125a1b1f3SPeter Holm#!/bin/sh 225a1b1f3SPeter Holm# 3*4d846d26SWarner Losh# SPDX-License-Identifier: BSD-2-Clause 425a1b1f3SPeter Holm# 525a1b1f3SPeter Holm# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org> 625a1b1f3SPeter Holm# 725a1b1f3SPeter Holm# Redistribution and use in source and binary forms, with or without 825a1b1f3SPeter Holm# modification, are permitted provided that the following conditions 925a1b1f3SPeter Holm# are met: 1025a1b1f3SPeter Holm# 1. Redistributions of source code must retain the above copyright 1125a1b1f3SPeter Holm# notice, this list of conditions and the following disclaimer. 1225a1b1f3SPeter Holm# 2. Redistributions in binary form must reproduce the above copyright 1325a1b1f3SPeter Holm# notice, this list of conditions and the following disclaimer in the 1425a1b1f3SPeter Holm# documentation and/or other materials provided with the distribution. 1525a1b1f3SPeter Holm# 1625a1b1f3SPeter Holm# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1725a1b1f3SPeter Holm# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1825a1b1f3SPeter Holm# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1925a1b1f3SPeter Holm# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2025a1b1f3SPeter Holm# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2125a1b1f3SPeter Holm# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2225a1b1f3SPeter Holm# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2325a1b1f3SPeter Holm# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2425a1b1f3SPeter Holm# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2525a1b1f3SPeter Holm# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2625a1b1f3SPeter Holm# SUCH DAMAGE. 2725a1b1f3SPeter Holm# 2825a1b1f3SPeter Holm 2925a1b1f3SPeter Holm# Regression test for: 3025a1b1f3SPeter Holm# D35514 UFS: make mkdir() reliable when using SU and reaching nlink limit 3125a1b1f3SPeter Holm# Bug 165392 - [ufs] [patch] Multiple mkdir/rmdir fails with errno 31 3225a1b1f3SPeter Holm 3325a1b1f3SPeter Holm. ../default.cfg 3425a1b1f3SPeter Holm 3525a1b1f3SPeter Holmcat > /tmp/nlink.c <<EOF 3625a1b1f3SPeter Holm#include <sys/stat.h> 3725a1b1f3SPeter Holm#include <ufs/ufs/dinode.h> 3825a1b1f3SPeter Holm#include <err.h> 3925a1b1f3SPeter Holm#include <errno.h> 4025a1b1f3SPeter Holm#include <stdio.h> 4125a1b1f3SPeter Holm#include <unistd.h> 4225a1b1f3SPeter Holm 4325a1b1f3SPeter Holmint 4425a1b1f3SPeter Holmmain (void) { 4525a1b1f3SPeter Holm int i, mx; 4625a1b1f3SPeter Holm char dir[100]; 4725a1b1f3SPeter Holm 4825a1b1f3SPeter Holm mx = UFS_LINK_MAX - 2; 4925a1b1f3SPeter Holm for (i = 0; i < mx; i++) { 5025a1b1f3SPeter Holm snprintf(dir, sizeof(dir), "%d", i); 5125a1b1f3SPeter Holm if (mkdir(dir, 0700) == -1) 5225a1b1f3SPeter Holm err(1, "mkdir(%s)", dir); 5325a1b1f3SPeter Holm } 5425a1b1f3SPeter Holm 5525a1b1f3SPeter Holm /* The following mkdir(2) must fail */ 5625a1b1f3SPeter Holm i = mx; 5725a1b1f3SPeter Holm snprintf(dir, sizeof(dir), "%d", i); 5825a1b1f3SPeter Holm if (mkdir(dir, 0700) != -1) /* this must fail */ 5925a1b1f3SPeter Holm err(1, "mkdir(%s)", dir); 6025a1b1f3SPeter Holm if (errno != EMLINK) 6125a1b1f3SPeter Holm err(1, "Must fail: mkdir(%s)", dir); 6225a1b1f3SPeter Holm 6325a1b1f3SPeter Holm /* Must succeed */ 6425a1b1f3SPeter Holm i = 0; 6525a1b1f3SPeter Holm snprintf(dir, sizeof(dir), "%d", i); 6625a1b1f3SPeter Holm if (rmdir(dir) == -1) 6725a1b1f3SPeter Holm err(1, "rmdir(%s)", dir); 6825a1b1f3SPeter Holm snprintf(dir, sizeof(dir), "%s", "a"); 6925a1b1f3SPeter Holm if (mkdir(dir, 0700) == -1) 7025a1b1f3SPeter Holm err(1, "mkdir(%s)", dir); 7125a1b1f3SPeter Holm 7225a1b1f3SPeter Holm return (0); 7325a1b1f3SPeter Holm} 7425a1b1f3SPeter HolmEOF 7525a1b1f3SPeter Holmmycc -o /tmp/nlink -Wall -Wextra -O2 /tmp/nlink.c || exit 1 7625a1b1f3SPeter Holmrm /tmp/nlink.c 7725a1b1f3SPeter Holm 7825a1b1f3SPeter Holmset -e 7925a1b1f3SPeter Holmhere=`pwd` 8025a1b1f3SPeter Holmmount | grep -q "on $mntpoint " && umount -f $mntpoint 8125a1b1f3SPeter Holmmdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart 8225a1b1f3SPeter Holmmdconfig -a -t swap -s 1g -u $mdstart 8325a1b1f3SPeter Holmnewfs -Un /dev/md$mdstart > /dev/null 8425a1b1f3SPeter Holmmount /dev/md$mdstart $mntpoint 8525a1b1f3SPeter Holmset +e 8625a1b1f3SPeter Holm 8725a1b1f3SPeter Holmcd $mntpoint 8825a1b1f3SPeter Holm/tmp/nlink; s=$? 8925a1b1f3SPeter Holmn=`ls -a | wc -l` 9025a1b1f3SPeter Holm[ $s -ne 0 ] && echo "$n dirs" 9125a1b1f3SPeter Holmcd $here 9225a1b1f3SPeter Holm 9325a1b1f3SPeter Holmumount $mntpoint 9425a1b1f3SPeter Holmmdconfig -d -u $mdstart 9525a1b1f3SPeter Holmrm /tmp/nlink 9625a1b1f3SPeter Holmexit $s 97