mirror of
https://github.com/git/git
synced 2024-09-12 21:04:12 +00:00
43fa44fa3b
Instead of using 8 bytes (on 64 bit arch) to store a pointer to a
pack. Use an index instead since the number of packs should be
relatively small.
This limits the number of packs we can handle to 1k. Since we can't be
sure people can never run into the situation where they have more than
1k pack files. Provide a fall back route for it.
If we find out they have too many packs, the new in_pack_by_idx[]
array (which has at most 1k elements) will not be used. Instead we
allocate in_pack[] array that holds nr_objects elements. This is
similar to how the optional in_pack_pos field is handled.
The new simple test is just to make sure the too-many-packs code path
is at least executed. The true test is running
make test GIT_TEST_FULL_IN_PACK_ARRAY=1
to take advantage of other special case tests.
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
489 lines
14 KiB
Bash
Executable file
489 lines
14 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2005 Junio C Hamano
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#
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test_description='git pack-object
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'
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. ./test-lib.sh
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TRASH=$(pwd)
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test_expect_success \
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'setup' \
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'rm -f .git/index* &&
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perl -e "print \"a\" x 4096;" > a &&
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perl -e "print \"b\" x 4096;" > b &&
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perl -e "print \"c\" x 4096;" > c &&
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test-tool genrandom "seed a" 2097152 > a_big &&
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test-tool genrandom "seed b" 2097152 > b_big &&
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git update-index --add a a_big b b_big c &&
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cat c >d && echo foo >>d && git update-index --add d &&
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tree=$(git write-tree) &&
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commit=$(git commit-tree $tree </dev/null) && {
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echo $tree &&
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echo $commit &&
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git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\) .*/\\1/"
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} >obj-list && {
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git diff-tree --root -p $commit &&
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while read object
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do
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t=$(git cat-file -t $object) &&
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git cat-file $t $object || return 1
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done <obj-list
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} >expect'
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test_expect_success \
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'pack without delta' \
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'packname_1=$(git pack-objects --window=0 test-1 <obj-list)'
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test_expect_success \
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'pack-objects with bogus arguments' \
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'test_must_fail git pack-objects --window=0 test-1 blah blah <obj-list'
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rm -fr .git2
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mkdir .git2
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test_expect_success \
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'unpack without delta' \
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"GIT_OBJECT_DIRECTORY=.git2/objects &&
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export GIT_OBJECT_DIRECTORY &&
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git init &&
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git unpack-objects -n <test-1-${packname_1}.pack &&
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git unpack-objects <test-1-${packname_1}.pack"
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unset GIT_OBJECT_DIRECTORY
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cd "$TRASH/.git2"
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test_expect_success \
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'check unpack without delta' \
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'(cd ../.git && find objects -type f -print) |
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while read path
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do
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cmp $path ../.git/$path || {
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echo $path differs.
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return 1
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}
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done'
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cd "$TRASH"
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test_expect_success \
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'pack with REF_DELTA' \
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'pwd &&
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packname_2=$(git pack-objects test-2 <obj-list)'
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rm -fr .git2
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mkdir .git2
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test_expect_success \
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'unpack with REF_DELTA' \
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'GIT_OBJECT_DIRECTORY=.git2/objects &&
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export GIT_OBJECT_DIRECTORY &&
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git init &&
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git unpack-objects -n <test-2-${packname_2}.pack &&
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git unpack-objects <test-2-${packname_2}.pack'
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unset GIT_OBJECT_DIRECTORY
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cd "$TRASH/.git2"
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test_expect_success \
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'check unpack with REF_DELTA' \
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'(cd ../.git && find objects -type f -print) |
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while read path
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do
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cmp $path ../.git/$path || {
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echo $path differs.
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return 1
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}
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done'
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cd "$TRASH"
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test_expect_success \
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'pack with OFS_DELTA' \
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'pwd &&
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packname_3=$(git pack-objects --delta-base-offset test-3 <obj-list)'
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rm -fr .git2
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mkdir .git2
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test_expect_success \
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'unpack with OFS_DELTA' \
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'GIT_OBJECT_DIRECTORY=.git2/objects &&
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export GIT_OBJECT_DIRECTORY &&
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git init &&
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git unpack-objects -n <test-3-${packname_3}.pack &&
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git unpack-objects <test-3-${packname_3}.pack'
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unset GIT_OBJECT_DIRECTORY
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cd "$TRASH/.git2"
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test_expect_success \
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'check unpack with OFS_DELTA' \
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'(cd ../.git && find objects -type f -print) |
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while read path
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do
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cmp $path ../.git/$path || {
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echo $path differs.
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return 1
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}
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done'
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cd "$TRASH"
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test_expect_success 'compare delta flavors' '
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perl -e '\''
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defined($_ = -s $_) or die for @ARGV;
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exit 1 if $ARGV[0] <= $ARGV[1];
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'\'' test-2-$packname_2.pack test-3-$packname_3.pack
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'
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rm -fr .git2
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mkdir .git2
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test_expect_success \
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'use packed objects' \
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'GIT_OBJECT_DIRECTORY=.git2/objects &&
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export GIT_OBJECT_DIRECTORY &&
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git init &&
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cp test-1-${packname_1}.pack test-1-${packname_1}.idx .git2/objects/pack && {
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git diff-tree --root -p $commit &&
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while read object
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do
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t=$(git cat-file -t $object) &&
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git cat-file $t $object || return 1
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done <obj-list
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} >current &&
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cmp expect current'
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test_expect_success \
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'use packed deltified (REF_DELTA) objects' \
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'GIT_OBJECT_DIRECTORY=.git2/objects &&
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export GIT_OBJECT_DIRECTORY &&
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rm -f .git2/objects/pack/test-* &&
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cp test-2-${packname_2}.pack test-2-${packname_2}.idx .git2/objects/pack && {
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git diff-tree --root -p $commit &&
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while read object
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do
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t=$(git cat-file -t $object) &&
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git cat-file $t $object || return 1
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done <obj-list
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} >current &&
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cmp expect current'
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test_expect_success \
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'use packed deltified (OFS_DELTA) objects' \
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'GIT_OBJECT_DIRECTORY=.git2/objects &&
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export GIT_OBJECT_DIRECTORY &&
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rm -f .git2/objects/pack/test-* &&
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cp test-3-${packname_3}.pack test-3-${packname_3}.idx .git2/objects/pack && {
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git diff-tree --root -p $commit &&
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while read object
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do
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t=$(git cat-file -t $object) &&
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git cat-file $t $object || return 1
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done <obj-list
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} >current &&
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cmp expect current'
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unset GIT_OBJECT_DIRECTORY
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test_expect_success 'survive missing objects/pack directory' '
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(
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rm -fr missing-pack &&
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mkdir missing-pack &&
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cd missing-pack &&
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git init &&
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GOP=.git/objects/pack
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rm -fr $GOP &&
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git index-pack --stdin --keep=test <../test-3-${packname_3}.pack &&
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test -f $GOP/pack-${packname_3}.pack &&
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cmp $GOP/pack-${packname_3}.pack ../test-3-${packname_3}.pack &&
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test -f $GOP/pack-${packname_3}.idx &&
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cmp $GOP/pack-${packname_3}.idx ../test-3-${packname_3}.idx &&
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test -f $GOP/pack-${packname_3}.keep
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)
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'
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test_expect_success \
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'verify pack' \
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'git verify-pack test-1-${packname_1}.idx \
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test-2-${packname_2}.idx \
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test-3-${packname_3}.idx'
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test_expect_success \
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'verify pack -v' \
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'git verify-pack -v test-1-${packname_1}.idx \
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test-2-${packname_2}.idx \
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test-3-${packname_3}.idx'
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test_expect_success \
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'verify-pack catches mismatched .idx and .pack files' \
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'cat test-1-${packname_1}.idx >test-3.idx &&
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cat test-2-${packname_2}.pack >test-3.pack &&
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if git verify-pack test-3.idx
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then false
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else :;
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fi'
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test_expect_success \
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'verify-pack catches a corrupted pack signature' \
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'cat test-1-${packname_1}.pack >test-3.pack &&
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echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=2 &&
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if git verify-pack test-3.idx
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then false
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else :;
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fi'
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test_expect_success \
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'verify-pack catches a corrupted pack version' \
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'cat test-1-${packname_1}.pack >test-3.pack &&
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echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=7 &&
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if git verify-pack test-3.idx
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then false
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else :;
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fi'
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test_expect_success \
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'verify-pack catches a corrupted type/size of the 1st packed object data' \
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'cat test-1-${packname_1}.pack >test-3.pack &&
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echo | dd of=test-3.pack count=1 bs=1 conv=notrunc seek=12 &&
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if git verify-pack test-3.idx
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then false
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else :;
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fi'
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test_expect_success \
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'verify-pack catches a corrupted sum of the index file itself' \
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'l=$(wc -c <test-3.idx) &&
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l=$(expr $l - 20) &&
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cat test-1-${packname_1}.pack >test-3.pack &&
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printf "%20s" "" | dd of=test-3.idx count=20 bs=1 conv=notrunc seek=$l &&
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if git verify-pack test-3.pack
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then false
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else :;
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fi'
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test_expect_success \
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'build pack index for an existing pack' \
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'cat test-1-${packname_1}.pack >test-3.pack &&
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git index-pack -o tmp.idx test-3.pack &&
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cmp tmp.idx test-1-${packname_1}.idx &&
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git index-pack test-3.pack &&
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cmp test-3.idx test-1-${packname_1}.idx &&
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cat test-2-${packname_2}.pack >test-3.pack &&
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git index-pack -o tmp.idx test-2-${packname_2}.pack &&
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cmp tmp.idx test-2-${packname_2}.idx &&
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git index-pack test-3.pack &&
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cmp test-3.idx test-2-${packname_2}.idx &&
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cat test-3-${packname_3}.pack >test-3.pack &&
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git index-pack -o tmp.idx test-3-${packname_3}.pack &&
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cmp tmp.idx test-3-${packname_3}.idx &&
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git index-pack test-3.pack &&
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cmp test-3.idx test-3-${packname_3}.idx &&
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cat test-1-${packname_1}.pack >test-4.pack &&
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rm -f test-4.keep &&
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git index-pack --keep=why test-4.pack &&
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cmp test-1-${packname_1}.idx test-4.idx &&
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test -f test-4.keep &&
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:'
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test_expect_success 'unpacking with --strict' '
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for j in a b c d e f g
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do
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for i in 0 1 2 3 4 5 6 7 8 9
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do
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o=$(echo $j$i | git hash-object -w --stdin) &&
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echo "100644 $o 0 $j$i"
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done
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done >LIST &&
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rm -f .git/index &&
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git update-index --index-info <LIST &&
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LIST=$(git write-tree) &&
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rm -f .git/index &&
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head -n 10 LIST | git update-index --index-info &&
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LI=$(git write-tree) &&
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rm -f .git/index &&
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tail -n 10 LIST | git update-index --index-info &&
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ST=$(git write-tree) &&
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git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
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PACK5=$( git pack-objects test-5 <actual ) &&
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PACK6=$( (
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echo "$LIST"
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echo "$LI"
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echo "$ST"
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) | git pack-objects test-6 ) &&
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test_create_repo test-5 &&
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(
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cd test-5 &&
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git unpack-objects --strict <../test-5-$PACK5.pack &&
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git ls-tree -r $LIST &&
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git ls-tree -r $LI &&
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git ls-tree -r $ST
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) &&
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test_create_repo test-6 &&
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(
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# tree-only into empty repo -- many unreachables
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cd test-6 &&
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test_must_fail git unpack-objects --strict <../test-6-$PACK6.pack
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) &&
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(
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# already populated -- no unreachables
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cd test-5 &&
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git unpack-objects --strict <../test-6-$PACK6.pack
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)
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'
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test_expect_success 'index-pack with --strict' '
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for j in a b c d e f g
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do
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for i in 0 1 2 3 4 5 6 7 8 9
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do
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o=$(echo $j$i | git hash-object -w --stdin) &&
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echo "100644 $o 0 $j$i"
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done
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done >LIST &&
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rm -f .git/index &&
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git update-index --index-info <LIST &&
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LIST=$(git write-tree) &&
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rm -f .git/index &&
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head -n 10 LIST | git update-index --index-info &&
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LI=$(git write-tree) &&
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rm -f .git/index &&
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tail -n 10 LIST | git update-index --index-info &&
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ST=$(git write-tree) &&
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git rev-list --objects "$LIST" "$LI" "$ST" >actual &&
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PACK5=$( git pack-objects test-5 <actual ) &&
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PACK6=$( (
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echo "$LIST"
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echo "$LI"
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echo "$ST"
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) | git pack-objects test-6 ) &&
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test_create_repo test-7 &&
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(
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cd test-7 &&
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git index-pack --strict --stdin <../test-5-$PACK5.pack &&
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git ls-tree -r $LIST &&
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git ls-tree -r $LI &&
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git ls-tree -r $ST
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) &&
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test_create_repo test-8 &&
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(
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# tree-only into empty repo -- many unreachables
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cd test-8 &&
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test_must_fail git index-pack --strict --stdin <../test-6-$PACK6.pack
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) &&
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(
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# already populated -- no unreachables
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cd test-7 &&
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git index-pack --strict --stdin <../test-6-$PACK6.pack
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)
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'
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test_expect_success 'honor pack.packSizeLimit' '
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git config pack.packSizeLimit 3m &&
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packname_10=$(git pack-objects test-10 <obj-list) &&
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test 2 = $(ls test-10-*.pack | wc -l)
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'
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test_expect_success 'verify resulting packs' '
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git verify-pack test-10-*.pack
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'
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test_expect_success 'tolerate packsizelimit smaller than biggest object' '
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git config pack.packSizeLimit 1 &&
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packname_11=$(git pack-objects test-11 <obj-list) &&
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test 5 = $(ls test-11-*.pack | wc -l)
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'
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test_expect_success 'verify resulting packs' '
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git verify-pack test-11-*.pack
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'
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test_expect_success 'set up pack for non-repo tests' '
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# make sure we have a pack with no matching index file
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cp test-1-*.pack foo.pack
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'
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test_expect_success 'index-pack --stdin complains of non-repo' '
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nongit test_must_fail git index-pack --stdin <foo.pack &&
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test_path_is_missing non-repo/.git
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'
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test_expect_success 'index-pack <pack> works in non-repo' '
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nongit git index-pack ../foo.pack &&
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test_path_is_file foo.idx
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'
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test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'index-pack --threads=N or pack.threads=N warns when no pthreads' '
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test_must_fail git index-pack --threads=2 2>err &&
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grep ^warning: err >warnings &&
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test_line_count = 1 warnings &&
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grep -F "no threads support, ignoring --threads=2" err &&
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test_must_fail git -c pack.threads=2 index-pack 2>err &&
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grep ^warning: err >warnings &&
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test_line_count = 1 warnings &&
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grep -F "no threads support, ignoring pack.threads" err &&
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test_must_fail git -c pack.threads=2 index-pack --threads=4 2>err &&
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grep ^warning: err >warnings &&
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test_line_count = 2 warnings &&
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grep -F "no threads support, ignoring --threads=4" err &&
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grep -F "no threads support, ignoring pack.threads" err
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'
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test_expect_success !PTHREADS,C_LOCALE_OUTPUT 'pack-objects --threads=N or pack.threads=N warns when no pthreads' '
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git pack-objects --threads=2 --stdout --all </dev/null >/dev/null 2>err &&
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grep ^warning: err >warnings &&
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test_line_count = 1 warnings &&
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grep -F "no threads support, ignoring --threads" err &&
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git -c pack.threads=2 pack-objects --stdout --all </dev/null >/dev/null 2>err &&
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grep ^warning: err >warnings &&
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test_line_count = 1 warnings &&
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grep -F "no threads support, ignoring pack.threads" err &&
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git -c pack.threads=2 pack-objects --threads=4 --stdout --all </dev/null >/dev/null 2>err &&
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grep ^warning: err >warnings &&
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test_line_count = 2 warnings &&
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grep -F "no threads support, ignoring --threads" err &&
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grep -F "no threads support, ignoring pack.threads" err
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'
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test_expect_success 'pack-objects in too-many-packs mode' '
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GIT_TEST_FULL_IN_PACK_ARRAY=1 git repack -ad &&
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git fsck
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'
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#
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# WARNING!
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#
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# The following test is destructive. Please keep the next
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# two tests at the end of this file.
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#
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test_expect_success \
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'fake a SHA1 hash collision' \
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'test -f .git/objects/c8/2de19312b6c3695c0c18f70709a6c535682a67 &&
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cp -f .git/objects/9d/235ed07cd19811a6ceb342de82f190e49c9f68 \
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.git/objects/c8/2de19312b6c3695c0c18f70709a6c535682a67'
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|
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test_expect_success \
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'make sure index-pack detects the SHA1 collision' \
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'test_must_fail git index-pack -o bad.idx test-3.pack 2>msg &&
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test_i18ngrep "SHA1 COLLISION FOUND" msg'
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|
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test_expect_success \
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|
'make sure index-pack detects the SHA1 collision (large blobs)' \
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|
'test_must_fail git -c core.bigfilethreshold=1 index-pack -o bad.idx test-3.pack 2>msg &&
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|
test_i18ngrep "SHA1 COLLISION FOUND" msg'
|
|
|
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test_done
|