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File Name : filesystem.py

import os
import os.path
import shutil
import stat
from contextlib import contextmanager
from tempfile import NamedTemporaryFile

# NOTE: retrying is not annotated in typeshed as on 2017-07-17, which is
#       why we ignore the type on this import.
from pip._vendor.retrying import retry  # type: ignore
from pip._vendor.six import PY2

from pip._internal.utils.compat import get_path_uid
from pip._internal.utils.misc import cast
from pip._internal.utils.typing import MYPY_CHECK_RUNNING

if MYPY_CHECK_RUNNING:
    from typing import BinaryIO, Iterator

class NamedTemporaryFileResult(BinaryIO):
        @property
        def file(self):
            # type: () -> BinaryIO
            pass

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

def copy2_fixed(src, dest):
    # type: (str, str) -> None
    """Wrap shutil.copy2() but map errors copying socket files to
    SpecialFileError as expected.

See also https://bugs.python.org/issue37700.
    """
    try:
        shutil.copy2(src, dest)
    except (OSError, IOError):
        for f in [src, dest]:
            try:
                is_socket_file = is_socket(f)
            except OSError:
                # An error has already occurred. Another error here is not
                # a problem and we can ignore it.
                pass
            else:
                if is_socket_file:
                    raise shutil.SpecialFileError("`%s` is a socket" % f)

raise

def is_socket(path):
    # type: (str) -> bool
    return stat.S_ISSOCK(os.lstat(path).st_mode)

@contextmanager
def adjacent_tmp_file(path):
    # type: (str) -> Iterator[NamedTemporaryFileResult]
    """Given a path to a file, open a temp file next to it securely and ensure
    it is written to disk after the context reaches its end.
    """
    with NamedTemporaryFile(
        delete=False,
        dir=os.path.dirname(path),
        prefix=os.path.basename(path),
        suffix='.tmp',
    ) as f:
        result = cast('NamedTemporaryFileResult', f)
        try:
            yield result
        finally:
            result.file.flush()
            os.fsync(result.file.fileno())

_replace_retry = retry(stop_max_delay=1000, wait_fixed=250)

if PY2:
    @_replace_retry
    def replace(src, dest):
        # type: (str, str) -> None
        try:
            os.rename(src, dest)
        except OSError:
            os.remove(dest)
            os.rename(src, dest)

else:
    replace = _replace_retry(os.replace)

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2024-03-06 11:05:10
..	dir	-	root/root	0755	2024-03-06 11:05:10
__pycache__	dir	-	root/root	0755	2024-03-06 11:05:10
__init__.py	application/x-empty	0 B	root/root	0644	2023-10-17 06:30:24
appdirs.py	text/plain	9.54 KB	root/root	0644	2023-10-17 06:30:24
compat.py	text/plain	9.34 KB	root/root	0644	2023-10-17 06:30:24
deprecation.py	text/plain	3.24 KB	root/root	0644	2023-10-17 06:30:24
encoding.py	text/x-script.python	1.29 KB	root/root	0644	2023-10-17 06:30:24
filesystem.py	text/x-script.python	3.26 KB	root/root	0644	2023-10-17 06:30:24
filetypes.py	text/plain	571 B	root/root	0644	2023-10-17 06:30:24
glibc.py	text/x-script.python	4.29 KB	root/root	0644	2023-10-17 06:30:24
hashes.py	text/x-script.python	3.93 KB	root/root	0644	2023-10-17 06:30:24
inject_securetransport.py	text/plain	810 B	root/root	0644	2023-10-17 06:30:24
logging.py	text/x-script.python	12.73 KB	root/root	0644	2023-10-17 06:30:24
marker_files.py	text/x-script.python	823 B	root/root	0644	2023-10-17 06:30:24
misc.py	text/x-script.python	24.98 KB	root/root	0644	2023-10-17 06:30:24
models.py	text/plain	1.12 KB	root/root	0644	2023-10-17 06:30:24
packaging.py	text/x-script.python	2.96 KB	root/root	0644	2023-10-17 06:30:24
setuptools_build.py	text/x-script.python	1.59 KB	root/root	0644	2023-10-17 06:30:24
subprocess.py	text/x-script.python	9.68 KB	root/root	0644	2023-10-17 06:30:24
temp_dir.py	text/x-script.python	5.39 KB	root/root	0644	2023-10-17 06:30:24
typing.py	text/plain	1.1 KB	root/root	0644	2023-10-17 06:30:24
ui.py	text/x-script.python	13.58 KB	root/root	0644	2023-10-17 06:30:24
unpacking.py	text/plain	9.46 KB	root/root	0644	2023-10-17 06:30:24
urls.py	text/x-script.python	1.45 KB	root/root	0644	2023-10-17 06:30:24
virtualenv.py	text/x-script.python	891 B	root/root	0644	2023-10-17 06:30:24