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protocol: canonicalize file system permissions (#18274)

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## Why

`PermissionProfile` needs stable, canonical file-system semantics before
it can become the primary runtime permissions abstraction. Without a
canonical form, callers have to keep re-deriving legacy sandbox maps and
profile comparisons remain lossy or order-dependent.

## What changed

This adds canonicalization helpers for `FileSystemPermissions` and
`PermissionProfile`, expands special paths into explicit sandbox
entries, and updates permission request/conversion paths to consume
those canonical entries. It also tightens the legacy bridge so root-wide
write profiles with narrower carveouts are not silently projected as
full-disk legacy access.

## Verification

- `cargo test -p codex-protocol
root_write_with_read_only_child_is_not_full_disk_write -- --nocapture`
- `cargo test -p codex-sandboxing permission -- --nocapture`
- `cargo test -p codex-tui permissions -- --nocapture`
This commit is contained in:
Michael Bolin
2026-04-20 09:57:03 -07:00
committed by GitHub
parent ac7c9a685f
commit dcec516313
41 changed files with 2076 additions and 385 deletions
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220
codex-rs/app-server-protocol/schema/json/CommandExecutionRequestApprovalParams.json
View File

@@ -7,6 +7,15 @@
},
"AdditionalFileSystemPermissions": {
"properties": {
"entries": {
"items": {
"$ref": "#/definitions/FileSystemSandboxEntry"
},
"type": [
"array",
"null"
]
},
"read": {
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
@@ -253,6 +262,217 @@
}
]
},
"FileSystemAccessMode": {
"enum": [
"read",
"write",
"none"
],
"type": "string"
},
"FileSystemPath": {
"oneOf": [
{
"properties": {
"path": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": {
"enum": [
"path"
],
"title": "PathFileSystemPathType",
"type": "string"
}
},
"required": [
"path",
"type"
],
"title": "PathFileSystemPath",
"type": "object"
},
{
"properties": {
"pattern": {
"type": "string"
},
"type": {
"enum": [
"glob_pattern"
],
"title": "GlobPatternFileSystemPathType",
"type": "string"
}
},
"required": [
"pattern",
"type"
],
"title": "GlobPatternFileSystemPath",
"type": "object"
},
{
"properties": {
"type": {
"enum": [
"special"
],
"title": "SpecialFileSystemPathType",
"type": "string"
},
"value": {
"$ref": "#/definitions/FileSystemSpecialPath"
}
},
"required": [
"type",
"value"
],
"title": "SpecialFileSystemPath",
"type": "object"
}
]
},
"FileSystemSandboxEntry": {
"properties": {
"access": {
"$ref": "#/definitions/FileSystemAccessMode"
},
"path": {
"$ref": "#/definitions/FileSystemPath"
}
},
"required": [
"access",
"path"
],
"type": "object"
},
"FileSystemSpecialPath": {
"oneOf": [
{
"properties": {
"kind": {
"enum": [
"root"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "RootFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"minimal"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "MinimalFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"current_working_directory"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "CurrentWorkingDirectoryFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"project_roots"
],
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind"
],
"title": "KindFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"tmpdir"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "TmpdirFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"slash_tmp"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "SlashTmpFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"unknown"
],
"type": "string"
},
"path": {
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind",
"path"
],
"type": "object"
}
]
},
"NetworkApprovalContext": {
"properties": {
"host": {

220
codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalParams.json
View File

@@ -7,6 +7,15 @@
},
"AdditionalFileSystemPermissions": {
"properties": {
"entries": {
"items": {
"$ref": "#/definitions/FileSystemSandboxEntry"
},
"type": [
"array",
"null"
]
},
"read": {
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
@@ -39,6 +48,217 @@
},
"type": "object"
},
"FileSystemAccessMode": {
"enum": [
"read",
"write",
"none"
],
"type": "string"
},
"FileSystemPath": {
"oneOf": [
{
"properties": {
"path": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": {
"enum": [
"path"
],
"title": "PathFileSystemPathType",
"type": "string"
}
},
"required": [
"path",
"type"
],
"title": "PathFileSystemPath",
"type": "object"
},
{
"properties": {
"pattern": {
"type": "string"
},
"type": {
"enum": [
"glob_pattern"
],
"title": "GlobPatternFileSystemPathType",
"type": "string"
}
},
"required": [
"pattern",
"type"
],
"title": "GlobPatternFileSystemPath",
"type": "object"
},
{
"properties": {
"type": {
"enum": [
"special"
],
"title": "SpecialFileSystemPathType",
"type": "string"
},
"value": {
"$ref": "#/definitions/FileSystemSpecialPath"
}
},
"required": [
"type",
"value"
],
"title": "SpecialFileSystemPath",
"type": "object"
}
]
},
"FileSystemSandboxEntry": {
"properties": {
"access": {
"$ref": "#/definitions/FileSystemAccessMode"
},
"path": {
"$ref": "#/definitions/FileSystemPath"
}
},
"required": [
"access",
"path"
],
"type": "object"
},
"FileSystemSpecialPath": {
"oneOf": [
{
"properties": {
"kind": {
"enum": [
"root"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "RootFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"minimal"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "MinimalFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"current_working_directory"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "CurrentWorkingDirectoryFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"project_roots"
],
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind"
],
"title": "KindFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"tmpdir"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "TmpdirFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"slash_tmp"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "SlashTmpFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"unknown"
],
"type": "string"
},
"path": {
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind",
"path"
],
"type": "object"
}
]
},
"RequestPermissionProfile": {
"additionalProperties": false,
"properties": {

220
codex-rs/app-server-protocol/schema/json/PermissionsRequestApprovalResponse.json
View File

@@ -7,6 +7,15 @@
},
"AdditionalFileSystemPermissions": {
"properties": {
"entries": {
"items": {
"$ref": "#/definitions/FileSystemSandboxEntry"
},
"type": [
"array",
"null"
]
},
"read": {
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
@@ -39,6 +48,217 @@
},
"type": "object"
},
"FileSystemAccessMode": {
"enum": [
"read",
"write",
"none"
],
"type": "string"
},
"FileSystemPath": {
"oneOf": [
{
"properties": {
"path": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": {
"enum": [
"path"
],
"title": "PathFileSystemPathType",
"type": "string"
}
},
"required": [
"path",
"type"
],
"title": "PathFileSystemPath",
"type": "object"
},
{
"properties": {
"pattern": {
"type": "string"
},
"type": {
"enum": [
"glob_pattern"
],
"title": "GlobPatternFileSystemPathType",
"type": "string"
}
},
"required": [
"pattern",
"type"
],
"title": "GlobPatternFileSystemPath",
"type": "object"
},
{
"properties": {
"type": {
"enum": [
"special"
],
"title": "SpecialFileSystemPathType",
"type": "string"
},
"value": {
"$ref": "#/definitions/FileSystemSpecialPath"
}
},
"required": [
"type",
"value"
],
"title": "SpecialFileSystemPath",
"type": "object"
}
]
},
"FileSystemSandboxEntry": {
"properties": {
"access": {
"$ref": "#/definitions/FileSystemAccessMode"
},
"path": {
"$ref": "#/definitions/FileSystemPath"
}
},
"required": [
"access",
"path"
],
"type": "object"
},
"FileSystemSpecialPath": {
"oneOf": [
{
"properties": {
"kind": {
"enum": [
"root"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "RootFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"minimal"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "MinimalFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"current_working_directory"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "CurrentWorkingDirectoryFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"project_roots"
],
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind"
],
"title": "KindFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"tmpdir"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "TmpdirFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"slash_tmp"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "SlashTmpFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"unknown"
],
"type": "string"
},
"path": {
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind",
"path"
],
"type": "object"
}
]
},
"GrantedPermissionProfile": {
"properties": {
"fileSystem": {

220
codex-rs/app-server-protocol/schema/json/ServerRequest.json
View File

@@ -7,6 +7,15 @@
},
"AdditionalFileSystemPermissions": {
"properties": {
"entries": {
"items": {
"$ref": "#/definitions/FileSystemSandboxEntry"
},
"type": [
"array",
"null"
]
},
"read": {
"items": {
"$ref": "#/definitions/AbsolutePathBuf"
@@ -586,6 +595,217 @@
],
"type": "object"
},
"FileSystemAccessMode": {
"enum": [
"read",
"write",
"none"
],
"type": "string"
},
"FileSystemPath": {
"oneOf": [
{
"properties": {
"path": {
"$ref": "#/definitions/AbsolutePathBuf"
},
"type": {
"enum": [
"path"
],
"title": "PathFileSystemPathType",
"type": "string"
}
},
"required": [
"path",
"type"
],
"title": "PathFileSystemPath",
"type": "object"
},
{
"properties": {
"pattern": {
"type": "string"
},
"type": {
"enum": [
"glob_pattern"
],
"title": "GlobPatternFileSystemPathType",
"type": "string"
}
},
"required": [
"pattern",
"type"
],
"title": "GlobPatternFileSystemPath",
"type": "object"
},
{
"properties": {
"type": {
"enum": [
"special"
],
"title": "SpecialFileSystemPathType",
"type": "string"
},
"value": {
"$ref": "#/definitions/FileSystemSpecialPath"
}
},
"required": [
"type",
"value"
],
"title": "SpecialFileSystemPath",
"type": "object"
}
]
},
"FileSystemSandboxEntry": {
"properties": {
"access": {
"$ref": "#/definitions/FileSystemAccessMode"
},
"path": {
"$ref": "#/definitions/FileSystemPath"
}
},
"required": [
"access",
"path"
],
"type": "object"
},
"FileSystemSpecialPath": {
"oneOf": [
{
"properties": {
"kind": {
"enum": [
"root"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "RootFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"minimal"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "MinimalFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"current_working_directory"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "CurrentWorkingDirectoryFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"project_roots"
],
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind"
],
"title": "KindFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"tmpdir"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "TmpdirFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"slash_tmp"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "SlashTmpFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"unknown"
],
"type": "string"
},
"path": {
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind",
"path"
],
"type": "object"
}
]
},
"McpElicitationArrayType": {
"enum": [
"array"

220
codex-rs/app-server-protocol/schema/json/codex_app_server_protocol.schemas.json
View File

@@ -7,6 +7,15 @@
},
"AdditionalFileSystemPermissions": {
"properties": {
"entries": {
"items": {
"$ref": "#/definitions/FileSystemSandboxEntry"
},
"type": [
"array",
"null"
]
},
"read": {
"items": {
"$ref": "#/definitions/v2/AbsolutePathBuf"
@@ -2251,6 +2260,217 @@
"title": "FileChangeRequestApprovalResponse",
"type": "object"
},
"FileSystemAccessMode": {
"enum": [
"read",
"write",
"none"
],
"type": "string"
},
"FileSystemPath": {
"oneOf": [
{
"properties": {
"path": {
"$ref": "#/definitions/v2/AbsolutePathBuf"
},
"type": {
"enum": [
"path"
],
"title": "PathFileSystemPathType",
"type": "string"
}
},
"required": [
"path",
"type"
],
"title": "PathFileSystemPath",
"type": "object"
},
{
"properties": {
"pattern": {
"type": "string"
},
"type": {
"enum": [
"glob_pattern"
],
"title": "GlobPatternFileSystemPathType",
"type": "string"
}
},
"required": [
"pattern",
"type"
],
"title": "GlobPatternFileSystemPath",
"type": "object"
},
{
"properties": {
"type": {
"enum": [
"special"
],
"title": "SpecialFileSystemPathType",
"type": "string"
},
"value": {
"$ref": "#/definitions/FileSystemSpecialPath"
}
},
"required": [
"type",
"value"
],
"title": "SpecialFileSystemPath",
"type": "object"
}
]
},
"FileSystemSandboxEntry": {
"properties": {
"access": {
"$ref": "#/definitions/FileSystemAccessMode"
},
"path": {
"$ref": "#/definitions/FileSystemPath"
}
},
"required": [
"access",
"path"
],
"type": "object"
},
"FileSystemSpecialPath": {
"oneOf": [
{
"properties": {
"kind": {
"enum": [
"root"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "RootFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"minimal"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "MinimalFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"current_working_directory"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "CurrentWorkingDirectoryFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"project_roots"
],
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind"
],
"title": "KindFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"tmpdir"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "TmpdirFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"slash_tmp"
],
"type": "string"
}
},
"required": [
"kind"
],
"title": "SlashTmpFileSystemSpecialPath",
"type": "object"
},
{
"properties": {
"kind": {
"enum": [
"unknown"
],
"type": "string"
},
"path": {
"type": "string"
},
"subpath": {
"type": [
"string",
"null"
]
}
},
"required": [
"kind",
"path"
],
"type": "object"
}
]
},
"FuzzyFileSearchMatchType": {
"enum": [
"file",

3
codex-rs/app-server-protocol/schema/typescript/v2/AdditionalFileSystemPermissions.ts
View File

@@ -2,5 +2,6 @@
// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
import type { AbsolutePathBuf } from "../AbsolutePathBuf";
import type { FileSystemSandboxEntry } from "./FileSystemSandboxEntry";
export type AdditionalFileSystemPermissions = { read: Array<AbsolutePathBuf> | null, write: Array<AbsolutePathBuf> | null, };
export type AdditionalFileSystemPermissions = { read: Array<AbsolutePathBuf> | null, write: Array<AbsolutePathBuf> | null, entries?: Array<FileSystemSandboxEntry>, };

5
codex-rs/app-server-protocol/schema/typescript/v2/FileSystemAccessMode.ts Normal file
View File

@@ -0,0 +1,5 @@
// GENERATED CODE! DO NOT MODIFY BY HAND!
// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
export type FileSystemAccessMode = "read" | "write" | "none";

7
codex-rs/app-server-protocol/schema/typescript/v2/FileSystemPath.ts Normal file
View File

@@ -0,0 +1,7 @@
// GENERATED CODE! DO NOT MODIFY BY HAND!
// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
import type { AbsolutePathBuf } from "../AbsolutePathBuf";
import type { FileSystemSpecialPath } from "./FileSystemSpecialPath";
export type FileSystemPath = { "type": "path", path: AbsolutePathBuf, } | { "type": "glob_pattern", pattern: string, } | { "type": "special", value: FileSystemSpecialPath, };

7
codex-rs/app-server-protocol/schema/typescript/v2/FileSystemSandboxEntry.ts Normal file
View File

@@ -0,0 +1,7 @@
// GENERATED CODE! DO NOT MODIFY BY HAND!
// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
import type { FileSystemAccessMode } from "./FileSystemAccessMode";
import type { FileSystemPath } from "./FileSystemPath";
export type FileSystemSandboxEntry = { path: FileSystemPath, access: FileSystemAccessMode, };

5
codex-rs/app-server-protocol/schema/typescript/v2/FileSystemSpecialPath.ts Normal file
View File

@@ -0,0 +1,5 @@
// GENERATED CODE! DO NOT MODIFY BY HAND!
// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.
export type FileSystemSpecialPath = { "kind": "root" } | { "kind": "minimal" } | { "kind": "current_working_directory" } | { "kind": "project_roots", subpath: string | null, } | { "kind": "tmpdir" } | { "kind": "slash_tmp" } | { "kind": "unknown", path: string, subpath: string | null, };

4
codex-rs/app-server-protocol/schema/typescript/v2/index.ts
View File

@@ -100,6 +100,10 @@ export type { FileChangeApprovalDecision } from "./FileChangeApprovalDecision";
export type { FileChangeOutputDeltaNotification } from "./FileChangeOutputDeltaNotification";
export type { FileChangeRequestApprovalParams } from "./FileChangeRequestApprovalParams";
export type { FileChangeRequestApprovalResponse } from "./FileChangeRequestApprovalResponse";
export type { FileSystemAccessMode } from "./FileSystemAccessMode";
export type { FileSystemPath } from "./FileSystemPath";
export type { FileSystemSandboxEntry } from "./FileSystemSandboxEntry";
export type { FileSystemSpecialPath } from "./FileSystemSpecialPath";
export type { FileUpdateChange } from "./FileUpdateChange";
export type { FsChangedNotification } from "./FsChangedNotification";
export type { FsCopyParams } from "./FsCopyParams";