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## Why The legacy unelevated Windows sandbox allowed tools to create and update files in workspace-write roots, but it could not delete files that already existed there. This breaks operations such as `apply_patch` file deletion and replacement in the workspace, `TEMP`, and `TMP`. The delete grant must also preserve deny-write carveouts. Granting `FILE_DELETE_CHILD` on a writable parent would let the sandbox remove protected children such as `.git` or an explicit read-only subpath even when those children have direct deny ACEs. This addresses the delete-failure variant reported in #30009 and #30712. It does not claim to fix their separate split-root setup, elevated-helper, or proxy-related failure modes. ## What Changed - Give writable-root capability ACEs inheritable `DELETE` rights without granting parent-level `FILE_DELETE_CHILD`, so descendants can be removed while protected children remain protected. - Replace stale write ACEs that still contain `FILE_DELETE_CHILD`, and make elevated setup detect and refresh that unsafe legacy state. - Keep read-only capability handling unchanged. - Add Windows regressions covering pre-existing files in the workspace, `TEMP`, and `TMP`, plus protected `.git` and outside-root controls. The core ACL behavior is in [`acl.rs`](767540eec3/codex-rs/windows-sandbox-rs/src/acl.rs (L303-L438)), stale-ACE detection is in [`setup_main/win.rs`](767540eec3/codex-rs/windows-sandbox-rs/src/bin/setup_main/win.rs (L163-L179)), and the end-to-end regression is in [`unified_exec/tests.rs`](767540eec3/codex-rs/windows-sandbox-rs/src/unified_exec/tests.rs (L458-L568)). ## How to Test On Windows: 1. Start Codex with the legacy unelevated Windows sandbox and a workspace-write permission profile. 2. Seed pre-existing files in the workspace, `TEMP`, and `TMP`; also create a sibling file outside the writable roots and a protected `.git` directory. 3. Delete the three files inside writable roots through a sandboxed command or `apply_patch`. 4. Confirm the writable-root files are deleted, while the outside-root file and protected `.git` directory remain intact. Targeted tests: - `just test -p codex-windows-sandbox` - Windows-only `legacy_workspace_write_delete_is_limited_to_writable_roots` - Windows-only `write_root_refresh_replaces_stale_delete_child_grant` The final SHA passed all 31 required checks, including the Windows Bazel test matrix, in [run 28886245161](https://github.com/openai/codex/actions/runs/28886245161).
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.