fix(sandbox): report Windows ACL limits

This commit is contained in:
Tianyi Cui
2026-08-10 14:59:38 +08:00
parent 6648ff984a
commit 9a3c89d04a
20 changed files with 124 additions and 70 deletions
+3 -3
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@@ -2,13 +2,13 @@
English | [中文](sandbox.zh.md)
The process-sandbox seam of [dsh-sandbox](../../packages/sandbox/sandbox) wraps a same-world subprocess argv in a file-effect policy without coupling consumers to a platform runner. [dsh-sandbox-local](../../packages/sandbox/sandbox-local) supplies the Linux bwrap/Landlock and macOS Seatbelt backends; [dsh-bash-sandbox](../../packages/bash/bash-sandbox) is the first consumer. Containers, microVMs, and remote execution are sibling implementations of whole capability seams, not providers of `ctx.sandbox`.
The process-sandbox seam of [dsh-sandbox](../../packages/sandbox/sandbox) wraps a same-world subprocess argv in a file-effect policy without coupling consumers to a platform runner. [dsh-sandbox-local](../../packages/sandbox/sandbox-local) supplies Linux bwrap/Landlock, macOS Seatbelt, and the Windows ACL restricted-token backend; [dsh-bash-sandbox](../../packages/bash/bash-sandbox) and [dsh-pwsh-sandbox](../../packages/bash/pwsh-sandbox) consume it. Containers, microVMs, and remote execution are sibling implementations of whole capability seams, not providers of `ctx.sandbox`.
Source: [`packages/sandbox/sandbox/src/index.ts`](../../packages/sandbox/sandbox/src/index.ts)
## Modes and enforcement
`SandboxMode` governs filesystem effects only. `read-only` denies every write — the POSIX runners additionally grant the `/dev/null` sink their shells require, while the Windows ACL runner grants nothing; `workspace-write` permits writes under the workspace root and the backend's promised temp area; `danger-full-access` bypasses confinement. Network and process visibility are outside this vocabulary.
`SandboxMode` governs filesystem effects only. `read-only` asks the backend to deny writes — the POSIX runners additionally grant the `/dev/null` sink their shells require, while the Windows ACL runner grants no explicit writable root and reports partial enforcement for its ambient ACL gaps; `workspace-write` permits writes under the workspace root and the backend's promised temp area; `danger-full-access` bypasses confinement. Network and process visibility are outside this vocabulary.
```ts type-equiv
/**
@@ -27,7 +27,7 @@ Only the first two modes can be sent to a provider. A `danger-full-access` consu
type ConfinedSandboxMode = Exclude<SandboxMode, 'danger-full-access'>
```
Enforcement is a reported fact. `full` means the backend governs every file effect promised by the mode; `partial` means an active backend or older kernel ABI governs only a subset, so consumers that require the absolute promise must reject or surface that distinction.
Enforcement is a reported fact. `full` means the backend governs every file effect promised by the mode; `partial` means an active backend or older kernel ABI governs only a subset, so consumers that require the absolute promise must reject or surface that distinction. Older Landlock ABIs and the Windows ACL runner's Everyone/hard-link boundaries are current partial cases.
```ts type-equiv
/**