Python os.supports_follow_symlinks() Examples

The following are code examples for showing how to use os.supports_follow_symlinks(). They are extracted from open source Python projects. You can vote up the examples you like or vote down the exmaples you don't like. You can also save this page to your account.

Example 1
Project: web_ctp   Author: molebot   File: test_shutil.py    (license) View Source Project 6 votes vote down vote up
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) 
Example 2
Project: ouroboros   Author: pybee   File: test_shutil.py    (license) View Source Project 6 votes vote down vote up
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) 
Example 3
Project: kbe_server   Author: xiaohaoppy   File: test_shutil.py    (license) View Source Project 6 votes vote down vote up
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) 
Example 4
Project: web_ctp   Author: molebot   File: test_shutil.py    (license) View Source Project 5 votes vote down vote up
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) 
Example 5
Project: web_ctp   Author: molebot   File: test_shutil.py    (license) View Source Project 5 votes vote down vote up
def test_copy2_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')
        write_file(src, 'foo')
        os.symlink(src, 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.stat(src)
        src_link_stat = os.lstat(src_link)
        # follow
        shutil.copy2(src_link, dst, follow_symlinks=True)
        self.assertFalse(os.path.islink(dst))
        self.assertEqual(read_file(src), read_file(dst))
        os.remove(dst)
        # don't follow
        shutil.copy2(src_link, dst, follow_symlinks=False)
        self.assertTrue(os.path.islink(dst))
        self.assertEqual(os.readlink(dst), os.readlink(src_link))
        dst_stat = os.lstat(dst)
        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_stat, attr) + 1)
        if hasattr(os, 'lchmod'):
            self.assertEqual(src_link_stat.st_mode, dst_stat.st_mode)
            self.assertNotEqual(src_stat.st_mode, dst_stat.st_mode)
        if hasattr(os, 'lchflags') and hasattr(src_link_stat, 'st_flags'):
            self.assertEqual(src_link_stat.st_flags, dst_stat.st_flags) 
Example 6
Project: web_ctp   Author: molebot   File: test_posix.py    (license) View Source Project 5 votes vote down vote up
def test_utime_dir_fd(self):
        f = posix.open(posix.getcwd(), posix.O_RDONLY)
        try:
            now = time.time()
            posix.utime(support.TESTFN, None, dir_fd=f)
            posix.utime(support.TESTFN, dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, now, dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, "x"), dir_fd=f)
            posix.utime(support.TESTFN, (int(now), int(now)), dir_fd=f)
            posix.utime(support.TESTFN, (now, now), dir_fd=f)
            posix.utime(support.TESTFN,
                    (int(now), int((now - int(now)) * 1e9)), dir_fd=f)
            posix.utime(support.TESTFN, dir_fd=f,
                            times=(int(now), int((now - int(now)) * 1e9)))

            # try dir_fd and follow_symlinks together
            if os.utime in os.supports_follow_symlinks:
                try:
                    posix.utime(support.TESTFN, follow_symlinks=False, dir_fd=f)
                except ValueError:
                    # whoops!  using both together not supported on this platform.
                    pass

        finally:
            posix.close(f) 
Example 7
Project: ouroboros   Author: pybee   File: test_shutil.py    (license) View Source Project 5 votes vote down vote up
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) 
Example 8
Project: ouroboros   Author: pybee   File: test_shutil.py    (license) View Source Project 5 votes vote down vote up
def test_copy2_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')
        write_file(src, 'foo')
        os.symlink(src, 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.stat(src)
        src_link_stat = os.lstat(src_link)
        # follow
        shutil.copy2(src_link, dst, follow_symlinks=True)
        self.assertFalse(os.path.islink(dst))
        self.assertEqual(read_file(src), read_file(dst))
        os.remove(dst)
        # don't follow
        shutil.copy2(src_link, dst, follow_symlinks=False)
        self.assertTrue(os.path.islink(dst))
        self.assertEqual(os.readlink(dst), os.readlink(src_link))
        dst_stat = os.lstat(dst)
        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_stat, attr) + 1)
        if hasattr(os, 'lchmod'):
            self.assertEqual(src_link_stat.st_mode, dst_stat.st_mode)
            self.assertNotEqual(src_stat.st_mode, dst_stat.st_mode)
        if hasattr(os, 'lchflags') and hasattr(src_link_stat, 'st_flags'):
            self.assertEqual(src_link_stat.st_flags, dst_stat.st_flags) 
Example 9
Project: ouroboros   Author: pybee   File: test_posix.py    (license) View Source Project 5 votes vote down vote up
def test_utime_dir_fd(self):
        f = posix.open(posix.getcwd(), posix.O_RDONLY)
        try:
            now = time.time()
            posix.utime(support.TESTFN, None, dir_fd=f)
            posix.utime(support.TESTFN, dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, now, dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, "x"), dir_fd=f)
            posix.utime(support.TESTFN, (int(now), int(now)), dir_fd=f)
            posix.utime(support.TESTFN, (now, now), dir_fd=f)
            posix.utime(support.TESTFN,
                    (int(now), int((now - int(now)) * 1e9)), dir_fd=f)
            posix.utime(support.TESTFN, dir_fd=f,
                            times=(int(now), int((now - int(now)) * 1e9)))

            # try dir_fd and follow_symlinks together
            if os.utime in os.supports_follow_symlinks:
                try:
                    posix.utime(support.TESTFN, follow_symlinks=False, dir_fd=f)
                except ValueError:
                    # whoops!  using both together not supported on this platform.
                    pass

        finally:
            posix.close(f) 
Example 10
Project: kbe_server   Author: xiaohaoppy   File: test_shutil.py    (license) View Source Project 5 votes vote down vote up
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) 
Example 11
Project: kbe_server   Author: xiaohaoppy   File: test_shutil.py    (license) View Source Project 5 votes vote down vote up
def test_copy2_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')
        write_file(src, 'foo')
        os.symlink(src, 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.stat(src)
        src_link_stat = os.lstat(src_link)
        # follow
        shutil.copy2(src_link, dst, follow_symlinks=True)
        self.assertFalse(os.path.islink(dst))
        self.assertEqual(read_file(src), read_file(dst))
        os.remove(dst)
        # don't follow
        shutil.copy2(src_link, dst, follow_symlinks=False)
        self.assertTrue(os.path.islink(dst))
        self.assertEqual(os.readlink(dst), os.readlink(src_link))
        dst_stat = os.lstat(dst)
        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_stat, attr) + 1)
        if hasattr(os, 'lchmod'):
            self.assertEqual(src_link_stat.st_mode, dst_stat.st_mode)
            self.assertNotEqual(src_stat.st_mode, dst_stat.st_mode)
        if hasattr(os, 'lchflags') and hasattr(src_link_stat, 'st_flags'):
            self.assertEqual(src_link_stat.st_flags, dst_stat.st_flags) 
Example 12
Project: kbe_server   Author: xiaohaoppy   File: test_posix.py    (license) View Source Project 5 votes vote down vote up
def test_utime_dir_fd(self):
        f = posix.open(posix.getcwd(), posix.O_RDONLY)
        try:
            now = time.time()
            posix.utime(support.TESTFN, None, dir_fd=f)
            posix.utime(support.TESTFN, dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, now, dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, None), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, None), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (None, now), dir_fd=f)
            self.assertRaises(TypeError, posix.utime, support.TESTFN, (now, "x"), dir_fd=f)
            posix.utime(support.TESTFN, (int(now), int(now)), dir_fd=f)
            posix.utime(support.TESTFN, (now, now), dir_fd=f)
            posix.utime(support.TESTFN,
                    (int(now), int((now - int(now)) * 1e9)), dir_fd=f)
            posix.utime(support.TESTFN, dir_fd=f,
                            times=(int(now), int((now - int(now)) * 1e9)))

            # try dir_fd and follow_symlinks together
            if os.utime in os.supports_follow_symlinks:
                try:
                    posix.utime(support.TESTFN, follow_symlinks=False, dir_fd=f)
                except ValueError:
                    # whoops!  using both together not supported on this platform.
                    pass

        finally:
            posix.close(f) 
Example 13
Project: python-   Author: secondtonone1   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 14
Project: ivaochdoc   Author: ivaoch   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 15
Project: news-for-good   Author: thecodinghub   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 16
Project: Tencent_Cartoon_Download   Author: Fretice   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 17
Project: fieldsight-kobocat   Author: awemulya   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 18
Project: web_ctp   Author: molebot   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 19
Project: CloudPrint   Author: William-An   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 20
Project: ouroboros   Author: pybee   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 21
Project: gardenbot   Author: GoestaO   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 22
Project: projeto   Author: BarmyPenguin   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 23
Project: flask-zhenai-mongo-echarts   Author: Fretice   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 24
Project: aweasome_learning   Author: Knight-ZXW   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 25
Project: kbe_server   Author: xiaohaoppy   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 26
Project: blog_flask   Author: momantai   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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) 
Example 27
Project: MyFriend-Rob   Author: lcheniv   File: shutil.py    (license) View Source Project 4 votes vote down vote up
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)