t/t5319-multi-pack-index.sh

   1 #!/bin/sh
   2
   3 test_description='multi-pack-indexes'
   4 . ./test-lib.sh
   5
   6 objdir=.git/objects
   7
   8 midx_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
  31 test_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
  37 generate_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
  56 commit_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
  71 test_expect_success 'create objects' '
  72         test_commit initial &&
  73         for i in $(test_seq 1 5)
  74         do
  75                 generate_objects $i
  76         done &&
  77         commit_and_list_objects
  78 '
  79
  80 test_expect_success 'write midx with one v1 pack' '
  81         pack=$(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
  88 midx_git_two_modes () {
  89         git -c core.multiPackIndex=false $1 >expect &&
  90         git -c core.multiPackIndex=true $1 >actual &&
  91         if [ "$2" = "sorted" ]
  92         then
  93                 sort <expect >expect.sorted &&
  94                 mv expect.sorted expect &&
  95                 sort <actual >actual.sorted &&
  96                 mv actual.sorted actual
  97         fi &&
  98         test_cmp expect actual
  99 }
 100
 101 compare_results_with_midx () {
 102         MSG=$1
 103         test_expect_success "check normal git operations: $MSG" '
 104                 midx_git_two_modes "rev-list --objects --all" &&
 105                 midx_git_two_modes "log --raw" &&
 106                 midx_git_two_modes "count-objects --verbose" &&
 107                 midx_git_two_modes "cat-file --batch-all-objects --batch-check" &&
 108                 midx_git_two_modes "cat-file --batch-all-objects --batch-check --unordered" sorted
 109         '
 110 }
 111
 112 test_expect_success 'write midx with one v2 pack' '
 113         git pack-objects --index-version=2,0x40 $objdir/pack/test <obj-list &&
 114         git multi-pack-index --object-dir=$objdir write &&
 115         midx_read_expect 1 18 4 $objdir
 116 '
 117
 118 compare_results_with_midx "one v2 pack"
 119
 120 test_expect_success 'corrupt idx not opened' '
 121         idx=$(test-tool read-midx $objdir | grep "\.idx\$") &&
 122         mv $objdir/pack/$idx backup-$idx &&
 123         test_when_finished "mv backup-\$idx \$objdir/pack/\$idx" &&
 124
 125         # This is the minimum size for a sha-1 based .idx; this lets
 126         # us pass perfunctory tests, but anything that actually opens and reads
 127         # the idx file will complain.
 128         test_copy_bytes 1064 <backup-$idx >$objdir/pack/$idx &&
 129
 130         git -c core.multiPackIndex=true rev-list --objects --all 2>err &&
 131         test_must_be_empty err
 132 '
 133
 134 test_expect_success 'add more objects' '
 135         for i in $(test_seq 6 10)
 136         do
 137                 generate_objects $i
 138         done &&
 139         commit_and_list_objects
 140 '
 141
 142 test_expect_success 'write midx with two packs' '
 143         git pack-objects --index-version=1 $objdir/pack/test-2 <obj-list &&
 144         git multi-pack-index --object-dir=$objdir write &&
 145         midx_read_expect 2 34 4 $objdir
 146 '
 147
 148 compare_results_with_midx "two packs"
 149
 150 test_expect_success 'add more packs' '
 151         for j in $(test_seq 11 20)
 152         do
 153                 generate_objects $j &&
 154                 commit_and_list_objects &&
 155                 git pack-objects --index-version=2 $objdir/pack/test-pack <obj-list
 156         done
 157 '
 158
 159 compare_results_with_midx "mixed mode (two packs + extra)"
 160
 161 test_expect_success 'write midx with twelve packs' '
 162         git multi-pack-index --object-dir=$objdir write &&
 163         midx_read_expect 12 74 4 $objdir
 164 '
 165
 166 compare_results_with_midx "twelve packs"
 167
 168 test_expect_success 'verify multi-pack-index success' '
 169         git multi-pack-index verify --object-dir=$objdir
 170 '
 171
 172 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 173 corrupt_midx_and_verify() {
 174         POS=$1 &&
 175         DATA="${2:-\0}" &&
 176         OBJDIR=$3 &&
 177         GREPSTR="$4" &&
 178         COMMAND="$5" &&
 179         if test -z "$COMMAND"
 180         then
 181                 COMMAND="git multi-pack-index verify --object-dir=$OBJDIR"
 182         fi &&
 183         FILE=$OBJDIR/pack/multi-pack-index &&
 184         chmod a+w $FILE &&
 185         test_when_finished mv midx-backup $FILE &&
 186         cp $FILE midx-backup &&
 187         printf "$DATA" | dd of="$FILE" bs=1 seek="$POS" conv=notrunc &&
 188         test_must_fail $COMMAND 2>test_err &&
 189         grep -v "^+" test_err >err &&
 190         test_i18ngrep "$GREPSTR" err
 191 }
 192
 193 test_expect_success 'verify bad signature' '
 194         corrupt_midx_and_verify 0 "\00" $objdir \
 195                 "multi-pack-index signature"
 196 '
 197
 198 HASH_LEN=20
 199 NUM_OBJECTS=74
 200 MIDX_BYTE_VERSION=4
 201 MIDX_BYTE_OID_VERSION=5
 202 MIDX_BYTE_CHUNK_COUNT=6
 203 MIDX_HEADER_SIZE=12
 204 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 205 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 206 MIDX_NUM_CHUNKS=5
 207 MIDX_CHUNK_LOOKUP_WIDTH=12
 208 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 209                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 210 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 211 MIDX_OFFSET_OID_FANOUT=$(($MIDX_OFFSET_PACKNAMES + 652))
 212 MIDX_OID_FANOUT_WIDTH=4
 213 MIDX_BYTE_OID_FANOUT_ORDER=$((MIDX_OFFSET_OID_FANOUT + 250 * $MIDX_OID_FANOUT_WIDTH + 1))
 214 MIDX_OFFSET_OID_LOOKUP=$(($MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 215 MIDX_BYTE_OID_LOOKUP=$(($MIDX_OFFSET_OID_LOOKUP + 16 * $HASH_LEN))
 216 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 217 MIDX_OFFSET_WIDTH=8
 218 MIDX_BYTE_PACK_INT_ID=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 2))
 219 MIDX_BYTE_OFFSET=$(($MIDX_OFFSET_OBJECT_OFFSETS + 16 * $MIDX_OFFSET_WIDTH + 6))
 220
 221 test_expect_success 'verify bad version' '
 222         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 223                 "multi-pack-index version"
 224 '
 225
 226 test_expect_success 'verify bad OID version' '
 227         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
 228                 "hash version"
 229 '
 230
 231 test_expect_success 'verify truncated chunk count' '
 232         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 233                 "missing required"
 234 '
 235
 236 test_expect_success 'verify extended chunk count' '
 237         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 238                 "terminating multi-pack-index chunk id appears earlier than expected"
 239 '
 240
 241 test_expect_success 'verify missing required chunk' '
 242         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 243                 "missing required"
 244 '
 245
 246 test_expect_success 'verify invalid chunk offset' '
 247         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 248                 "invalid chunk offset (too large)"
 249 '
 250
 251 test_expect_success 'verify packnames out of order' '
 252         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 253                 "pack names out of order"
 254 '
 255
 256 test_expect_success 'verify packnames out of order' '
 257         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 258                 "failed to load pack"
 259 '
 260
 261 test_expect_success 'verify oid fanout out of order' '
 262         corrupt_midx_and_verify $MIDX_BYTE_OID_FANOUT_ORDER "\01" $objdir \
 263                 "oid fanout out of order"
 264 '
 265
 266 test_expect_success 'verify oid lookup out of order' '
 267         corrupt_midx_and_verify $MIDX_BYTE_OID_LOOKUP "\00" $objdir \
 268                 "oid lookup out of order"
 269 '
 270
 271 test_expect_success 'verify incorrect pack-int-id' '
 272         corrupt_midx_and_verify $MIDX_BYTE_PACK_INT_ID "\07" $objdir \
 273                 "bad pack-int-id"
 274 '
 275
 276 test_expect_success 'verify incorrect offset' '
 277         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
 278                 "incorrect object offset"
 279 '
 280
 281 test_expect_success 'git-fsck incorrect offset' '
 282         corrupt_midx_and_verify $MIDX_BYTE_OFFSET "\07" $objdir \
 283                 "incorrect object offset" \
 284                 "git -c core.multipackindex=true fsck"
 285 '
 286
 287 test_expect_success 'repack removes multi-pack-index' '
 288         test_path_is_file $objdir/pack/multi-pack-index &&
 289         GIT_TEST_MULTI_PACK_INDEX=0 git repack -adf &&
 290         test_path_is_missing $objdir/pack/multi-pack-index
 291 '
 292
 293 compare_results_with_midx "after repack"
 294
 295 test_expect_success 'multi-pack-index and pack-bitmap' '
 296         git -c repack.writeBitmaps=true repack -ad &&
 297         git multi-pack-index write &&
 298         git rev-list --test-bitmap HEAD
 299 '
 300
 301 test_expect_success 'multi-pack-index and alternates' '
 302         git init --bare alt.git &&
 303         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 304         echo content1 >file1 &&
 305         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 306         git cat-file blob $altblob &&
 307         git rev-list --all
 308 '
 309
 310 compare_results_with_midx "with alternate (local midx)"
 311
 312 test_expect_success 'multi-pack-index in an alternate' '
 313         mv .git/objects/pack/* alt.git/objects/pack &&
 314         test_commit add_local_objects &&
 315         git repack --local &&
 316         git multi-pack-index write &&
 317         midx_read_expect 1 3 4 $objdir &&
 318         git reset --hard HEAD~1 &&
 319         rm -f .git/objects/pack/*
 320 '
 321
 322 compare_results_with_midx "with alternate (remote midx)"
 323
 324 # usage: corrupt_data <file> <pos> [<data>]
 325 corrupt_data () {
 326         file=$1
 327         pos=$2
 328         data="${3:-\0}"
 329         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 330 }
 331
 332 # Force 64-bit offsets by manipulating the idx file.
 333 # This makes the IDX file _incorrect_ so be careful to clean up after!
 334 test_expect_success 'force some 64-bit offsets with pack-objects' '
 335         mkdir objects64 &&
 336         mkdir objects64/pack &&
 337         for i in $(test_seq 1 11)
 338         do
 339                 generate_objects 11
 340         done &&
 341         commit_and_list_objects &&
 342         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 343         idx64=objects64/pack/test-64-$pack64.idx &&
 344         chmod u+w $idx64 &&
 345         corrupt_data $idx64 2999 "\02" &&
 346         midx64=$(git multi-pack-index --object-dir=objects64 write) &&
 347         midx_read_expect 1 63 5 objects64 " large-offsets"
 348 '
 349
 350 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 351         git multi-pack-index verify --object-dir=objects64
 352 '
 353
 354 NUM_OBJECTS=63
 355 MIDX_OFFSET_OID_FANOUT=$((MIDX_OFFSET_PACKNAMES + 54))
 356 MIDX_OFFSET_OID_LOOKUP=$((MIDX_OFFSET_OID_FANOUT + 256 * $MIDX_OID_FANOUT_WIDTH))
 357 MIDX_OFFSET_OBJECT_OFFSETS=$(($MIDX_OFFSET_OID_LOOKUP + $NUM_OBJECTS * $HASH_LEN))
 358 MIDX_OFFSET_LARGE_OFFSETS=$(($MIDX_OFFSET_OBJECT_OFFSETS + $NUM_OBJECTS * $MIDX_OFFSET_WIDTH))
 359 MIDX_BYTE_LARGE_OFFSET=$(($MIDX_OFFSET_LARGE_OFFSETS + 3))
 360
 361 test_expect_success 'verify incorrect 64-bit offset' '
 362         corrupt_midx_and_verify $MIDX_BYTE_LARGE_OFFSET "\07" objects64 \
 363                 "incorrect object offset"
 364 '
 365
 366 test_done