我们从Python开源项目中，提取了以下25个代码示例，用于说明如何使用os.lchflags()。
def test_lchflags_symlink(self): testfn_st = os.stat(support.TESTFN) self.assertTrue(hasattr(testfn_st, 'st_flags')) os.symlink(support.TESTFN, _DUMMY_SYMLINK) self.teardown_files.append(_DUMMY_SYMLINK) dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) posix.lchflags(_DUMMY_SYMLINK, dummy_symlink_st.st_flags | stat.UF_IMMUTABLE) try: new_testfn_st = os.stat(support.TESTFN) new_dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) self.assertEqual(testfn_st.st_flags, new_testfn_st.st_flags) self.assertEqual(dummy_symlink_st.st_flags | stat.UF_IMMUTABLE, new_dummy_symlink_st.st_flags) finally: posix.lchflags(_DUMMY_SYMLINK, dummy_symlink_st.st_flags)
def test_lchflags_regular_file(self): self._test_chflags_regular_file(posix.lchflags, support.TESTFN)
def test_lchflags_regular_file(self): self._test_chflags_regular_file(posix.lchflags, test_support.TESTFN)
def test_lchflags_symlink(self): testfn_st = os.stat(test_support.TESTFN) self.assertTrue(hasattr(testfn_st, 'st_flags')) os.symlink(test_support.TESTFN, _DUMMY_SYMLINK) self.teardown_files.append(_DUMMY_SYMLINK) dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) # ZFS returns EOPNOTSUPP when attempting to set flag UF_IMMUTABLE. try: posix.lchflags(_DUMMY_SYMLINK, dummy_symlink_st.st_flags | stat.UF_IMMUTABLE) except OSError as err: if err.errno != errno.EOPNOTSUPP: raise msg = 'chflag UF_IMMUTABLE not supported by underlying fs' self.skipTest(msg) try: new_testfn_st = os.stat(test_support.TESTFN) new_dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) self.assertEqual(testfn_st.st_flags, new_testfn_st.st_flags) self.assertEqual(dummy_symlink_st.st_flags | stat.UF_IMMUTABLE, new_dummy_symlink_st.st_flags) finally: posix.lchflags(_DUMMY_SYMLINK, dummy_symlink_st.st_flags)
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)
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)
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'))) self.assertEqual(os.readlink(os.path.join(dst_dir, 'sub', 'link')), 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_lchflags_regular_file(self): self._test_chflags_regular_file(posix.lchflags, support.TESTFN) self._test_chflags_regular_file(posix.chflags, support.TESTFN, follow_symlinks=False)
def test_lchflags_symlink(self): testfn_st = os.stat(support.TESTFN) self.assertTrue(hasattr(testfn_st, 'st_flags')) os.symlink(support.TESTFN, _DUMMY_SYMLINK) self.teardown_files.append(_DUMMY_SYMLINK) dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) def chflags_nofollow(path, flags): return posix.chflags(path, flags, follow_symlinks=False) for fn in (posix.lchflags, chflags_nofollow): # ZFS returns EOPNOTSUPP when attempting to set flag UF_IMMUTABLE. flags = dummy_symlink_st.st_flags | stat.UF_IMMUTABLE try: fn(_DUMMY_SYMLINK, flags) except OSError as err: if err.errno != errno.EOPNOTSUPP: raise msg = 'chflag UF_IMMUTABLE not supported by underlying fs' self.skipTest(msg) try: new_testfn_st = os.stat(support.TESTFN) new_dummy_symlink_st = os.lstat(_DUMMY_SYMLINK) self.assertEqual(testfn_st.st_flags, new_testfn_st.st_flags) self.assertEqual(dummy_symlink_st.st_flags | stat.UF_IMMUTABLE, new_dummy_symlink_st.st_flags) finally: fn(_DUMMY_SYMLINK, dummy_symlink_st.st_flags)
