1#!/bin/sh 2# 3# SPDX-License-Identifier: BSD-2-Clause 4# 5# Copyright (c) 2022 Peter Holm <pho@FreeBSD.org> 6# 7# Redistribution and use in source and binary forms, with or without 8# modification, are permitted provided that the following conditions 9# are met: 10# 1. Redistributions of source code must retain the above copyright 11# notice, this list of conditions and the following disclaimer. 12# 2. Redistributions in binary form must reproduce the above copyright 13# notice, this list of conditions and the following disclaimer in the 14# documentation and/or other materials provided with the distribution. 15# 16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26# SUCH DAMAGE. 27# 28 29# https://reviews.freebsd.org/D35514 30# Rename dir a/b to c/d 31 32# Test scenario suggestion by kib 33 34. ../default.cfg 35 36cat > /tmp/nlink5.c <<EOF 37#include <sys/stat.h> 38#include <ufs/ufs/dinode.h> 39#include <err.h> 40#include <errno.h> 41#include <stdio.h> 42#include <unistd.h> 43 44int 45main (void) { 46 int i, mx; 47 char dir[100]; 48 49 mx = UFS_LINK_MAX - 2; /* UFS_LINK_MAX = 32767 */ 50 for (i = 0; i < mx; i++) { 51 snprintf(dir, sizeof(dir), "%d", i); 52 if (mkdir(dir, 0700) == -1) 53 err(1, "mkdir(%s)", dir); 54 } 55 56 /* The following mkdir(2) must fail */ 57 i = mx; 58 snprintf(dir, sizeof(dir), "%d", i); 59 if (mkdir(dir, 0700) != -1) /* this must fail */ 60 err(1, "mkdir(%s)", dir); 61 if (errno != EMLINK) 62 err(1, "Must fail: mkdir(%s)", dir); 63 64 /* Must succeed */ 65 i = 0; 66 snprintf(dir, sizeof(dir), "%d", i); 67 if (rmdir(dir) == -1) 68 err(1, "rmdir(%s)", dir); 69 snprintf(dir, sizeof(dir), "%s", "x"); 70 if (mkdir(dir, 0700) == -1) 71 err(1, "mkdir(%s)", dir); 72 73 /* Make room for two top level directories */ 74 if (rmdir("1") == -1) 75 err(1, "rmdir(1)"); 76 if (rmdir("2") == -1) 77 err(1, "rmdir(2)"); 78 79 /* mkdir a c */ 80 snprintf(dir, sizeof(dir), "%s", "a"); 81 if (mkdir(dir, 0700) == -1) 82 err(1, "mkdir(%s)", dir); 83 snprintf(dir, sizeof(dir), "%s", "c"); 84 if (mkdir(dir, 0700) == -1) 85 err(1, "mkdir(%s)", dir); 86 87 /* mkdir a/b */ 88 snprintf(dir, sizeof(dir), "%s/%s", "a", "b"); 89 if (mkdir(dir, 0700) == -1) 90 err(1, "mkdir(%s)", dir); 91 92 /* mv a/b c/d */ 93 if (rename("a/b", "c/d") == -1) 94 err(1, "rename(a/b, c/d)"); 95 96 return (0); 97} 98EOF 99mycc -o /tmp/nlink5 -Wall -Wextra -O2 /tmp/nlink5.c || exit 1 100rm /tmp/nlink5.c 101 102set -e 103here=`pwd` 104mount | grep -q "on $mntpoint " && umount -f $mntpoint 105mdconfig -l | grep "md$mdstart " && mdconfig -d -u $mdstart 106mdconfig -a -t swap -s 1g -u $mdstart 107newfs -Un /dev/md$mdstart > /dev/null 108mount /dev/md$mdstart $mntpoint 109set +e 110 111cd $mntpoint 112/tmp/nlink5; s=$? 113n=`find . -type d -maxdepth 1 | wc -l` 114[ $n -ne 32766 ] && s=2 115cd $here 116 117umount $mntpoint 118mdconfig -d -u $mdstart 119rm /tmp/nlink5 120exit $s 121