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         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
 100 compare_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
 111 test_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
 117 compare_results_with_midx "one v2 pack"
 118
 119 test_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
 127 test_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
 133 compare_results_with_midx "two packs"
 134
 135 test_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 $objdir/pack/test-pack <obj-list
 141         done
 142 '
 143
 144 compare_results_with_midx "mixed mode (two packs + extra)"
 145
 146 test_expect_success 'write midx with twelve packs' '
 147         git multi-pack-index --object-dir=$objdir write &&
 148         midx_read_expect 12 74 4 $objdir
 149 '
 150
 151 compare_results_with_midx "twelve packs"
 152
 153 test_expect_success 'verify multi-pack-index success' '
 154         git multi-pack-index verify --object-dir=$objdir
 155 '
 156
 157 # usage: corrupt_midx_and_verify <pos> <data> <objdir> <string>
 158 corrupt_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
 173 test_expect_success 'verify bad signature' '
 174         corrupt_midx_and_verify 0 "\00" $objdir \
 175                 "multi-pack-index signature"
 176 '
 177
 178 MIDX_BYTE_VERSION=4
 179 MIDX_BYTE_OID_VERSION=5
 180 MIDX_BYTE_CHUNK_COUNT=6
 181 MIDX_HEADER_SIZE=12
 182 MIDX_BYTE_CHUNK_ID=$MIDX_HEADER_SIZE
 183 MIDX_BYTE_CHUNK_OFFSET=$(($MIDX_HEADER_SIZE + 4))
 184 MIDX_NUM_CHUNKS=5
 185 MIDX_CHUNK_LOOKUP_WIDTH=12
 186 MIDX_OFFSET_PACKNAMES=$(($MIDX_HEADER_SIZE + \
 187                          $MIDX_NUM_CHUNKS * $MIDX_CHUNK_LOOKUP_WIDTH))
 188 MIDX_BYTE_PACKNAME_ORDER=$(($MIDX_OFFSET_PACKNAMES + 2))
 189
 190 test_expect_success 'verify bad version' '
 191         corrupt_midx_and_verify $MIDX_BYTE_VERSION "\00" $objdir \
 192                 "multi-pack-index version"
 193 '
 194
 195 test_expect_success 'verify bad OID version' '
 196         corrupt_midx_and_verify $MIDX_BYTE_OID_VERSION "\02" $objdir \
 197                 "hash version"
 198 '
 199
 200 test_expect_success 'verify truncated chunk count' '
 201         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\01" $objdir \
 202                 "missing required"
 203 '
 204
 205 test_expect_success 'verify extended chunk count' '
 206         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_COUNT "\07" $objdir \
 207                 "terminating multi-pack-index chunk id appears earlier than expected"
 208 '
 209
 210 test_expect_success 'verify missing required chunk' '
 211         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_ID "\01" $objdir \
 212                 "missing required"
 213 '
 214
 215 test_expect_success 'verify invalid chunk offset' '
 216         corrupt_midx_and_verify $MIDX_BYTE_CHUNK_OFFSET "\01" $objdir \
 217                 "invalid chunk offset (too large)"
 218 '
 219
 220 test_expect_success 'verify packnames out of order' '
 221         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "z" $objdir \
 222                 "pack names out of order"
 223 '
 224
 225 test_expect_success 'verify packnames out of order' '
 226         corrupt_midx_and_verify $MIDX_BYTE_PACKNAME_ORDER "a" $objdir \
 227                 "failed to load pack"
 228 '
 229
 230 test_expect_success 'repack removes multi-pack-index' '
 231         test_path_is_file $objdir/pack/multi-pack-index &&
 232         git repack -adf &&
 233         test_path_is_missing $objdir/pack/multi-pack-index
 234 '
 235
 236 compare_results_with_midx "after repack"
 237
 238 test_expect_success 'multi-pack-index and pack-bitmap' '
 239         git -c repack.writeBitmaps=true repack -ad &&
 240         git multi-pack-index write &&
 241         git rev-list --test-bitmap HEAD
 242 '
 243
 244 test_expect_success 'multi-pack-index and alternates' '
 245         git init --bare alt.git &&
 246         echo $(pwd)/alt.git/objects >.git/objects/info/alternates &&
 247         echo content1 >file1 &&
 248         altblob=$(GIT_DIR=alt.git git hash-object -w file1) &&
 249         git cat-file blob $altblob &&
 250         git rev-list --all
 251 '
 252
 253 compare_results_with_midx "with alternate (local midx)"
 254
 255 test_expect_success 'multi-pack-index in an alternate' '
 256         mv .git/objects/pack/* alt.git/objects/pack &&
 257         test_commit add_local_objects &&
 258         git repack --local &&
 259         git multi-pack-index write &&
 260         midx_read_expect 1 3 4 $objdir &&
 261         git reset --hard HEAD~1 &&
 262         rm -f .git/objects/pack/*
 263 '
 264
 265 compare_results_with_midx "with alternate (remote midx)"
 266
 267 # usage: corrupt_data <file> <pos> [<data>]
 268 corrupt_data () {
 269         file=$1
 270         pos=$2
 271         data="${3:-\0}"
 272         printf "$data" | dd of="$file" bs=1 seek="$pos" conv=notrunc
 273 }
 274
 275 # Force 64-bit offsets by manipulating the idx file.
 276 # This makes the IDX file _incorrect_ so be careful to clean up after!
 277 test_expect_success 'force some 64-bit offsets with pack-objects' '
 278         mkdir objects64 &&
 279         mkdir objects64/pack &&
 280         for i in $(test_seq 1 11)
 281         do
 282                 generate_objects 11
 283         done &&
 284         commit_and_list_objects &&
 285         pack64=$(git pack-objects --index-version=2,0x40 objects64/pack/test-64 <obj-list) &&
 286         idx64=objects64/pack/test-64-$pack64.idx &&
 287         chmod u+w $idx64 &&
 288         corrupt_data $idx64 2999 "\02" &&
 289         midx64=$(git multi-pack-index --object-dir=objects64 write) &&
 290         midx_read_expect 1 63 5 objects64 " large-offsets"
 291 '
 292
 293 test_expect_success 'verify multi-pack-index with 64-bit offsets' '
 294         git multi-pack-index verify --object-dir=objects64
 295 '
 296
 297 test_done