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Merge branch 'tb/mingw-rmdir-symlink-to-directory'

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Windows rmdir() equivalent behaves differently from POSIX ones in
that when used on a symbolic link that points at a directory, the
target directory gets removed, which has been corrected.

* tb/mingw-rmdir-symlink-to-directory:
  mingw: align symlinks-related rmdir() behavior with Linux
This commit is contained in:
Junio C Hamano 2021-08-04 13:28:56 -07:00
commit 099a64aa39
3 changed files with 37 additions and 0 deletions
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21
compat/mingw.c
View file

@ -341,6 +341,27 @@ int mingw_rmdir(const char *pathname)
{
int ret, tries = 0;
wchar_t wpathname[MAX_PATH];
struct stat st;
/*
* Contrary to Linux' `rmdir()`, Windows' _wrmdir() and _rmdir()
* (and `RemoveDirectoryW()`) will attempt to remove the target of a
* symbolic link (if it points to a directory).
*
* This behavior breaks the assumption of e.g. `remove_path()` which
* upon successful deletion of a file will attempt to remove its parent
* directories recursively until failure (which usually happens when
* the directory is not empty).
*
* Therefore, before calling `_wrmdir()`, we first check if the path is
* a symbolic link. If it is, we exit and return the same error as
* Linux' `rmdir()` would, i.e. `ENOTDIR`.
*/
if (!mingw_lstat(pathname, &st) && S_ISLNK(st.st_mode)) {
errno = ENOTDIR;
return -1;
}
if (xutftowcs_path(wpathname, pathname) < 0)
return -1;

10
t/t3400-rebase.sh
View file

@ -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

6
t/test-lib.sh
View file

@ -1545,6 +1545,12 @@ test_lazy_prereq SYMLINKS '
ln -s x y && test -h y
'
test_lazy_prereq SYMLINKS_WINDOWS '
# test whether symbolic links are enabled on Windows
test_have_prereq MINGW &&
cmd //c "mklink y x" &> /dev/null && test -h y
'
test_lazy_prereq FILEMODE '
test "$(git config --bool core.filemode)" = true
'