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## Why This is the configuration/model half of the alternative permissions migration we discussed as a comparison point for [#22401](https://github.com/openai/codex/pull/22401) and [#22402](https://github.com/openai/codex/pull/22402). The old `workspace-write` model mixes three concerns that we want to keep separate: - reusable profile rules that should stay immutable once selected - user/runtime workspace roots from `cwd`, `--add-dir`, and legacy workspace-write config - internal Codex writable roots such as memories, which should not be shown as user workspace roots This PR gives permission profiles first-class `workspace_roots` so users can opt multiple repositories into the same `:workspace_roots` rules without using broad absolute-path write grants. It also starts separating the raw selected profile from the effective runtime profile by making `Permissions` expose explicit accessors instead of public mutable fields. A representative `config.toml` looks like this: ```toml default_permissions = "dev" [permissions.dev.workspace_roots] "~/code/openai" = true "~/code/developers-website" = true [permissions.dev.filesystem.":workspace_roots"] "." = "write" ".codex" = "read" ".git" = "read" ".vscode" = "read" ``` If Codex starts in `~/code/codex` with that profile selected, the effective workspace-root set becomes: - `~/code/codex` from the runtime `cwd` - `~/code/openai` from the profile - `~/code/developers-website` from the profile The `:workspace_roots` rules are materialized across each root, so `.git`, `.codex`, and `.vscode` stay scoped the same way everywhere. Runtime additions such as `--add-dir` can still layer on later stack entries without mutating the selected profile. ## Stack Shape This PR intentionally stops before the profile-identity cleanup in [#22683](https://github.com/openai/codex/pull/22683) so the base review stays focused on config loading, workspace-root materialization, and compatibility with legacy `workspace-write`. The representation in this PR is therefore transitional: `Permissions` carries enough state to distinguish the raw constrained profile from the effective runtime profile, and there are still call sites that must keep the active profile identity and constrained profile value in sync. The follow-up PR replaces that with a single resolved profile state (`ResolvedPermissionProfile` / `PermissionProfileState`) that keeps the profile id, immutable `PermissionProfile`, and profile-declared workspace roots together. That follow-up removes APIs such as `set_constrained_permission_profile_with_active_profile()` where separate arguments could drift out of sync. Downstream PRs then build on this base to switch app-server turn updates to profile ids plus runtime workspace roots and to finish the user-visible summary behavior. Reviewers should judge this PR as the workspace-roots foundation, not as the final in-memory shape of selected permission profiles. ## Review Guide Suggested review order: 1. Start with `codex-rs/core/src/config/mod.rs`. This is the main shape change in the base slice. `Permissions` now stores a private raw `Constrained<PermissionProfile>` plus runtime `workspace_roots`. Callers use `permission_profile()` when they need the raw constrained value and `effective_permission_profile()` when they need a materialized runtime profile. As noted above, [#22683](https://github.com/openai/codex/pull/22683) replaces this transitional shape with a resolved profile state that keeps identity and profile data together. 2. Review `codex-rs/config/src/permissions_toml.rs` and `codex-rs/core/src/config/permissions.rs`. These add `[permissions.<id>.workspace_roots]`, resolve enabled entries relative to the policy cwd, and keep `:workspace_roots` deny-read glob patterns symbolic until the actual roots are known. 3. Review `codex-rs/protocol/src/permissions.rs` and `codex-rs/protocol/src/models.rs`. These add the policy/profile materialization helpers that expand exact `:workspace_roots` entries and scoped deny-read globs over every workspace root. This is also where `ActivePermissionProfileModification` is removed from the core model. 4. Review the legacy bridge in `Config::load_from_base_config_with_overrides` and `Config::set_legacy_sandbox_policy`. This is where legacy `workspace-write` roots become runtime workspace roots, while Codex internal writable roots stay internal and do not appear as user-facing workspace roots. 5. Then skim downstream call sites. The interesting pattern is raw-vs-effective access: state/proxy/bwrap paths keep the raw constrained profile, while execution, summaries, and user-visible status use the effective profile and workspace-root list. ## What Changed - added `[permissions.<id>.workspace_roots]` to the config model and schema - added runtime `workspace_roots` state to `Config`/`Permissions` and `ConfigOverrides` - made `Permissions` profile fields private and replaced direct mutation with accessors/setters - added `PermissionProfile` and `FileSystemSandboxPolicy` helpers for materializing `:workspace_roots` exact paths and deny-read globs across all roots - moved legacy additional writable roots into runtime workspace-root state instead of active profile modifications - removed `ActivePermissionProfileModification` and its app-server protocol/schema export - updated sandbox/status summary paths so internal writable roots are not reported as user workspace roots ## Verification Strategy The targeted tests cover the behavior at the layers where regressions are most likely: - `codex-rs/core/src/config/config_tests.rs` verifies config loading, legacy workspace-root seeding, effective profile materialization, and memory-root handling. - `codex-rs/core/src/config/permissions_tests.rs` verifies profile `workspace_roots` parsing and `:workspace_roots` scoped/glob compilation. - `codex-rs/protocol/src/permissions.rs` unit tests verify exact and glob materialization over multiple workspace roots. - `codex-rs/tui/src/status/tests.rs` and `codex-rs/utils/sandbox-summary/src/sandbox_summary.rs` verify the user-facing summaries show effective workspace roots and hide internal writes. I also ran `cargo check --tests` locally after the latest stack refresh to catch cross-crate API breakage from the private-field/accessor changes. --- [//]: # (BEGIN SAPLING FOOTER) Stack created with [Sapling](https://sapling-scm.com). Best reviewed with [ReviewStack](https://reviewstack.dev/openai/codex/pull/22610). * #22612 * #22611 * #22683 * __->__ #22610
codex-protocol
This crate defines the "types" for the protocol used by Codex CLI, which includes both "internal types" for communication between codex-core and codex-tui, as well as "external types" used with codex app-server.
This crate should have minimal dependencies.
Ideally, we should avoid "material business logic" in this crate, as we can always introduce Ext-style traits to add functionality to types in other crates.