René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"os.path.realpath(symlink to DOS devices path that starts with '\\\\?\\Some without \":\"\\') returns without prefix.","articleBody":"``` os.path.realpath(symblic link to DOS Device Paths) ``` returns a path without ``` \\\\?\\ ``` prefix even if patch that fix.\r\n\r\nFor example, there is below symlinks on C:\\test.\r\n```\r\nC:\\test\u003edir\r\n03/05/2023  06:16 AM    \u003cSYMLINKD\u003e     media [\\\\?\\ContainerMappedDirectories\\CE94A662-0837-4F45-B403-55B3E57CE848]\r\n03/05/2023  06:19 AM    \u003cSYMLINKD\u003e     to_c [\\\\?\\C:\\]\r\n```\r\n\r\nThen exexute python and call os.path.realpath and call some functions to inspect.\r\n```python\r\n\u003e\u003e\u003e import os\r\n\u003e\u003e\u003e from ntpath import normpath, normcase, devnull, join, isabs, _getfinalpathname, _getfinalpathname_nonstrict\r\n\u003e\u003e\u003e\r\n\u003e\u003e\u003e to_c_fn = r'to_c'\r\n\u003e\u003e\u003e media_fn = r'media'\r\n\u003e\u003e\u003e os.path.realpath(to_c_fn)\r\n'C:\\\\'\r\n\u003e\u003e\u003e os.path.realpath(media_fn)\r\n'\\\\ContainerMappedDirectories\\\\CE94A662-0837-4F45-B403-55B3E57CE848'\r\n\u003e\u003e\u003e _getfinalpathname(to_c_fn)\r\n'\\\\\\\\?\\\\C:\\\\'\r\n\u003e\u003e\u003e _getfinalpathname(media_fn)\r\nTraceback (most recent call last):\r\n  File \"\u003cstdin\u003e\", line 1, in \u003cmodule\u003e\r\nFileNotFoundError: [WinError 2] The system cannot find the file specified: 'media'\r\n\u003e\u003e\u003e _getfinalpathname_nonstrict(to_c_fn)\r\n'\\\\\\\\?\\\\C:\\\\'\r\n\u003e\u003e\u003e _getfinalpathname_nonstrict(media_fn)\r\n'\\\\ContainerMappedDirectories\\\\CE94A662-0837-4F45-B403-55B3E57CE848'\r\n```\r\nAs the log indicates, os.path.realpath returns without a prefix.\r\n\r\nI think it is wrong that _getfinalpathname_nonstrict removes DOS devices paths prefix.\r\nSo to fix the problem, I think we need to fix _getfinalpathname function on \"Modules/posixmodule.c\".\r\n\r\nPlease some opinions.","author":{"url":"https://github.com/wintermaples","@type":"Person","name":"wintermaples"},"datePublished":"2023-03-05T15:01:24.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":7},"url":"https://github.com/102440/cpython/issues/102440"}