AL-2020/venv/Lib/site-packages/pip-19.0.3-py3.7.egg/pip/_internal/utils/filesystem.py

31 lines
990 B
Python

import os
import os.path
from pip._internal.utils.compat import get_path_uid
def check_path_owner(path):
# type: (str) -> bool
# If we don't have a way to check the effective uid of this process, then
# we'll just assume that we own the directory.
if not hasattr(os, "geteuid"):
return True
previous = None
while path != previous:
if os.path.lexists(path):
# Check if path is writable by current user.
if os.geteuid() == 0:
# Special handling for root user in order to handle properly
# cases where users use sudo without -H flag.
try:
path_uid = get_path_uid(path)
except OSError:
return False
return path_uid == 0
else:
return os.access(path, os.W_OK)
else:
previous, path = path, os.path.dirname(path)
return False # assume we don't own the path