## Background - follow-up to previous macOS-only PR: https://github.com/openai/codex/pull/11711 - follow-up macOS refactor PR (current structural approach used here): https://github.com/openai/codex/pull/12340 ## Summary - extend `codex-utils-sleep-inhibitor` with Linux and Windows backends while preserving existing macOS behavior - Linux backend: - use `systemd-inhibit` (`--what=idle --mode=block`) when available - fall back to `gnome-session-inhibit` (`--inhibit idle`) when available - keep no-op behavior if neither backend exists on host - Windows backend: - use Win32 power request handles (`PowerCreateRequest` + `PowerSetRequest` / `PowerClearRequest`) with `PowerRequestSystemRequired` - make `prevent_idle_sleep` Experimental on macOS/Linux/Windows; keep under development on other targets ## Testing - `just fmt` - `cargo test -p codex-utils-sleep-inhibitor` - `cargo test -p codex-core features::tests::` - `cargo test -p codex-tui chatwidget::tests::` - `just fix -p codex-utils-sleep-inhibitor` - `just fix -p codex-core` ## Semantics and API references - Goal remains: prevent idle system sleep while a turn is running. - Linux: - `systemd-inhibit` / login1 inhibitor model: - https://www.freedesktop.org/software/systemd/man/latest/systemd-inhibit.html - https://www.freedesktop.org/software/systemd/man/org.freedesktop.login1.html - https://systemd.io/INHIBITOR_LOCKS/ - xdg-desktop-portal Inhibit (relevant for sandboxed apps): - https://flatpak.github.io/xdg-desktop-portal/docs/doc-org.freedesktop.portal.Inhibit.html - Windows: - `PowerCreateRequest`: - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-powercreaterequest - `PowerSetRequest`: - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-powersetrequest - `PowerClearRequest`: - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-powerclearrequest - `SetThreadExecutionState` (alternative baseline API): - https://learn.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-setthreadexecutionstate ## Chromium vs this PR - Chromium Linux backend: - https://github.com/chromium/chromium/blob/main/services/device/wake_lock/power_save_blocker/power_save_blocker_linux.cc - Chromium Windows backend: - https://github.com/chromium/chromium/blob/main/services/device/wake_lock/power_save_blocker/power_save_blocker_win.cc - Electron powerSaveBlocker entry point: - https://github.com/electron/electron/blob/main/shell/browser/api/electron_api_power_save_blocker.cc ## Why we differ from Chromium - Linux implementation mechanism: - Chromium uses in-process D-Bus APIs plus UI-integrated screen-saver suspension. - This PR uses command-based inhibitor backends (`systemd-inhibit`, `gnome-session-inhibit`) instead of linking a Linux D-Bus client in this crate. - Reason: keep `codex-utils-sleep-inhibitor` dependency-light and avoid Linux CI/toolchain fragility from new native D-Bus linkage, while preserving the same runtime intent (hold an inhibitor while a turn runs). - Linux UI integration scope: - Chromium also uses `display::Screen::SuspendScreenSaver()` in its UI stack. - Codex `codex-rs` does not have that display abstraction in this crate, so this PR scopes Linux behavior to process-level sleep inhibition only. - Windows wake-lock type breadth: - Chromium supports both display/system wake-lock types and extra display-specific handling for some pre-Win11 scenarios. - Codex’s feature is scoped to turn execution continuity (not forcing display on), so this PR uses `PowerRequestSystemRequired` only.
codex-core
This crate implements the business logic for Codex. It is designed to be used by the various Codex UIs written in Rust.
Dependencies
Note that codex-core makes some assumptions about certain helper utilities being available in the environment. Currently, this support matrix is:
macOS
Expects /usr/bin/sandbox-exec to be present.
When using the workspace-write sandbox policy, the Seatbelt profile allows
writes under the configured writable roots while keeping .git (directory or
pointer file), the resolved gitdir: target, and .codex read-only.
Network access and filesystem read/write roots are controlled by
SandboxPolicy. Seatbelt consumes the resolved policy and enforces it.
Seatbelt also supports macOS permission-profile extensions layered on top of
SandboxPolicy:
- no extension profile provided:
keeps legacy default preferences read access (
user-preference-read). - extension profile provided with no
macos_preferencesgrant: does not add preferences access clauses. macos_preferences = "readonly": enables cfprefs read clauses anduser-preference-read.macos_preferences = "readwrite": includes readonly clauses plususer-preference-writeand cfprefs shm write clauses.macos_automation = true: enables broad Apple Events send permissions.macos_automation = ["com.apple.Notes", ...]: enables Apple Events send only to listed bundle IDs.macos_accessibility = true: enablescom.apple.axservermach lookup.macos_calendar = true: enablescom.apple.CalendarAgentmach lookup.
Linux
Expects the binary containing codex-core to run the equivalent of codex sandbox linux (legacy alias: codex debug landlock) when arg0 is codex-linux-sandbox. See the codex-arg0 crate for details.
All Platforms
Expects the binary containing codex-core to simulate the virtual apply_patch CLI when arg1 is --codex-run-as-apply-patch. See the codex-arg0 crate for details.