Emily Shaffer 8a6d1724d9 git_superproject: tell git that superproject is bare ...

The superproject is initialized as a bare repo in Superproject:_Init().
That means that later operations must treat it as a bare repository,
specifying the gitdir and setting 'bare' appropriately when launching
GitCommand()s. It's also OK not to specify cwd here because GitCommand()
will drop cwd if bare == True anyways.

With this change, it's possible to run `repo init` and `repo sync` with the
Git config 'safe.bareRepository' set to 'explicit'. This config strengthens
Git's security posture against embedded bare repository attacks like
https://github.com/justinsteven/advisories/blob/main/2022_git_buried_bare_repos_and_fsmonitor_various_abuses.md.

Bug: b/227257481
Change-Id: I954a64c6883d2ca2af9c603e7076fd83b52584e9
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/389794
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: Jason R. Coombs <jaraco@google.com>
Tested-by: Emily Shaffer <emilyshaffer@google.com>
Reviewed-by: Emily Shaffer <emilyshaffer@google.com>
Commit-Queue: Jason R. Coombs <jaraco@google.com>

2023-11-09 22:13:17 +00:00

19 KiB

Raw Blame History

View Raw