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
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2018 Huawei. All Rights Reserved.
#
# FS QA Test No. 045
#
# Test fsck.overlay how to deal with whiteouts in overlayfs.
#
. ./common/preamble
_begin_fstest auto quick fsck
# Import common functions.
. ./common/filter
. ./common/attr
# real QA test starts here
_supported_fs overlay
_require_scratch_nocheck
_require_attrs trusted
_require_command "$FSCK_OVERLAY_PROG" fsck.overlay
OVL_XATTR_OPAQUE_VAL=y
OVL_XATTR_IMPURE_VAL=y
# remove all files from previous tests
_scratch_mkfs
# Check whiteout
check_whiteout()
{
for arg in $*; do
local ttype=`stat -c "%F:%t,%T" $arg`
[[ "$ttype" == "character special file:0,0" ]] || \
echo "Valid whiteout removed incorrectly"
done
}
# Create a whiteout
make_whiteout()
{
for arg in $*; do
mknod $arg c 0 0
done
}
# Create an opaque directory
make_opaque_dir()
{
local target=$1
mkdir -p $target
$SETFATTR_PROG -n $OVL_XATTR_OPAQUE -v $OVL_XATTR_OPAQUE_VAL $target
}
# Create impure directories
make_impure_dir()
{
for dir in $*; do
mkdir -p $dir
$SETFATTR_PROG -n $OVL_XATTR_IMPURE -v $OVL_XATTR_IMPURE_VAL $dir
done
}
# Create a redirect directory
make_redirect_dir()
{
local target=$1
local value=$2
mkdir -p $target
$SETFATTR_PROG -n $OVL_XATTR_REDIRECT -v $value $target
}
# Create test directories
lowerdir=$OVL_BASE_SCRATCH_MNT/lower
lowerdir2=$OVL_BASE_SCRATCH_MNT/lower2
upperdir=$OVL_BASE_SCRATCH_MNT/upper
workdir=$OVL_BASE_SCRATCH_MNT/workdir
make_test_dirs()
{
rm -rf $lowerdir $lowerdir2 $upperdir $workdir
mkdir -p $lowerdir $lowerdir2 $upperdir $workdir
}
# Test orphan whiteout in lower and upper layer, should remove
echo "+ Orphan whiteout"
make_test_dirs
make_whiteout $lowerdir/foo $upperdir/{foo,bar}
_overlay_fsck_expect $FSCK_NONDESTRUCT $lowerdir $upperdir $workdir -p
ls $lowerdir
ls $upperdir
# Test valid whiteout covering lower target, should not remove
echo "+ Valid whiteout"
make_test_dirs
touch $lowerdir2/{foo,bar}
make_whiteout $upperdir/foo $lowerdir/bar
_overlay_fsck_expect $FSCK_OK "$lowerdir:$lowerdir2" $upperdir $workdir -p
check_whiteout $upperdir/foo $lowerdir/bar
# Test orphan whiteout in opaque directory, should remove
echo "+ Orphan whiteout(2)"
make_test_dirs
mkdir $lowerdir/testdir
touch $lowerdir/testdir/foo
make_opaque_dir $upperdir/testdir
make_whiteout $upperdir/testdir/foo
_overlay_fsck_expect $FSCK_NONDESTRUCT $lowerdir $upperdir $workdir -p
ls $upperdir/testdir
# Test orphan whiteout whose parent path is not an merged directory,
# should remove
echo "+ Orphan whiteout(3)"
make_test_dirs
mkdir $lowerdir2/{testdir1,testdir2,testdir3}
touch $lowerdir2/{testdir1/foo,testdir2/foo,testdir3/foo}
mkdir $upperdir/{testdir1,testdir2,testdir3,testdir4}
touch $lowerdir/testdir1
make_whiteout $lowerdir/testdir2
make_opaque_dir $lowerdir/testdir3
make_whiteout $upperdir/{testdir1/foo,/testdir2/foo,testdir3/foo,testdir4/foo}
_overlay_fsck_expect $FSCK_NONDESTRUCT "$lowerdir:$lowerdir2" $upperdir $workdir -p
ls $upperdir/testdir1
ls $upperdir/testdir2
ls $upperdir/testdir3
ls $upperdir/testdir4
# Test orphan whiteout in redirect directory, should remove
echo "+ Orphan whiteout(4)"
make_test_dirs
mkdir $lowerdir/{testdir,origin}
touch $lowerdir/testdir/foo
make_redirect_dir $upperdir/testdir "origin"
make_whiteout $upperdir/testdir/foo
_overlay_fsck_expect $FSCK_NONDESTRUCT $lowerdir $upperdir $workdir -p
ls $upperdir/testdir
# Test valid whiteout in redirect directory cover file in lower
# redirect origin directory, should not remove
echo "+ Valid whiteout(2)"
make_test_dirs
mkdir $lowerdir/origin
touch $lowerdir/origin/foo
make_impure_dir $upperdir
make_redirect_dir $upperdir/testdir "origin"
make_whiteout $upperdir/origin $upperdir/testdir/foo
_overlay_fsck_expect $FSCK_OK $lowerdir $upperdir $workdir -p
check_whiteout $upperdir/testdir/foo
# Test valid whiteout covering lower target whose parent directory
# merge with a redirect directory in the middle layer, should not remove.
echo "+ Valid whiteout(3)"
make_test_dirs
mkdir -p $lowerdir2/origin/subdir
touch $lowerdir2/origin/subdir/foo
make_redirect_dir $lowerdir/testdir "origin"
mkdir -p $upperdir/testdir/subdir
make_whiteout $lowerdir/origin $upperdir/testdir/subdir/foo
make_impure_dir $upperdir/testdir $upperdir
_overlay_fsck_expect $FSCK_OK "$lowerdir:$lowerdir2" $upperdir $workdir -p
check_whiteout $upperdir/testdir/subdir/foo
# Test invalid whiteout in opaque subdirectory in a redirect directory,
# should remove
echo "+ Orphan whiteout(5)"
make_test_dirs
mkdir -p $lowerdir/origin/subdir
touch $lowerdir/origin/subdir/foo
make_redirect_dir $upperdir/testdir "origin"
make_opaque_dir $upperdir/testdir/subdir
make_whiteout $upperdir/testdir/subdir/foo
_overlay_fsck_expect $FSCK_NONDESTRUCT $lowerdir $upperdir $workdir -p
ls $upperdir/testdir/subdir
# Test valid whiteout in reidrect subdirectory in a opaque directory
# covering lower target, should not remove
echo "+ Valid whiteout(4)"
make_test_dirs
mkdir $lowerdir/origin
touch $lowerdir/origin/foo
make_opaque_dir $upperdir/testdir
make_redirect_dir $upperdir/testdir/subdir "/origin"
make_whiteout $upperdir/origin $upperdir/testdir/subdir/foo
make_impure_dir $upperdir/testdir
_overlay_fsck_expect $FSCK_OK $lowerdir $upperdir $workdir -p
check_whiteout $upperdir/testdir/subdir/foo
# success, all done
status=0
exit
|
