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Diffstat (limited to 't/t5302-pack-index.sh')
| -rwxr-xr-x | t/t5302-pack-index.sh | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/t/t5302-pack-index.sh b/t/t5302-pack-index.sh new file mode 100755 index 0000000..fb3a270 --- /dev/null +++ b/t/t5302-pack-index.sh @@ -0,0 +1,225 @@ +#!/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 |