Files
dragonpilot/selfdrive/loggerd/xattr_cache.py
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Dragonpilot Team 4d7a40310f dragonpilot 2022-08-11T09:38:43 for EON/C2
version: dragonpilot v0.8.16 beta for EON/C2
date: 2022-08-11T09:38:43
dp-dev(priv2) master commit: c6cd233f23f60e7a6055d42850bc593c0e69082e
2022-08-11 09:48:37 +00:00

26 lines
784 B
Python

# import os
import errno
from typing import Dict, Tuple, Optional
from common.xattr import getxattr as getattr1
from common.xattr import setxattr as setattr1
_cached_attributes: Dict[Tuple, Optional[bytes]] = {}
def getxattr(path: str, attr_name: str) -> Optional[bytes]:
key = (path, attr_name)
if key not in _cached_attributes:
try:
response = getattr1(path, attr_name)
except OSError as e:
# ENODATA means attribute hasn't been set
if e.errno == errno.ENODATA:
response = None
else:
raise
_cached_attributes[key] = response
return _cached_attributes[key]
def setxattr(path: str, attr_name: str, attr_value: bytes) -> None:
_cached_attributes.pop((path, attr_name), None)
return setattr1(path, attr_name, attr_value)