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## Why Windows managed filesystem permissions can now be backed by a real Windows sandbox. `exec-policy` was still treating the managed read-only policy shape as if there were never a sandbox backend, so benign unmatched commands such as PowerShell directory listings could be rejected with `blocked by policy` even when `windows.sandbox` was enabled. The inverse case still needs to stay conservative: when the Windows sandbox backend is disabled, managed filesystem restrictions are only configuration intent, not an enforced filesystem boundary. That applies to writable-root restricted profiles too, not just read-only profiles. ## What Changed - Thread the effective `WindowsSandboxLevel` into exec-policy approval decisions for shell, unified exec, and intercepted shell exec paths. - Treat managed restricted filesystem profiles as lacking sandbox protection only on Windows when `WindowsSandboxLevel::Disabled`. - Exclude full-disk-write profiles from that no-backend path because they do not rely on filesystem sandbox enforcement. - Remove the cwd-sensitive read-only heuristic and the now-stale cwd plumbing from exec-policy approval contexts. - Add Windows coverage for both enabled-sandbox and disabled-backend behavior, including a writable-root managed profile. ## Validation - Added/updated `exec_policy` coverage for managed filesystem restrictions, full-disk-write exclusion, enabled Windows sandbox behavior, and disabled-backend read-only/writable-root behavior. - `just test -p codex-core exec_policy` — 100 passed, 10 leaky - Empirical local `codex exec` probe with `--sandbox read-only -c 'windows.sandbox="unelevated"'`: PowerShell directory listing completed successfully. - Disabled-backend control with Windows sandbox cleared: the same command was rejected with `blocked by policy`.
82b15b65e2
·
2026-06-05 11:20:52 -07:00
7,185 Commits
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.