stress2: Added a new test scenario

tools/test/stress2/misc/renameat2.sh

@@ -0,0 +1,116 @@
+#!/bin/sh
+
+#
+# Copyright (c) 2026 Peter Holm <pho@FreeBSD.org>
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+
+# Simple renameat2 test scenario
+
+[ `id -u ` -ne 0 ] && echo "Must be root!" && exit 1
+
+. ../default.cfg
+err=0
+prog=$(basename "$0" .sh)
+
+cat > /tmp/$prog.c <<EOF
+#include <sys/stat.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+main(void)
+{
+	int fd;
+	char *f1 = "f1";
+	char *f2 = "f2";
+	char *t1 = "t1";
+
+	if ((fd = open(f1, O_RDWR | O_CREAT, DEFFILEMODE)) == -1)
+		err(1, "open(%s)", f1);
+	close(fd);
+	if ((fd = open(f2, O_RDWR | O_CREAT, DEFFILEMODE)) == -1)
+		err(1, "open(%s)", f2);
+	close(fd);
+
+	if (renameat2(AT_FDCWD, f1, AT_FDCWD, t1, AT_RENAME_NOREPLACE) == -1)
+		err(1, "renameat2(%s, %s)", f1, t1);
+	if (renameat2(AT_FDCWD, f2, AT_FDCWD, t1, AT_RENAME_NOREPLACE) == 0)
+		errx(1, "renameat2(%s, %s)", f2, t1);
+	if (errno != EEXIST && errno != EOPNOTSUPP)
+		err(1, "renameat2(%s, %s)", f2, t1);
+	if (unlink(f2) != 0)
+		err(1, "unlink(%s)", f2);
+	if (unlink(t1) != 0)
+		err(1, "unlink(%s)", t1);
+}
+EOF
+cc -o /tmp/$prog -Wall -Wextra -O0 /tmp/$prog.c || exit 1
+
+echo ufs
+set -eu
+mount | grep -q "on $mntpoint " && umount -f $mntpoint
+mdconfig -l | grep -q md$mdstart && mdconfig -d -u $mdstart
+mdconfig -s 1g -u $mdstart
+newfs $newfs_flags /dev/md$mdstart > /dev/null
+mount /dev/md$mdstart $mntpoint
+set +e
+
+cd $mntpoint
+/tmp/$prog || err=$((err+1))
+cd -
+umount $mntpoint
+mdconfig -d -u $mdstart
+
+echo tmpfs
+mount -t tmpfs dummy $mntpoint
+cd $mntpoint
+/tmp/$prog || err=$((err+1))
+cd -
+umount $mntpoint
+
+echo msdosfs
+if [ -x /sbin/mount_msdosfs ]; then
+	mdconfig -a -t swap -s 1g -u $mdstart
+	gpart create -s bsd md$mdstart > /dev/null
+	gpart add -t freebsd-ufs md$mdstart > /dev/null
+	part=a
+	newfs_msdos -F 16 -b 8192 /dev/md${mdstart}$part > /dev/null 2>&1
+	mount_msdosfs -m 777 /dev/md${mdstart}$part $mntpoint
+
+	cd $mntpoint
+	/tmp/$prog || err=$((err+1))
+	cd -
+	umount $mntpoint
+fi
+echo zfs
+u1=$mdstart
+u2=$((u1 + 1))
+
+mdconfig -l | grep -q md$u1 && mdconfig -d -u $u1
+mdconfig -l | grep -q md$u2 && mdconfig -d -u $u2
+
+mdconfig -s 1g -u $u1
+mdconfig -s 1g -u $u2
+
+zpool list | egrep -q "^stress2_tank" && zpool destroy stress2_tank
+[ -d /stress2_tank ] && rm -rf /stress2_tank
+zpool create stress2_tank raidz md$u1 md$u2
+zfs create stress2_tank/test
+
+cd /stress2_tank/test
+/tmp/$prog || err=$((err+1))
+cd -
+
+zfs umount stress2_tank/test
+zfs destroy -r stress2_tank
+zpool destroy stress2_tank
+mdconfig -d -u $u1
+mdconfig -d -u $u2
+
+rm -f /tmp/$prog /tmp/$prog.c
+exit $err