def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
python类ENOTSUP的实例源码
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def test_copystat_handles_harmless_chflags_errors(self):
tmpdir = self.mkdtemp()
file1 = os.path.join(tmpdir, 'file1')
file2 = os.path.join(tmpdir, 'file2')
self.write_file(file1, 'xxx')
self.write_file(file2, 'xxx')
def make_chflags_raiser(err):
ex = OSError()
def _chflags_raiser(path, flags):
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
def test_copystat_handles_harmless_chflags_errors(self):
tmpdir = self.mkdtemp()
file1 = os.path.join(tmpdir, 'file1')
file2 = os.path.join(tmpdir, 'file2')
self.write_file(file1, 'xxx')
self.write_file(file2, 'xxx')
def make_chflags_raiser(err):
ex = OSError()
def _chflags_raiser(path, flags):
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
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
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
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def test_copystat_handles_harmless_chflags_errors(self):
tmpdir = self.mkdtemp()
file1 = os.path.join(tmpdir, 'file1')
file2 = os.path.join(tmpdir, 'file2')
self.write_file(file1, 'xxx')
self.write_file(file2, 'xxx')
def make_chflags_raiser(err):
ex = OSError()
def _chflags_raiser(path, flags):
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
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
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def test_copystat_handles_harmless_chflags_errors(self):
tmpdir = self.mkdtemp()
file1 = os.path.join(tmpdir, 'file1')
file2 = os.path.join(tmpdir, 'file2')
self.write_file(file1, 'xxx')
self.write_file(file2, 'xxx')
def make_chflags_raiser(err):
ex = OSError()
def _chflags_raiser(path, flags):
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
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
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
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def copy_to_audiobook_folder(path):
"""
Copies the given path (folder or file) to the audio book folder.
"""
try:
name = os.path.basename(os.path.normpath(path))
shutil.copytree(path, db.Settings.get().path + "/" + name)
except OSError as exc:
if exc.errno == errno.ENOTDIR:
try:
shutil.copy(path, db.Settings.get().path)
except OSError as e:
if e.errno == 95:
log.error("Could not import file " + path)
log.error(exc)
else:
log.error(e)
elif exc.errno == errno.ENOTSUP:
log.error("Could not import file " + path)
log.error(exc)
else:
log.error("Could not import file " + path)
log.error(exc)
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def _copyxattr(src, dst, *, follow_symlinks=True):
"""Copy extended filesystem attributes from `src` to `dst`.
Overwrite existing attributes.
If `follow_symlinks` is false, symlinks won't be followed.
"""
try:
names = os.listxattr(src, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.ENOTSUP, errno.ENODATA):
raise
return
for name in names:
try:
value = os.getxattr(src, name, follow_symlinks=follow_symlinks)
os.setxattr(dst, name, value, follow_symlinks=follow_symlinks)
except OSError as e:
if e.errno not in (errno.EPERM, errno.ENOTSUP, errno.ENODATA):
raise
def test_listen(self, tco):
tco.listen(backlog=1)
assert tco.state.LISTEN is True
with pytest.raises(nfc.llcp.Error) as excinfo:
tco.listen(1)
assert excinfo.value.errno == errno.ENOTSUP
tco.close()
with pytest.raises(nfc.llcp.Error) as excinfo:
tco.listen(1)
assert excinfo.value.errno == errno.ESHUTDOWN
def listen(self, backlog):
with self.lock:
if self.state.SHUTDOWN:
raise err.Error(errno.ESHUTDOWN)
if not self.state.CLOSED:
self.err("listen() but socket state is {0}".format(self.state))
raise err.Error(errno.ENOTSUP)
self.state.LISTEN = True
self.recv_buf = backlog
def copystat(src, dst, *, follow_symlinks=True):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst.
If the optional flag `follow_symlinks` is not set, symlinks aren't followed if and
only if both `src` and `dst` are symlinks.
"""
def _nop(*args, ns=None, follow_symlinks=None):
pass
# follow symlinks (aka don't not follow symlinks)
follow = follow_symlinks or not (os.path.islink(src) and os.path.islink(dst))
if follow:
# use the real function if it exists
def lookup(name):
return getattr(os, name, _nop)
else:
# use the real function only if it exists
# *and* it supports follow_symlinks
def lookup(name):
fn = getattr(os, name, _nop)
if fn in os.supports_follow_symlinks:
return fn
return _nop
st = lookup("stat")(src, follow_symlinks=follow)
mode = stat.S_IMODE(st.st_mode)
lookup("utime")(dst, ns=(st.st_atime_ns, st.st_mtime_ns),
follow_symlinks=follow)
try:
lookup("chmod")(dst, mode, follow_symlinks=follow)
except NotImplementedError:
# if we got a NotImplementedError, it's because
# * follow_symlinks=False,
# * lchown() is unavailable, and
# * either
# * fchownat() is unavailable or
# * fchownat() doesn't implement AT_SYMLINK_NOFOLLOW.
# (it returned ENOSUP.)
# therefore we're out of options--we simply cannot chown the
# symlink. give up, suppress the error.
# (which is what shutil always did in this circumstance.)
pass
if hasattr(st, 'st_flags'):
try:
lookup("chflags")(dst, st.st_flags, follow_symlinks=follow)
except OSError as why:
for err in 'EOPNOTSUPP', 'ENOTSUP':
if hasattr(errno, err) and why.errno == getattr(errno, err):
break
else:
raise
_copyxattr(src, dst, follow_symlinks=follow)
def copystat(src, dst, *, follow_symlinks=True):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst.
If the optional flag `follow_symlinks` is not set, symlinks aren't followed if and
only if both `src` and `dst` are symlinks.
"""
def _nop(*args, ns=None, follow_symlinks=None):
pass
# follow symlinks (aka don't not follow symlinks)
follow = follow_symlinks or not (os.path.islink(src) and os.path.islink(dst))
if follow:
# use the real function if it exists
def lookup(name):
return getattr(os, name, _nop)
else:
# use the real function only if it exists
# *and* it supports follow_symlinks
def lookup(name):
fn = getattr(os, name, _nop)
if fn in os.supports_follow_symlinks:
return fn
return _nop
st = lookup("stat")(src, follow_symlinks=follow)
mode = stat.S_IMODE(st.st_mode)
lookup("utime")(dst, ns=(st.st_atime_ns, st.st_mtime_ns),
follow_symlinks=follow)
try:
lookup("chmod")(dst, mode, follow_symlinks=follow)
except NotImplementedError:
# if we got a NotImplementedError, it's because
# * follow_symlinks=False,
# * lchown() is unavailable, and
# * either
# * fchownat() is unavailable or
# * fchownat() doesn't implement AT_SYMLINK_NOFOLLOW.
# (it returned ENOSUP.)
# therefore we're out of options--we simply cannot chown the
# symlink. give up, suppress the error.
# (which is what shutil always did in this circumstance.)
pass
if hasattr(st, 'st_flags'):
try:
lookup("chflags")(dst, st.st_flags, follow_symlinks=follow)
except OSError as why:
for err in 'EOPNOTSUPP', 'ENOTSUP':
if hasattr(errno, err) and why.errno == getattr(errno, err):
break
else:
raise
_copyxattr(src, dst, follow_symlinks=follow)
def copystat(src, dst, *, follow_symlinks=True):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst.
If the optional flag `follow_symlinks` is not set, symlinks aren't followed if and
only if both `src` and `dst` are symlinks.
"""
def _nop(*args, ns=None, follow_symlinks=None):
pass
# follow symlinks (aka don't not follow symlinks)
follow = follow_symlinks or not (os.path.islink(src) and os.path.islink(dst))
if follow:
# use the real function if it exists
def lookup(name):
return getattr(os, name, _nop)
else:
# use the real function only if it exists
# *and* it supports follow_symlinks
def lookup(name):
fn = getattr(os, name, _nop)
if fn in os.supports_follow_symlinks:
return fn
return _nop
st = lookup("stat")(src, follow_symlinks=follow)
mode = stat.S_IMODE(st.st_mode)
lookup("utime")(dst, ns=(st.st_atime_ns, st.st_mtime_ns),
follow_symlinks=follow)
try:
lookup("chmod")(dst, mode, follow_symlinks=follow)
except NotImplementedError:
# if we got a NotImplementedError, it's because
# * follow_symlinks=False,
# * lchown() is unavailable, and
# * either
# * fchownat() is unavailable or
# * fchownat() doesn't implement AT_SYMLINK_NOFOLLOW.
# (it returned ENOSUP.)
# therefore we're out of options--we simply cannot chown the
# symlink. give up, suppress the error.
# (which is what shutil always did in this circumstance.)
pass
if hasattr(st, 'st_flags'):
try:
lookup("chflags")(dst, st.st_flags, follow_symlinks=follow)
except OSError as why:
for err in 'EOPNOTSUPP', 'ENOTSUP':
if hasattr(errno, err) and why.errno == getattr(errno, err):
break
else:
raise
_copyxattr(src, dst, follow_symlinks=follow)
def copystat(src, dst, *, follow_symlinks=True):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst.
If the optional flag `follow_symlinks` is not set, symlinks aren't followed if and
only if both `src` and `dst` are symlinks.
"""
def _nop(*args, ns=None, follow_symlinks=None):
pass
# follow symlinks (aka don't not follow symlinks)
follow = follow_symlinks or not (os.path.islink(src) and os.path.islink(dst))
if follow:
# use the real function if it exists
def lookup(name):
return getattr(os, name, _nop)
else:
# use the real function only if it exists
# *and* it supports follow_symlinks
def lookup(name):
fn = getattr(os, name, _nop)
if fn in os.supports_follow_symlinks:
return fn
return _nop
st = lookup("stat")(src, follow_symlinks=follow)
mode = stat.S_IMODE(st.st_mode)
lookup("utime")(dst, ns=(st.st_atime_ns, st.st_mtime_ns),
follow_symlinks=follow)
try:
lookup("chmod")(dst, mode, follow_symlinks=follow)
except NotImplementedError:
# if we got a NotImplementedError, it's because
# * follow_symlinks=False,
# * lchown() is unavailable, and
# * either
# * fchownat() is unavailable or
# * fchownat() doesn't implement AT_SYMLINK_NOFOLLOW.
# (it returned ENOSUP.)
# therefore we're out of options--we simply cannot chown the
# symlink. give up, suppress the error.
# (which is what shutil always did in this circumstance.)
pass
if hasattr(st, 'st_flags'):
try:
lookup("chflags")(dst, st.st_flags, follow_symlinks=follow)
except OSError as why:
for err in 'EOPNOTSUPP', 'ENOTSUP':
if hasattr(errno, err) and why.errno == getattr(errno, err):
break
else:
raise
_copyxattr(src, dst, follow_symlinks=follow)
def copystat(src, dst, *, follow_symlinks=True):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst.
If the optional flag `follow_symlinks` is not set, symlinks aren't followed if and
only if both `src` and `dst` are symlinks.
"""
def _nop(*args, ns=None, follow_symlinks=None):
pass
# follow symlinks (aka don't not follow symlinks)
follow = follow_symlinks or not (os.path.islink(src) and os.path.islink(dst))
if follow:
# use the real function if it exists
def lookup(name):
return getattr(os, name, _nop)
else:
# use the real function only if it exists
# *and* it supports follow_symlinks
def lookup(name):
fn = getattr(os, name, _nop)
if fn in os.supports_follow_symlinks:
return fn
return _nop
st = lookup("stat")(src, follow_symlinks=follow)
mode = stat.S_IMODE(st.st_mode)
lookup("utime")(dst, ns=(st.st_atime_ns, st.st_mtime_ns),
follow_symlinks=follow)
try:
lookup("chmod")(dst, mode, follow_symlinks=follow)
except NotImplementedError:
# if we got a NotImplementedError, it's because
# * follow_symlinks=False,
# * lchown() is unavailable, and
# * either
# * fchownat() is unavailable or
# * fchownat() doesn't implement AT_SYMLINK_NOFOLLOW.
# (it returned ENOSUP.)
# therefore we're out of options--we simply cannot chown the
# symlink. give up, suppress the error.
# (which is what shutil always did in this circumstance.)
pass
if hasattr(st, 'st_flags'):
try:
lookup("chflags")(dst, st.st_flags, follow_symlinks=follow)
except OSError as why:
for err in 'EOPNOTSUPP', 'ENOTSUP':
if hasattr(errno, err) and why.errno == getattr(errno, err):
break
else:
raise
_copyxattr(src, dst, follow_symlinks=follow)
