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fix: sandbox os.stat, os.mkdir, and os.rmdir to staged root #23

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Merged
bombsimon merged 1 commit into from
Sep 13, 2026
Merged

fix: sandbox os.stat, os.mkdir, and os.rmdir to staged root #23

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15 changes: 15 additions & 0 deletions matrixbox_simulator/device/run_app.py
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Original file line number Diff line number Diff line change
Expand Up @@ -129,6 +129,9 @@ def _install_path_sandbox(root: Path) -> None:
real_listdir = os.listdir
real_remove = os.remove
real_chdir = os.chdir
real_stat = os.stat
real_mkdir = os.mkdir
real_rmdir = os.rmdir

def resolve(path: Any) -> Any:
# Idempotent: a path already inside root (e.g. a real filesystem
Expand Down Expand Up @@ -158,11 +161,23 @@ def sandboxed_remove(path: Any, *args: Any, **kwargs: Any) -> None:
def sandboxed_chdir(path: Any) -> None:
return real_chdir(resolve(path))

def sandboxed_stat(path: Any, *args: Any, **kwargs: Any) -> object:
return real_stat(resolve(path), *args, **kwargs)

def sandboxed_mkdir(path: Any, *args: Any, **kwargs: Any) -> None:
return real_mkdir(resolve(path), *args, **kwargs)

def sandboxed_rmdir(path: Any, *args: Any, **kwargs: Any) -> None:
return real_rmdir(resolve(path), *args, **kwargs)

builtins.open = sandboxed_open # ty: ignore[invalid-assignment]
os.rename = sandboxed_rename # ty: ignore[invalid-assignment]
os.listdir = sandboxed_listdir # ty: ignore[invalid-assignment]
os.remove = sandboxed_remove # ty: ignore[invalid-assignment]
os.chdir = sandboxed_chdir # ty: ignore[invalid-assignment]
os.stat = sandboxed_stat # ty: ignore[invalid-assignment]
os.mkdir = sandboxed_mkdir # ty: ignore[invalid-assignment]
os.rmdir = sandboxed_rmdir # ty: ignore[invalid-assignment]


class _BytesLiteralWrapper(ast.NodeTransformer):
Expand Down