42 lines
1.0 KiB
Python
42 lines
1.0 KiB
Python
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import contextlib
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import shutil
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import subprocess
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import time
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from collections.abc import Iterator
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from pathlib import Path
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from ..errors import ClanError
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from ..nix import nix_shell
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@contextlib.contextmanager
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def start_virtiofsd(socket_path: Path) -> Iterator[None]:
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sandbox = "namespace"
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if shutil.which("newuidmap") is None:
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sandbox = "none"
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virtiofsd = nix_shell(
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["nixpkgs#virtiofsd"],
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[
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"virtiofsd",
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"--socket-path",
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str(socket_path),
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"--cache",
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"always",
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"--sandbox",
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sandbox,
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"--shared-dir",
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"/nix/store",
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],
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)
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with subprocess.Popen(virtiofsd) as proc:
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try:
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while not socket_path.exists():
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rc = proc.poll()
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if rc is not None:
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msg = f"virtiofsd exited unexpectedly with code {rc}"
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raise ClanError(msg)
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time.sleep(0.1)
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yield
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finally:
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proc.kill()
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