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Matheus Tavares 36596fd2df clone: better handle symlinked files at .git/objects/ 
There is currently an odd behaviour when locally cloning a repository
with symlinks at .git/objects: using --no-hardlinks all symlinks are
dereferenced but without it, Git will try to hardlink the files with the
link() function, which has an OS-specific behaviour on symlinks. On OSX
and NetBSD, it creates a hardlink to the file pointed by the symlink
whilst on GNU/Linux, it creates a hardlink to the symlink itself.

On Manjaro GNU/Linux:
    $ touch a
    $ ln -s a b
    $ link b c
    $ ls -li a b c
    155 [...] a
    156 [...] b -> a
    156 [...] c -> a

But on NetBSD:
    $ ls -li a b c
    2609160 [...] a
    2609164 [...] b -> a
    2609160 [...] c

It's not good to have the result of a local clone to be OS-dependent and
besides that, the current behaviour on GNU/Linux may result in broken
symlinks. So let's standardize this by making the hardlinks always point
to dereferenced paths, instead of the symlinks themselves. Also, add
tests for symlinked files at .git/objects/.

Note: Git won't create symlinks at .git/objects itself, but it's better
to handle this case and be friendly with users who manually create them.

Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Co-authored-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-07-11 13:52:15 -07:00
..
add.c add: error appropriately on repository with no commits 2019-04-10 12:52:50 +09:00
am.c Merge branch 'bc/hash-transition-16' 2019-04-25 16:41:17 +09:00
annotate.c
apply.c apply.c: make init_apply_state() take a struct repository 2018-08-13 14:14:44 -07:00
archive.c pack-protocol.txt: accept error packets in any context 2019-01-02 13:05:30 -08:00
bisect--helper.c Fix typos in translatable strings for v2.21.0 2019-02-11 12:58:06 -08:00
blame.c Merge branch 'sg/blame-in-bare-start-at-head' 2019-04-25 16:41:21 +09:00
branch.c parse_opt_ref_sorting: always use with NONEG flag 2019-03-21 12:03:35 +09:00
bundle.c create_bundle(): drop unused "header" parameter 2019-01-24 12:35:44 -08:00
cat-file.c Merge branch 'jk/loose-object-cache-oid' 2019-02-06 22:05:27 -08:00
check-attr.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
check-ignore.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
check-mailmap.c
check-ref-format.c Merge branch 'jc/check-ref-format-oor' into maint 2017-11-15 12:04:57 +09:00
checkout-index.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
checkout.c Merge branch 'nd/checkout-m' 2019-04-25 16:41:14 +09:00
clean.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
clone.c clone: better handle symlinked files at .git/objects/ 2019-07-11 13:52:15 -07:00
column.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
commit-graph.c commit-graph verify: detect inability to read the graph 2019-04-01 12:14:50 +09:00
commit-tree.c commit-tree: utilize parse-options api 2019-03-08 10:31:24 +09:00
commit.c Merge branch 'pw/clean-sequencer-state-upon-final-commit' 2019-05-13 23:50:35 +09:00
config.c Merge branch 'jk/save-getenv-result' 2019-01-29 12:47:54 -08:00
count-objects.c rename "alternate_object_database" to "object_directory" 2018-11-13 14:22:02 +09:00
credential.c
describe.c Merge branch 'ss/describe-dirty-in-the-right-directory' 2019-02-06 22:05:29 -08:00
diff-files.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
diff-index.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
diff-tree.c Merge branch 'en/combined-all-paths' 2019-03-07 09:59:54 +09:00
diff.c Merge branch 'nd/diff-parseopt-4' 2019-04-25 16:41:12 +09:00
difftool.c Merge branch 'js/difftool-no-index' 2019-05-19 16:45:35 +09:00
fast-export.c Merge branch 'en/fast-export-import' 2019-01-04 13:33:33 -08:00
fetch-pack.c fetch_pack(): drop unused parameters 2019-03-20 18:34:09 +09:00
fetch.c Merge branch 'jk/no-sigpipe-during-network-transport' 2019-03-20 15:16:06 +09:00
fmt-merge-msg.c Merge branch 'nd/the-index' 2018-10-19 13:34:02 +09:00
for-each-ref.c parse_opt_ref_sorting: always use with NONEG flag 2019-03-21 12:03:35 +09:00
fsck.c Merge branch 'jk/fsck-doc' 2019-03-20 15:16:06 +09:00
gc.c gc: handle & check gc.reflogExpire config 2019-04-01 12:51:51 +09:00
get-tar-commit-id.c builtin/get-tar-commit-id: make hash size independent 2019-04-01 11:57:39 +09:00
grep.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
hash-object.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
help.c completion: add more parameter value completion 2019-02-20 12:31:56 -08:00
index-pack.c index-pack: show progress while checking objects 2019-04-01 18:08:05 +09:00
init-db.c Merge branch 'nd/init-relative-template-fix' 2019-06-13 13:18:46 -07:00
interpret-trailers.c assert NOARG/NONEG behavior of parse-options callbacks 2018-11-06 12:56:29 +09:00
log.c format-patch: make --base patch-id output stable 2019-05-08 19:27:43 +09:00
ls-files.c Merge branch 'tg/ls-files-debug-format-fix' 2019-04-25 16:41:20 +09:00
ls-remote.c parse_opt_ref_sorting: always use with NONEG flag 2019-03-21 12:03:35 +09:00
ls-tree.c Merge branch 'nd/attr-pathspec-in-tree-walk' 2019-01-14 15:29:28 -08:00
mailinfo.c
mailsplit.c
merge-base.c Merge branch 'pk/rebase-in-c-4-opts' 2018-11-02 11:04:55 +09:00
merge-file.c assert NOARG/NONEG behavior of parse-options callbacks 2018-11-06 12:56:29 +09:00
merge-index.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
merge-ours.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
merge-recursive.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
merge-tree.c Merge branch 'nd/the-index-final' 2019-02-06 22:05:23 -08:00
merge.c cherry-pick/revert: add scissors line on merge conflict 2019-04-19 12:05:36 +09:00
mktag.c object-store: move object access functions to object-store.h 2018-05-16 11:42:03 +09:00
mktree.c mktree: drop unused length parameter 2019-05-13 14:22:54 +09:00
multi-pack-index.c midx: pass a repository pointer 2019-05-07 13:48:41 +09:00
mv.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
name-rev.c name-rev: drop unused parameters from is_better_name() 2019-05-13 14:22:54 +09:00
notes.c Merge branch 'nd/the-index' into md/list-objects-filter-by-depth 2019-01-15 15:38:29 -08:00
pack-objects.c Merge branch 'jk/unused-params-final-batch' 2019-06-13 13:19:34 -07:00
pack-redundant.c object-store: rename and expand packed_git's sha1 member 2019-04-01 11:57:38 +09:00
pack-refs.c Honor core.precomposeUnicode in more places 2019-04-26 10:54:03 +09:00
patch-id.c format-patch: make --base patch-id output stable 2019-05-08 19:27:43 +09:00
prune-packed.c Merge branch 'rj/prune-packed-excess-args' 2019-03-07 09:59:55 +09:00
prune.c prune: check SEEN flag for reachability 2019-02-14 15:25:33 -08:00
pull.c Merge branch 'dl/merge-cleanup-scissors-fix' 2019-05-09 00:37:24 +09:00
push.c Merge branch 'nd/style-opening-brace' 2019-01-18 13:49:52 -08:00
range-diff.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
read-tree.c cmd_{read,write}_tree: rename "unused" variable that is used 2019-05-13 14:22:53 +09:00
rebase.c Merge branch 'jk/unused-params-final-batch' 2019-06-13 13:19:34 -07:00
receive-pack.c receive-pack: drop unused "commands" from prepare_shallow_update() 2019-05-13 14:22:54 +09:00
reflog.c Merge branch 'jk/loose-object-cache-oid' 2019-02-06 22:05:27 -08:00
remote-ext.c
remote-fd.c
remote.c remove_all_fetch_refspecs(): drop unused "remote" parameter 2019-05-13 14:22:54 +09:00
repack.c repack: enable bitmaps by default on bare repos 2019-03-18 14:09:54 +09:00
replace.c Merge branch 'cc/replace-graft-peel-tags' 2019-05-09 00:37:24 +09:00
rerere.c Merge branch 'nd/the-index' into md/list-objects-filter-by-depth 2019-01-15 15:38:29 -08:00
reset.c Merge branch 'bp/post-index-change-hook' 2019-04-25 16:41:11 +09:00
rev-list.c rev-list: drop unused void pointer from finish_commit() 2019-05-13 14:22:54 +09:00
rev-parse.c cache.h: flip NO_THE_INDEX_COMPATIBILITY_MACROS switch 2019-01-24 11:55:06 -08:00
revert.c cherry-pick/revert: add scissors line on merge conflict 2019-04-19 12:05:36 +09:00
rm.c submodule: drop unused prefix parameter from some functions 2019-05-13 14:22:54 +09:00
send-pack.c pack-protocol.txt: accept error packets in any context 2019-01-02 13:05:30 -08:00
shortlog.c Merge branch 'nd/show-gitcomp-compilation-fix' into maint 2018-12-15 12:24:33 +09:00
show-branch.c show-branch: drop unused parameter from show_independent() 2019-05-13 14:22:54 +09:00
show-index.c make show-index a builtin 2018-05-29 00:28:22 +09:00
show-ref.c Merge branch 'en/unicode-in-refnames' 2019-05-19 16:45:30 +09:00
stash.c Merge branch 'jk/unused-params-even-more' 2019-04-25 16:41:12 +09:00
stripspace.c stripspace: allow -s/-c outside git repository 2018-12-26 15:41:47 -08:00
submodule--helper.c Merge branch 'jk/unused-params-final-batch' 2019-06-13 13:19:34 -07:00
symbolic-ref.c
tag.c Merge branch 'dl/warn-tagging-a-tag' 2019-05-19 16:45:26 +09:00
unpack-file.c object-store: move object access functions to object-store.h 2018-05-16 11:42:03 +09:00
unpack-objects.c convert "hashcmp() != 0" to "!hasheq()" 2018-08-29 11:32:49 -07:00
update-index.c Merge branch 'en/merge-directory-renames' 2019-05-09 00:37:22 +09:00
update-ref.c update-ref: allow --no-deref with --stdin 2018-09-12 15:17:17 -07:00
update-server-info.c parse-options: let OPT__FORCE take optional flags argument 2018-02-09 10:24:50 -08:00
upload-archive.c archive: initialize archivers earlier 2018-10-26 10:17:59 +09:00
upload-pack.c builtin: consistently pass cmd_* prefix to parse_options 2019-05-13 14:22:53 +09:00
var.c
verify-commit.c verify-commit: simplify parameters to run_gpg_verify() 2019-05-13 14:22:54 +09:00
verify-pack.c
verify-tag.c ref-filter: use "struct object_id" consistently 2018-04-09 06:14:45 +09:00
worktree.c Merge branch 'ms/worktree-add-atomic-mkdir' 2019-04-10 02:14:24 +09:00
write-tree.c cmd_{read,write}_tree: rename "unused" variable that is used 2019-05-13 14:22:53 +09:00