/
t5302-pack-index.sh
executable file
·225 lines (194 loc) · 8 KB
/
t5302-pack-index.sh
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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
#!/bin/sh
#
# Copyright (c) 2007 Nicolas Pitre
#
test_description='pack index with 64-bit offsets and object CRC'
. ./test-lib.sh
test_expect_success \
'setup' \
'rm -rf .git
git init &&
git config pack.threads 1 &&
i=1 &&
while test $i -le 100
do
iii=`printf '%03i' $i`
test-genrandom "bar" 200 > wide_delta_$iii &&
test-genrandom "baz $iii" 50 >> wide_delta_$iii &&
test-genrandom "foo"$i 100 > deep_delta_$iii &&
test-genrandom "foo"`expr $i + 1` 100 >> deep_delta_$iii &&
test-genrandom "foo"`expr $i + 2` 100 >> deep_delta_$iii &&
echo $iii >file_$iii &&
test-genrandom "$iii" 8192 >>file_$iii &&
git update-index --add file_$iii deep_delta_$iii wide_delta_$iii &&
i=`expr $i + 1` || return 1
done &&
{ echo 101 && test-genrandom 100 8192; } >file_101 &&
git update-index --add file_101 &&
tree=`git write-tree` &&
commit=`git commit-tree $tree </dev/null` && {
echo $tree &&
git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
} >obj-list &&
git update-ref HEAD $commit'
test_expect_success \
'pack-objects with index version 1' \
'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
git verify-pack -v "test-1-${pack1}.pack"'
test_expect_success \
'pack-objects with index version 2' \
'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
git verify-pack -v "test-2-${pack2}.pack"'
test_expect_success \
'both packs should be identical' \
'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
test_expect_success \
'index v1 and index v2 should be different' \
'! cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
test_expect_success \
'index-pack with index version 1' \
'git index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
test_expect_success \
'index-pack with index version 2' \
'git index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
test_expect_success \
'index-pack results should match pack-objects ones' \
'cmp "test-1-${pack1}.idx" "1.idx" &&
cmp "test-2-${pack2}.idx" "2.idx"'
test_expect_success \
'index v2: force some 64-bit offsets with pack-objects' \
'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list)'
if msg=$(git verify-pack -v "test-3-${pack3}.pack" 2>&1) ||
! (echo "$msg" | grep "pack too large .* off_t")
then
test_set_prereq OFF64_T
else
say "skipping tests concerning 64-bit offsets"
fi
test_expect_success OFF64_T \
'index v2: verify a pack with some 64-bit offsets' \
'git verify-pack -v "test-3-${pack3}.pack"'
test_expect_success OFF64_T \
'64-bit offsets: should be different from previous index v2 results' \
'! cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
test_expect_success OFF64_T \
'index v2: force some 64-bit offsets with index-pack' \
'git index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
test_expect_success OFF64_T \
'64-bit offsets: index-pack result should match pack-objects one' \
'cmp "test-3-${pack3}.idx" "3.idx"'
# returns the object number for given object in given pack index
index_obj_nr()
{
idx_file=$1
object_sha1=$2
nr=0
git show-index < $idx_file |
while read offs sha1 extra
do
nr=$(($nr + 1))
test "$sha1" = "$object_sha1" || continue
echo "$(($nr - 1))"
break
done
}
# returns the pack offset for given object as found in given pack index
index_obj_offset()
{
idx_file=$1
object_sha1=$2
git show-index < $idx_file | grep $object_sha1 |
( read offs extra && echo "$offs" )
}
test_expect_success \
'[index v1] 1) stream pack to repository' \
'git index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
git prune-packed &&
git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
cmp "test-1-${pack1}.idx" ".git/objects/pack/pack-${pack1}.idx"'
test_expect_success \
'[index v1] 2) create a stealth corruption in a delta base reference' \
'# This test assumes file_101 is a delta smaller than 16 bytes.
# It should be against file_100 but we substitute its base for file_099
sha1_101=`git hash-object file_101` &&
sha1_099=`git hash-object file_099` &&
offs_101=`index_obj_offset 1.idx $sha1_101` &&
nr_099=`index_obj_nr 1.idx $sha1_099` &&
chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" \
skip=$((4 + 256 * 4 + $nr_099 * 24)) \
bs=1 count=20 conv=notrunc &&
git cat-file blob $sha1_101 > file_101_foo1'
test_expect_success \
'[index v1] 3) corrupted delta happily returned wrong data' \
'test -f file_101_foo1 && ! cmp file_101 file_101_foo1'
test_expect_success \
'[index v1] 4) confirm that the pack is actually corrupted' \
'test_must_fail git fsck --full $commit'
test_expect_success \
'[index v1] 5) pack-objects happily reuses corrupted data' \
'pack4=$(git pack-objects test-4 <obj-list) &&
test -f "test-4-${pack1}.pack"'
test_expect_success \
'[index v1] 6) newly created pack is BAD !' \
'test_must_fail git verify-pack -v "test-4-${pack1}.pack"'
test_expect_success \
'[index v2] 1) stream pack to repository' \
'rm -f .git/objects/pack/* &&
git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
git prune-packed &&
git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
cmp "test-2-${pack1}.idx" ".git/objects/pack/pack-${pack1}.idx"'
test_expect_success \
'[index v2] 2) create a stealth corruption in a delta base reference' \
'# This test assumes file_101 is a delta smaller than 16 bytes.
# It should be against file_100 but we substitute its base for file_099
sha1_101=`git hash-object file_101` &&
sha1_099=`git hash-object file_099` &&
offs_101=`index_obj_offset 1.idx $sha1_101` &&
nr_099=`index_obj_nr 1.idx $sha1_099` &&
chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" \
skip=$((8 + 256 * 4 + $nr_099 * 20)) \
bs=1 count=20 conv=notrunc &&
git cat-file blob $sha1_101 > file_101_foo2'
test_expect_success \
'[index v2] 3) corrupted delta happily returned wrong data' \
'test -f file_101_foo2 && ! cmp file_101 file_101_foo2'
test_expect_success \
'[index v2] 4) confirm that the pack is actually corrupted' \
'test_must_fail git fsck --full $commit'
test_expect_success \
'[index v2] 5) pack-objects refuses to reuse corrupted data' \
'test_must_fail git pack-objects test-5 <obj-list &&
test_must_fail git pack-objects --no-reuse-object test-6 <obj-list'
test_expect_success \
'[index v2] 6) verify-pack detects CRC mismatch' \
'rm -f .git/objects/pack/* &&
git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
git verify-pack ".git/objects/pack/pack-${pack1}.pack" &&
obj=`git hash-object file_001` &&
nr=`index_obj_nr ".git/objects/pack/pack-${pack1}.idx" $obj` &&
chmod +w ".git/objects/pack/pack-${pack1}.idx" &&
printf xxxx | dd of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
bs=1 count=4 seek=$((8 + 256 * 4 + `wc -l <obj-list` * 20 + $nr * 4)) &&
( while read obj
do git cat-file -p $obj >/dev/null || exit 1
done <obj-list ) &&
err=$(test_must_fail git verify-pack \
".git/objects/pack/pack-${pack1}.pack" 2>&1) &&
echo "$err" | grep "CRC mismatch"'
test_expect_success 'running index-pack in the object store' '
rm -f .git/objects/pack/* &&
cp test-1-${pack1}.pack .git/objects/pack/pack-${pack1}.pack &&
(
cd .git/objects/pack
git index-pack pack-${pack1}.pack
) &&
test -f .git/objects/pack/pack-${pack1}.idx
'
test_done