## Summary - pass split filesystem sandbox policy/cwd through apply_patch contexts, while omitting legacy-equivalent policies to keep payloads small - keep the fs helper compatible with legacy Landlock by avoiding helper read-root permission expansion in that mode and disabling helper network access ## Root Cause `d626dc38950fb40a1a5ad0a8ffab2485e3348c53` routed exec-server filesystem operations through a sandboxed helper. That path forwarded legacy Landlock into a helper policy shape that could require direct split-policy enforcement. Sandboxed `apply_patch` hit that edge through the filesystem abstraction. The same 0.121 edit-regression path is consistent with #18354: normal writes route through the `apply_patch` filesystem helper, fail under sandbox, and then surface the generic retry-without-sandbox prompt. Fixes #18069 Fixes #18354 ## Validation - `cd codex-rs && just fmt` - earlier branch validation before merging current `origin/main` and dropping the now-separate PATH fix: - `cd codex-rs && cargo test -p codex-exec-server` - `cd codex-rs && cargo test -p codex-core file_system_sandbox_context` - `cd codex-rs && just fix -p codex-exec-server` - `cd codex-rs && just fix -p codex-core` - `git diff --check` - `cd codex-rs && cargo clean` --------- Co-authored-by: Codex <noreply@openai.com>
npm i -g @openai/codex
or brew install --cask codex
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
Install globally with your preferred package manager:
# 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.
