Andrew's git - gitweb.git/blob - t/t5302-pack-index.sh

   1#!/bin/sh
   2#
   3# Copyright (c) 2007 Nicolas Pitre
   4#
   5
   6test_description='pack index with 64-bit offsets and object CRC'
   7. ./test-lib.sh
   8
   9test_expect_success \
  10    'setup' \
  11    'rm -rf .git
  12     git init &&
  13     i=1 &&
  14         while test $i -le 100
  15     do
  16                 i=`printf '%03i' $i`
  17         echo $i >file_$i &&
  18         test-genrandom "$i" 8192 >>file_$i &&
  19         git update-index --add file_$i &&
  20                 i=`expr $i + 1` || return 1
  21     done &&
  22     { echo 101 && test-genrandom 100 8192; } >file_101 &&
  23     git update-index --add file_101 &&
  24     tree=`git write-tree` &&
  25     commit=`git commit-tree $tree </dev/null` && {
  26         echo $tree &&
  27         git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)       .*/\\1/"
  28     } >obj-list &&
  29     git update-ref HEAD $commit'
  30
  31test_expect_success \
  32    'pack-objects with index version 1' \
  33    'pack1=$(git pack-objects --index-version=1 test-1 <obj-list) &&
  34     git verify-pack -v "test-1-${pack1}.pack"'
  35
  36test_expect_success \
  37    'pack-objects with index version 2' \
  38    'pack2=$(git pack-objects --index-version=2 test-2 <obj-list) &&
  39     git verify-pack -v "test-2-${pack2}.pack"'
  40
  41test_expect_success \
  42    'both packs should be identical' \
  43    'cmp "test-1-${pack1}.pack" "test-2-${pack2}.pack"'
  44
  45test_expect_success \
  46    'index v1 and index v2 should be different' \
  47    '! cmp "test-1-${pack1}.idx" "test-2-${pack2}.idx"'
  48
  49test_expect_success \
  50    'index-pack with index version 1' \
  51    'git index-pack --index-version=1 -o 1.idx "test-1-${pack1}.pack"'
  52
  53test_expect_success \
  54    'index-pack with index version 2' \
  55    'git index-pack --index-version=2 -o 2.idx "test-1-${pack1}.pack"'
  56
  57test_expect_success \
  58    'index-pack results should match pack-objects ones' \
  59    'cmp "test-1-${pack1}.idx" "1.idx" &&
  60     cmp "test-2-${pack2}.idx" "2.idx"'
  61
  62test_expect_success \
  63    'index v2: force some 64-bit offsets with pack-objects' \
  64    'pack3=$(git pack-objects --index-version=2,0x40000 test-3 <obj-list)'
  65
  66have_64bits=
  67if msg=$(git verify-pack -v "test-3-${pack3}.pack" 2>&1) ||
  68        ! (echo "$msg" | grep "pack too large .* off_t")
  69then
  70        have_64bits=t
  71else
  72        say "skipping tests concerning 64-bit offsets"
  73fi
  74
  75test "$have_64bits" &&
  76test_expect_success \
  77    'index v2: verify a pack with some 64-bit offsets' \
  78    'git verify-pack -v "test-3-${pack3}.pack"'
  79
  80test "$have_64bits" &&
  81test_expect_success \
  82    '64-bit offsets: should be different from previous index v2 results' \
  83    '! cmp "test-2-${pack2}.idx" "test-3-${pack3}.idx"'
  84
  85test "$have_64bits" &&
  86test_expect_success \
  87    'index v2: force some 64-bit offsets with index-pack' \
  88    'git index-pack --index-version=2,0x40000 -o 3.idx "test-1-${pack1}.pack"'
  89
  90test "$have_64bits" &&
  91test_expect_success \
  92    '64-bit offsets: index-pack result should match pack-objects one' \
  93    'cmp "test-3-${pack3}.idx" "3.idx"'
  94
  95test_expect_success \
  96    '[index v1] 1) stream pack to repository' \
  97    'git index-pack --index-version=1 --stdin < "test-1-${pack1}.pack" &&
  98     git prune-packed &&
  99     git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
 100     cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
 101     cmp "test-1-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
 102
 103test_expect_success \
 104    '[index v1] 2) create a stealth corruption in a delta base reference' \
 105    '# this test assumes a delta smaller than 16 bytes at the end of the pack
 106     git show-index <1.idx | sort -n | sed -ne \$p | (
 107       read delta_offs delta_sha1 &&
 108       git cat-file blob "$delta_sha1" > blob_1 &&
 109       chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
 110       dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
 111          if=".git/objects/pack/pack-${pack1}.idx" skip=$((256 * 4 + 4)) \
 112          bs=1 count=20 conv=notrunc &&
 113       git cat-file blob "$delta_sha1" > blob_2 )'
 114
 115test_expect_success \
 116    '[index v1] 3) corrupted delta happily returned wrong data' \
 117    '! cmp blob_1 blob_2'
 118
 119test_expect_success \
 120    '[index v1] 4) confirm that the pack is actually corrupted' \
 121    'test_must_fail git fsck --full $commit'
 122
 123test_expect_success \
 124    '[index v1] 5) pack-objects happily reuses corrupted data' \
 125    'pack4=$(git pack-objects test-4 <obj-list) &&
 126     test -f "test-4-${pack1}.pack"'
 127
 128test_expect_success \
 129    '[index v1] 6) newly created pack is BAD !' \
 130    'test_must_fail git verify-pack -v "test-4-${pack1}.pack"'
 131
 132test_expect_success \
 133    '[index v2] 1) stream pack to repository' \
 134    'rm -f .git/objects/pack/* &&
 135     git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
 136     git prune-packed &&
 137     git count-objects | ( read nr rest && test "$nr" -eq 1 ) &&
 138     cmp "test-1-${pack1}.pack" ".git/objects/pack/pack-${pack1}.pack" &&
 139     cmp "test-2-${pack1}.idx"  ".git/objects/pack/pack-${pack1}.idx"'
 140
 141test_expect_success \
 142    '[index v2] 2) create a stealth corruption in a delta base reference' \
 143    '# this test assumes a delta smaller than 16 bytes at the end of the pack
 144     git show-index <1.idx | sort -n | sed -ne \$p | (
 145       read delta_offs delta_sha1 delta_crc &&
 146       git cat-file blob "$delta_sha1" > blob_3 &&
 147       chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
 148       dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($delta_offs + 1)) \
 149          if=".git/objects/pack/pack-${pack1}.idx" skip=$((8 + 256 * 4)) \
 150          bs=1 count=20 conv=notrunc &&
 151       git cat-file blob "$delta_sha1" > blob_4 )'
 152
 153test_expect_success \
 154    '[index v2] 3) corrupted delta happily returned wrong data' \
 155    '! cmp blob_3 blob_4'
 156
 157test_expect_success \
 158    '[index v2] 4) confirm that the pack is actually corrupted' \
 159    'test_must_fail git fsck --full $commit'
 160
 161test_expect_success \
 162    '[index v2] 5) pack-objects refuses to reuse corrupted data' \
 163    'test_must_fail git pack-objects test-5 <obj-list'
 164
 165test_expect_success \
 166    '[index v2] 6) verify-pack detects CRC mismatch' \
 167    'rm -f .git/objects/pack/* &&
 168     git index-pack --index-version=2 --stdin < "test-1-${pack1}.pack" &&
 169     git verify-pack ".git/objects/pack/pack-${pack1}.pack" &&
 170     chmod +w ".git/objects/pack/pack-${pack1}.idx" &&
 171     dd if=/dev/zero of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
 172        bs=1 count=4 seek=$((8 + 256 * 4 + `wc -l <obj-list` * 20 + 0)) &&
 173     ( while read obj
 174       do git cat-file -p $obj >/dev/null || exit 1
 175       done <obj-list ) &&
 176     err=$(test_must_fail git verify-pack \
 177       ".git/objects/pack/pack-${pack1}.pack" 2>&1) &&
 178     echo "$err" | grep "CRC mismatch"'
 179
 180test_done