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2688 lines (2331 loc) · 105 KB
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# Copyright (C) 2003 Python Software Foundation
import unittest
import unittest.mock
import shutil
import tempfile
import sys
import stat
import os
import os.path
import errno
import functools
import pathlib
import subprocess
import random
import string
import contextlib
import io
from shutil import (make_archive,
register_archive_format, unregister_archive_format,
get_archive_formats, Error, unpack_archive,
register_unpack_format, RegistryError,
unregister_unpack_format, get_unpack_formats,
SameFileError, _GiveupOnFastCopy)
import tarfile
import zipfile
try:
import posix
except ImportError:
posix = None
from test import support
from test.support import os_helper
from test.support.os_helper import TESTFN, FakePath
TESTFN2 = TESTFN + "2"
TESTFN_SRC = TESTFN + "_SRC"
TESTFN_DST = TESTFN + "_DST"
MACOS = sys.platform.startswith("darwin")
SOLARIS = sys.platform.startswith("sunos")
AIX = sys.platform[:3] == 'aix'
try:
import grp
import pwd
UID_GID_SUPPORT = True
except ImportError:
UID_GID_SUPPORT = False
try:
import _winapi
except ImportError:
_winapi = None
no_chdir = unittest.mock.patch('os.chdir',
side_effect=AssertionError("shouldn't call os.chdir()"))
def _fake_rename(*args, **kwargs):
# Pretend the destination path is on a different filesystem.
raise OSError(getattr(errno, 'EXDEV', 18), "Invalid cross-device link")
def mock_rename(func):
@functools.wraps(func)
def wrap(*args, **kwargs):
try:
builtin_rename = os.rename
os.rename = _fake_rename
return func(*args, **kwargs)
finally:
os.rename = builtin_rename
return wrap
def write_file(path, content, binary=False):
"""Write *content* to a file located at *path*.
If *path* is a tuple instead of a string, os.path.join will be used to
make a path. If *binary* is true, the file will be opened in binary
mode.
"""
if isinstance(path, tuple):
path = os.path.join(*path)
mode = 'wb' if binary else 'w'
encoding = None if binary else "utf-8"
with open(path, mode, encoding=encoding) as fp:
fp.write(content)
def write_test_file(path, size):
"""Create a test file with an arbitrary size and random text content."""
def chunks(total, step):
assert total >= step
while total > step:
yield step
total -= step
if total:
yield total
bufsize = min(size, 8192)
chunk = b"".join([random.choice(string.ascii_letters).encode()
for i in range(bufsize)])
with open(path, 'wb') as f:
for csize in chunks(size, bufsize):
f.write(chunk)
assert os.path.getsize(path) == size
def read_file(path, binary=False):
"""Return contents from a file located at *path*.
If *path* is a tuple instead of a string, os.path.join will be used to
make a path. If *binary* is true, the file will be opened in binary
mode.
"""
if isinstance(path, tuple):
path = os.path.join(*path)
mode = 'rb' if binary else 'r'
encoding = None if binary else "utf-8"
with open(path, mode, encoding=encoding) as fp:
return fp.read()
def rlistdir(path):
res = []
for name in sorted(os.listdir(path)):
p = os.path.join(path, name)
if os.path.isdir(p) and not os.path.islink(p):
res.append(name + '/')
for n in rlistdir(p):
res.append(name + '/' + n)
else:
res.append(name)
return res
def supports_file2file_sendfile():
# ...apparently Linux and Solaris are the only ones
if not hasattr(os, "sendfile"):
return False
srcname = None
dstname = None
try:
with tempfile.NamedTemporaryFile("wb", dir=os.getcwd(), delete=False) as f:
srcname = f.name
f.write(b"0123456789")
with open(srcname, "rb") as src:
with tempfile.NamedTemporaryFile("wb", dir=os.getcwd(), delete=False) as dst:
dstname = dst.name
infd = src.fileno()
outfd = dst.fileno()
try:
os.sendfile(outfd, infd, 0, 2)
except OSError:
return False
else:
return True
finally:
if srcname is not None:
os_helper.unlink(srcname)
if dstname is not None:
os_helper.unlink(dstname)
SUPPORTS_SENDFILE = supports_file2file_sendfile()
# AIX 32-bit mode, by default, lacks enough memory for the xz/lzma compiler test
# The AIX command 'dump -o program' gives XCOFF header information
# The second word of the last line in the maxdata value
# when 32-bit maxdata must be greater than 0x1000000 for the xz test to succeed
def _maxdataOK():
if AIX and sys.maxsize == 2147483647:
hdrs=subprocess.getoutput("/usr/bin/dump -o %s" % sys.executable)
maxdata=hdrs.split("\n")[-1].split()[1]
return int(maxdata,16) >= 0x20000000
else:
return True
class BaseTest:
def mkdtemp(self, prefix=None):
"""Create a temporary directory that will be cleaned up.
Returns the path of the directory.
"""
d = tempfile.mkdtemp(prefix=prefix, dir=os.getcwd())
self.addCleanup(os_helper.rmtree, d)
return d
class TestRmTree(BaseTest, unittest.TestCase):
def test_rmtree_works_on_bytes(self):
tmp = self.mkdtemp()
victim = os.path.join(tmp, 'killme')
os.mkdir(victim)
write_file(os.path.join(victim, 'somefile'), 'foo')
victim = os.fsencode(victim)
self.assertIsInstance(victim, bytes)
shutil.rmtree(victim)
@os_helper.skip_unless_symlink
def test_rmtree_fails_on_symlink(self):
tmp = self.mkdtemp()
dir_ = os.path.join(tmp, 'dir')
os.mkdir(dir_)
link = os.path.join(tmp, 'link')
os.symlink(dir_, link)
self.assertRaises(OSError, shutil.rmtree, link)
self.assertTrue(os.path.exists(dir_))
self.assertTrue(os.path.lexists(link))
errors = []
def onerror(*args):
errors.append(args)
shutil.rmtree(link, onerror=onerror)
self.assertEqual(len(errors), 1)
self.assertIs(errors[0][0], os.path.islink)
self.assertEqual(errors[0][1], link)
self.assertIsInstance(errors[0][2][1], OSError)
@os_helper.skip_unless_symlink
def test_rmtree_works_on_symlinks(self):
tmp = self.mkdtemp()
dir1 = os.path.join(tmp, 'dir1')
dir2 = os.path.join(dir1, 'dir2')
dir3 = os.path.join(tmp, 'dir3')
for d in dir1, dir2, dir3:
os.mkdir(d)
file1 = os.path.join(tmp, 'file1')
write_file(file1, 'foo')
link1 = os.path.join(dir1, 'link1')
os.symlink(dir2, link1)
link2 = os.path.join(dir1, 'link2')
os.symlink(dir3, link2)
link3 = os.path.join(dir1, 'link3')
os.symlink(file1, link3)
# make sure symlinks are removed but not followed
shutil.rmtree(dir1)
self.assertFalse(os.path.exists(dir1))
self.assertTrue(os.path.exists(dir3))
self.assertTrue(os.path.exists(file1))
@unittest.skipUnless(_winapi, 'only relevant on Windows')
def test_rmtree_fails_on_junctions(self):
tmp = self.mkdtemp()
dir_ = os.path.join(tmp, 'dir')
os.mkdir(dir_)
link = os.path.join(tmp, 'link')
_winapi.CreateJunction(dir_, link)
self.addCleanup(os_helper.unlink, link)
self.assertRaises(OSError, shutil.rmtree, link)
self.assertTrue(os.path.exists(dir_))
self.assertTrue(os.path.lexists(link))
errors = []
def onerror(*args):
errors.append(args)
shutil.rmtree(link, onerror=onerror)
self.assertEqual(len(errors), 1)
self.assertIs(errors[0][0], os.path.islink)
self.assertEqual(errors[0][1], link)
self.assertIsInstance(errors[0][2][1], OSError)
@unittest.skipUnless(_winapi, 'only relevant on Windows')
def test_rmtree_works_on_junctions(self):
tmp = self.mkdtemp()
dir1 = os.path.join(tmp, 'dir1')
dir2 = os.path.join(dir1, 'dir2')
dir3 = os.path.join(tmp, 'dir3')
for d in dir1, dir2, dir3:
os.mkdir(d)
file1 = os.path.join(tmp, 'file1')
write_file(file1, 'foo')
link1 = os.path.join(dir1, 'link1')
_winapi.CreateJunction(dir2, link1)
link2 = os.path.join(dir1, 'link2')
_winapi.CreateJunction(dir3, link2)
link3 = os.path.join(dir1, 'link3')
_winapi.CreateJunction(file1, link3)
# make sure junctions are removed but not followed
shutil.rmtree(dir1)
self.assertFalse(os.path.exists(dir1))
self.assertTrue(os.path.exists(dir3))
self.assertTrue(os.path.exists(file1))
def test_rmtree_errors(self):
# filename is guaranteed not to exist
filename = tempfile.mktemp(dir=self.mkdtemp())
self.assertRaises(FileNotFoundError, shutil.rmtree, filename)
# test that ignore_errors option is honored
shutil.rmtree(filename, ignore_errors=True)
# existing file
tmpdir = self.mkdtemp()
write_file((tmpdir, "tstfile"), "")
filename = os.path.join(tmpdir, "tstfile")
with self.assertRaises(NotADirectoryError) as cm:
shutil.rmtree(filename)
self.assertEqual(cm.exception.filename, filename)
self.assertTrue(os.path.exists(filename))
# test that ignore_errors option is honored
shutil.rmtree(filename, ignore_errors=True)
self.assertTrue(os.path.exists(filename))
errors = []
def onerror(*args):
errors.append(args)
shutil.rmtree(filename, onerror=onerror)
self.assertEqual(len(errors), 2)
self.assertIs(errors[0][0], os.scandir)
self.assertEqual(errors[0][1], filename)
self.assertIsInstance(errors[0][2][1], NotADirectoryError)
self.assertEqual(errors[0][2][1].filename, filename)
self.assertIs(errors[1][0], os.rmdir)
self.assertEqual(errors[1][1], filename)
self.assertIsInstance(errors[1][2][1], NotADirectoryError)
self.assertEqual(errors[1][2][1].filename, filename)
@unittest.skipIf(sys.platform[:6] == 'cygwin',
"This test can't be run on Cygwin (issue #1071513).")
@unittest.skipIf(hasattr(os, 'geteuid') and os.geteuid() == 0,
"This test can't be run reliably as root (issue #1076467).")
def test_on_error(self):
self.errorState = 0
os.mkdir(TESTFN)
self.addCleanup(shutil.rmtree, TESTFN)
self.child_file_path = os.path.join(TESTFN, 'a')
self.child_dir_path = os.path.join(TESTFN, 'b')
os_helper.create_empty_file(self.child_file_path)
os.mkdir(self.child_dir_path)
old_dir_mode = os.stat(TESTFN).st_mode
old_child_file_mode = os.stat(self.child_file_path).st_mode
old_child_dir_mode = os.stat(self.child_dir_path).st_mode
# Make unwritable.
new_mode = stat.S_IREAD|stat.S_IEXEC
os.chmod(self.child_file_path, new_mode)
os.chmod(self.child_dir_path, new_mode)
os.chmod(TESTFN, new_mode)
self.addCleanup(os.chmod, TESTFN, old_dir_mode)
self.addCleanup(os.chmod, self.child_file_path, old_child_file_mode)
self.addCleanup(os.chmod, self.child_dir_path, old_child_dir_mode)
shutil.rmtree(TESTFN, onerror=self.check_args_to_onerror)
# Test whether onerror has actually been called.
self.assertEqual(self.errorState, 3,
"Expected call to onerror function did not happen.")
def check_args_to_onerror(self, func, arg, exc):
# test_rmtree_errors deliberately runs rmtree
# on a directory that is chmod 500, which will fail.
# This function is run when shutil.rmtree fails.
# 99.9% of the time it initially fails to remove
# a file in the directory, so the first time through
# func is os.remove.
# However, some Linux machines running ZFS on
# FUSE experienced a failure earlier in the process
# at os.listdir. The first failure may legally
# be either.
if self.errorState < 2:
if func is os.unlink:
self.assertEqual(arg, self.child_file_path)
elif func is os.rmdir:
self.assertEqual(arg, self.child_dir_path)
else:
self.assertIs(func, os.listdir)
self.assertIn(arg, [TESTFN, self.child_dir_path])
self.assertTrue(issubclass(exc[0], OSError))
self.errorState += 1
else:
self.assertEqual(func, os.rmdir)
self.assertEqual(arg, TESTFN)
self.assertTrue(issubclass(exc[0], OSError))
self.errorState = 3
def test_rmtree_does_not_choke_on_failing_lstat(self):
try:
orig_lstat = os.lstat
def raiser(fn, *args, **kwargs):
if fn != TESTFN:
raise OSError()
else:
return orig_lstat(fn)
os.lstat = raiser
os.mkdir(TESTFN)
write_file((TESTFN, 'foo'), 'foo')
shutil.rmtree(TESTFN)
finally:
os.lstat = orig_lstat
def test_rmtree_uses_safe_fd_version_if_available(self):
_use_fd_functions = ({os.open, os.stat, os.unlink, os.rmdir} <=
os.supports_dir_fd and
os.listdir in os.supports_fd and
os.stat in os.supports_follow_symlinks)
if _use_fd_functions:
self.assertTrue(shutil._use_fd_functions)
self.assertTrue(shutil.rmtree.avoids_symlink_attacks)
tmp_dir = self.mkdtemp()
d = os.path.join(tmp_dir, 'a')
os.mkdir(d)
try:
real_rmtree = shutil._rmtree_safe_fd
class Called(Exception): pass
def _raiser(*args, **kwargs):
raise Called
shutil._rmtree_safe_fd = _raiser
self.assertRaises(Called, shutil.rmtree, d)
finally:
shutil._rmtree_safe_fd = real_rmtree
else:
self.assertFalse(shutil._use_fd_functions)
self.assertFalse(shutil.rmtree.avoids_symlink_attacks)
def test_rmtree_dont_delete_file(self):
# When called on a file instead of a directory, don't delete it.
handle, path = tempfile.mkstemp(dir=self.mkdtemp())
os.close(handle)
self.assertRaises(NotADirectoryError, shutil.rmtree, path)
os.remove(path)
@os_helper.skip_unless_symlink
def test_rmtree_on_symlink(self):
# bug 1669.
os.mkdir(TESTFN)
try:
src = os.path.join(TESTFN, 'cheese')
dst = os.path.join(TESTFN, 'shop')
os.mkdir(src)
os.symlink(src, dst)
self.assertRaises(OSError, shutil.rmtree, dst)
shutil.rmtree(dst, ignore_errors=True)
finally:
shutil.rmtree(TESTFN, ignore_errors=True)
@unittest.skipUnless(_winapi, 'only relevant on Windows')
def test_rmtree_on_junction(self):
os.mkdir(TESTFN)
try:
src = os.path.join(TESTFN, 'cheese')
dst = os.path.join(TESTFN, 'shop')
os.mkdir(src)
open(os.path.join(src, 'spam'), 'wb').close()
_winapi.CreateJunction(src, dst)
self.assertRaises(OSError, shutil.rmtree, dst)
shutil.rmtree(dst, ignore_errors=True)
finally:
shutil.rmtree(TESTFN, ignore_errors=True)
class TestCopyTree(BaseTest, unittest.TestCase):
def test_copytree_simple(self):
src_dir = self.mkdtemp()
dst_dir = os.path.join(self.mkdtemp(), 'destination')
self.addCleanup(shutil.rmtree, src_dir)
self.addCleanup(shutil.rmtree, os.path.dirname(dst_dir))
write_file((src_dir, 'test.txt'), '123')
os.mkdir(os.path.join(src_dir, 'test_dir'))
write_file((src_dir, 'test_dir', 'test.txt'), '456')
shutil.copytree(src_dir, dst_dir)
self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'test.txt')))
self.assertTrue(os.path.isdir(os.path.join(dst_dir, 'test_dir')))
self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'test_dir',
'test.txt')))
actual = read_file((dst_dir, 'test.txt'))
self.assertEqual(actual, '123')
actual = read_file((dst_dir, 'test_dir', 'test.txt'))
self.assertEqual(actual, '456')
def test_copytree_dirs_exist_ok(self):
src_dir = self.mkdtemp()
dst_dir = self.mkdtemp()
self.addCleanup(shutil.rmtree, src_dir)
self.addCleanup(shutil.rmtree, dst_dir)
write_file((src_dir, 'nonexisting.txt'), '123')
os.mkdir(os.path.join(src_dir, 'existing_dir'))
os.mkdir(os.path.join(dst_dir, 'existing_dir'))
write_file((dst_dir, 'existing_dir', 'existing.txt'), 'will be replaced')
write_file((src_dir, 'existing_dir', 'existing.txt'), 'has been replaced')
shutil.copytree(src_dir, dst_dir, dirs_exist_ok=True)
self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'nonexisting.txt')))
self.assertTrue(os.path.isdir(os.path.join(dst_dir, 'existing_dir')))
self.assertTrue(os.path.isfile(os.path.join(dst_dir, 'existing_dir',
'existing.txt')))
actual = read_file((dst_dir, 'nonexisting.txt'))
self.assertEqual(actual, '123')
actual = read_file((dst_dir, 'existing_dir', 'existing.txt'))
self.assertEqual(actual, 'has been replaced')
with self.assertRaises(FileExistsError):
shutil.copytree(src_dir, dst_dir, dirs_exist_ok=False)
@os_helper.skip_unless_symlink
def test_copytree_symlinks(self):
tmp_dir = self.mkdtemp()
src_dir = os.path.join(tmp_dir, 'src')
dst_dir = os.path.join(tmp_dir, 'dst')
sub_dir = os.path.join(src_dir, 'sub')
os.mkdir(src_dir)
os.mkdir(sub_dir)
write_file((src_dir, 'file.txt'), 'foo')
src_link = os.path.join(sub_dir, 'link')
dst_link = os.path.join(dst_dir, 'sub/link')
os.symlink(os.path.join(src_dir, 'file.txt'),
src_link)
if hasattr(os, 'lchmod'):
os.lchmod(src_link, stat.S_IRWXU | stat.S_IRWXO)
if hasattr(os, 'lchflags') and hasattr(stat, 'UF_NODUMP'):
os.lchflags(src_link, stat.UF_NODUMP)
src_stat = os.lstat(src_link)
shutil.copytree(src_dir, dst_dir, symlinks=True)
self.assertTrue(os.path.islink(os.path.join(dst_dir, 'sub', 'link')))
actual = os.readlink(os.path.join(dst_dir, 'sub', 'link'))
# Bad practice to blindly strip the prefix as it may be required to
# correctly refer to the file, but we're only comparing paths here.
if os.name == 'nt' and actual.startswith('\\\\?\\'):
actual = actual[4:]
self.assertEqual(actual, os.path.join(src_dir, 'file.txt'))
dst_stat = os.lstat(dst_link)
if hasattr(os, 'lchmod'):
self.assertEqual(dst_stat.st_mode, src_stat.st_mode)
if hasattr(os, 'lchflags'):
self.assertEqual(dst_stat.st_flags, src_stat.st_flags)
def test_copytree_with_exclude(self):
# creating data
join = os.path.join
exists = os.path.exists
src_dir = self.mkdtemp()
try:
dst_dir = join(self.mkdtemp(), 'destination')
write_file((src_dir, 'test.txt'), '123')
write_file((src_dir, 'test.tmp'), '123')
os.mkdir(join(src_dir, 'test_dir'))
write_file((src_dir, 'test_dir', 'test.txt'), '456')
os.mkdir(join(src_dir, 'test_dir2'))
write_file((src_dir, 'test_dir2', 'test.txt'), '456')
os.mkdir(join(src_dir, 'test_dir2', 'subdir'))
os.mkdir(join(src_dir, 'test_dir2', 'subdir2'))
write_file((src_dir, 'test_dir2', 'subdir', 'test.txt'), '456')
write_file((src_dir, 'test_dir2', 'subdir2', 'test.py'), '456')
# testing glob-like patterns
try:
patterns = shutil.ignore_patterns('*.tmp', 'test_dir2')
shutil.copytree(src_dir, dst_dir, ignore=patterns)
# checking the result: some elements should not be copied
self.assertTrue(exists(join(dst_dir, 'test.txt')))
self.assertFalse(exists(join(dst_dir, 'test.tmp')))
self.assertFalse(exists(join(dst_dir, 'test_dir2')))
finally:
shutil.rmtree(dst_dir)
try:
patterns = shutil.ignore_patterns('*.tmp', 'subdir*')
shutil.copytree(src_dir, dst_dir, ignore=patterns)
# checking the result: some elements should not be copied
self.assertFalse(exists(join(dst_dir, 'test.tmp')))
self.assertFalse(exists(join(dst_dir, 'test_dir2', 'subdir2')))
self.assertFalse(exists(join(dst_dir, 'test_dir2', 'subdir')))
finally:
shutil.rmtree(dst_dir)
# testing callable-style
try:
def _filter(src, names):
res = []
for name in names:
path = os.path.join(src, name)
if (os.path.isdir(path) and
path.split()[-1] == 'subdir'):
res.append(name)
elif os.path.splitext(path)[-1] in ('.py'):
res.append(name)
return res
shutil.copytree(src_dir, dst_dir, ignore=_filter)
# checking the result: some elements should not be copied
self.assertFalse(exists(join(dst_dir, 'test_dir2', 'subdir2',
'test.py')))
self.assertFalse(exists(join(dst_dir, 'test_dir2', 'subdir')))
finally:
shutil.rmtree(dst_dir)
finally:
shutil.rmtree(src_dir)
shutil.rmtree(os.path.dirname(dst_dir))
def test_copytree_arg_types_of_ignore(self):
join = os.path.join
exists = os.path.exists
tmp_dir = self.mkdtemp()
src_dir = join(tmp_dir, "source")
os.mkdir(join(src_dir))
os.mkdir(join(src_dir, 'test_dir'))
os.mkdir(os.path.join(src_dir, 'test_dir', 'subdir'))
write_file((src_dir, 'test_dir', 'subdir', 'test.txt'), '456')
invokations = []
def _ignore(src, names):
invokations.append(src)
self.assertIsInstance(src, str)
self.assertIsInstance(names, list)
self.assertEqual(len(names), len(set(names)))
for name in names:
self.assertIsInstance(name, str)
return []
dst_dir = join(self.mkdtemp(), 'destination')
shutil.copytree(src_dir, dst_dir, ignore=_ignore)
self.assertTrue(exists(join(dst_dir, 'test_dir', 'subdir',
'test.txt')))
dst_dir = join(self.mkdtemp(), 'destination')
shutil.copytree(pathlib.Path(src_dir), dst_dir, ignore=_ignore)
self.assertTrue(exists(join(dst_dir, 'test_dir', 'subdir',
'test.txt')))
dst_dir = join(self.mkdtemp(), 'destination')
src_dir_entry = list(os.scandir(tmp_dir))[0]
self.assertIsInstance(src_dir_entry, os.DirEntry)
shutil.copytree(src_dir_entry, dst_dir, ignore=_ignore)
self.assertTrue(exists(join(dst_dir, 'test_dir', 'subdir',
'test.txt')))
self.assertEqual(len(invokations), 9)
def test_copytree_retains_permissions(self):
tmp_dir = self.mkdtemp()
src_dir = os.path.join(tmp_dir, 'source')
os.mkdir(src_dir)
dst_dir = os.path.join(tmp_dir, 'destination')
self.addCleanup(shutil.rmtree, tmp_dir)
os.chmod(src_dir, 0o777)
write_file((src_dir, 'permissive.txt'), '123')
os.chmod(os.path.join(src_dir, 'permissive.txt'), 0o777)
write_file((src_dir, 'restrictive.txt'), '456')
os.chmod(os.path.join(src_dir, 'restrictive.txt'), 0o600)
restrictive_subdir = tempfile.mkdtemp(dir=src_dir)
self.addCleanup(os_helper.rmtree, restrictive_subdir)
os.chmod(restrictive_subdir, 0o600)
shutil.copytree(src_dir, dst_dir)
self.assertEqual(os.stat(src_dir).st_mode, os.stat(dst_dir).st_mode)
self.assertEqual(os.stat(os.path.join(src_dir, 'permissive.txt')).st_mode,
os.stat(os.path.join(dst_dir, 'permissive.txt')).st_mode)
self.assertEqual(os.stat(os.path.join(src_dir, 'restrictive.txt')).st_mode,
os.stat(os.path.join(dst_dir, 'restrictive.txt')).st_mode)
restrictive_subdir_dst = os.path.join(dst_dir,
os.path.split(restrictive_subdir)[1])
self.assertEqual(os.stat(restrictive_subdir).st_mode,
os.stat(restrictive_subdir_dst).st_mode)
@unittest.mock.patch('os.chmod')
def test_copytree_winerror(self, mock_patch):
# When copying to VFAT, copystat() raises OSError. On Windows, the
# exception object has a meaningful 'winerror' attribute, but not
# on other operating systems. Do not assume 'winerror' is set.
src_dir = self.mkdtemp()
dst_dir = os.path.join(self.mkdtemp(), 'destination')
self.addCleanup(shutil.rmtree, src_dir)
self.addCleanup(shutil.rmtree, os.path.dirname(dst_dir))
mock_patch.side_effect = PermissionError('ka-boom')
with self.assertRaises(shutil.Error):
shutil.copytree(src_dir, dst_dir)
def test_copytree_custom_copy_function(self):
# See: https://bugs.python.org/issue35648
def custom_cpfun(a, b):
flag.append(None)
self.assertIsInstance(a, str)
self.assertIsInstance(b, str)
self.assertEqual(a, os.path.join(src, 'foo'))
self.assertEqual(b, os.path.join(dst, 'foo'))
flag = []
src = self.mkdtemp()
dst = tempfile.mktemp(dir=self.mkdtemp())
with open(os.path.join(src, 'foo'), 'w', encoding='utf-8') as f:
f.close()
shutil.copytree(src, dst, copy_function=custom_cpfun)
self.assertEqual(len(flag), 1)
# Issue #3002: copyfile and copytree block indefinitely on named pipes
@unittest.skipUnless(hasattr(os, "mkfifo"), 'requires os.mkfifo()')
@os_helper.skip_unless_symlink
@unittest.skipIf(sys.platform == "vxworks",
"fifo requires special path on VxWorks")
def test_copytree_named_pipe(self):
os.mkdir(TESTFN)
try:
subdir = os.path.join(TESTFN, "subdir")
os.mkdir(subdir)
pipe = os.path.join(subdir, "mypipe")
try:
os.mkfifo(pipe)
except PermissionError as e:
self.skipTest('os.mkfifo(): %s' % e)
try:
shutil.copytree(TESTFN, TESTFN2)
except shutil.Error as e:
errors = e.args[0]
self.assertEqual(len(errors), 1)
src, dst, error_msg = errors[0]
self.assertEqual("`%s` is a named pipe" % pipe, error_msg)
else:
self.fail("shutil.Error should have been raised")
finally:
shutil.rmtree(TESTFN, ignore_errors=True)
shutil.rmtree(TESTFN2, ignore_errors=True)
def test_copytree_special_func(self):
src_dir = self.mkdtemp()
dst_dir = os.path.join(self.mkdtemp(), 'destination')
write_file((src_dir, 'test.txt'), '123')
os.mkdir(os.path.join(src_dir, 'test_dir'))
write_file((src_dir, 'test_dir', 'test.txt'), '456')
copied = []
def _copy(src, dst):
copied.append((src, dst))
shutil.copytree(src_dir, dst_dir, copy_function=_copy)
self.assertEqual(len(copied), 2)
@os_helper.skip_unless_symlink
def test_copytree_dangling_symlinks(self):
# a dangling symlink raises an error at the end
src_dir = self.mkdtemp()
dst_dir = os.path.join(self.mkdtemp(), 'destination')
os.symlink('IDONTEXIST', os.path.join(src_dir, 'test.txt'))
os.mkdir(os.path.join(src_dir, 'test_dir'))
write_file((src_dir, 'test_dir', 'test.txt'), '456')
self.assertRaises(Error, shutil.copytree, src_dir, dst_dir)
# a dangling symlink is ignored with the proper flag
dst_dir = os.path.join(self.mkdtemp(), 'destination2')
shutil.copytree(src_dir, dst_dir, ignore_dangling_symlinks=True)
self.assertNotIn('test.txt', os.listdir(dst_dir))
# a dangling symlink is copied if symlinks=True
dst_dir = os.path.join(self.mkdtemp(), 'destination3')
shutil.copytree(src_dir, dst_dir, symlinks=True)
self.assertIn('test.txt', os.listdir(dst_dir))
@os_helper.skip_unless_symlink
def test_copytree_symlink_dir(self):
src_dir = self.mkdtemp()
dst_dir = os.path.join(self.mkdtemp(), 'destination')
os.mkdir(os.path.join(src_dir, 'real_dir'))
with open(os.path.join(src_dir, 'real_dir', 'test.txt'), 'wb'):
pass
os.symlink(os.path.join(src_dir, 'real_dir'),
os.path.join(src_dir, 'link_to_dir'),
target_is_directory=True)
shutil.copytree(src_dir, dst_dir, symlinks=False)
self.assertFalse(os.path.islink(os.path.join(dst_dir, 'link_to_dir')))
self.assertIn('test.txt', os.listdir(os.path.join(dst_dir, 'link_to_dir')))
dst_dir = os.path.join(self.mkdtemp(), 'destination2')
shutil.copytree(src_dir, dst_dir, symlinks=True)
self.assertTrue(os.path.islink(os.path.join(dst_dir, 'link_to_dir')))
self.assertIn('test.txt', os.listdir(os.path.join(dst_dir, 'link_to_dir')))
def test_copytree_return_value(self):
# copytree returns its destination path.
src_dir = self.mkdtemp()
dst_dir = src_dir + "dest"
self.addCleanup(shutil.rmtree, dst_dir, True)
src = os.path.join(src_dir, 'foo')
write_file(src, 'foo')
rv = shutil.copytree(src_dir, dst_dir)
self.assertEqual(['foo'], os.listdir(rv))
def test_copytree_subdirectory(self):
# copytree where dst is a subdirectory of src, see Issue 38688
base_dir = self.mkdtemp()
self.addCleanup(shutil.rmtree, base_dir, ignore_errors=True)
src_dir = os.path.join(base_dir, "t", "pg")
dst_dir = os.path.join(src_dir, "somevendor", "1.0")
os.makedirs(src_dir)
src = os.path.join(src_dir, 'pol')
write_file(src, 'pol')
rv = shutil.copytree(src_dir, dst_dir)
self.assertEqual(['pol'], os.listdir(rv))
class TestCopy(BaseTest, unittest.TestCase):
### shutil.copymode
@os_helper.skip_unless_symlink
def test_copymode_follow_symlinks(self):
tmp_dir = self.mkdtemp()
src = os.path.join(tmp_dir, 'foo')
dst = os.path.join(tmp_dir, 'bar')
src_link = os.path.join(tmp_dir, 'baz')
dst_link = os.path.join(tmp_dir, 'quux')
write_file(src, 'foo')
write_file(dst, 'foo')
os.symlink(src, src_link)
os.symlink(dst, dst_link)
os.chmod(src, stat.S_IRWXU|stat.S_IRWXG)
# file to file
os.chmod(dst, stat.S_IRWXO)
self.assertNotEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
shutil.copymode(src, dst)
self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
# On Windows, os.chmod does not follow symlinks (issue #15411)
if os.name != 'nt':
# follow src link
os.chmod(dst, stat.S_IRWXO)
shutil.copymode(src_link, dst)
self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
# follow dst link
os.chmod(dst, stat.S_IRWXO)
shutil.copymode(src, dst_link)
self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
# follow both links
os.chmod(dst, stat.S_IRWXO)
shutil.copymode(src_link, dst_link)
self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
@unittest.skipUnless(hasattr(os, 'lchmod'), 'requires os.lchmod')
@os_helper.skip_unless_symlink
def test_copymode_symlink_to_symlink(self):
tmp_dir = self.mkdtemp()
src = os.path.join(tmp_dir, 'foo')
dst = os.path.join(tmp_dir, 'bar')
src_link = os.path.join(tmp_dir, 'baz')
dst_link = os.path.join(tmp_dir, 'quux')
write_file(src, 'foo')
write_file(dst, 'foo')
os.symlink(src, src_link)
os.symlink(dst, dst_link)
os.chmod(src, stat.S_IRWXU|stat.S_IRWXG)
os.chmod(dst, stat.S_IRWXU)
os.lchmod(src_link, stat.S_IRWXO|stat.S_IRWXG)
# link to link
os.lchmod(dst_link, stat.S_IRWXO)
shutil.copymode(src_link, dst_link, follow_symlinks=False)
self.assertEqual(os.lstat(src_link).st_mode,
os.lstat(dst_link).st_mode)
self.assertNotEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
# src link - use chmod
os.lchmod(dst_link, stat.S_IRWXO)
shutil.copymode(src_link, dst, follow_symlinks=False)
self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
# dst link - use chmod
os.lchmod(dst_link, stat.S_IRWXO)
shutil.copymode(src, dst_link, follow_symlinks=False)
self.assertEqual(os.stat(src).st_mode, os.stat(dst).st_mode)
@unittest.skipIf(hasattr(os, 'lchmod'), 'requires os.lchmod to be missing')
@os_helper.skip_unless_symlink
def test_copymode_symlink_to_symlink_wo_lchmod(self):
tmp_dir = self.mkdtemp()
src = os.path.join(tmp_dir, 'foo')
dst = os.path.join(tmp_dir, 'bar')
src_link = os.path.join(tmp_dir, 'baz')
dst_link = os.path.join(tmp_dir, 'quux')
write_file(src, 'foo')
write_file(dst, 'foo')
os.symlink(src, src_link)
os.symlink(dst, dst_link)
shutil.copymode(src_link, dst_link, follow_symlinks=False) # silent fail
### shutil.copystat
@os_helper.skip_unless_symlink
def test_copystat_symlinks(self):
tmp_dir = self.mkdtemp()
src = os.path.join(tmp_dir, 'foo')
dst = os.path.join(tmp_dir, 'bar')
src_link = os.path.join(tmp_dir, 'baz')
dst_link = os.path.join(tmp_dir, 'qux')
write_file(src, 'foo')
src_stat = os.stat(src)
os.utime(src, (src_stat.st_atime,
src_stat.st_mtime - 42.0)) # ensure different mtimes
write_file(dst, 'bar')
self.assertNotEqual(os.stat(src).st_mtime, os.stat(dst).st_mtime)
os.symlink(src, src_link)
os.symlink(dst, dst_link)
if hasattr(os, 'lchmod'):
os.lchmod(src_link, stat.S_IRWXO)
if hasattr(os, 'lchflags') and hasattr(stat, 'UF_NODUMP'):
os.lchflags(src_link, stat.UF_NODUMP)
src_link_stat = os.lstat(src_link)
# follow
if hasattr(os, 'lchmod'):
shutil.copystat(src_link, dst_link, follow_symlinks=True)
self.assertNotEqual(src_link_stat.st_mode, os.stat(dst).st_mode)
# don't follow
shutil.copystat(src_link, dst_link, follow_symlinks=False)
dst_link_stat = os.lstat(dst_link)
if os.utime in os.supports_follow_symlinks:
for attr in 'st_atime', 'st_mtime':
# The modification times may be truncated in the new file.
self.assertLessEqual(getattr(src_link_stat, attr),
getattr(dst_link_stat, attr) + 1)
if hasattr(os, 'lchmod'):
self.assertEqual(src_link_stat.st_mode, dst_link_stat.st_mode)
if hasattr(os, 'lchflags') and hasattr(src_link_stat, 'st_flags'):
self.assertEqual(src_link_stat.st_flags, dst_link_stat.st_flags)
# tell to follow but dst is not a link
shutil.copystat(src_link, dst, follow_symlinks=False)
self.assertTrue(abs(os.stat(src).st_mtime - os.stat(dst).st_mtime) <
00000.1)
@unittest.skipUnless(hasattr(os, 'chflags') and
hasattr(errno, 'EOPNOTSUPP') and
hasattr(errno, 'ENOTSUP'),
"requires os.chflags, EOPNOTSUPP & ENOTSUP")
def test_copystat_handles_harmless_chflags_errors(self):
tmpdir = self.mkdtemp()
file1 = os.path.join(tmpdir, 'file1')
file2 = os.path.join(tmpdir, 'file2')
write_file(file1, 'xxx')
write_file(file2, 'xxx')
def make_chflags_raiser(err):
ex = OSError()
def _chflags_raiser(path, flags, *, follow_symlinks=True):
ex.errno = err
raise ex
return _chflags_raiser
old_chflags = os.chflags
try:
for err in errno.EOPNOTSUPP, errno.ENOTSUP:
os.chflags = make_chflags_raiser(err)
shutil.copystat(file1, file2)
# assert others errors break it
os.chflags = make_chflags_raiser(errno.EOPNOTSUPP + errno.ENOTSUP)
self.assertRaises(OSError, shutil.copystat, file1, file2)
finally:
os.chflags = old_chflags
### shutil.copyxattr
@os_helper.skip_unless_xattr
def test_copyxattr(self):
tmp_dir = self.mkdtemp()
src = os.path.join(tmp_dir, 'foo')
write_file(src, 'foo')
dst = os.path.join(tmp_dir, 'bar')
write_file(dst, 'bar')
# no xattr == no problem
shutil._copyxattr(src, dst)
# common case
os.setxattr(src, 'user.foo', b'42')
os.setxattr(src, 'user.bar', b'43')
shutil._copyxattr(src, dst)
self.assertEqual(sorted(os.listxattr(src)), sorted(os.listxattr(dst)))
self.assertEqual(
os.getxattr(src, 'user.foo'),
os.getxattr(dst, 'user.foo'))
# check errors don't affect other attrs
os.remove(dst)
write_file(dst, 'bar')
os_error = OSError(errno.EPERM, 'EPERM')
def _raise_on_user_foo(fname, attr, val, **kwargs):
if attr == 'user.foo':
raise os_error
else:
orig_setxattr(fname, attr, val, **kwargs)
try:
orig_setxattr = os.setxattr
os.setxattr = _raise_on_user_foo
shutil._copyxattr(src, dst)
self.assertIn('user.bar', os.listxattr(dst))
finally:
os.setxattr = orig_setxattr
# the source filesystem not supporting xattrs should be ok, too.
def _raise_on_src(fname, *, follow_symlinks=True):
if fname == src:
raise OSError(errno.ENOTSUP, 'Operation not supported')
return orig_listxattr(fname, follow_symlinks=follow_symlinks)
try:
orig_listxattr = os.listxattr
os.listxattr = _raise_on_src
shutil._copyxattr(src, dst)
finally:
os.listxattr = orig_listxattr
# test that shutil.copystat copies xattrs
src = os.path.join(tmp_dir, 'the_original')
srcro = os.path.join(tmp_dir, 'the_original_ro')
write_file(src, src)
write_file(srcro, srcro)
os.setxattr(src, 'user.the_value', b'fiddly')