diff options
| author | Thomas Bétous <tomspycell@gmail.com> | 2021-08-03 00:07:30 +0300 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2021-08-03 01:10:58 +0300 |
| commit | 3e7d4888e5b83f1ed75667ff557b8996f427adf0 (patch) | |
| tree | 558f1c282646845fd7a5a406f5b8e286293b29e2 /t/t3400-rebase.sh | |
| parent | ebf3c04b262aa27fbb97f8a0156c2347fecafafb (diff) | |
mingw: align symlinks-related rmdir() behavior with Linux
When performing a rebase, rmdir() is called on the folder .git/logs. On
Unix rmdir() exits without deleting anything in case .git/logs is a
symbolic link but the equivalent functions on Windows (_rmdir, _wrmdir
and RemoveDirectoryW) do not behave the same and remove the folder if it
is symlinked even if it is not empty.
This creates issues when folders in .git/ are symlinks which is
especially the case when git-repo[1] is used: It replaces `.git/logs/`
with a symlink.
One such issue is that the _target_ of that symlink is removed e.g.
during a `git rebase`, where `delete_reflog("REBASE_HEAD")` will not
only try to remove `.git/logs/REBASE_HEAD` but then recursively try to
remove the parent directories until an error occurs, a technique that
obviously relies on `rmdir()` refusing to remove a symlink.
This was reported in https://github.com/git-for-windows/git/issues/2967.
This commit updates mingw_rmdir() so that its behavior is the same as
Linux rmdir() in case of symbolic links.
To verify that Git does not regress on the reported issue, this patch
adds a regression test for the `git rebase` symptom, even if the same
`rmdir()` behavior is quite likely to cause potential problems in other
Git commands as well.
[1]: git-repo is a python tool built on top of Git which helps manage
many Git repositories. It stores all the .git/ folders in a central
place by taking advantage of symbolic links.
More information: https://gerrit.googlesource.com/git-repo/
Signed-off-by: Thomas Bétous <tomspycell@gmail.com>
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t3400-rebase.sh')
| -rwxr-xr-x | t/t3400-rebase.sh | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh index 0bb88aa982..23dbd3c82e 100755 --- a/t/t3400-rebase.sh +++ b/t/t3400-rebase.sh @@ -406,4 +406,14 @@ test_expect_success 'refuse to switch to branch checked out elsewhere' ' test_i18ngrep "already checked out" err ' +test_expect_success MINGW,SYMLINKS_WINDOWS 'rebase when .git/logs is a symlink' ' + git checkout main && + mv .git/logs actual_logs && + cmd //c "mklink /D .git\logs ..\actual_logs" && + git rebase -f HEAD^ && + test -L .git/logs && + rm .git/logs && + mv actual_logs .git/logs +' + test_done |