multi-pack-index: verify bad header
[git/git.git] / t / t5319-multi-pack-index.sh
... / ...
CommitLineData
1#!/bin/sh
2
3test_description='multi-pack-indexes'
4. ./test-lib.sh
5
6objdir=.git/objects
7
8midx_read_expect () {
9 NUM_PACKS=$1
10 NUM_OBJECTS=$2
11 NUM_CHUNKS=$3
12 OBJECT_DIR=$4
13 EXTRA_CHUNKS="$5"
14 {
15 cat <<-EOF &&
16 header: 4d494458 1 $NUM_CHUNKS $NUM_PACKS
17 chunks: pack-names oid-fanout oid-lookup object-offsets$EXTRA_CHUNKS
18 num_objects: $NUM_OBJECTS
19 packs:
20 EOF
21 if test $NUM_PACKS -ge 1
22 then
23 ls $OBJECT_DIR/pack/ | grep idx | sort
24 fi &&
25 printf "object-dir: $OBJECT_DIR\n"
26 } >expect &&
27 test-tool read-midx $OBJECT_DIR >actual &&
28 test_cmp expect actual
29}
30
31test_expect_success 'write midx with no packs' '
32 test_when_finished rm -f pack/multi-pack-index &&
33 git multi-pack-index --object-dir=. write &&
34 midx_read_expect 0 0 4 .
35'
36
37generate_objects () {
38 i=$1
39 iii=$(printf '%03i' $i)
40 {
41 test-tool genrandom "bar" 200 &&
42 test-tool genrandom "baz $iii" 50
43 } >wide_delta_$iii &&
44 {
45 test-tool genrandom "foo"$i 100 &&
46 test-tool genrandom "foo"$(( $i + 1 )) 100 &&
47 test-tool genrandom "foo"$(( $i + 2 )) 100
48 } >deep_delta_$iii &&
49 {
50 echo $iii &&
51 test-tool genrandom "$iii" 8192
52 } >file_$iii &&
53 git update-index --add file_$iii deep_delta_$iii wide_delta_$iii
54}
55
56commit_and_list_objects () {
57 {
58 echo 101 &&
59 test-tool genrandom 100 8192;
60 } >file_101 &&
61 git update-index --add file_101 &&
62 tree=$(git write-tree) &&
63 commit=$(git commit-tree $tree -p HEAD</dev/null) &&
64 {
65 echo $tree &&
66 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
67 } >obj-list &&
68 git reset --hard $commit
69}
70
71test_expect_success 'create objects' '
72 test_commit initial &&
73 for i in $(test_seq 1 5)
74 do
75 generate_objects $i
76 done &&
77 commit_and_list_objects
78'
79
80test_expect_success 'write midx with one v1 pack' '
81 pack=$(git pack-objects --index-version=1 $objdir/pack/test <obj-list) &&
82 test_when_finished rm $objdir/pack/test-$pack.pack \
83 $objdir/pack/test-$pack.idx $objdir/pack/multi-pack-index &&
84 git multi-pack-index --object-dir=$objdir write &&
85 midx_read_expect 1 18 4 $objdir
86'
87
88midx_git_two_modes () {
89 if [ "$2" = "sorted" ]
90 then
91 git -c core.multiPackIndex=false $1 | sort >expect &&
92 git -c core.multiPackIndex=true $1 | sort >actual
93 else
94 git -c core.multiPackIndex=false $1 >expect &&
95 git -c core.multiPackIndex=true $1 >actual
96 fi &&
97 test_cmp expect actual
98}
99
100compare_results_with_midx () {
101 MSG=$1
102 test_expect_success "check normal git operations: $MSG" '
103 midx_git_two_modes "rev-list --objects --all" &&
104 midx_git_two_modes "log --raw" &&
105 midx_git_two_modes "count-objects --verbose" &&
106 midx_git_two_modes "cat-file --batch-all-objects --buffer --batch-check" &&
107 midx_git_two_modes "cat-file --batch-all-objects --buffer --batch-check --unsorted" sorted
108 '
109}
110
111test_expect_success 'write midx with one v2 pack' '
112 git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
113 git multi-pack-index --object-dir=$objdir write &&
114 midx_read_expect 1 18 4 $objdir
115'
116
117compare_results_with_midx "one v2 pack"
118
119test_expect_success 'add more objects' '
120 for i in $(test_seq 6 10)
121 do
122 generate_objects $i
123 done &&
124 commit_and_list_objects
125'
126
127test_expect_success 'write midx with two packs' '
128 git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
129 git multi-pack-index --object-dir=$objdir write &&
130 midx_read_expect 2 34 4 $objdir
131'
132
133compare_results_with_midx "two packs"
134
135test_expect_success 'add more packs' '
136 for j in $(test_seq 11 20)
137 do
138 generate_objects $j &&
139 commit_and_list_objects &&
140 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
141 done
142'
143
144compare_results_with_midx "mixed mode (two packs + extra)"
145
146test_expect_success 'write midx with twelve packs' '
147 git multi-pack-index --object-dir=$objdir write &&
148 midx_read_expect 12 74 4 $objdir
149'
150
151compare_results_with_midx "twelve packs"
152
153test_expect_success 'verify multi-pack-index success' '
154 git multi-pack-index verify --object-dir=$objdir
155'
156
157# usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
158corrupt_midx_and_verify() {
159 POS=$1 &&
160 DATA="${2:-\0}" &&
161 OBJDIR=$3 &&
162 GREPSTR="$4" &&
163 FILE=$OBJDIR/pack/multi-pack-index &&
164 chmod a+w $FILE &&
165 test_when_finished mv midx-backup $FILE &&
166 cp $FILE midx-backup &&
167 printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
168 test_must_fail git multi-pack-index verify --object-dir=$OBJDIR 2>test_err &&
169 grep -v "^+" test_err >err &&
170 test_i18ngrep "$GREPSTR" err
171}
172
173test_expect_success 'verify bad signature' '
174 corrupt_midx_and_verify 0 "\00" $objdir \
175 "multi-pack-index signature"
176'
177
178MIDX_BYTE_VERSION=4
179MIDX_BYTE_OID_VERSION=5
180MIDX_BYTE_CHUNK_COUNT=6
181
182test_expect_success 'verify bad version' '
183 corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
184 "multi-pack-index version"
185'
186
187test_expect_success 'verify bad OID version' '
188 corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
189 "hash version"
190'
191
192test_expect_success 'verify truncated chunk count' '
193 corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
194 "missing required"
195'
196
197test_expect_success 'verify extended chunk count' '
198 corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
199 "terminating multi-pack-index chunk id appears earlier than expected"
200'
201
202test_expect_success 'repack removes multi-pack-index' '
203 test_path_is_file $objdir/pack/multi-pack-index &&
204 git repack -adf &&
205 test_path_is_missing $objdir/pack/multi-pack-index
206'
207
208compare_results_with_midx "after repack"
209
210test_expect_success 'multi-pack-index and pack-bitmap' '
211 git -c repack.writeBitmaps=true repack -ad &&
212 git multi-pack-index write &&
213 git rev-list --test-bitmap HEAD
214'
215
216test_expect_success 'multi-pack-index and alternates' '
217 git init --bare alt.git &&
218 echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
219 echo content1 >file1 &&
220 altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
221 git cat-file blob $altblob &&
222 git rev-list --all
223'
224
225compare_results_with_midx "with alternate (local midx)"
226
227test_expect_success 'multi-pack-index in an alternate' '
228 mv .git/objects/pack/* alt.git/objects/pack &&
229 test_commit add_local_objects &&
230 git repack --local &&
231 git multi-pack-index write &&
232 midx_read_expect 1 3 4 $objdir &&
233 git reset --hard HEAD~1 &&
234 rm -f .git/objects/pack/*
235'
236
237compare_results_with_midx "with alternate (remote midx)"
238
239# usage: corrupt_data <file> <pos> [<data>]
240corrupt_data () {
241 file=$1
242 pos=$2
243 data="${3:-\0}"
244 printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
245}
246
247# Force 64-bit offsets by manipulating the idx file.
248# This makes the IDX file _incorrect_ so be careful to clean up after!
249test_expect_success 'force some 64-bit offsets with pack-objects' '
250 mkdir objects64 &&
251 mkdir objects64/pack &&
252 for i in $(test_seq 1 11)
253 do
254 generate_objects 11
255 done &&
256 commit_and_list_objects &&
257 pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
258 idx64=objects64/pack/test-64-$pack64.idx &&
259 chmod u+w $idx64 &&
260 corrupt_data $idx64 2999 "\02" &&
261 midx64=$(git multi-pack-index --object-dir=objects64 write) &&
262 midx_read_expect 1 63 5 objects64 " large-offsets"
263'
264
265test_expect_success 'verify multi-pack-index with 64-bit offsets' '
266 git multi-pack-index verify --object-dir=objects64
267'
268
269test_done