t/t5604-clone-reference.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (C) 2006 Martin Waitz <tali@admingilde.org>
   4 #
   5
   6 test_description='test clone --reference'
   7 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   8 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   9
  10 TEST_PASSES_SANITIZE_LEAK=true
  11 . ./test-lib.sh
  12
  13 base_dir=$(pwd)
  14
  15 U=$base_dir/UPLOAD_LOG
  16
  17 # create a commit in repo $1 with name $2
  18 commit_in () {
  19         (
  20                 cd "$1" &&
  21                 echo "$2" >"$2" &&
  22                 git add "$2" &&
  23                 git commit -m "$2"
  24         )
  25 }
  26
  27 # check that there are $2 loose objects in repo $1
  28 test_objcount () {
  29         echo "$2" >expect &&
  30         git -C "$1" count-objects >actual.raw &&
  31         cut -d' ' -f1 <actual.raw >actual &&
  32         test_cmp expect actual
  33 }
  34
  35 test_expect_success 'preparing first repository' '
  36         test_create_repo A &&
  37         commit_in A file1
  38 '
  39
  40 test_expect_success 'preparing second repository' '
  41         git clone A B &&
  42         commit_in B file2 &&
  43         git -C B repack -ad &&
  44         git -C B prune
  45 '
  46
  47 test_expect_success 'cloning with reference (-l -s)' '
  48         git clone -l -s --reference B A C
  49 '
  50
  51 test_expect_success 'existence of info/alternates' '
  52         test_line_count = 2 C/.git/objects/info/alternates
  53 '
  54
  55 test_expect_success 'pulling from reference' '
  56         git -C C pull ../B main
  57 '
  58
  59 test_expect_success 'that reference gets used' '
  60         test_objcount C 0
  61 '
  62
  63 test_expect_success 'cloning with reference (no -l -s)' '
  64         GIT_TRACE_PACKET=$U.D git clone --reference B "file://$(pwd)/A" D
  65 '
  66
  67 test_expect_success 'fetched no objects' '
  68         test -s "$U.D" &&
  69         ! grep " want" "$U.D"
  70 '
  71
  72 test_expect_success 'existence of info/alternates' '
  73         test_line_count = 1 D/.git/objects/info/alternates
  74 '
  75
  76 test_expect_success 'pulling from reference' '
  77         git -C D pull ../B main
  78 '
  79
  80 test_expect_success 'that reference gets used' '
  81         test_objcount D 0
  82 '
  83
  84 test_expect_success 'updating origin' '
  85         commit_in A file3 &&
  86         git -C A repack -ad &&
  87         git -C A prune
  88 '
  89
  90 test_expect_success 'pulling changes from origin' '
  91         git -C C pull --no-rebase origin
  92 '
  93
  94 # the 2 local objects are commit and tree from the merge
  95 test_expect_success 'that alternate to origin gets used' '
  96         test_objcount C 2
  97 '
  98
  99 test_expect_success 'pulling changes from origin' '
 100         git -C D pull --no-rebase origin
 101 '
 102
 103 # the 5 local objects are expected; file3 blob, commit in A to add it
 104 # and its tree, and 2 are our tree and the merge commit.
 105 test_expect_success 'check objects expected to exist locally' '
 106         test_objcount D 5
 107 '
 108
 109 test_expect_success 'preparing alternate repository #1' '
 110         test_create_repo F &&
 111         commit_in F file1
 112 '
 113
 114 test_expect_success 'cloning alternate repo #2 and adding changes to repo #1' '
 115         git clone F G &&
 116         commit_in F file2
 117 '
 118
 119 test_expect_success 'cloning alternate repo #1, using #2 as reference' '
 120         git clone --reference G F H
 121 '
 122
 123 test_expect_success 'cloning with reference being subset of source (-l -s)' '
 124         git clone -l -s --reference A B E
 125 '
 126
 127 test_expect_success 'cloning with multiple references drops duplicates' '
 128         git clone -s --reference B --reference A --reference B A dups &&
 129         test_line_count = 2 dups/.git/objects/info/alternates
 130 '
 131
 132 test_expect_success 'clone with reference from a tagged repository' '
 133         (
 134                 cd A && git tag -a -m tagged HEAD
 135         ) &&
 136         git clone --reference=A A I
 137 '
 138
 139 test_expect_success 'prepare branched repository' '
 140         git clone A J &&
 141         (
 142                 cd J &&
 143                 git checkout -b other main^ &&
 144                 echo other >otherfile &&
 145                 git add otherfile &&
 146                 git commit -m other &&
 147                 git checkout main
 148         )
 149 '
 150
 151 test_expect_success 'fetch with incomplete alternates' '
 152         git init K &&
 153         echo "$base_dir/A/.git/objects" >K/.git/objects/info/alternates &&
 154         (
 155                 cd K &&
 156                 git remote add J "file://$base_dir/J" &&
 157                 GIT_TRACE_PACKET=$U.K git fetch J
 158         ) &&
 159         main_object=$(cd A && git for-each-ref --format="%(objectname)" refs/heads/main) &&
 160         test -s "$U.K" &&
 161         ! grep " want $main_object" "$U.K" &&
 162         tag_object=$(cd A && git for-each-ref --format="%(objectname)" refs/tags/HEAD) &&
 163         ! grep " want $tag_object" "$U.K"
 164 '
 165
 166 test_expect_success 'clone using repo with gitfile as a reference' '
 167         git clone --separate-git-dir=L A M &&
 168         git clone --reference=M A N &&
 169         echo "$base_dir/L/objects" >expected &&
 170         test_cmp expected "$base_dir/N/.git/objects/info/alternates"
 171 '
 172
 173 test_expect_success 'clone using repo pointed at by gitfile as reference' '
 174         git clone --reference=M/.git A O &&
 175         echo "$base_dir/L/objects" >expected &&
 176         test_cmp expected "$base_dir/O/.git/objects/info/alternates"
 177 '
 178
 179 test_expect_success 'clone and dissociate from reference' '
 180         git init P &&
 181         (
 182                 cd P && test_commit one
 183         ) &&
 184         git clone P Q &&
 185         (
 186                 cd Q && test_commit two
 187         ) &&
 188         git clone --no-local --reference=P Q R &&
 189         git clone --no-local --reference=P --dissociate Q S &&
 190         # removing the reference P would corrupt R but not S
 191         rm -fr P &&
 192         test_must_fail git -C R fsck &&
 193         git -C S fsck
 194 '
 195 test_expect_success 'clone, dissociate from partial reference and repack' '
 196         rm -fr P Q R &&
 197         git init P &&
 198         (
 199                 cd P &&
 200                 test_commit one &&
 201                 git repack &&
 202                 test_commit two &&
 203                 git repack
 204         ) &&
 205         git clone --bare P Q &&
 206         (
 207                 cd P &&
 208                 git checkout -b second &&
 209                 test_commit three &&
 210                 git repack
 211         ) &&
 212         git clone --bare --dissociate --reference=P Q R &&
 213         ls R/objects/pack/*.pack >packs.txt &&
 214         test_line_count = 1 packs.txt
 215 '
 216
 217 test_expect_success 'clone, dissociate from alternates' '
 218         rm -fr A B C &&
 219         test_create_repo A &&
 220         commit_in A file1 &&
 221         git clone --reference=A A B &&
 222         test_line_count = 1 B/.git/objects/info/alternates &&
 223         git clone --local --dissociate B C &&
 224         ! test -f C/.git/objects/info/alternates &&
 225         ( cd C && git fsck )
 226 '
 227
 228 test_expect_success 'setup repo with garbage in objects/*' '
 229         git init S &&
 230         (
 231                 cd S &&
 232                 test_commit A &&
 233
 234                 cd .git/objects &&
 235                 >.some-hidden-file &&
 236                 >some-file &&
 237                 mkdir .some-hidden-dir &&
 238                 >.some-hidden-dir/some-file &&
 239                 >.some-hidden-dir/.some-dot-file &&
 240                 mkdir some-dir &&
 241                 >some-dir/some-file &&
 242                 >some-dir/.some-dot-file
 243         )
 244 '
 245
 246 test_expect_success 'clone a repo with garbage in objects/*' '
 247         for option in --local --no-hardlinks --shared --dissociate
 248         do
 249                 git clone $option S S$option || return 1 &&
 250                 git -C S$option fsck || return 1
 251         done &&
 252         find S-* -name "*some*" | sort >actual &&
 253         cat >expected <<-EOF &&
 254         S--dissociate/.git/objects/.some-hidden-dir
 255         S--dissociate/.git/objects/.some-hidden-dir/.some-dot-file
 256         S--dissociate/.git/objects/.some-hidden-dir/some-file
 257         S--dissociate/.git/objects/.some-hidden-file
 258         S--dissociate/.git/objects/some-dir
 259         S--dissociate/.git/objects/some-dir/.some-dot-file
 260         S--dissociate/.git/objects/some-dir/some-file
 261         S--dissociate/.git/objects/some-file
 262         S--local/.git/objects/.some-hidden-dir
 263         S--local/.git/objects/.some-hidden-dir/.some-dot-file
 264         S--local/.git/objects/.some-hidden-dir/some-file
 265         S--local/.git/objects/.some-hidden-file
 266         S--local/.git/objects/some-dir
 267         S--local/.git/objects/some-dir/.some-dot-file
 268         S--local/.git/objects/some-dir/some-file
 269         S--local/.git/objects/some-file
 270         S--no-hardlinks/.git/objects/.some-hidden-dir
 271         S--no-hardlinks/.git/objects/.some-hidden-dir/.some-dot-file
 272         S--no-hardlinks/.git/objects/.some-hidden-dir/some-file
 273         S--no-hardlinks/.git/objects/.some-hidden-file
 274         S--no-hardlinks/.git/objects/some-dir
 275         S--no-hardlinks/.git/objects/some-dir/.some-dot-file
 276         S--no-hardlinks/.git/objects/some-dir/some-file
 277         S--no-hardlinks/.git/objects/some-file
 278         EOF
 279         test_cmp expected actual
 280 '
 281
 282 test_expect_success SYMLINKS 'setup repo with manually symlinked or unknown files at objects/' '
 283         git init T &&
 284         (
 285                 cd T &&
 286                 git config gc.auto 0 &&
 287                 test_commit A &&
 288                 git gc &&
 289                 test_commit B &&
 290
 291                 cd .git/objects &&
 292                 mv pack packs &&
 293                 ln -s packs pack &&
 294                 find ?? -type d >loose-dirs &&
 295                 last_loose=$(tail -n 1 loose-dirs) &&
 296                 mv $last_loose a-loose-dir &&
 297                 ln -s a-loose-dir $last_loose &&
 298                 first_loose=$(head -n 1 loose-dirs) &&
 299                 rm -f loose-dirs &&
 300
 301                 cd $first_loose &&
 302                 obj=$(ls *) &&
 303                 mv $obj ../an-object &&
 304                 ln -s ../an-object $obj &&
 305
 306                 cd ../ &&
 307                 echo unknown_content >unknown_file
 308         ) &&
 309         git -C T fsck &&
 310         git -C T rev-list --all --objects >T.objects
 311 '
 312
 313
 314 test_expect_success SYMLINKS 'clone repo with symlinked or unknown files at objects/' '
 315         # None of these options work when cloning locally, since T has
 316         # symlinks in its `$GIT_DIR/objects` directory
 317         for option in --local --no-hardlinks --dissociate
 318         do
 319                 test_must_fail git clone $option T T$option 2>err || return 1 &&
 320                 test_grep "symlink.*exists" err || return 1
 321         done &&
 322
 323         # But `--shared` clones should still work, even when specifying
 324         # a local path *and* that repository has symlinks present in its
 325         # `$GIT_DIR/objects` directory.
 326         git clone --shared T T--shared &&
 327         git -C T--shared fsck &&
 328         git -C T--shared rev-list --all --objects >T--shared.objects &&
 329         test_cmp T.objects T--shared.objects &&
 330         (
 331                 cd T--shared/.git/objects &&
 332                 find . -type f | sort >../../../T--shared.objects-files.raw &&
 333                 find . -type l | sort >../../../T--shared.objects-symlinks.raw
 334         ) &&
 335
 336         for raw in $(ls T*.raw)
 337         do
 338                 sed -e "s!/../!/Y/!; s![0-9a-f]\{38,\}!Z!" -e "/commit-graph/d" \
 339                     -e "/multi-pack-index/d" -e "/rev/d" <$raw >$raw.de-sha-1 &&
 340                 sort $raw.de-sha-1 >$raw.de-sha || return 1
 341         done &&
 342
 343         echo ./info/alternates >expected-files &&
 344         test_cmp expected-files T--shared.objects-files.raw &&
 345         test_must_be_empty T--shared.objects-symlinks.raw
 346 '
 347
 348 test_expect_success SYMLINKS 'clone repo with symlinked objects directory' '
 349         test_when_finished "rm -fr sensitive malicious" &&
 350
 351         mkdir -p sensitive &&
 352         echo "secret" >sensitive/file &&
 353
 354         git init malicious &&
 355         rm -fr malicious/.git/objects &&
 356         ln -s "$(pwd)/sensitive" ./malicious/.git/objects &&
 357
 358         test_must_fail git clone --local malicious clone 2>err &&
 359
 360         test_path_is_missing clone &&
 361         grep "is a symlink, refusing to clone with --local" err
 362 '
 363
 364 test_done