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git/t/t5302-pack-index.sh

281 lines
9.0 KiB

#!/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' '
test_oid_init &&
rawsz=$(test_oid rawsz) &&
rm -rf .git &&
git init &&
git config pack.threads 1 &&
i=1 &&
while test $i -le 100
do
iii=$(printf '%03i' $i)
test-tool genrandom "bar" 200 > wide_delta_$iii &&
test-tool genrandom "baz $iii" 50 >> wide_delta_$iii &&
test-tool genrandom "foo"$i 100 > deep_delta_$iii &&
test-tool genrandom "foo"$(expr $i + 1) 100 >> deep_delta_$iii &&
test-tool genrandom "foo"$(expr $i + 2) 100 >> deep_delta_$iii &&
echo $iii >file_$iii &&
test-tool genrandom "$iii" 8192 >>file_$iii &&
git update-index --add file_$iii deep_delta_$iii wide_delta_$iii &&
i=$(expr $i + 1) || return 1
done &&
{ echo 101 && test-tool genrandom 100 8192; } >file_101 &&
git update-index --add file_101 &&
tree=$(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-${pack2}.idx" "2.idx"
'
test_expect_success 'index-pack --verify on index version 1' '
git index-pack --verify "test-1-${pack1}.pack"
'
test_expect_success 'index-pack --verify on index version 2' '
git index-pack --verify "test-2-${pack2}.pack"
'
test_expect_success 'pack-objects --index-version=2, is not accepted' '
test_must_fail git pack-objects --index-version=2, test-3 <obj-list
'
test_expect_success 'index v2: force some 64-bit offsets with pack-objects' '
pack3=$(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"
'
test_expect_success OFF64_T 'index-pack --verify on 64-bit offset v2 (cheat)' '
# This cheats by knowing which lower offset should still be encoded
# in 64-bit representation.
git index-pack --verify --index-version=2,0x40000 "test-3-${pack3}.pack"
'
test_expect_success OFF64_T 'index-pack --verify on 64-bit offset v2' '
git index-pack --verify "test-3-${pack3}.pack"
'
# 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" &&
recordsz=$((rawsz + 4)) &&
dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
if=".git/objects/pack/pack-${pack1}.idx" \
skip=$((4 + 256 * 4 + $nr_099 * recordsz)) \
bs=1 count=$rawsz 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-${pack4}.pack"
'
test_expect_success '[index v1] 6) newly created pack is BAD !' '
test_must_fail git verify-pack -v "test-4-${pack4}.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 + $nr_099 * rawsz)) \
bs=1 count=$rawsz 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) * rawsz + $nr * 4)) &&
( while read obj
do git cat-file -p $obj >/dev/null || exit 1
done <obj-list ) &&
test_must_fail git verify-pack ".git/objects/pack/pack-${pack1}.pack"
'
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_expect_success 'index-pack --strict warns upon missing tagger in tag' '
sha=$(git rev-parse HEAD) &&
cat >wrong-tag <<EOF &&
object $sha
type commit
tag guten tag
This is an invalid tag.
EOF
tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
pack1=$(echo $tag $sha | git pack-objects tag-test) &&
echo remove tag object &&
thirtyeight=${tag#??} &&
rm -f .git/objects/${tag%$thirtyeight}/$thirtyeight &&
git index-pack --strict tag-test-${pack1}.pack 2>err &&
grep "^warning:.* expected .tagger. line" err
'
test_expect_success 'index-pack --fsck-objects also warns upon missing tagger in tag' '
git index-pack --fsck-objects tag-test-${pack1}.pack 2>err &&
grep "^warning:.* expected .tagger. line" err
'
test_done