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bpo-37834: Normalise handling of reparse points on Windows (GH-15231)

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bpo-37834: Normalise handling of reparse points on Windows
* ntpath.realpath() and nt.stat() will traverse all supported reparse points (previously was mixed)
* nt.lstat() will let the OS traverse reparse points that are not name surrogates (previously would not traverse any reparse point)
* nt.[l]stat() will only set S_IFLNK for symlinks (previous behaviour)
* nt.readlink() will read destinations for symlinks and junction points only

bpo-1311: os.path.exists('nul') now returns True on Windows
* nt.stat('nul').st_mode is now S_IFCHR (previously was an error)
This commit is contained in:
Steve Dower 2019-08-21 15:27:33 -07:00 • committed by GitHub
parent bcc446f525
commit df2d4a6f3d
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16 changed files with 477 additions and 240 deletions
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7
Modules/_stat.c
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@ -589,6 +589,13 @@ PyInit__stat(void)
if (PyModule_AddIntMacro(m, FILE_ATTRIBUTE_SYSTEM)) return NULL;
if (PyModule_AddIntMacro(m, FILE_ATTRIBUTE_TEMPORARY)) return NULL;
if (PyModule_AddIntMacro(m, FILE_ATTRIBUTE_VIRTUAL)) return NULL;
if (PyModule_AddObject(m, "IO_REPARSE_TAG_SYMLINK",
PyLong_FromUnsignedLong(IO_REPARSE_TAG_SYMLINK))) return NULL;
if (PyModule_AddObject(m, "IO_REPARSE_TAG_MOUNT_POINT",
PyLong_FromUnsignedLong(IO_REPARSE_TAG_MOUNT_POINT))) return NULL;
if (PyModule_AddObject(m, "IO_REPARSE_TAG_APPEXECLINK",
PyLong_FromUnsignedLong(IO_REPARSE_TAG_APPEXECLINK))) return NULL;
#endif
return m;