1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
#!/bin/sh
#
# SPDX-License-Identifier: BSD-2-Clause
#
# 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
UFS_LINK_MAX=`grep UFS_LINK_MAX /usr/include/ufs/ufs/dinode.h 2>/dev/null`
[ -z "$UFS_LINK_MAX" ] && exit 0
UFS_LINK_MAX=`echo $UFS_LINK_MAX | awk '{print $3}'`
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;
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 $((UFS_LINK_MAX - 1)) ] && s=2
cd $here
umount $mntpoint
mdconfig -d -u $mdstart
rm /tmp/nlink5
exit $s
|
