[PATCH 0/5] Directory traversal fixes

This patchset fixes a few directory traversal issues, where fill_directory() would traverse into directories that it shouldn't and not traverse into directories that it should. One of these issues was reported recently on this list[1], another was found at $DAYJOB.

The fifth patch might have backward compatibility implications, but is easy to review. Even if the logic in dir.c makes your eyes glaze over, at least take a look at the fifth patch.

Also, if anyone has any ideas about a better place to put the "Some sidenotes" from the third commit message rather than keeping them in a random commit message, that might be helpful too.

[1] See https://lore.kernel.org/git/DM6PR00MB06829EC5B85E0C5AC595004E894E9@DM6PR00MB0682.namprd00.prod.outlook.com/ or alternatively https://github.com/git-for-windows/git/issues/2732.

Elijah Newren (5):
  t7300: add testcase showing unnecessary traversal into ignored
    directory
  t3001, t7300: add testcase showcasing missed directory traversal
  dir: avoid unnecessary traversal into ignored directory
  dir: traverse into untracked directories if they may have ignored
    subfiles
  [RFC] ls-files: error out on -i unless -o or -c are specified

 builtin/ls-files.c                 |  3 ++
 dir.c                              | 50 ++++++++++++++++---------
 t/t1306-xdg-files.sh               |  2 +-
 t/t3001-ls-files-others-exclude.sh |  5 +++
 t/t3003-ls-files-exclude.sh        |  4 +-
 t/t7300-clean.sh                   | 59 ++++++++++++++++++++++++++++++
 6 files changed, 103 insertions(+), 20 deletions(-)

base-commit: 311531c9de557d25ac087c1637818bd2aad6eb3a
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-1020%2Fnewren%2Fdirectory-traversal-fixes-v1
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-1020/newren/directory-traversal-fixes-v1
Pull-Request: https://github.com/git/git/pull/1020