t/t5302-pack-index.sh - jrn/git - Git at Google

 #!/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
	#!/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