protocol: canonicalize file system permissions (#18274)

## 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

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": {