargs -P0 -I% mkdir $mp/a% || { s=1; break; }
+	jot 1000 | xargs -P0 -I% rmdir $mp/a%
+	t=$((`date +%s` - start))
+	if [ $t -ge 300 ]; then
+		echo "Warn: Timed out in loop #$i after $t seconds"
+		break
+	fi
+done
+if [ $s ]; then
+	echo "Failed in loop #$i"
+	df -i $mp
+fi
+
+umount $mp
+fsck_ffs -fy /dev/md$md > $log 2>&1
+grep -Eq "WAS MODIFIED" $log && { s=$((s + 2)); cat $log; }
+mdconfig -d -u $md
+rm -f $log
+exit $s
diff --git a/tools/test/stress2/misc/nlink3.sh b/tools/test/stress2/misc/nlink3.sh
new file mode 100755
index 000000000000..2484e8569928
--- /dev/null
+++ b/tools/test/stress2/misc/nlink3.sh
@@ -0,0 +1,106 @@
+#!/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.
+#
+
+# https://reviews.freebsd.org/D35514
+# link() version
+
+. ../default.cfg
+
+cat > /tmp/nlink3.c <<EOF
+#include <sys/stat.h>
+#include <ufs/ufs/dinode.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main (void) {
+	int fd, i, mx;
+	char file[100];
+
+	snprintf(file, sizeof(file), "f");
+	if ((fd = open(file, O_RDWR | O_CREAT | O_TRUNC,
+	    DEFFILEMODE)) == -1)
+		err(1, "creat(%s)", file);
+	close(fd);
+
+	mx = UFS_LINK_MAX - 1; /* UFS_LINK_MAX = 32767 */
+	for (i = 0; i < mx; i++) {
+		snprintf(file, sizeof(file), "%d", i);
+		if (link("f", file) == -1)
+			err(1, "link(%s, %s)", "f", file);
+
+	}
+
+	/* The following link(2) must fail */
+	i = mx;
+	snprintf(file, sizeof(file), "%d", i);
+	if (link("f", file) != -1)
+		err(1, "link(%s, %s)", "f", file);
+	if (errno != EMLINK)
+		err(1, "Must fail: link(%s, %s)", "f", file);
+
+	i = 0;
+	snprintf(file, sizeof(file), "%d", i);
+	if (unlink(file) == -1)
+		err(1, "unlink(%s)", file);
+
+	/* Must succeed */
+	i = mx;
+	snprintf(file, sizeof(file), "%d", i);
+	if (link("f", file) == -1)
+		err(1, "link(%s, %s)", "f", file);
+
+	return (0);
+}
+EOF
+mycc -o /tmp/nlink3 -Wall -Wextra -O2 /tmp/nlink3.c || exit 1
+rm /tmp/nlink3.c
+
+set -e
+here=`pwd`
+mount | grep -q "on $mntpoint " && umount -f $mntpoint
+mdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 1g -u $mdstart
+newfs -Un /dev/md$mdstart > /dev/null
+mount /dev/md$mdstart $mntpoint
+set +e
+
+cd $mntpoint
+/tmp/nlink3; s=$?
+n=`ls -a | wc -l`
+[ $s -ne 0 ] && echo "$n files"
+cd $here
+
+umount $mntpoint
+mdconfig -d -u $mdstart
+rm /tmp/nlink3
+exit $s
diff --git a/tools/test/stress2/misc/nlink4.sh b/tools/test/stress2/misc/nlink4.sh
new file mode 100755
index 000000000000..12412666b182
--- /dev/null
+++ b/tools/test/stress2/misc/nlink4.sh
@@ -0,0 +1,105 @@
+#!/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.
+#
+
+# https://reviews.freebsd.org/D35514
+# rename(2) version
+
+. ../default.cfg
+
+cat > /tmp/nlink4.c <<EOF
+#include <sys/stat.h>
+#include <ufs/ufs/dinode.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main (void) {
+	int fd, i, mx;
+	char file[100];
+
+	snprintf(file, sizeof(file), "f");
+	if ((fd = open(file, O_RDWR | O_CREAT | O_TRUNC,
+	    DEFFILEMODE)) == -1)
+		err(1, "creat(%s)", file);
+	close(fd);
+
+	mx = UFS_LINK_MAX - 1; /* UFS_LINK_MAX = 32767 */
+	for (i = 0; i < mx; i++) {
+		snprintf(file, sizeof(file), "%d", i);
+		if (link("f", file) == -1)
+			err(1, "link(%s, %s)", "f", file);
+
+	}
+
+	/* The following link(2) must fail */
+	i = mx;
+	snprintf(file, sizeof(file), "%d", i);
+	if (link("f", file) != -1)
+		err(1, "link(%s, %s)", "f", file);
+	if (errno != EMLINK)
+		err(1, "Must fail: link(%s, %s)", "f", file);
+
+	/* Must succeed */
+	i = 0;
+	snprintf(file, sizeof(file), "%d", i);
+	if (unlink(file) == -1)
+		err(1, "unlink(%s)", file);
+	if (rename("1", "a") == -1) {
+		if (errno == EMLINK)
+			fprintf(stderr, "Unexpected EMLINK\n");
+		err(1, "rename(%s, %s)", "1", "a");
+	}
+
+	return (0);
+}
+EOF
+mycc -o /tmp/nlink4 -Wall -Wextra -O2 /tmp/nlink4.c || exit 1
+rm /tmp/nlink4.c
+
+set -e
+here=`pwd`
+mount | grep -q "on $mntpoint " && umount -f $mntpoint
+mdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 1g -u $mdstart
+newfs -Un /dev/md$mdstart > /dev/null
+mount /dev/md$mdstart $mntpoint
+set +e
+
+cd $mntpoint
+/tmp/nlink4; s=$?
+n=`ls -a | wc -l`
+[ $s -ne 0 ] && echo "$n files"
+cd $here
+
+umount $mntpoint
+mdconfig -d -u $mdstart
+rm /tmp/nlink4
+exit $s
diff --git a/tools/test/stress2/misc/nlink5.sh b/tools/test/stress2/misc/nlink5.sh
new file mode 100755
index 000000000000..c90f43b35dd5
--- /dev/null
+++ b/tools/test/stress2/misc/nlink5.sh
@@ -0,0 +1,120 @@
+#!/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.
+#
+
+# https://reviews.freebsd.org/D35514
+# Rename dir a/b to c/d
+
+# Test scenario suggestion by kib
+
+. ../default.cfg
+
+cat > /tmp/nlink5.c <<EOF
+#include <sys/stat.h>
+#include <ufs/ufs/dinode.h>
+#include <err.h>
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main (void) {
+	int i, mx;
+	char dir[100];
+
+	mx = UFS_LINK_MAX - 2; /* UFS_LINK_MAX = 32767 */
+	for (i = 0; i < mx; i++) {
+		snprintf(dir, sizeof(dir), "%d", i);
+		if (mkdir(dir, 0700) == -1)
+			err(1, "mkdir(%s)", dir);
+	}
+
+	/* The following mkdir(2) must fail */
+	i = mx;
+	snprintf(dir, sizeof(dir), "%d", i);
+	if (mkdir(dir, 0700) != -1)	/* this must fail */
+		err(1, "mkdir(%s)", dir);
+	if (errno != EMLINK)
+		err(1, "Must fail: mkdir(%s)", dir);
+
+	/* Must succeed */
+	i = 0;
+	snprintf(dir, sizeof(dir), "%d", i);
+	if (rmdir(dir) == -1)
+		err(1, "rmdir(%s)", dir);
+	snprintf(dir, sizeof(dir), "%s", "x");
+	if (mkdir(dir, 0700) == -1)
+		err(1, "mkdir(%s)", dir);
+
+	/* Make room for two top level directories */
+	if (rmdir("1") == -1)
+		err(1, "rmdir(1)");
+	if (rmdir("2") == -1)
+		err(1, "rmdir(2)");
+
+	/* mkdir a c */
+	snprintf(dir, sizeof(dir), "%s", "a");
+	if (mkdir(dir, 0700) == -1)
+		err(1, "mkdir(%s)", dir);
+	snprintf(dir, sizeof(dir), "%s", "c");
+	if (mkdir(dir, 0700) == -1)
+		err(1, "mkdir(%s)", dir);
+
+	/* mkdir a/b */
+	snprintf(dir, sizeof(dir), "%s/%s", "a", "b");
+	if (mkdir(dir, 0700) == -1)
+		err(1, "mkdir(%s)", dir);
+
+	/* mv a/b c/d */
+	if (rename("a/b", "c/d") == -1)
+		err(1, "rename(a/b, c/d)");
+
+	return (0);
+}
+EOF
+mycc -o /tmp/nlink5 -Wall -Wextra -O2 /tmp/nlink5.c || exit 1
+rm /tmp/nlink5.c
+
+set -e
+here=`pwd`
+mount | grep -q "on $mntpoint " && umount -f $mntpoint
+mdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart
+mdconfig -a -t swap -s 1g -u $mdstart
+newfs -Un /dev/md$mdstart > /dev/null
+mount /dev/md$mdstart $mntpoint
+set +e
+
+cd $mntpoint
+/tmp/nlink5; s=$?
+n=`find . -type d -maxdepth 1 | wc -l`
+[ $n -ne 32766 ] && s=2
+cd $here
+
+umount $mntpoint
+mdconfig -d -u $mdstart
+rm /tmp/nlink5
+exit $s